Fix windows build by adding Thrift source

OpenTelemetry.sln

@@ -71,6 +71,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Exporters", "samples\Export
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTelemetry.Exporter.Jaeger", "src\OpenTelemetry.Exporter.Jaeger\OpenTelemetry.Exporter.Jaeger.csproj", "{ECC1F0A2-F880-46FA-8D7D-1AC909829E17}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "lib", "lib", "{328E9300-9DA5-11E9-B531-E75873C46FCA}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Thrift", "lib\Thrift\Thrift.csproj", "{2B0A9573-CC51-4BE2-86EA-8DEA3D7213FF}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -153,6 +157,10 @@ Global
 		{ECC1F0A2-F880-46FA-8D7D-1AC909829E17}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{ECC1F0A2-F880-46FA-8D7D-1AC909829E17}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{ECC1F0A2-F880-46FA-8D7D-1AC909829E17}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2B0A9573-CC51-4BE2-86EA-8DEA3D7213FF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2B0A9573-CC51-4BE2-86EA-8DEA3D7213FF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2B0A9573-CC51-4BE2-86EA-8DEA3D7213FF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2B0A9573-CC51-4BE2-86EA-8DEA3D7213FF}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -161,6 +169,7 @@ Global
 		{7CB2F02E-03FA-4FFF-89A5-C51F107623FD} = {61188153-47FB-4567-AC9B-79B2435853EB}
 		{F2F81E76-6A0E-466B-B673-EBBF1A9ED075} = {77C7929A-2EED-4AA6-8705-B5C443C8AA0F}
 		{6EC9DEC9-086F-4F29-BF3F-5FC7253829D5} = {E359BB2B-9AEC-497D-B321-7DF2450C3B8E}
+		{2B0A9573-CC51-4BE2-86EA-8DEA3D7213FF} = {328E9300-9DA5-11E9-B531-E75873C46FCA}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {55639B5C-0770-4A22-AB56-859604650521}

lib/Thrift/Collections/TCollections.cs

@@ -0,0 +1,101 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Collections;
+
+namespace Thrift.Collections
+{
+    // ReSharper disable once InconsistentNaming
+    public class TCollections
+    {
+        /// <summary>
+        ///     This will return true if the two collections are value-wise the same.
+        ///     If the collection contains a collection, the collections will be compared using this method.
+        /// </summary>
+        public static bool Equals(IEnumerable first, IEnumerable second)
+        {
+            if (first == null && second == null)
+            {
+                return true;
+            }
+
+            if (first == null || second == null)
+            {
+                return false;
+            }
+
+            var fiter = first.GetEnumerator();
+            var siter = second.GetEnumerator();
+
+            var fnext = fiter.MoveNext();
+            var snext = siter.MoveNext();
+
+            while (fnext && snext)
+            {
+                var fenum = fiter.Current as IEnumerable;
+                var senum = siter.Current as IEnumerable;
+
+                if (fenum != null && senum != null)
+                {
+                    if (!Equals(fenum, senum))
+                    {
+                        return false;
+                    }
+                }
+                else if (fenum == null ^ senum == null)
+                {
+                    return false;
+                }
+                else if (!Equals(fiter.Current, siter.Current))
+                {
+                    return false;
+                }
+
+                fnext = fiter.MoveNext();
+                snext = siter.MoveNext();
+            }
+
+            return fnext == snext;
+        }
+
+        /// <summary>
+        ///     This returns a hashcode based on the value of the enumerable.
+        /// </summary>
+        public static int GetHashCode(IEnumerable enumerable)
+        {
+            if (enumerable == null)
+            {
+                return 0;
+            }
+
+            var hashcode = 0;
+
+            foreach (var obj in enumerable)
+            {
+                var enum2 = obj as IEnumerable;
+                var objHash = enum2 == null ? obj.GetHashCode() : GetHashCode(enum2);
+
+                unchecked
+                {
+                    hashcode = (hashcode*397) ^ (objHash);
+                }
+            }
+
+            return hashcode;
+        }
+    }
+}

lib/Thrift/Collections/THashSet.cs

@@ -0,0 +1,67 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Collections;
+using System.Collections.Generic;
+
+namespace Thrift.Collections
+{
+    // ReSharper disable once InconsistentNaming
+    public class THashSet<T> : ICollection<T>
+    {
+        private readonly HashSet<T> _set = new HashSet<T>();
+
+        public int Count => _set.Count;
+
+        public bool IsReadOnly => false;
+
+        public void Add(T item)
+        {
+            _set.Add(item);
+        }
+
+        public void Clear()
+        {
+            _set.Clear();
+        }
+
+        public bool Contains(T item)
+        {
+            return _set.Contains(item);
+        }
+
+        public void CopyTo(T[] array, int arrayIndex)
+        {
+            _set.CopyTo(array, arrayIndex);
+        }
+
+        public IEnumerator GetEnumerator()
+        {
+            return _set.GetEnumerator();
+        }
+
+        IEnumerator<T> IEnumerable<T>.GetEnumerator()
+        {
+            return ((IEnumerable<T>) _set).GetEnumerator();
+        }
+
+        public bool Remove(T item)
+        {
+            return _set.Remove(item);
+        }
+    }
+}

lib/Thrift/ITAsyncProcessor.cs

@@ -0,0 +1,29 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols;
+
+namespace Thrift
+{
+    public interface ITAsyncProcessor
+    {
+        Task<bool> ProcessAsync(TProtocol iprot, TProtocol oprot);
+        Task<bool> ProcessAsync(TProtocol iprot, TProtocol oprot, CancellationToken cancellationToken);
+    }
+}

lib/Thrift/ITProcessorFactory.cs

@@ -0,0 +1,28 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using Thrift.Server;
+using Thrift.Transports;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    public interface ITProcessorFactory
+    {
+        ITAsyncProcessor GetAsyncProcessor(TClientTransport trans, TBaseServer baseServer = null);
+    }
+}

lib/Thrift/Protocols/Entities/TField.cs

@@ -0,0 +1,37 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public struct TField
+    {
+        public TField(string name, TType type, short id)
+        {
+            Name = name;
+            Type = type;
+            ID = id;
+        }
+
+        public string Name { get; set; }
+
+        public TType Type { get; set; }
+
+        // ReSharper disable once InconsistentNaming - do not rename - it used for generation 
+        public short ID { get; set; }
+    }
+}

lib/Thrift/Protocols/Entities/TList.cs

@@ -0,0 +1,33 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public struct TList
+    {
+        public TList(TType elementType, int count)
+        {
+            ElementType = elementType;
+            Count = count;
+        }
+
+        public TType ElementType { get; set; }
+
+        public int Count { get; set; }
+    }
+}

lib/Thrift/Protocols/Entities/TMap.cs

@@ -0,0 +1,36 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public struct TMap
+    {
+        public TMap(TType keyType, TType valueType, int count)
+        {
+            KeyType = keyType;
+            ValueType = valueType;
+            Count = count;
+        }
+
+        public TType KeyType { get; set; }
+
+        public TType ValueType { get; set; }
+
+        public int Count { get; set; }
+    }
+}

lib/Thrift/Protocols/Entities/TMessage.cs

@@ -0,0 +1,37 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public struct TMessage
+    {
+        public TMessage(string name, TMessageType type, int seqid)
+        {
+            Name = name;
+            Type = type;
+            SeqID = seqid;
+        }
+
+        public string Name { get; set; }
+
+        public TMessageType Type { get; set; }
+
+        // ReSharper disable once InconsistentNaming - do not rename - it used for generation 
+        public int SeqID { get; set; }
+    }
+}

lib/Thrift/Protocols/Entities/TMessageType.cs

@@ -0,0 +1,28 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public enum TMessageType
+    {
+        Call = 1,
+        Reply = 2,
+        Exception = 3,
+        Oneway = 4
+    }
+}

lib/Thrift/Protocols/Entities/TSet.cs

@@ -0,0 +1,38 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public struct TSet
+    {
+        public TSet(TType elementType, int count)
+        {
+            ElementType = elementType;
+            Count = count;
+        }
+
+        public TSet(TList list)
+            : this(list.ElementType, list.Count)
+        {
+        }
+
+        public TType ElementType { get; set; }
+
+        public int Count { get; set; }
+    }
+}

lib/Thrift/Protocols/Entities/TStruct.cs

@@ -0,0 +1,30 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public struct TStruct
+    {
+        public TStruct(string name)
+        {
+            Name = name;
+        }
+
+        public string Name { get; set; }
+    }
+}

lib/Thrift/Protocols/Entities/TType.cs

@@ -0,0 +1,37 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Entities
+{
+    // ReSharper disable once InconsistentNaming
+    public enum TType : byte
+    {
+        Stop = 0,
+        Void = 1,
+        Bool = 2,
+        Byte = 3,
+        Double = 4,
+        I16 = 6,
+        I32 = 8,
+        I64 = 10,
+        String = 11,
+        Struct = 12,
+        Map = 13,
+        Set = 14,
+        List = 15
+    }
+}

lib/Thrift/Protocols/ITProtocolFactory.cs

@@ -0,0 +1,27 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using Thrift.Transports;
+
+namespace Thrift.Protocols
+{
+    // ReSharper disable once InconsistentNaming
+    public interface ITProtocolFactory
+    {
+        TProtocol GetProtocol(TClientTransport trans);
+    }
+}

lib/Thrift/Protocols/TAbstractBase.cs

@@ -0,0 +1,28 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Protocols
+{
+    // ReSharper disable once InconsistentNaming
+    public interface TAbstractBase
+    {
+        Task WriteAsync(TProtocol tProtocol, CancellationToken cancellationToken);
+    }
+}

lib/Thrift/Protocols/TBase.cs

@@ -0,0 +1,28 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Protocols
+{
+    // ReSharper disable once InconsistentNaming
+    public interface TBase : TAbstractBase
+    {
+        Task ReadAsync(TProtocol tProtocol, CancellationToken cancellationToken);
+    }
+}

lib/Thrift/Protocols/TBinaryProtocol.cs

@@ -0,0 +1,613 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+using Thrift.Transports;
+
+namespace Thrift.Protocols
+{
+    // ReSharper disable once InconsistentNaming
+    public class TBinaryProtocol : TProtocol
+    {
+        //TODO: Unit tests
+        //TODO: Localization
+        //TODO: pragma
+
+        protected const uint VersionMask = 0xffff0000;
+        protected const uint Version1 = 0x80010000;
+
+        protected bool StrictRead;
+        protected bool StrictWrite;
+
+        public TBinaryProtocol(TClientTransport trans)
+            : this(trans, false, true)
+        {
+        }
+
+        public TBinaryProtocol(TClientTransport trans, bool strictRead, bool strictWrite)
+            : base(trans)
+        {
+            StrictRead = strictRead;
+            StrictWrite = strictWrite;
+        }
+
+        public override async Task WriteMessageBeginAsync(TMessage message, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            if (StrictWrite)
+            {
+                var version = Version1 | (uint) message.Type;
+                await WriteI32Async((int) version, cancellationToken);
+                await WriteStringAsync(message.Name, cancellationToken);
+                await WriteI32Async(message.SeqID, cancellationToken);
+            }
+            else
+            {
+                await WriteStringAsync(message.Name, cancellationToken);
+                await WriteByteAsync((sbyte) message.Type, cancellationToken);
+                await WriteI32Async(message.SeqID, cancellationToken);
+            }
+        }
+
+        public override async Task WriteMessageEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteStructBeginAsync(TStruct @struct, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteStructEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteFieldBeginAsync(TField field, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteByteAsync((sbyte) field.Type, cancellationToken);
+            await WriteI16Async(field.ID, cancellationToken);
+        }
+
+        public override async Task WriteFieldEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteFieldStopAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteByteAsync((sbyte) TType.Stop, cancellationToken);
+        }
+
+        public override async Task WriteMapBeginAsync(TMap map, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteByteAsync((sbyte) map.KeyType, cancellationToken);
+            await WriteByteAsync((sbyte) map.ValueType, cancellationToken);
+            await WriteI32Async(map.Count, cancellationToken);
+        }
+
+        public override async Task WriteMapEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteListBeginAsync(TList list, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteByteAsync((sbyte) list.ElementType, cancellationToken);
+            await WriteI32Async(list.Count, cancellationToken);
+        }
+
+        public override async Task WriteListEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteSetBeginAsync(TSet set, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteByteAsync((sbyte) set.ElementType, cancellationToken);
+            await WriteI32Async(set.Count, cancellationToken);
+        }
+
+        public override async Task WriteSetEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteBoolAsync(bool b, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteByteAsync(b ? (sbyte) 1 : (sbyte) 0, cancellationToken);
+        }
+
+        protected internal static byte[] CreateWriteByte(sbyte b)
+        {
+            var bout = new byte[1];
+
+            bout[0] = (byte) b;
+
+            return bout;
+        }
+
+        public override async Task WriteByteAsync(sbyte b, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var bout = CreateWriteByte(b);
+            await Trans.WriteAsync(bout, 0, 1, cancellationToken);
+        }
+
+        protected internal static byte[] CreateWriteI16(short s)
+        {
+            var i16Out = new byte[2];
+
+            i16Out[0] = (byte) (0xff & (s >> 8));
+            i16Out[1] = (byte) (0xff & s);
+
+            return i16Out;
+        }
+
+        public override async Task WriteI16Async(short i16, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var i16Out = CreateWriteI16(i16);
+            await Trans.WriteAsync(i16Out, 0, 2, cancellationToken);
+        }
+
+        protected internal static byte[] CreateWriteI32(int i32)
+        {
+            var i32Out = new byte[4];
+
+            i32Out[0] = (byte) (0xff & (i32 >> 24));
+            i32Out[1] = (byte) (0xff & (i32 >> 16));
+            i32Out[2] = (byte) (0xff & (i32 >> 8));
+            i32Out[3] = (byte) (0xff & i32);
+
+            return i32Out;
+        }
+
+        public override async Task WriteI32Async(int i32, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var i32Out = CreateWriteI32(i32);
+            await Trans.WriteAsync(i32Out, 0, 4, cancellationToken);
+        }
+
+        protected internal static byte[] CreateWriteI64(long i64)
+        {
+            var i64Out = new byte[8];
+
+            i64Out[0] = (byte) (0xff & (i64 >> 56));
+            i64Out[1] = (byte) (0xff & (i64 >> 48));
+            i64Out[2] = (byte) (0xff & (i64 >> 40));
+            i64Out[3] = (byte) (0xff & (i64 >> 32));
+            i64Out[4] = (byte) (0xff & (i64 >> 24));
+            i64Out[5] = (byte) (0xff & (i64 >> 16));
+            i64Out[6] = (byte) (0xff & (i64 >> 8));
+            i64Out[7] = (byte) (0xff & i64);
+
+            return i64Out;
+        }
+
+        public override async Task WriteI64Async(long i64, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var i64Out = CreateWriteI64(i64);
+            await Trans.WriteAsync(i64Out, 0, 8, cancellationToken);
+        }
+
+        public override async Task WriteDoubleAsync(double d, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteI64Async(BitConverter.DoubleToInt64Bits(d), cancellationToken);
+        }
+
+        public override async Task WriteBinaryAsync(byte[] bytes, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteI32Async(bytes.Length, cancellationToken);
+            await Trans.WriteAsync(bytes, 0, bytes.Length, cancellationToken);
+        }
+
+        public override async Task<TMessage> ReadMessageBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TMessage>(cancellationToken);
+            }
+
+            var message = new TMessage();
+            var size = await ReadI32Async(cancellationToken);
+            if (size < 0)
+            {
+                var version = (uint) size & VersionMask;
+                if (version != Version1)
+                {
+                    throw new TProtocolException(TProtocolException.BAD_VERSION,
+                        $"Bad version in ReadMessageBegin: {version}");
+                }
+                message.Type = (TMessageType) (size & 0x000000ff);
+                message.Name = await ReadStringAsync(cancellationToken);
+                message.SeqID = await ReadI32Async(cancellationToken);
+            }
+            else
+            {
+                if (StrictRead)
+                {
+                    throw new TProtocolException(TProtocolException.BAD_VERSION,
+                        "Missing version in ReadMessageBegin, old client?");
+                }
+                message.Name = await ReadStringBodyAsync(size, cancellationToken);
+                message.Type = (TMessageType) await ReadByteAsync(cancellationToken);
+                message.SeqID = await ReadI32Async(cancellationToken);
+            }
+            return message;
+        }
+
+        public override async Task ReadMessageEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TStruct> ReadStructBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            //TODO: no read from internal transport?
+            return new TStruct();
+        }
+
+        public override async Task ReadStructEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TField> ReadFieldBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TField>(cancellationToken);
+            }
+
+            var field = new TField
+            {
+                Type = (TType) await ReadByteAsync(cancellationToken)
+            };
+
+            if (field.Type != TType.Stop)
+            {
+                field.ID = await ReadI16Async(cancellationToken);
+            }
+
+            return field;
+        }
+
+        public override async Task ReadFieldEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TMap> ReadMapBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TMap>(cancellationToken);
+            }
+
+            var map = new TMap
+            {
+                KeyType = (TType) await ReadByteAsync(cancellationToken),
+                ValueType = (TType) await ReadByteAsync(cancellationToken),
+                Count = await ReadI32Async(cancellationToken)
+            };
+
+            return map;
+        }
+
+        public override async Task ReadMapEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TList> ReadListBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TList>(cancellationToken);
+            }
+
+            var list = new TList
+            {
+                ElementType = (TType) await ReadByteAsync(cancellationToken),
+                Count = await ReadI32Async(cancellationToken)
+            };
+
+            return list;
+        }
+
+        public override async Task ReadListEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TSet> ReadSetBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TSet>(cancellationToken);
+            }
+
+            var set = new TSet
+            {
+                ElementType = (TType) await ReadByteAsync(cancellationToken),
+                Count = await ReadI32Async(cancellationToken)
+            };
+
+            return set;
+        }
+
+        public override async Task ReadSetEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<bool> ReadBoolAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<bool>(cancellationToken);
+            }
+
+            return await ReadByteAsync(cancellationToken) == 1;
+        }
+
+        public override async Task<sbyte> ReadByteAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<sbyte>(cancellationToken);
+            }
+
+            var bin = new byte[1];
+            await Trans.ReadAllAsync(bin, 0, 1, cancellationToken); //TODO: why readall ?
+            return (sbyte) bin[0];
+        }
+
+        public override async Task<short> ReadI16Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<short>(cancellationToken);
+            }
+
+            var i16In = new byte[2];
+            await Trans.ReadAllAsync(i16In, 0, 2, cancellationToken);
+            var result = (short) (((i16In[0] & 0xff) << 8) | i16In[1] & 0xff);
+            return result;
+        }
+
+        public override async Task<int> ReadI32Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<int>(cancellationToken);
+            }
+
+            var i32In = new byte[4];
+            await Trans.ReadAllAsync(i32In, 0, 4, cancellationToken);
+
+            var result = 
+                ((i32In[0] & 0xff) << 24) | 
+                ((i32In[1] & 0xff) << 16) | 
+                ((i32In[2] & 0xff) << 8) |
+                i32In[3] & 0xff;
+
+            return result;
+        }
+
+#pragma warning disable 675
+
+        protected internal long CreateReadI64(byte[] buf)
+        {
+            var result =
+                ((long) (buf[0] & 0xff) << 56) |
+                ((long) (buf[1] & 0xff) << 48) |
+                ((long) (buf[2] & 0xff) << 40) |
+                ((long) (buf[3] & 0xff) << 32) |
+                ((long) (buf[4] & 0xff) << 24) |
+                ((long) (buf[5] & 0xff) << 16) |
+                ((long) (buf[6] & 0xff) << 8) |
+                buf[7] & 0xff;
+
+            return result;
+        }
+
+#pragma warning restore 675
+
+        public override async Task<long> ReadI64Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<long>(cancellationToken);
+            }
+
+            var i64In = new byte[8];
+            await Trans.ReadAllAsync(i64In, 0, 8, cancellationToken);
+            return CreateReadI64(i64In);
+        }
+
+        public override async Task<double> ReadDoubleAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<double>(cancellationToken);
+            }
+
+            var d = await ReadI64Async(cancellationToken);
+            return BitConverter.Int64BitsToDouble(d);
+        }
+
+        public override async Task<byte[]> ReadBinaryAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<byte[]>(cancellationToken);
+            }
+
+            var size = await ReadI32Async(cancellationToken);
+            var buf = new byte[size];
+            await Trans.ReadAllAsync(buf, 0, size, cancellationToken);
+            return buf;
+        }
+
+        private async Task<string> ReadStringBodyAsync(int size, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled<string>(cancellationToken);
+            }
+
+            var buf = new byte[size];
+            await Trans.ReadAllAsync(buf, 0, size, cancellationToken);
+            return Encoding.UTF8.GetString(buf, 0, buf.Length);
+        }
+
+        public class Factory : ITProtocolFactory
+        {
+            protected bool StrictRead;
+            protected bool StrictWrite;
+
+            public Factory()
+                : this(false, true)
+            {
+            }
+
+            public Factory(bool strictRead, bool strictWrite)
+            {
+                StrictRead = strictRead;
+                StrictWrite = strictWrite;
+            }
+
+            public TProtocol GetProtocol(TClientTransport trans)
+            {
+                return new TBinaryProtocol(trans, StrictRead, StrictWrite);
+            }
+        }
+    }
+}

lib/Thrift/Protocols/TCompactProtocol.cs

@@ -0,0 +1,922 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+using Thrift.Transports;
+
+namespace Thrift.Protocols
+{
+    //TODO: implementation of TProtocol
+
+    // ReSharper disable once InconsistentNaming
+    public class TCompactProtocol : TProtocol
+    {
+        private const byte ProtocolId = 0x82;
+        private const byte Version = 1;
+        private const byte VersionMask = 0x1f; // 0001 1111
+        private const byte TypeMask = 0xE0; // 1110 0000
+        private const byte TypeBits = 0x07; // 0000 0111
+        private const int TypeShiftAmount = 5;
+        private static readonly TStruct AnonymousStruct = new TStruct(string.Empty);
+        private static readonly TField Tstop = new TField(string.Empty, TType.Stop, 0);
+
+        // ReSharper disable once InconsistentNaming
+        private static readonly byte[] TTypeToCompactType = new byte[16];
+
+        /// <summary>
+        ///     Used to keep track of the last field for the current and previous structs, so we can do the delta stuff.
+        /// </summary>
+        private readonly Stack<short> _lastField = new Stack<short>(15);
+
+        /// <summary>
+        ///     If we encounter a boolean field begin, save the TField here so it can have the value incorporated.
+        /// </summary>
+        private TField? _booleanField;
+
+        /// <summary>
+        ///     If we Read a field header, and it's a boolean field, save the boolean value here so that ReadBool can use it.
+        /// </summary>
+        private bool? _boolValue;
+
+        private short _lastFieldId;
+
+        public TCompactProtocol(TClientTransport trans)
+            : base(trans)
+        {
+            TTypeToCompactType[(int) TType.Stop] = Types.Stop;
+            TTypeToCompactType[(int) TType.Bool] = Types.BooleanTrue;
+            TTypeToCompactType[(int) TType.Byte] = Types.Byte;
+            TTypeToCompactType[(int) TType.I16] = Types.I16;
+            TTypeToCompactType[(int) TType.I32] = Types.I32;
+            TTypeToCompactType[(int) TType.I64] = Types.I64;
+            TTypeToCompactType[(int) TType.Double] = Types.Double;
+            TTypeToCompactType[(int) TType.String] = Types.Binary;
+            TTypeToCompactType[(int) TType.List] = Types.List;
+            TTypeToCompactType[(int) TType.Set] = Types.Set;
+            TTypeToCompactType[(int) TType.Map] = Types.Map;
+            TTypeToCompactType[(int) TType.Struct] = Types.Struct;
+        }
+
+        public void Reset()
+        {
+            _lastField.Clear();
+            _lastFieldId = 0;
+        }
+
+        public override async Task WriteMessageBeginAsync(TMessage message, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await Trans.WriteAsync(new[] {ProtocolId}, cancellationToken);
+            await
+                Trans.WriteAsync(
+                    new[] {(byte) ((Version & VersionMask) | (((uint) message.Type << TypeShiftAmount) & TypeMask))},
+                    cancellationToken);
+
+            var bufferTuple = CreateWriteVarInt32((uint) message.SeqID);
+            await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+
+            await WriteStringAsync(message.Name, cancellationToken);
+        }
+
+        public override async Task WriteMessageEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        /// <summary>
+        ///     Write a struct begin. This doesn't actually put anything on the wire. We
+        ///     use it as an opportunity to put special placeholder markers on the field
+        ///     stack so we can get the field id deltas correct.
+        /// </summary>
+        public override async Task WriteStructBeginAsync(TStruct @struct, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            _lastField.Push(_lastFieldId);
+            _lastFieldId = 0;
+        }
+
+        public override async Task WriteStructEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            _lastFieldId = _lastField.Pop();
+        }
+
+        private async Task WriteFieldBeginInternalAsync(TField field, byte typeOverride,
+            CancellationToken cancellationToken)
+        {
+            // if there's a exType override, use that.
+            var typeToWrite = typeOverride == 0xFF ? GetCompactType(field.Type) : typeOverride;
+
+            // check if we can use delta encoding for the field id
+            if ((field.ID > _lastFieldId) && (field.ID - _lastFieldId <= 15))
+            {
+                var b = (byte) (((field.ID - _lastFieldId) << 4) | typeToWrite);
+                // Write them together
+                await Trans.WriteAsync(new[] {b}, cancellationToken);
+            }
+            else
+            {
+                // Write them separate
+                await Trans.WriteAsync(new[] {typeToWrite}, cancellationToken);
+                await WriteI16Async(field.ID, cancellationToken);
+            }
+
+            _lastFieldId = field.ID;
+        }
+
+        public override async Task WriteFieldBeginAsync(TField field, CancellationToken cancellationToken)
+        {
+            if (field.Type == TType.Bool)
+            {
+                _booleanField = field;
+            }
+            else
+            {
+                await WriteFieldBeginInternalAsync(field, 0xFF, cancellationToken);
+            }
+        }
+
+        public override async Task WriteFieldEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteFieldStopAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await Trans.WriteAsync(new[] {Types.Stop}, cancellationToken);
+        }
+
+        protected async Task WriteCollectionBeginAsync(TType elemType, int size, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            /*
+            Abstract method for writing the start of lists and sets. List and sets on
+             the wire differ only by the exType indicator.
+            */
+
+            if (size <= 14)
+            {
+                await Trans.WriteAsync(new[] {(byte) ((size << 4) | GetCompactType(elemType))}, cancellationToken);
+            }
+            else
+            {
+                await Trans.WriteAsync(new[] {(byte) (0xf0 | GetCompactType(elemType))}, cancellationToken);
+
+                var bufferTuple = CreateWriteVarInt32((uint) size);
+                await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+            }
+        }
+
+        public override async Task WriteListBeginAsync(TList list, CancellationToken cancellationToken)
+        {
+            await WriteCollectionBeginAsync(list.ElementType, list.Count, cancellationToken);
+        }
+
+        public override async Task WriteListEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteSetBeginAsync(TSet set, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await WriteCollectionBeginAsync(set.ElementType, set.Count, cancellationToken);
+        }
+
+        public override async Task WriteSetEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteBoolAsync(bool b, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            /*
+            Write a boolean value. Potentially, this could be a boolean field, in
+            which case the field header info isn't written yet. If so, decide what the
+            right exType header is for the value and then Write the field header.
+            Otherwise, Write a single byte.
+            */
+
+            if (_booleanField != null)
+            {
+                // we haven't written the field header yet
+                await
+                    WriteFieldBeginInternalAsync(_booleanField.Value, b ? Types.BooleanTrue : Types.BooleanFalse,
+                        cancellationToken);
+                _booleanField = null;
+            }
+            else
+            {
+                // we're not part of a field, so just Write the value.
+                await Trans.WriteAsync(new[] {b ? Types.BooleanTrue : Types.BooleanFalse}, cancellationToken);
+            }
+        }
+
+        public override async Task WriteByteAsync(sbyte b, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            await Trans.WriteAsync(new[] {(byte) b}, cancellationToken);
+        }
+
+        public override async Task WriteI16Async(short i16, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var bufferTuple = CreateWriteVarInt32(IntToZigzag(i16));
+            await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+        }
+
+        protected internal Tuple<byte[], int> CreateWriteVarInt32(uint n)
+        {
+            // Write an i32 as a varint.Results in 1 - 5 bytes on the wire.
+            var i32Buf = new byte[5];
+            var idx = 0;
+
+            while (true)
+            {
+                if ((n & ~0x7F) == 0)
+                {
+                    i32Buf[idx++] = (byte) n;
+                    break;
+                }
+
+                i32Buf[idx++] = (byte) ((n & 0x7F) | 0x80);
+                n >>= 7;
+            }
+
+            return new Tuple<byte[], int>(i32Buf, idx);
+        }
+
+        public override async Task WriteI32Async(int i32, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var bufferTuple = CreateWriteVarInt32(IntToZigzag(i32));
+            await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+        }
+
+        protected internal Tuple<byte[], int> CreateWriteVarInt64(ulong n)
+        {
+            // Write an i64 as a varint. Results in 1-10 bytes on the wire.
+            var buf = new byte[10];
+            var idx = 0;
+
+            while (true)
+            {
+                if ((n & ~(ulong) 0x7FL) == 0)
+                {
+                    buf[idx++] = (byte) n;
+                    break;
+                }
+                buf[idx++] = (byte) ((n & 0x7F) | 0x80);
+                n >>= 7;
+            }
+
+            return new Tuple<byte[], int>(buf, idx);
+        }
+
+        public override async Task WriteI64Async(long i64, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var bufferTuple = CreateWriteVarInt64(LongToZigzag(i64));
+            await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+        }
+
+        public override async Task WriteDoubleAsync(double d, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var data = new byte[8];
+            FixedLongToBytes(BitConverter.DoubleToInt64Bits(d), data, 0);
+            await Trans.WriteAsync(data, cancellationToken);
+        }
+
+        public override async Task WriteStringAsync(string str, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var bytes = Encoding.UTF8.GetBytes(str);
+
+            var bufferTuple = CreateWriteVarInt32((uint) bytes.Length);
+            await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+            await Trans.WriteAsync(bytes, 0, bytes.Length, cancellationToken);
+        }
+
+        public override async Task WriteBinaryAsync(byte[] bytes, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var bufferTuple = CreateWriteVarInt32((uint) bytes.Length);
+            await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+            await Trans.WriteAsync(bytes, 0, bytes.Length, cancellationToken);
+        }
+
+        public override async Task WriteMapBeginAsync(TMap map, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            if (map.Count == 0)
+            {
+                await Trans.WriteAsync(new[] {(byte) 0}, cancellationToken);
+            }
+            else
+            {
+                var bufferTuple = CreateWriteVarInt32((uint) map.Count);
+                await Trans.WriteAsync(bufferTuple.Item1, 0, bufferTuple.Item2, cancellationToken);
+                await
+                    Trans.WriteAsync(
+                        new[] {(byte) ((GetCompactType(map.KeyType) << 4) | GetCompactType(map.ValueType))},
+                        cancellationToken);
+            }
+        }
+
+        public override async Task WriteMapEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TMessage> ReadMessageBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TMessage>(cancellationToken);
+            }
+
+            var protocolId = (byte) await ReadByteAsync(cancellationToken);
+            if (protocolId != ProtocolId)
+            {
+                throw new TProtocolException($"Expected protocol id {ProtocolId:X} but got {protocolId:X}");
+            }
+
+            var versionAndType = (byte) await ReadByteAsync(cancellationToken);
+            var version = (byte) (versionAndType & VersionMask);
+
+            if (version != Version)
+            {
+                throw new TProtocolException($"Expected version {Version} but got {version}");
+            }
+
+            var type = (byte) ((versionAndType >> TypeShiftAmount) & TypeBits);
+            var seqid = (int) await ReadVarInt32Async(cancellationToken);
+            var messageName = await ReadStringAsync(cancellationToken);
+
+            return new TMessage(messageName, (TMessageType) type, seqid);
+        }
+
+        public override async Task ReadMessageEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TStruct> ReadStructBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TStruct>(cancellationToken);
+            }
+
+            // some magic is here )
+
+            _lastField.Push(_lastFieldId);
+            _lastFieldId = 0;
+
+            return AnonymousStruct;
+        }
+
+        public override async Task ReadStructEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            /*
+            Doesn't actually consume any wire data, just removes the last field for
+            this struct from the field stack.
+            */
+
+            // consume the last field we Read off the wire.
+            _lastFieldId = _lastField.Pop();
+        }
+
+        public override async Task<TField> ReadFieldBeginAsync(CancellationToken cancellationToken)
+        {
+            // Read a field header off the wire.
+            var type = (byte) await ReadByteAsync(cancellationToken);
+            // if it's a stop, then we can return immediately, as the struct is over.
+            if (type == Types.Stop)
+            {
+                return Tstop;
+            }
+
+            short fieldId;
+            // mask off the 4 MSB of the exType header. it could contain a field id delta.
+            var modifier = (short) ((type & 0xf0) >> 4);
+            if (modifier == 0)
+            {
+                fieldId = await ReadI16Async(cancellationToken);
+            }
+            else
+            {
+                fieldId = (short) (_lastFieldId + modifier);
+            }
+
+            var field = new TField(string.Empty, GetTType((byte) (type & 0x0f)), fieldId);
+            // if this happens to be a boolean field, the value is encoded in the exType
+            if (IsBoolType(type))
+            {
+                _boolValue = (byte) (type & 0x0f) == Types.BooleanTrue;
+            }
+
+            // push the new field onto the field stack so we can keep the deltas going.
+            _lastFieldId = field.ID;
+            return field;
+        }
+
+        public override async Task ReadFieldEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TMap> ReadMapBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled<TMap>(cancellationToken);
+            }
+
+            /*
+            Read a map header off the wire. If the size is zero, skip Reading the key
+            and value exType. This means that 0-length maps will yield TMaps without the
+            "correct" types.
+            */
+
+            var size = (int) await ReadVarInt32Async(cancellationToken);
+            var keyAndValueType = size == 0 ? (byte) 0 : (byte) await ReadByteAsync(cancellationToken);
+            return new TMap(GetTType((byte) (keyAndValueType >> 4)), GetTType((byte) (keyAndValueType & 0xf)), size);
+        }
+
+        public override async Task ReadMapEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task<TSet> ReadSetBeginAsync(CancellationToken cancellationToken)
+        {
+            /*
+            Read a set header off the wire. If the set size is 0-14, the size will
+            be packed into the element exType header. If it's a longer set, the 4 MSB
+            of the element exType header will be 0xF, and a varint will follow with the
+            true size.
+            */
+
+            return new TSet(await ReadListBeginAsync(cancellationToken));
+        }
+
+        public override async Task<bool> ReadBoolAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<bool>(cancellationToken);
+            }
+
+            /*
+            Read a boolean off the wire. If this is a boolean field, the value should
+            already have been Read during ReadFieldBegin, so we'll just consume the
+            pre-stored value. Otherwise, Read a byte.
+            */
+
+            if (_boolValue != null)
+            {
+                var result = _boolValue.Value;
+                _boolValue = null;
+                return result;
+            }
+
+            return await ReadByteAsync(cancellationToken) == Types.BooleanTrue;
+        }
+
+        public override async Task<sbyte> ReadByteAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<sbyte>(cancellationToken);
+            }
+
+            // Read a single byte off the wire. Nothing interesting here.
+            var buf = new byte[1];
+            await Trans.ReadAllAsync(buf, 0, 1, cancellationToken);
+            return (sbyte) buf[0];
+        }
+
+        public override async Task<short> ReadI16Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<short>(cancellationToken);
+            }
+
+            return (short) ZigzagToInt(await ReadVarInt32Async(cancellationToken));
+        }
+
+        public override async Task<int> ReadI32Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<int>(cancellationToken);
+            }
+
+            return ZigzagToInt(await ReadVarInt32Async(cancellationToken));
+        }
+
+        public override async Task<long> ReadI64Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<long>(cancellationToken);
+            }
+
+            return ZigzagToLong(await ReadVarInt64Async(cancellationToken));
+        }
+
+        public override async Task<double> ReadDoubleAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<double>(cancellationToken);
+            }
+
+            var longBits = new byte[8];
+            await Trans.ReadAllAsync(longBits, 0, 8, cancellationToken);
+
+            return BitConverter.Int64BitsToDouble(BytesToLong(longBits));
+        }
+
+        public override async Task<string> ReadStringAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled<string>(cancellationToken);
+            }
+
+            // Reads a byte[] (via ReadBinary), and then UTF-8 decodes it.
+            var length = (int) await ReadVarInt32Async(cancellationToken);
+
+            if (length == 0)
+            {
+                return string.Empty;
+            }
+
+            var buf = new byte[length];
+            await Trans.ReadAllAsync(buf, 0, length, cancellationToken);
+
+            return Encoding.UTF8.GetString(buf);
+        }
+
+        public override async Task<byte[]> ReadBinaryAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<byte[]>(cancellationToken);
+            }
+
+            // Read a byte[] from the wire.
+            var length = (int) await ReadVarInt32Async(cancellationToken);
+            if (length == 0)
+            {
+                return new byte[0];
+            }
+
+            var buf = new byte[length];
+            await Trans.ReadAllAsync(buf, 0, length, cancellationToken);
+            return buf;
+        }
+
+        public override async Task<TList> ReadListBeginAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled<TList>(cancellationToken);
+            }
+
+            /*
+            Read a list header off the wire. If the list size is 0-14, the size will
+            be packed into the element exType header. If it's a longer list, the 4 MSB
+            of the element exType header will be 0xF, and a varint will follow with the
+            true size.
+            */
+
+            var sizeAndType = (byte) await ReadByteAsync(cancellationToken);
+            var size = (sizeAndType >> 4) & 0x0f;
+            if (size == 15)
+            {
+                size = (int) await ReadVarInt32Async(cancellationToken);
+            }
+
+            var type = GetTType(sizeAndType);
+            return new TList(type, size);
+        }
+
+        public override async Task ReadListEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task ReadSetEndAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        private static byte GetCompactType(TType ttype)
+        {
+            // Given a TType value, find the appropriate TCompactProtocol.Types constant.
+            return TTypeToCompactType[(int) ttype];
+        }
+
+
+        private async Task<uint> ReadVarInt32Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<uint>(cancellationToken);
+            }
+
+            /*
+            Read an i32 from the wire as a varint. The MSB of each byte is set
+            if there is another byte to follow. This can Read up to 5 bytes.
+            */
+
+            uint result = 0;
+            var shift = 0;
+
+            while (true)
+            {
+                var b = (byte) await ReadByteAsync(cancellationToken);
+                result |= (uint) (b & 0x7f) << shift;
+                if ((b & 0x80) != 0x80)
+                {
+                    break;
+                }
+                shift += 7;
+            }
+
+            return result;
+        }
+
+        private async Task<ulong> ReadVarInt64Async(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<uint>(cancellationToken);
+            }
+
+            /*
+            Read an i64 from the wire as a proper varint. The MSB of each byte is set
+            if there is another byte to follow. This can Read up to 10 bytes.
+            */
+
+            var shift = 0;
+            ulong result = 0;
+            while (true)
+            {
+                var b = (byte) await ReadByteAsync(cancellationToken);
+                result |= (ulong) (b & 0x7f) << shift;
+                if ((b & 0x80) != 0x80)
+                {
+                    break;
+                }
+                shift += 7;
+            }
+
+            return result;
+        }
+
+        private static int ZigzagToInt(uint n)
+        {
+            return (int) (n >> 1) ^ -(int) (n & 1);
+        }
+
+        private static long ZigzagToLong(ulong n)
+        {
+            return (long) (n >> 1) ^ -(long) (n & 1);
+        }
+
+        private static long BytesToLong(byte[] bytes)
+        {
+            /*
+            Note that it's important that the mask bytes are long literals,
+            otherwise they'll default to ints, and when you shift an int left 56 bits,
+            you just get a messed up int.
+            */
+
+            return
+                ((bytes[7] & 0xffL) << 56) |
+                ((bytes[6] & 0xffL) << 48) |
+                ((bytes[5] & 0xffL) << 40) |
+                ((bytes[4] & 0xffL) << 32) |
+                ((bytes[3] & 0xffL) << 24) |
+                ((bytes[2] & 0xffL) << 16) |
+                ((bytes[1] & 0xffL) << 8) |
+                (bytes[0] & 0xffL);
+        }
+
+        private static bool IsBoolType(byte b)
+        {
+            var lowerNibble = b & 0x0f;
+            return (lowerNibble == Types.BooleanTrue) || (lowerNibble == Types.BooleanFalse);
+        }
+
+        private static TType GetTType(byte type)
+        {
+            // Given a TCompactProtocol.Types constant, convert it to its corresponding TType value.
+            switch ((byte) (type & 0x0f))
+            {
+                case Types.Stop:
+                    return TType.Stop;
+                case Types.BooleanFalse:
+                case Types.BooleanTrue:
+                    return TType.Bool;
+                case Types.Byte:
+                    return TType.Byte;
+                case Types.I16:
+                    return TType.I16;
+                case Types.I32:
+                    return TType.I32;
+                case Types.I64:
+                    return TType.I64;
+                case Types.Double:
+                    return TType.Double;
+                case Types.Binary:
+                    return TType.String;
+                case Types.List:
+                    return TType.List;
+                case Types.Set:
+                    return TType.Set;
+                case Types.Map:
+                    return TType.Map;
+                case Types.Struct:
+                    return TType.Struct;
+                default:
+                    throw new TProtocolException($"Don't know what exType: {(byte) (type & 0x0f)}");
+            }
+        }
+
+        private static ulong LongToZigzag(long n)
+        {
+            // Convert l into a zigzag long. This allows negative numbers to be represented compactly as a varint
+            return (ulong) (n << 1) ^ (ulong) (n >> 63);
+        }
+
+        private static uint IntToZigzag(int n)
+        {
+            // Convert n into a zigzag int. This allows negative numbers to be represented compactly as a varint
+            return (uint) (n << 1) ^ (uint) (n >> 31);
+        }
+
+        private static void FixedLongToBytes(long n, byte[] buf, int off)
+        {
+            // Convert a long into little-endian bytes in buf starting at off and going until off+7.
+            buf[off + 0] = (byte) (n & 0xff);
+            buf[off + 1] = (byte) ((n >> 8) & 0xff);
+            buf[off + 2] = (byte) ((n >> 16) & 0xff);
+            buf[off + 3] = (byte) ((n >> 24) & 0xff);
+            buf[off + 4] = (byte) ((n >> 32) & 0xff);
+            buf[off + 5] = (byte) ((n >> 40) & 0xff);
+            buf[off + 6] = (byte) ((n >> 48) & 0xff);
+            buf[off + 7] = (byte) ((n >> 56) & 0xff);
+        }
+
+        public class Factory : ITProtocolFactory
+        {
+            public TProtocol GetProtocol(TClientTransport trans)
+            {
+                return new TCompactProtocol(trans);
+            }
+        }
+
+        /// <summary>
+        ///     All of the on-wire exType codes.
+        /// </summary>
+        private static class Types
+        {
+            public const byte Stop = 0x00;
+            public const byte BooleanTrue = 0x01;
+            public const byte BooleanFalse = 0x02;
+            public const byte Byte = 0x03;
+            public const byte I16 = 0x04;
+            public const byte I32 = 0x05;
+            public const byte I64 = 0x06;
+            public const byte Double = 0x07;
+            public const byte Binary = 0x08;
+            public const byte List = 0x09;
+            public const byte Set = 0x0A;
+            public const byte Map = 0x0B;
+            public const byte Struct = 0x0C;
+        }
+    }
+}

lib/Thrift/Protocols/TJSONProtocol.cs

@@ -0,0 +1,981 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+using Thrift.Protocols.Utilities;
+using Thrift.Transports;
+
+namespace Thrift.Protocols
+{
+    /// <summary>
+    ///     JSON protocol implementation for thrift.
+    ///     This is a full-featured protocol supporting Write and Read.
+    ///     Please see the C++ class header for a detailed description of the
+    ///     protocol's wire format.
+    ///     Adapted from the Java version.
+    /// </summary>
+    // ReSharper disable once InconsistentNaming
+    public class TJsonProtocol : TProtocol
+    {
+        private const long Version = 1;
+
+        // Temporary buffer used by several methods
+        private readonly byte[] _tempBuffer = new byte[4];
+
+        // Current context that we are in
+        protected JSONBaseContext Context;
+
+        // Stack of nested contexts that we may be in
+        protected Stack<JSONBaseContext> ContextStack = new Stack<JSONBaseContext>();
+
+        // Reader that manages a 1-byte buffer
+        protected LookaheadReader Reader;
+
+        // Default encoding
+        protected Encoding Utf8Encoding = Encoding.UTF8;
+
+        /// <summary>
+        ///     TJsonProtocol Constructor
+        /// </summary>
+        public TJsonProtocol(TClientTransport trans)
+            : base(trans)
+        {
+            Context = new JSONBaseContext(this);
+            Reader = new LookaheadReader(this);
+        }
+
+        /// <summary>
+        ///     Push a new JSON context onto the stack.
+        /// </summary>
+        protected void PushContext(JSONBaseContext c)
+        {
+            ContextStack.Push(Context);
+            Context = c;
+        }
+
+        /// <summary>
+        ///     Pop the last JSON context off the stack
+        /// </summary>
+        protected void PopContext()
+        {
+            Context = ContextStack.Pop();
+        }
+
+        /// <summary>
+        ///     Read a byte that must match b[0]; otherwise an exception is thrown.
+        ///     Marked protected to avoid synthetic accessor in JSONListContext.Read
+        ///     and JSONPairContext.Read
+        /// </summary>
+        protected async Task ReadJsonSyntaxCharAsync(byte[] bytes, CancellationToken cancellationToken)
+        {
+            var ch = await Reader.ReadAsync(cancellationToken);
+            if (ch != bytes[0])
+            {
+                throw new TProtocolException(TProtocolException.INVALID_DATA, $"Unexpected character: {(char) ch}");
+            }
+        }
+
+        /// <summary>
+        ///     Write the bytes in array buf as a JSON characters, escaping as needed
+        /// </summary>
+        private async Task WriteJsonStringAsync(byte[] bytes, CancellationToken cancellationToken)
+        {
+            await Context.WriteAsync(cancellationToken);
+            await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+
+            var len = bytes.Length;
+            for (var i = 0; i < len; i++)
+            {
+                if ((bytes[i] & 0x00FF) >= 0x30)
+                {
+                    if (bytes[i] == TJSONProtocolConstants.Backslash[0])
+                    {
+                        await Trans.WriteAsync(TJSONProtocolConstants.Backslash, cancellationToken);
+                        await Trans.WriteAsync(TJSONProtocolConstants.Backslash, cancellationToken);
+                    }
+                    else
+                    {
+                        await Trans.WriteAsync(bytes.ToArray(), i, 1, cancellationToken);
+                    }
+                }
+                else
+                {
+                    _tempBuffer[0] = TJSONProtocolConstants.JsonCharTable[bytes[i]];
+                    if (_tempBuffer[0] == 1)
+                    {
+                        await Trans.WriteAsync(bytes, i, 1, cancellationToken);
+                    }
+                    else if (_tempBuffer[0] > 1)
+                    {
+                        await Trans.WriteAsync(TJSONProtocolConstants.Backslash, cancellationToken);
+                        await Trans.WriteAsync(_tempBuffer, 0, 1, cancellationToken);
+                    }
+                    else
+                    {
+                        await Trans.WriteAsync(TJSONProtocolConstants.EscSequences, cancellationToken);
+                        _tempBuffer[0] = TJSONProtocolHelper.ToHexChar((byte) (bytes[i] >> 4));
+                        _tempBuffer[1] = TJSONProtocolHelper.ToHexChar(bytes[i]);
+                        await Trans.WriteAsync(_tempBuffer, 0, 2, cancellationToken);
+                    }
+                }
+            }
+            await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+        }
+
+        /// <summary>
+        ///     Write out number as a JSON value. If the context dictates so, it will be
+        ///     wrapped in quotes to output as a JSON string.
+        /// </summary>
+        private async Task WriteJsonIntegerAsync(long num, CancellationToken cancellationToken)
+        {
+            await Context.WriteAsync(cancellationToken);
+            var str = num.ToString();
+
+            var escapeNum = Context.EscapeNumbers();
+            if (escapeNum)
+            {
+                await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+
+            var bytes = Utf8Encoding.GetBytes(str);
+            await Trans.WriteAsync(bytes, cancellationToken);
+
+            if (escapeNum)
+            {
+                await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+        }
+
+        /// <summary>
+        ///     Write out a double as a JSON value. If it is NaN or infinity or if the
+        ///     context dictates escaping, Write out as JSON string.
+        /// </summary>
+        private async Task WriteJsonDoubleAsync(double num, CancellationToken cancellationToken)
+        {
+            await Context.WriteAsync(cancellationToken);
+            var str = num.ToString("G17", CultureInfo.InvariantCulture);
+            var special = false;
+
+            switch (str[0])
+            {
+                case 'N': // NaN
+                case 'I': // Infinity
+                    special = true;
+                    break;
+                case '-':
+                    if (str[1] == 'I')
+                    {
+                        // -Infinity
+                        special = true;
+                    }
+                    break;
+            }
+
+            var escapeNum = special || Context.EscapeNumbers();
+
+            if (escapeNum)
+            {
+                await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+
+            await Trans.WriteAsync(Utf8Encoding.GetBytes(str), cancellationToken);
+
+            if (escapeNum)
+            {
+                await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+        }
+
+        /// <summary>
+        ///     Write out contents of byte array b as a JSON string with base-64 encoded
+        ///     data
+        /// </summary>
+        private async Task WriteJsonBase64Async(byte[] bytes, CancellationToken cancellationToken)
+        {
+            await Context.WriteAsync(cancellationToken);
+            await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+
+            var len = bytes.Length;
+            var off = 0;
+
+            while (len >= 3)
+            {
+                // Encode 3 bytes at a time
+                TBase64Helper.Encode(bytes, off, 3, _tempBuffer, 0);
+                await Trans.WriteAsync(_tempBuffer, 0, 4, cancellationToken);
+                off += 3;
+                len -= 3;
+            }
+
+            if (len > 0)
+            {
+                // Encode remainder
+                TBase64Helper.Encode(bytes, off, len, _tempBuffer, 0);
+                await Trans.WriteAsync(_tempBuffer, 0, len + 1, cancellationToken);
+            }
+
+            await Trans.WriteAsync(TJSONProtocolConstants.Quote, cancellationToken);
+        }
+
+        private async Task WriteJsonObjectStartAsync(CancellationToken cancellationToken)
+        {
+            await Context.WriteAsync(cancellationToken);
+            await Trans.WriteAsync(TJSONProtocolConstants.LeftBrace, cancellationToken);
+            PushContext(new JSONPairContext(this));
+        }
+
+        private async Task WriteJsonObjectEndAsync(CancellationToken cancellationToken)
+        {
+            PopContext();
+            await Trans.WriteAsync(TJSONProtocolConstants.RightBrace, cancellationToken);
+        }
+
+        private async Task WriteJsonArrayStartAsync(CancellationToken cancellationToken)
+        {
+            await Context.WriteAsync(cancellationToken);
+            await Trans.WriteAsync(TJSONProtocolConstants.LeftBracket, cancellationToken);
+            PushContext(new JSONListContext(this));
+        }
+
+        private async Task WriteJsonArrayEndAsync(CancellationToken cancellationToken)
+        {
+            PopContext();
+            await Trans.WriteAsync(TJSONProtocolConstants.RightBracket, cancellationToken);
+        }
+
+        public override async Task WriteMessageBeginAsync(TMessage message, CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayStartAsync(cancellationToken);
+            await WriteJsonIntegerAsync(Version, cancellationToken);
+
+            var b = Utf8Encoding.GetBytes(message.Name);
+            await WriteJsonStringAsync(b, cancellationToken);
+
+            await WriteJsonIntegerAsync((long) message.Type, cancellationToken);
+            await WriteJsonIntegerAsync(message.SeqID, cancellationToken);
+        }
+
+        public override async Task WriteMessageEndAsync(CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteStructBeginAsync(TStruct @struct, CancellationToken cancellationToken)
+        {
+            await WriteJsonObjectStartAsync(cancellationToken);
+        }
+
+        public override async Task WriteStructEndAsync(CancellationToken cancellationToken)
+        {
+            await WriteJsonObjectEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteFieldBeginAsync(TField field, CancellationToken cancellationToken)
+        {
+            await WriteJsonIntegerAsync(field.ID, cancellationToken);
+            await WriteJsonObjectStartAsync(cancellationToken);
+            await WriteJsonStringAsync(TJSONProtocolHelper.GetTypeNameForTypeId(field.Type), cancellationToken);
+        }
+
+        public override async Task WriteFieldEndAsync(CancellationToken cancellationToken)
+        {
+            await WriteJsonObjectEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteFieldStopAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override async Task WriteMapBeginAsync(TMap map, CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayStartAsync(cancellationToken);
+            await WriteJsonStringAsync(TJSONProtocolHelper.GetTypeNameForTypeId(map.KeyType), cancellationToken);
+            await WriteJsonStringAsync(TJSONProtocolHelper.GetTypeNameForTypeId(map.ValueType), cancellationToken);
+            await WriteJsonIntegerAsync(map.Count, cancellationToken);
+            await WriteJsonObjectStartAsync(cancellationToken);
+        }
+
+        public override async Task WriteMapEndAsync(CancellationToken cancellationToken)
+        {
+            await WriteJsonObjectEndAsync(cancellationToken);
+            await WriteJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteListBeginAsync(TList list, CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayStartAsync(cancellationToken);
+            await WriteJsonStringAsync(TJSONProtocolHelper.GetTypeNameForTypeId(list.ElementType), cancellationToken);
+            await WriteJsonIntegerAsync(list.Count, cancellationToken);
+        }
+
+        public override async Task WriteListEndAsync(CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteSetBeginAsync(TSet set, CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayStartAsync(cancellationToken);
+            await WriteJsonStringAsync(TJSONProtocolHelper.GetTypeNameForTypeId(set.ElementType), cancellationToken);
+            await WriteJsonIntegerAsync(set.Count, cancellationToken);
+        }
+
+        public override async Task WriteSetEndAsync(CancellationToken cancellationToken)
+        {
+            await WriteJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteBoolAsync(bool b, CancellationToken cancellationToken)
+        {
+            await WriteJsonIntegerAsync(b ? 1 : 0, cancellationToken);
+        }
+
+        public override async Task WriteByteAsync(sbyte b, CancellationToken cancellationToken)
+        {
+            await WriteJsonIntegerAsync(b, cancellationToken);
+        }
+
+        public override async Task WriteI16Async(short i16, CancellationToken cancellationToken)
+        {
+            await WriteJsonIntegerAsync(i16, cancellationToken);
+        }
+
+        public override async Task WriteI32Async(int i32, CancellationToken cancellationToken)
+        {
+            await WriteJsonIntegerAsync(i32, cancellationToken);
+        }
+
+        public override async Task WriteI64Async(long i64, CancellationToken cancellationToken)
+        {
+            await WriteJsonIntegerAsync(i64, cancellationToken);
+        }
+
+        public override async Task WriteDoubleAsync(double d, CancellationToken cancellationToken)
+        {
+            await WriteJsonDoubleAsync(d, cancellationToken);
+        }
+
+        public override async Task WriteStringAsync(string s, CancellationToken cancellationToken)
+        {
+            var b = Utf8Encoding.GetBytes(s);
+            await WriteJsonStringAsync(b, cancellationToken);
+        }
+
+        public override async Task WriteBinaryAsync(byte[] bytes, CancellationToken cancellationToken)
+        {
+            await WriteJsonBase64Async(bytes, cancellationToken);
+        }
+
+        /// <summary>
+        ///     Read in a JSON string, unescaping as appropriate.. Skip Reading from the
+        ///     context if skipContext is true.
+        /// </summary>
+        private async Task<byte[]> ReadJsonStringAsync(bool skipContext, CancellationToken cancellationToken)
+        {
+            using (var buffer = new MemoryStream())
+            {
+                var codeunits = new List<char>();
+
+
+                if (!skipContext)
+                {
+                    await Context.ReadAsync(cancellationToken);
+                }
+
+                await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.Quote, cancellationToken);
+
+                while (true)
+                {
+                    var ch = await Reader.ReadAsync(cancellationToken);
+                    if (ch == TJSONProtocolConstants.Quote[0])
+                    {
+                        break;
+                    }
+
+                    // escaped?
+                    if (ch != TJSONProtocolConstants.EscSequences[0])
+                    {
+                        await buffer.WriteAsync(new[] {ch}, 0, 1, cancellationToken);
+                        continue;
+                    }
+
+                    // distinguish between \uXXXX and \?
+                    ch = await Reader.ReadAsync(cancellationToken);
+                    if (ch != TJSONProtocolConstants.EscSequences[1]) // control chars like \n
+                    {
+                        var off = Array.IndexOf(TJSONProtocolConstants.EscapeChars, (char) ch);
+                        if (off == -1)
+                        {
+                            throw new TProtocolException(TProtocolException.INVALID_DATA, "Expected control char");
+                        }
+                        ch = TJSONProtocolConstants.EscapeCharValues[off];
+                        await buffer.WriteAsync(new[] {ch}, 0, 1, cancellationToken);
+                        continue;
+                    }
+
+                    // it's \uXXXX
+                    await Trans.ReadAllAsync(_tempBuffer, 0, 4, cancellationToken);
+
+                    var wch = (short) ((TJSONProtocolHelper.ToHexVal(_tempBuffer[0]) << 12) +
+                                       (TJSONProtocolHelper.ToHexVal(_tempBuffer[1]) << 8) +
+                                       (TJSONProtocolHelper.ToHexVal(_tempBuffer[2]) << 4) +
+                                       TJSONProtocolHelper.ToHexVal(_tempBuffer[3]));
+
+                    if (char.IsHighSurrogate((char) wch))
+                    {
+                        if (codeunits.Count > 0)
+                        {
+                            throw new TProtocolException(TProtocolException.INVALID_DATA, "Expected low surrogate char");
+                        }
+                        codeunits.Add((char) wch);
+                    }
+                    else if (char.IsLowSurrogate((char) wch))
+                    {
+                        if (codeunits.Count == 0)
+                        {
+                            throw new TProtocolException(TProtocolException.INVALID_DATA, "Expected high surrogate char");
+                        }
+
+                        codeunits.Add((char) wch);
+                        var tmp = Utf8Encoding.GetBytes(codeunits.ToArray());
+                        await buffer.WriteAsync(tmp, 0, tmp.Length, cancellationToken);
+                        codeunits.Clear();
+                    }
+                    else
+                    {
+                        var tmp = Utf8Encoding.GetBytes(new[] {(char) wch});
+                        await buffer.WriteAsync(tmp, 0, tmp.Length, cancellationToken);
+                    }
+                }
+
+                if (codeunits.Count > 0)
+                {
+                    throw new TProtocolException(TProtocolException.INVALID_DATA, "Expected low surrogate char");
+                }
+
+                return buffer.ToArray();
+            }
+        }
+
+        /// <summary>
+        ///     Read in a sequence of characters that are all valid in JSON numbers. Does
+        ///     not do a complete regex check to validate that this is actually a number.
+        /// </summary>
+        private async Task<string> ReadJsonNumericCharsAsync(CancellationToken cancellationToken)
+        {
+            var strbld = new StringBuilder();
+            while (true)
+            {
+                //TODO: workaround for primitive types with TJsonProtocol, think - how to rewrite into more easy form without exceptions
+                try
+                {
+                    var ch = await Reader.PeekAsync(cancellationToken);
+                    if (!TJSONProtocolHelper.IsJsonNumeric(ch))
+                    {
+                        break;
+                    }
+                    var c = (char)await Reader.ReadAsync(cancellationToken);
+                    strbld.Append(c);
+                }
+                catch (TTransportException)
+                {
+                    break;
+                }
+            }
+            return strbld.ToString();
+        }
+
+        /// <summary>
+        ///     Read in a JSON number. If the context dictates, Read in enclosing quotes.
+        /// </summary>
+        private async Task<long> ReadJsonIntegerAsync(CancellationToken cancellationToken)
+        {
+            await Context.ReadAsync(cancellationToken);
+            if (Context.EscapeNumbers())
+            {
+                await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+
+            var str = await ReadJsonNumericCharsAsync(cancellationToken);
+            if (Context.EscapeNumbers())
+            {
+                await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+
+            try
+            {
+                return long.Parse(str);
+            }
+            catch (FormatException)
+            {
+                throw new TProtocolException(TProtocolException.INVALID_DATA, "Bad data encounted in numeric data");
+            }
+        }
+
+        /// <summary>
+        ///     Read in a JSON double value. Throw if the value is not wrapped in quotes
+        ///     when expected or if wrapped in quotes when not expected.
+        /// </summary>
+        private async Task<double> ReadJsonDoubleAsync(CancellationToken cancellationToken)
+        {
+            await Context.ReadAsync(cancellationToken);
+            if (await Reader.PeekAsync(cancellationToken) == TJSONProtocolConstants.Quote[0])
+            {
+                var arr = await ReadJsonStringAsync(true, cancellationToken);
+                var dub = double.Parse(Utf8Encoding.GetString(arr, 0, arr.Length), CultureInfo.InvariantCulture);
+
+                if (!Context.EscapeNumbers() && !double.IsNaN(dub) && !double.IsInfinity(dub))
+                {
+                    // Throw exception -- we should not be in a string in this case
+                    throw new TProtocolException(TProtocolException.INVALID_DATA, "Numeric data unexpectedly quoted");
+                }
+
+                return dub;
+            }
+
+            if (Context.EscapeNumbers())
+            {
+                // This will throw - we should have had a quote if escapeNum == true
+                await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.Quote, cancellationToken);
+            }
+
+            try
+            {
+                return double.Parse(await ReadJsonNumericCharsAsync(cancellationToken), CultureInfo.InvariantCulture);
+            }
+            catch (FormatException)
+            {
+                throw new TProtocolException(TProtocolException.INVALID_DATA, "Bad data encounted in numeric data");
+            }
+        }
+
+        /// <summary>
+        ///     Read in a JSON string containing base-64 encoded data and decode it.
+        /// </summary>
+        private async Task<byte[]> ReadJsonBase64Async(CancellationToken cancellationToken)
+        {
+            var b = await ReadJsonStringAsync(false, cancellationToken);
+            var len = b.Length;
+            var off = 0;
+            var size = 0;
+
+            // reduce len to ignore fill bytes
+            while ((len > 0) && (b[len - 1] == '='))
+            {
+                --len;
+            }
+
+            // read & decode full byte triplets = 4 source bytes
+            while (len > 4)
+            {
+                // Decode 4 bytes at a time
+                TBase64Helper.Decode(b, off, 4, b, size); // NB: decoded in place
+                off += 4;
+                len -= 4;
+                size += 3;
+            }
+
+            // Don't decode if we hit the end or got a single leftover byte (invalid
+            // base64 but legal for skip of regular string exType)
+            if (len > 1)
+            {
+                // Decode remainder
+                TBase64Helper.Decode(b, off, len, b, size); // NB: decoded in place
+                size += len - 1;
+            }
+
+            // Sadly we must copy the byte[] (any way around this?)
+            var result = new byte[size];
+            Array.Copy(b, 0, result, 0, size);
+            return result;
+        }
+
+        private async Task ReadJsonObjectStartAsync(CancellationToken cancellationToken)
+        {
+            await Context.ReadAsync(cancellationToken);
+            await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.LeftBrace, cancellationToken);
+            PushContext(new JSONPairContext(this));
+        }
+
+        private async Task ReadJsonObjectEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.RightBrace, cancellationToken);
+            PopContext();
+        }
+
+        private async Task ReadJsonArrayStartAsync(CancellationToken cancellationToken)
+        {
+            await Context.ReadAsync(cancellationToken);
+            await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.LeftBracket, cancellationToken);
+            PushContext(new JSONListContext(this));
+        }
+
+        private async Task ReadJsonArrayEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonSyntaxCharAsync(TJSONProtocolConstants.RightBracket, cancellationToken);
+            PopContext();
+        }
+
+        public override async Task<TMessage> ReadMessageBeginAsync(CancellationToken cancellationToken)
+        {
+            var message = new TMessage();
+            await ReadJsonArrayStartAsync(cancellationToken);
+            if (await ReadJsonIntegerAsync(cancellationToken) != Version)
+            {
+                throw new TProtocolException(TProtocolException.BAD_VERSION, "Message contained bad version.");
+            }
+
+            var buf = await ReadJsonStringAsync(false, cancellationToken);
+            message.Name = Utf8Encoding.GetString(buf, 0, buf.Length);
+            message.Type = (TMessageType) await ReadJsonIntegerAsync(cancellationToken);
+            message.SeqID = (int) await ReadJsonIntegerAsync(cancellationToken);
+            return message;
+        }
+
+        public override async Task ReadMessageEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task<TStruct> ReadStructBeginAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonObjectStartAsync(cancellationToken);
+            return new TStruct();
+        }
+
+        public override async Task ReadStructEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonObjectEndAsync(cancellationToken);
+        }
+
+        public override async Task<TField> ReadFieldBeginAsync(CancellationToken cancellationToken)
+        {
+            var field = new TField();
+            var ch = await Reader.PeekAsync(cancellationToken);
+            if (ch == TJSONProtocolConstants.RightBrace[0])
+            {
+                field.Type = TType.Stop;
+            }
+            else
+            {
+                field.ID = (short) await ReadJsonIntegerAsync(cancellationToken);
+                await ReadJsonObjectStartAsync(cancellationToken);
+                field.Type = TJSONProtocolHelper.GetTypeIdForTypeName(await ReadJsonStringAsync(false, cancellationToken));
+            }
+            return field;
+        }
+
+        public override async Task ReadFieldEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonObjectEndAsync(cancellationToken);
+        }
+
+        public override async Task<TMap> ReadMapBeginAsync(CancellationToken cancellationToken)
+        {
+            var map = new TMap();
+            await ReadJsonArrayStartAsync(cancellationToken);
+            map.KeyType = TJSONProtocolHelper.GetTypeIdForTypeName(await ReadJsonStringAsync(false, cancellationToken));
+            map.ValueType = TJSONProtocolHelper.GetTypeIdForTypeName(await ReadJsonStringAsync(false, cancellationToken));
+            map.Count = (int) await ReadJsonIntegerAsync(cancellationToken);
+            await ReadJsonObjectStartAsync(cancellationToken);
+            return map;
+        }
+
+        public override async Task ReadMapEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonObjectEndAsync(cancellationToken);
+            await ReadJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task<TList> ReadListBeginAsync(CancellationToken cancellationToken)
+        {
+            var list = new TList();
+            await ReadJsonArrayStartAsync(cancellationToken);
+            list.ElementType = TJSONProtocolHelper.GetTypeIdForTypeName(await ReadJsonStringAsync(false, cancellationToken));
+            list.Count = (int) await ReadJsonIntegerAsync(cancellationToken);
+            return list;
+        }
+
+        public override async Task ReadListEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task<TSet> ReadSetBeginAsync(CancellationToken cancellationToken)
+        {
+            var set = new TSet();
+            await ReadJsonArrayStartAsync(cancellationToken);
+            set.ElementType = TJSONProtocolHelper.GetTypeIdForTypeName(await ReadJsonStringAsync(false, cancellationToken));
+            set.Count = (int) await ReadJsonIntegerAsync(cancellationToken);
+            return set;
+        }
+
+        public override async Task ReadSetEndAsync(CancellationToken cancellationToken)
+        {
+            await ReadJsonArrayEndAsync(cancellationToken);
+        }
+
+        public override async Task<bool> ReadBoolAsync(CancellationToken cancellationToken)
+        {
+            return await ReadJsonIntegerAsync(cancellationToken) != 0;
+        }
+
+        public override async Task<sbyte> ReadByteAsync(CancellationToken cancellationToken)
+        {
+            return (sbyte) await ReadJsonIntegerAsync(cancellationToken);
+        }
+
+        public override async Task<short> ReadI16Async(CancellationToken cancellationToken)
+        {
+            return (short) await ReadJsonIntegerAsync(cancellationToken);
+        }
+
+        public override async Task<int> ReadI32Async(CancellationToken cancellationToken)
+        {
+            return (int) await ReadJsonIntegerAsync(cancellationToken);
+        }
+
+        public override async Task<long> ReadI64Async(CancellationToken cancellationToken)
+        {
+            return await ReadJsonIntegerAsync(cancellationToken);
+        }
+
+        public override async Task<double> ReadDoubleAsync(CancellationToken cancellationToken)
+        {
+            return await ReadJsonDoubleAsync(cancellationToken);
+        }
+
+        public override async Task<string> ReadStringAsync(CancellationToken cancellationToken)
+        {
+            var buf = await ReadJsonStringAsync(false, cancellationToken);
+            return Utf8Encoding.GetString(buf, 0, buf.Length);
+        }
+
+        public override async Task<byte[]> ReadBinaryAsync(CancellationToken cancellationToken)
+        {
+            return await ReadJsonBase64Async(cancellationToken);
+        }
+
+        /// <summary>
+        ///     Factory for JSON protocol objects
+        /// </summary>
+        public class Factory : ITProtocolFactory
+        {
+            public TProtocol GetProtocol(TClientTransport trans)
+            {
+                return new TJsonProtocol(trans);
+            }
+        }
+
+        /// <summary>
+        ///     Base class for tracking JSON contexts that may require
+        ///     inserting/Reading additional JSON syntax characters
+        ///     This base context does nothing.
+        /// </summary>
+        protected class JSONBaseContext
+        {
+            protected TJsonProtocol Proto;
+
+            public JSONBaseContext(TJsonProtocol proto)
+            {
+                Proto = proto;
+            }
+
+            public virtual async Task WriteAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    await Task.FromCanceled(cancellationToken);
+                }
+            }
+
+            public virtual async Task ReadAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    await Task.FromCanceled(cancellationToken);
+                }
+            }
+
+            public virtual bool EscapeNumbers()
+            {
+                return false;
+            }
+        }
+
+        /// <summary>
+        ///     Context for JSON lists. Will insert/Read commas before each item except
+        ///     for the first one
+        /// </summary>
+        protected class JSONListContext : JSONBaseContext
+        {
+            private bool _first = true;
+
+            public JSONListContext(TJsonProtocol protocol)
+                : base(protocol)
+            {
+            }
+
+            public override async Task WriteAsync(CancellationToken cancellationToken)
+            {
+                if (_first)
+                {
+                    _first = false;
+                }
+                else
+                {
+                    await Proto.Trans.WriteAsync(TJSONProtocolConstants.Comma, cancellationToken);
+                }
+            }
+
+            public override async Task ReadAsync(CancellationToken cancellationToken)
+            {
+                if (_first)
+                {
+                    _first = false;
+                }
+                else
+                {
+                    await Proto.ReadJsonSyntaxCharAsync(TJSONProtocolConstants.Comma, cancellationToken);
+                }
+            }
+        }
+
+        /// <summary>
+        ///     Context for JSON records. Will insert/Read colons before the value portion
+        ///     of each record pair, and commas before each key except the first. In
+        ///     addition, will indicate that numbers in the key position need to be
+        ///     escaped in quotes (since JSON keys must be strings).
+        /// </summary>
+        // ReSharper disable once InconsistentNaming
+        protected class JSONPairContext : JSONBaseContext
+        {
+            private bool _colon = true;
+
+            private bool _first = true;
+
+            public JSONPairContext(TJsonProtocol proto)
+                : base(proto)
+            {
+            }
+
+            public override async Task WriteAsync(CancellationToken cancellationToken)
+            {
+                if (_first)
+                {
+                    _first = false;
+                    _colon = true;
+                }
+                else
+                {
+                    await Proto.Trans.WriteAsync(_colon ? TJSONProtocolConstants.Colon : TJSONProtocolConstants.Comma, cancellationToken);
+                    _colon = !_colon;
+                }
+            }
+
+            public override async Task ReadAsync(CancellationToken cancellationToken)
+            {
+                if (_first)
+                {
+                    _first = false;
+                    _colon = true;
+                }
+                else
+                {
+                    await Proto.ReadJsonSyntaxCharAsync(_colon ? TJSONProtocolConstants.Colon : TJSONProtocolConstants.Comma, cancellationToken);
+                    _colon = !_colon;
+                }
+            }
+
+            public override bool EscapeNumbers()
+            {
+                return _colon;
+            }
+        }
+
+        /// <summary>
+        ///     Holds up to one byte from the transport
+        /// </summary>
+        protected class LookaheadReader
+        {
+            private readonly byte[] _data = new byte[1];
+
+            private bool _hasData;
+            protected TJsonProtocol Proto;
+
+            public LookaheadReader(TJsonProtocol proto)
+            {
+                Proto = proto;
+            }
+
+            /// <summary>
+            ///     Return and consume the next byte to be Read, either taking it from the
+            ///     data buffer if present or getting it from the transport otherwise.
+            /// </summary>
+            public async Task<byte> ReadAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return await Task.FromCanceled<byte>(cancellationToken);
+                }
+
+                if (_hasData)
+                {
+                    _hasData = false;
+                }
+                else
+                {
+                    // find more easy way to avoid exception on reading primitive types
+                    await Proto.Trans.ReadAllAsync(_data, 0, 1, cancellationToken);
+                }
+                return _data[0];
+            }
+
+            /// <summary>
+            ///     Return the next byte to be Read without consuming, filling the data
+            ///     buffer if it has not been filled alReady.
+            /// </summary>
+            public async Task<byte> PeekAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return await Task.FromCanceled<byte>(cancellationToken);
+                }
+
+                if (!_hasData)
+                {
+                    // find more easy way to avoid exception on reading primitive types
+                    await Proto.Trans.ReadAllAsync(_data, 0, 1, cancellationToken);
+                }
+                _hasData = true;
+                return _data[0];
+            }
+        }
+    }
+}

lib/Thrift/Protocols/TMultiplexedProtocol.cs

@@ -0,0 +1,91 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+
+namespace Thrift.Protocols
+{
+    /**
+    * TMultiplexedProtocol is a protocol-independent concrete decorator that allows a Thrift
+    * client to communicate with a multiplexing Thrift server, by prepending the service name
+    * to the function name during function calls.
+    *
+    * NOTE: THIS IS NOT TO BE USED BY SERVERS.
+    * On the server, use TMultiplexedProcessor to handle requests from a multiplexing client.
+    *
+    * This example uses a single socket transport to invoke two services:
+    *
+    *     TSocketClientTransport transport = new TSocketClientTransport("localhost", 9090);
+    *     transport.open();
+    *
+    *     TBinaryProtocol protocol = new TBinaryProtocol(transport);
+    *
+    *     TMultiplexedProtocol mp = new TMultiplexedProtocol(protocol, "Calculator");
+    *     Calculator.Client service = new Calculator.Client(mp);
+    *
+    *     TMultiplexedProtocol mp2 = new TMultiplexedProtocol(protocol, "WeatherReport");
+    *     WeatherReport.Client service2 = new WeatherReport.Client(mp2);
+    *
+    *     System.out.println(service.add(2,2));
+    *     System.out.println(service2.getTemperature());
+    *
+    */
+
+    //TODO: implementation of TProtocol
+
+    // ReSharper disable once InconsistentNaming
+    public class TMultiplexedProtocol : TProtocolDecorator
+    {
+        /** Used to delimit the service name from the function name */
+        public const string Separator = ":";
+
+        private readonly string _serviceName;
+
+        /**
+         * Wrap the specified protocol, allowing it to be used to communicate with a
+         * multiplexing server.  The <code>serviceName</code> is required as it is
+         * prepended to the message header so that the multiplexing server can broker
+         * the function call to the proper service.
+         *
+         * Args:
+         *  protocol        Your communication protocol of choice, e.g. TBinaryProtocol
+         *  serviceName     The service name of the service communicating via this protocol.
+         */
+
+        public TMultiplexedProtocol(TProtocol protocol, string serviceName)
+            : base(protocol)
+        {
+            _serviceName = serviceName;
+        }
+
+        public override async Task WriteMessageBeginAsync(TMessage message, CancellationToken cancellationToken)
+        {
+            switch (message.Type)
+            {
+                case TMessageType.Call:
+                case TMessageType.Oneway:
+                    await base.WriteMessageBeginAsync(new TMessage($"{_serviceName}{Separator}{message.Name}", message.Type, message.SeqID), cancellationToken);
+                    break;
+                default:
+                    await base.WriteMessageBeginAsync(message, cancellationToken);
+                    break;
+            }
+        }
+    }
+}

lib/Thrift/Protocols/TProtocol.cs

@@ -0,0 +1,376 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+using Thrift.Transports;
+
+namespace Thrift.Protocols
+{
+    // ReSharper disable once InconsistentNaming
+    public abstract class TProtocol : IDisposable
+    {
+        public const int DefaultRecursionDepth = 64;
+        private bool _isDisposed;
+        protected int RecursionDepth;
+
+        protected TClientTransport Trans;
+
+        protected TProtocol(TClientTransport trans)
+        {
+            Trans = trans;
+            RecursionLimit = DefaultRecursionDepth;
+            RecursionDepth = 0;
+        }
+
+        public TClientTransport Transport => Trans;
+
+        protected int RecursionLimit { get; set; }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        public void IncrementRecursionDepth()
+        {
+            if (RecursionDepth < RecursionLimit)
+            {
+                ++RecursionDepth;
+            }
+            else
+            {
+                throw new TProtocolException(TProtocolException.DEPTH_LIMIT, "Depth limit exceeded");
+            }
+        }
+
+        public void DecrementRecursionDepth()
+        {
+            --RecursionDepth;
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    (Trans as IDisposable)?.Dispose();
+                }
+            }
+            _isDisposed = true;
+        }
+
+        public virtual async Task WriteMessageBeginAsync(TMessage message)
+        {
+            await WriteMessageBeginAsync(message, CancellationToken.None);
+        }
+
+        public abstract Task WriteMessageBeginAsync(TMessage message, CancellationToken cancellationToken);
+
+        public virtual async Task WriteMessageEndAsync()
+        {
+            await WriteMessageEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteMessageEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteStructBeginAsync(TStruct @struct)
+        {
+            await WriteStructBeginAsync(@struct, CancellationToken.None);
+        }
+
+        public abstract Task WriteStructBeginAsync(TStruct @struct, CancellationToken cancellationToken);
+
+        public virtual async Task WriteStructEndAsync()
+        {
+            await WriteStructEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteStructEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteFieldBeginAsync(TField field)
+        {
+            await WriteFieldBeginAsync(field, CancellationToken.None);
+        }
+
+        public abstract Task WriteFieldBeginAsync(TField field, CancellationToken cancellationToken);
+
+        public virtual async Task WriteFieldEndAsync()
+        {
+            await WriteFieldEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteFieldEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteFieldStopAsync()
+        {
+            await WriteFieldStopAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteFieldStopAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteMapBeginAsync(TMap map)
+        {
+            await WriteMapBeginAsync(map, CancellationToken.None);
+        }
+
+        public abstract Task WriteMapBeginAsync(TMap map, CancellationToken cancellationToken);
+
+        public virtual async Task WriteMapEndAsync()
+        {
+            await WriteMapEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteMapEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteListBeginAsync(TList list)
+        {
+            await WriteListBeginAsync(list, CancellationToken.None);
+        }
+
+        public abstract Task WriteListBeginAsync(TList list, CancellationToken cancellationToken);
+
+        public virtual async Task WriteListEndAsync()
+        {
+            await WriteListEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteListEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteSetBeginAsync(TSet set)
+        {
+            await WriteSetBeginAsync(set, CancellationToken.None);
+        }
+
+        public abstract Task WriteSetBeginAsync(TSet set, CancellationToken cancellationToken);
+
+        public virtual async Task WriteSetEndAsync()
+        {
+            await WriteSetEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task WriteSetEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task WriteBoolAsync(bool b)
+        {
+            await WriteBoolAsync(b, CancellationToken.None);
+        }
+
+        public abstract Task WriteBoolAsync(bool b, CancellationToken cancellationToken);
+
+        public virtual async Task WriteByteAsync(sbyte b)
+        {
+            await WriteByteAsync(b, CancellationToken.None);
+        }
+
+        public abstract Task WriteByteAsync(sbyte b, CancellationToken cancellationToken);
+
+        public virtual async Task WriteI16Async(short i16)
+        {
+            await WriteI16Async(i16, CancellationToken.None);
+        }
+
+        public abstract Task WriteI16Async(short i16, CancellationToken cancellationToken);
+
+        public virtual async Task WriteI32Async(int i32)
+        {
+            await WriteI32Async(i32, CancellationToken.None);
+        }
+
+        public abstract Task WriteI32Async(int i32, CancellationToken cancellationToken);
+
+        public virtual async Task WriteI64Async(long i64)
+        {
+            await WriteI64Async(i64, CancellationToken.None);
+        }
+
+        public abstract Task WriteI64Async(long i64, CancellationToken cancellationToken);
+
+        public virtual async Task WriteDoubleAsync(double d)
+        {
+            await WriteDoubleAsync(d, CancellationToken.None);
+        }
+
+        public abstract Task WriteDoubleAsync(double d, CancellationToken cancellationToken);
+
+        public virtual async Task WriteStringAsync(string s)
+        {
+            await WriteStringAsync(s, CancellationToken.None);
+        }
+
+        public virtual async Task WriteStringAsync(string s, CancellationToken cancellationToken)
+        {
+            var bytes = Encoding.UTF8.GetBytes(s);
+            await WriteBinaryAsync(bytes, cancellationToken);
+        }
+
+        public virtual async Task WriteBinaryAsync(byte[] bytes)
+        {
+            await WriteBinaryAsync(bytes, CancellationToken.None);
+        }
+
+        public abstract Task WriteBinaryAsync(byte[] bytes, CancellationToken cancellationToken);
+
+        public virtual async Task<TMessage> ReadMessageBeginAsync()
+        {
+            return await ReadMessageBeginAsync(CancellationToken.None);
+        }
+
+        public abstract Task<TMessage> ReadMessageBeginAsync(CancellationToken cancellationToken);
+
+        public virtual async Task ReadMessageEndAsync()
+        {
+            await ReadMessageEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task ReadMessageEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<TStruct> ReadStructBeginAsync()
+        {
+            return await ReadStructBeginAsync(CancellationToken.None);
+        }
+
+        public abstract Task<TStruct> ReadStructBeginAsync(CancellationToken cancellationToken);
+
+        public virtual async Task ReadStructEndAsync()
+        {
+            await ReadStructEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task ReadStructEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<TField> ReadFieldBeginAsync()
+        {
+            return await ReadFieldBeginAsync(CancellationToken.None);
+        }
+
+        public abstract Task<TField> ReadFieldBeginAsync(CancellationToken cancellationToken);
+
+        public virtual async Task ReadFieldEndAsync()
+        {
+            await ReadFieldEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task ReadFieldEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<TMap> ReadMapBeginAsync()
+        {
+            return await ReadMapBeginAsync(CancellationToken.None);
+        }
+
+        public abstract Task<TMap> ReadMapBeginAsync(CancellationToken cancellationToken);
+
+        public virtual async Task ReadMapEndAsync()
+        {
+            await ReadMapEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task ReadMapEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<TList> ReadListBeginAsync()
+        {
+            return await ReadListBeginAsync(CancellationToken.None);
+        }
+
+        public abstract Task<TList> ReadListBeginAsync(CancellationToken cancellationToken);
+
+        public virtual async Task ReadListEndAsync()
+        {
+            await ReadListEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task ReadListEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<TSet> ReadSetBeginAsync()
+        {
+            return await ReadSetBeginAsync(CancellationToken.None);
+        }
+
+        public abstract Task<TSet> ReadSetBeginAsync(CancellationToken cancellationToken);
+
+        public virtual async Task ReadSetEndAsync()
+        {
+            await ReadSetEndAsync(CancellationToken.None);
+        }
+
+        public abstract Task ReadSetEndAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<bool> ReadBoolAsync()
+        {
+            return await ReadBoolAsync(CancellationToken.None);
+        }
+
+        public abstract Task<bool> ReadBoolAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<sbyte> ReadByteAsync()
+        {
+            return await ReadByteAsync(CancellationToken.None);
+        }
+
+        public abstract Task<sbyte> ReadByteAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<short> ReadI16Async()
+        {
+            return await ReadI16Async(CancellationToken.None);
+        }
+
+        public abstract Task<short> ReadI16Async(CancellationToken cancellationToken);
+
+        public virtual async Task<int> ReadI32Async()
+        {
+            return await ReadI32Async(CancellationToken.None);
+        }
+
+        public abstract Task<int> ReadI32Async(CancellationToken cancellationToken);
+
+        public virtual async Task<long> ReadI64Async()
+        {
+            return await ReadI64Async(CancellationToken.None);
+        }
+
+        public abstract Task<long> ReadI64Async(CancellationToken cancellationToken);
+
+        public virtual async Task<double> ReadDoubleAsync()
+        {
+            return await ReadDoubleAsync(CancellationToken.None);
+        }
+
+        public abstract Task<double> ReadDoubleAsync(CancellationToken cancellationToken);
+
+        public virtual async Task<string> ReadStringAsync()
+        {
+            return await ReadStringAsync(CancellationToken.None);
+        }
+
+        public virtual async Task<string> ReadStringAsync(CancellationToken cancellationToken)
+        {
+            var buf = await ReadBinaryAsync(cancellationToken);
+            return Encoding.UTF8.GetString(buf, 0, buf.Length);
+        }
+
+        public virtual async Task<byte[]> ReadBinaryAsync()
+        {
+            return await ReadBinaryAsync(CancellationToken.None);
+        }
+
+        public abstract Task<byte[]> ReadBinaryAsync(CancellationToken cancellationToken);
+    }
+}

lib/Thrift/Protocols/TProtocolDecorator.cs

@@ -0,0 +1,247 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+
+namespace Thrift.Protocols
+{
+    // ReSharper disable once InconsistentNaming
+    /// <summary>
+    ///     TProtocolDecorator forwards all requests to an enclosed TProtocol instance,
+    ///     providing a way to author concise concrete decorator subclasses.While it has
+    ///     no abstract methods, it is marked abstract as a reminder that by itself,
+    ///     it does not modify the behaviour of the enclosed TProtocol.
+    /// </summary>
+    public abstract class TProtocolDecorator : TProtocol
+    {
+        private readonly TProtocol _wrappedProtocol;
+
+        protected TProtocolDecorator(TProtocol protocol)
+            : base(protocol.Transport)
+        {
+            _wrappedProtocol = protocol ?? throw new ArgumentNullException(nameof(protocol));
+        }
+
+        public override async Task WriteMessageBeginAsync(TMessage message, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteMessageBeginAsync(message, cancellationToken);
+        }
+
+        public override async Task WriteMessageEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteMessageEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteStructBeginAsync(TStruct @struct, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteStructBeginAsync(@struct, cancellationToken);
+        }
+
+        public override async Task WriteStructEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteStructEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteFieldBeginAsync(TField field, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteFieldBeginAsync(field, cancellationToken);
+        }
+
+        public override async Task WriteFieldEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteFieldEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteFieldStopAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteFieldStopAsync(cancellationToken);
+        }
+
+        public override async Task WriteMapBeginAsync(TMap map, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteMapBeginAsync(map, cancellationToken);
+        }
+
+        public override async Task WriteMapEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteMapEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteListBeginAsync(TList list, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteListBeginAsync(list, cancellationToken);
+        }
+
+        public override async Task WriteListEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteListEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteSetBeginAsync(TSet set, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteSetBeginAsync(set, cancellationToken);
+        }
+
+        public override async Task WriteSetEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteSetEndAsync(cancellationToken);
+        }
+
+        public override async Task WriteBoolAsync(bool b, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteBoolAsync(b, cancellationToken);
+        }
+
+        public override async Task WriteByteAsync(sbyte b, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteByteAsync(b, cancellationToken);
+        }
+
+        public override async Task WriteI16Async(short i16, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteI16Async(i16, cancellationToken);
+        }
+
+        public override async Task WriteI32Async(int i32, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteI32Async(i32, cancellationToken);
+        }
+
+        public override async Task WriteI64Async(long i64, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteI64Async(i64, cancellationToken);
+        }
+
+        public override async Task WriteDoubleAsync(double d, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteDoubleAsync(d, cancellationToken);
+        }
+
+        public override async Task WriteStringAsync(string s, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteStringAsync(s, cancellationToken);
+        }
+
+        public override async Task WriteBinaryAsync(byte[] bytes, CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.WriteBinaryAsync(bytes, cancellationToken);
+        }
+
+        public override async Task<TMessage> ReadMessageBeginAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadMessageBeginAsync(cancellationToken);
+        }
+
+        public override async Task ReadMessageEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.ReadMessageEndAsync(cancellationToken);
+        }
+
+        public override async Task<TStruct> ReadStructBeginAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadStructBeginAsync(cancellationToken);
+        }
+
+        public override async Task ReadStructEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.ReadStructEndAsync(cancellationToken);
+        }
+
+        public override async Task<TField> ReadFieldBeginAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadFieldBeginAsync(cancellationToken);
+        }
+
+        public override async Task ReadFieldEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.ReadFieldEndAsync(cancellationToken);
+        }
+
+        public override async Task<TMap> ReadMapBeginAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadMapBeginAsync(cancellationToken);
+        }
+
+        public override async Task ReadMapEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.ReadMapEndAsync(cancellationToken);
+        }
+
+        public override async Task<TList> ReadListBeginAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadListBeginAsync(cancellationToken);
+        }
+
+        public override async Task ReadListEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.ReadListEndAsync(cancellationToken);
+        }
+
+        public override async Task<TSet> ReadSetBeginAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadSetBeginAsync(cancellationToken);
+        }
+
+        public override async Task ReadSetEndAsync(CancellationToken cancellationToken)
+        {
+            await _wrappedProtocol.ReadSetEndAsync(cancellationToken);
+        }
+
+        public override async Task<bool> ReadBoolAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadBoolAsync(cancellationToken);
+        }
+
+        public override async Task<sbyte> ReadByteAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadByteAsync(cancellationToken);
+        }
+
+        public override async Task<short> ReadI16Async(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadI16Async(cancellationToken);
+        }
+
+        public override async Task<int> ReadI32Async(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadI32Async(cancellationToken);
+        }
+
+        public override async Task<long> ReadI64Async(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadI64Async(cancellationToken);
+        }
+
+        public override async Task<double> ReadDoubleAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadDoubleAsync(cancellationToken);
+        }
+
+        public override async Task<string> ReadStringAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadStringAsync(cancellationToken);
+        }
+
+        public override async Task<byte[]> ReadBinaryAsync(CancellationToken cancellationToken)
+        {
+            return await _wrappedProtocol.ReadBinaryAsync(cancellationToken);
+        }
+    }
+}

lib/Thrift/Protocols/TProtocolException.cs

@@ -0,0 +1,59 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+// ReSharper disable InconsistentNaming
+namespace Thrift.Protocols
+{
+    public class TProtocolException : TException
+    {
+        // do not rename public constants - they used in generated files
+        public const int UNKNOWN = 0;
+        public const int INVALID_DATA = 1;
+        public const int NEGATIVE_SIZE = 2;
+        public const int SIZE_LIMIT = 3;
+        public const int BAD_VERSION = 4;
+        public const int NOT_IMPLEMENTED = 5;
+        public const int DEPTH_LIMIT = 6;
+
+        protected int Type = UNKNOWN;
+
+        public TProtocolException()
+        {
+        }
+
+        public TProtocolException(int type)
+        {
+            Type = type;
+        }
+
+        public TProtocolException(int type, string message)
+            : base(message)
+        {
+            Type = type;
+        }
+
+        public TProtocolException(string message)
+            : base(message)
+        {
+        }
+
+        public int GetExceptionType()
+        {
+            return Type;
+        }
+    }
+}

lib/Thrift/Protocols/Utilities/TBase64Helper.cs

@@ -0,0 +1,101 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+
+namespace Thrift.Protocols.Utilities
+{
+    // ReSharper disable once InconsistentNaming
+    internal static class TBase64Helper
+    {
+        //TODO: Constants
+        //TODO: Check for args
+        //TODO: Unitests
+
+        internal const string EncodeTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+        private static readonly int[] DecodeTable =
+        {
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
+            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
+            -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
+            -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+            41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+        };
+
+        internal static void Encode(byte[] src, int srcOff, int len, byte[] dst, int dstOff)
+        {
+            if (src == null)
+            {
+                throw new ArgumentNullException(nameof(src));
+            }
+
+            dst[dstOff] = (byte) EncodeTable[(src[srcOff] >> 2) & 0x3F];
+
+            if (len == 3)
+            {
+                dst[dstOff + 1] = (byte) EncodeTable[((src[srcOff] << 4) & 0x30) | ((src[srcOff + 1] >> 4) & 0x0F)];
+                dst[dstOff + 2] = (byte) EncodeTable[((src[srcOff + 1] << 2) & 0x3C) | ((src[srcOff + 2] >> 6) & 0x03)];
+                dst[dstOff + 3] = (byte) EncodeTable[src[srcOff + 2] & 0x3F];
+            }
+            else if (len == 2)
+            {
+                dst[dstOff + 1] = (byte) EncodeTable[((src[srcOff] << 4) & 0x30) | ((src[srcOff + 1] >> 4) & 0x0F)];
+                dst[dstOff + 2] = (byte) EncodeTable[(src[srcOff + 1] << 2) & 0x3C];
+            }
+            else
+            {
+                // len == 1
+                dst[dstOff + 1] = (byte) EncodeTable[(src[srcOff] << 4) & 0x30];
+            }
+        }
+
+        internal static void Decode(byte[] src, int srcOff, int len, byte[] dst, int dstOff)
+        {
+            if (src == null)
+            {
+                throw new ArgumentNullException(nameof(src));
+            }
+
+            dst[dstOff] = (byte) ((DecodeTable[src[srcOff] & 0x0FF] << 2) | (DecodeTable[src[srcOff + 1] & 0x0FF] >> 4));
+
+            if (len > 2)
+            {
+                dst[dstOff + 1] =
+                    (byte)
+                    (((DecodeTable[src[srcOff + 1] & 0x0FF] << 4) & 0xF0) | (DecodeTable[src[srcOff + 2] & 0x0FF] >> 2));
+                if (len > 3)
+                {
+                    dst[dstOff + 2] =
+                        (byte)
+                        (((DecodeTable[src[srcOff + 2] & 0x0FF] << 6) & 0xC0) | DecodeTable[src[srcOff + 3] & 0x0FF]);
+                }
+            }
+        }
+    }
+}

lib/Thrift/Protocols/Utilities/TBase64Utils.cs

@@ -0,0 +1,101 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+
+namespace Thrift.Protocols.Utilities
+{
+    // ReSharper disable once InconsistentNaming
+    internal static class TBase64Utils
+    {
+        //TODO: Constants
+        //TODO: Check for args
+        //TODO: Unitests
+
+        internal const string EncodeTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+        private static readonly int[] DecodeTable =
+        {
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
+            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
+            -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
+            -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+            41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+        };
+
+        internal static void Encode(byte[] src, int srcOff, int len, byte[] dst, int dstOff)
+        {
+            if (src == null)
+            {
+                throw new ArgumentNullException(nameof(src));
+            }
+
+            dst[dstOff] = (byte) EncodeTable[(src[srcOff] >> 2) & 0x3F];
+
+            if (len == 3)
+            {
+                dst[dstOff + 1] = (byte) EncodeTable[((src[srcOff] << 4) & 0x30) | ((src[srcOff + 1] >> 4) & 0x0F)];
+                dst[dstOff + 2] = (byte) EncodeTable[((src[srcOff + 1] << 2) & 0x3C) | ((src[srcOff + 2] >> 6) & 0x03)];
+                dst[dstOff + 3] = (byte) EncodeTable[src[srcOff + 2] & 0x3F];
+            }
+            else if (len == 2)
+            {
+                dst[dstOff + 1] = (byte) EncodeTable[((src[srcOff] << 4) & 0x30) | ((src[srcOff + 1] >> 4) & 0x0F)];
+                dst[dstOff + 2] = (byte) EncodeTable[(src[srcOff + 1] << 2) & 0x3C];
+            }
+            else
+            {
+                // len == 1
+                dst[dstOff + 1] = (byte) EncodeTable[(src[srcOff] << 4) & 0x30];
+            }
+        }
+
+        internal static void Decode(byte[] src, int srcOff, int len, byte[] dst, int dstOff)
+        {
+            if (src == null)
+            {
+                throw new ArgumentNullException(nameof(src));
+            }
+
+            dst[dstOff] = (byte) ((DecodeTable[src[srcOff] & 0x0FF] << 2) | (DecodeTable[src[srcOff + 1] & 0x0FF] >> 4));
+
+            if (len > 2)
+            {
+                dst[dstOff + 1] =
+                    (byte)
+                    (((DecodeTable[src[srcOff + 1] & 0x0FF] << 4) & 0xF0) | (DecodeTable[src[srcOff + 2] & 0x0FF] >> 2));
+                if (len > 3)
+                {
+                    dst[dstOff + 2] =
+                        (byte)
+                        (((DecodeTable[src[srcOff + 2] & 0x0FF] << 6) & 0xC0) | DecodeTable[src[srcOff + 3] & 0x0FF]);
+                }
+            }
+        }
+    }
+}

lib/Thrift/Protocols/Utilities/TJsonProtocolConstants.cs

@@ -0,0 +1,61 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Protocols.Utilities
+{
+    // ReSharper disable once InconsistentNaming
+    public static class TJSONProtocolConstants
+    {
+        //TODO Check for performance for reusing ImmutableArray from System.Collections.Immutable (https://blogs.msdn.microsoft.com/dotnet/2013/06/24/please-welcome-immutablearrayt/)
+        // can be possible to get better performance and also better GC
+
+        public static readonly byte[] Comma = {(byte) ','};
+        public static readonly byte[] Colon = {(byte) ':'};
+        public static readonly byte[] LeftBrace = {(byte) '{'};
+        public static readonly byte[] RightBrace = {(byte) '}'};
+        public static readonly byte[] LeftBracket = {(byte) '['};
+        public static readonly byte[] RightBracket = {(byte) ']'};
+        public static readonly byte[] Quote = {(byte) '"'};
+        public static readonly byte[] Backslash = {(byte) '\\'};
+
+        public static readonly byte[] JsonCharTable =
+        {
+            0, 0, 0, 0, 0, 0, 0, 0, (byte) 'b', (byte) 't', (byte) 'n', 0, (byte) 'f', (byte) 'r', 0, 0,
+            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+            1, 1, (byte) '"', 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
+        };
+
+        public static readonly char[] EscapeChars = "\"\\/bfnrt".ToCharArray();
+        public static readonly byte[] EscapeCharValues = {(byte) '"', (byte) '\\', (byte) '/', (byte) '\b', (byte) '\f', (byte) '\n', (byte) '\r', (byte) '\t'};
+        public static readonly byte[] EscSequences = {(byte) '\\', (byte) 'u', (byte) '0', (byte) '0'};
+
+        public static class TypeNames
+        {
+            public static readonly byte[] NameBool = { (byte)'t', (byte)'f' };
+            public static readonly byte[] NameByte = { (byte)'i', (byte)'8' };
+            public static readonly byte[] NameI16 = { (byte)'i', (byte)'1', (byte)'6' };
+            public static readonly byte[] NameI32 = { (byte)'i', (byte)'3', (byte)'2' };
+            public static readonly byte[] NameI64 = { (byte)'i', (byte)'6', (byte)'4' };
+            public static readonly byte[] NameDouble = { (byte)'d', (byte)'b', (byte)'l' };
+            public static readonly byte[] NameStruct = { (byte)'r', (byte)'e', (byte)'c' };
+            public static readonly byte[] NameString = { (byte)'s', (byte)'t', (byte)'r' };
+            public static readonly byte[] NameMap = { (byte)'m', (byte)'a', (byte)'p' };
+            public static readonly byte[] NameList = { (byte)'l', (byte)'s', (byte)'t' };
+            public static readonly byte[] NameSet = { (byte)'s', (byte)'e', (byte)'t' };
+        }
+    }
+}

lib/Thrift/Protocols/Utilities/TJsonProtocolHelper.cs

@@ -0,0 +1,176 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using Thrift.Protocols.Entities;
+
+namespace Thrift.Protocols.Utilities
+{
+    // ReSharper disable once InconsistentNaming
+    public static class TJSONProtocolHelper
+    {
+        public static byte[] GetTypeNameForTypeId(TType typeId)
+        {
+            switch (typeId)
+            {
+                case TType.Bool:
+                    return TJSONProtocolConstants.TypeNames.NameBool;
+                case TType.Byte:
+                    return TJSONProtocolConstants.TypeNames.NameByte;
+                case TType.I16:
+                    return TJSONProtocolConstants.TypeNames.NameI16;
+                case TType.I32:
+                    return TJSONProtocolConstants.TypeNames.NameI32;
+                case TType.I64:
+                    return TJSONProtocolConstants.TypeNames.NameI64;
+                case TType.Double:
+                    return TJSONProtocolConstants.TypeNames.NameDouble;
+                case TType.String:
+                    return TJSONProtocolConstants.TypeNames.NameString;
+                case TType.Struct:
+                    return TJSONProtocolConstants.TypeNames.NameStruct;
+                case TType.Map:
+                    return TJSONProtocolConstants.TypeNames.NameMap;
+                case TType.Set:
+                    return TJSONProtocolConstants.TypeNames.NameSet;
+                case TType.List:
+                    return TJSONProtocolConstants.TypeNames.NameList;
+                default:
+                    throw new TProtocolException(TProtocolException.NOT_IMPLEMENTED, "Unrecognized exType");
+            }
+        }
+
+        public static TType GetTypeIdForTypeName(byte[] name)
+        {
+            var result = TType.Stop;
+            if (name.Length > 1)
+            {
+                switch (name[0])
+                {
+                    case (byte) 'd':
+                        result = TType.Double;
+                        break;
+                    case (byte) 'i':
+                        switch (name[1])
+                        {
+                            case (byte) '8':
+                                result = TType.Byte;
+                                break;
+                            case (byte) '1':
+                                result = TType.I16;
+                                break;
+                            case (byte) '3':
+                                result = TType.I32;
+                                break;
+                            case (byte) '6':
+                                result = TType.I64;
+                                break;
+                        }
+                        break;
+                    case (byte) 'l':
+                        result = TType.List;
+                        break;
+                    case (byte) 'm':
+                        result = TType.Map;
+                        break;
+                    case (byte) 'r':
+                        result = TType.Struct;
+                        break;
+                    case (byte) 's':
+                        if (name[1] == (byte) 't')
+                        {
+                            result = TType.String;
+                        }
+                        else if (name[1] == (byte) 'e')
+                        {
+                            result = TType.Set;
+                        }
+                        break;
+                    case (byte) 't':
+                        result = TType.Bool;
+                        break;
+                }
+            }
+            if (result == TType.Stop)
+            {
+                throw new TProtocolException(TProtocolException.NOT_IMPLEMENTED, "Unrecognized exType");
+            }
+            return result;
+        }
+
+        /// <summary>
+        ///     Return true if the given byte could be a valid part of a JSON number.
+        /// </summary>
+        public static bool IsJsonNumeric(byte b)
+        {
+            switch (b)
+            {
+                case (byte)'+':
+                case (byte)'-':
+                case (byte)'.':
+                case (byte)'0':
+                case (byte)'1':
+                case (byte)'2':
+                case (byte)'3':
+                case (byte)'4':
+                case (byte)'5':
+                case (byte)'6':
+                case (byte)'7':
+                case (byte)'8':
+                case (byte)'9':
+                case (byte)'E':
+                case (byte)'e':
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        /// <summary>
+        ///     Convert a byte containing a hex char ('0'-'9' or 'a'-'f') into its
+        ///     corresponding hex value
+        /// </summary>
+        public static byte ToHexVal(byte ch)
+        {
+            if (ch >= '0' && ch <= '9')
+            {
+                return (byte)((char)ch - '0');
+            }
+
+            if (ch >= 'a' && ch <= 'f')
+            {
+                ch += 10;
+                return (byte)((char)ch - 'a');
+            }
+
+            throw new TProtocolException(TProtocolException.INVALID_DATA, "Expected hex character");
+        }
+
+        /// <summary>
+        ///     Convert a byte containing a hex value to its corresponding hex character
+        /// </summary>
+        public static byte ToHexChar(byte val)
+        {
+            val &= 0x0F;
+            if (val < 10)
+            {
+                return (byte)((char)val + '0');
+            }
+            val -= 10;
+            return (byte)((char)val + 'a');
+        }
+    }
+}

lib/Thrift/Protocols/Utilities/TProtocolUtil.cs

@@ -0,0 +1,110 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols.Entities;
+
+namespace Thrift.Protocols.Utilities
+{
+    // ReSharper disable once InconsistentNaming
+    public static class TProtocolUtil
+    {
+        public static async Task SkipAsync(TProtocol protocol, TType type, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            protocol.IncrementRecursionDepth();
+            try
+            {
+                switch (type)
+                {
+                    case TType.Bool:
+                        await protocol.ReadBoolAsync(cancellationToken);
+                        break;
+                    case TType.Byte:
+                        await protocol.ReadByteAsync(cancellationToken);
+                        break;
+                    case TType.I16:
+                        await protocol.ReadI16Async(cancellationToken);
+                        break;
+                    case TType.I32:
+                        await protocol.ReadI32Async(cancellationToken);
+                        break;
+                    case TType.I64:
+                        await protocol.ReadI64Async(cancellationToken);
+                        break;
+                    case TType.Double:
+                        await protocol.ReadDoubleAsync(cancellationToken);
+                        break;
+                    case TType.String:
+                        // Don't try to decode the string, just skip it.
+                        await protocol.ReadBinaryAsync(cancellationToken);
+                        break;
+                    case TType.Struct:
+                        await protocol.ReadStructBeginAsync(cancellationToken);
+                        while (true)
+                        {
+                            var field = await protocol.ReadFieldBeginAsync(cancellationToken);
+                            if (field.Type == TType.Stop)
+                            {
+                                break;
+                            }
+                            await SkipAsync(protocol, field.Type, cancellationToken);
+                            await protocol.ReadFieldEndAsync(cancellationToken);
+                        }
+                        await protocol.ReadStructEndAsync(cancellationToken);
+                        break;
+                    case TType.Map:
+                        var map = await protocol.ReadMapBeginAsync(cancellationToken);
+                        for (var i = 0; i < map.Count; i++)
+                        {
+                            await SkipAsync(protocol, map.KeyType, cancellationToken);
+                            await SkipAsync(protocol, map.ValueType, cancellationToken);
+                        }
+                        await protocol.ReadMapEndAsync(cancellationToken);
+                        break;
+                    case TType.Set:
+                        var set = await protocol.ReadSetBeginAsync(cancellationToken);
+                        for (var i = 0; i < set.Count; i++)
+                        {
+                            await SkipAsync(protocol, set.ElementType, cancellationToken);
+                        }
+                        await protocol.ReadSetEndAsync(cancellationToken);
+                        break;
+                    case TType.List:
+                        var list = await protocol.ReadListBeginAsync(cancellationToken);
+                        for (var i = 0; i < list.Count; i++)
+                        {
+                            await SkipAsync(protocol, list.ElementType, cancellationToken);
+                        }
+                        await protocol.ReadListEndAsync(cancellationToken);
+                        break;
+                    default:
+                        throw new TProtocolException(TProtocolException.INVALID_DATA, "Unknown data type " + type.ToString("d"));
+                }
+            }
+            finally
+            {
+                protocol.DecrementRecursionDepth();
+            }
+        }
+    }
+}

lib/Thrift/Server/TBaseServer.cs

@@ -0,0 +1,75 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols;
+using Thrift.Transports;
+
+namespace Thrift.Server
+{
+    // ReSharper disable once InconsistentNaming
+    public abstract class TBaseServer
+    {
+        protected ITProtocolFactory InputProtocolFactory;
+        protected TTransportFactory InputTransportFactory;
+        protected ITProcessorFactory ItProcessorFactory;
+        protected ITProtocolFactory OutputProtocolFactory;
+        protected TTransportFactory OutputTransportFactory;
+
+        protected TServerEventHandler ServerEventHandler;
+        protected TServerTransport ServerTransport;
+
+        protected TBaseServer(ITProcessorFactory itProcessorFactory, TServerTransport serverTransport,
+            TTransportFactory inputTransportFactory, TTransportFactory outputTransportFactory,
+            ITProtocolFactory inputProtocolFactory, ITProtocolFactory outputProtocolFactory)
+        {
+            ItProcessorFactory = itProcessorFactory ?? throw new ArgumentNullException(nameof(itProcessorFactory));
+            ServerTransport = serverTransport;
+            InputTransportFactory = inputTransportFactory ?? throw new ArgumentNullException(nameof(inputTransportFactory));
+            OutputTransportFactory = outputTransportFactory ?? throw new ArgumentNullException(nameof(outputTransportFactory));
+            InputProtocolFactory = inputProtocolFactory ?? throw new ArgumentNullException(nameof(inputProtocolFactory));
+            OutputProtocolFactory = outputProtocolFactory ?? throw new ArgumentNullException(nameof(outputProtocolFactory));
+        }
+
+        public void SetEventHandler(TServerEventHandler seh)
+        {
+            ServerEventHandler = seh;
+        }
+
+        public TServerEventHandler GetEventHandler()
+        {
+            return ServerEventHandler;
+        }
+
+        public abstract void Stop();
+
+        public virtual void Start()
+        {
+            // do nothing
+        }
+
+        public virtual async Task ServeAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+    }
+}

lib/Thrift/Server/TServerEventHandler.cs

@@ -0,0 +1,54 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols;
+using Thrift.Transports;
+
+namespace Thrift.Server
+{
+    //TODO: replacement by event?
+
+    /// <summary>
+    ///     Interface implemented by server users to handle events from the server
+    /// </summary>
+    // ReSharper disable once InconsistentNaming
+    public interface TServerEventHandler
+    {
+        /// <summary>
+        ///     Called before the server begins */
+        /// </summary>
+        Task PreServeAsync(CancellationToken cancellationToken);
+
+        /// <summary>
+        ///     Called when a new client has connected and is about to being processing */
+        /// </summary>
+        Task<object> CreateContextAsync(TProtocol input, TProtocol output, CancellationToken cancellationToken);
+
+        /// <summary>
+        ///     Called when a client has finished request-handling to delete server context */
+        /// </summary>
+        Task DeleteContextAsync(object serverContext, TProtocol input, TProtocol output,
+            CancellationToken cancellationToken);
+
+        /// <summary>
+        ///     Called when a client is about to call the processor */
+        /// </summary>
+        Task ProcessContextAsync(object serverContext, TClientTransport transport, CancellationToken cancellationToken);
+    }
+}

lib/Thrift/Settings.Stylecop

@@ -0,0 +1,5 @@
+<StyleCopSettings Version="4.3" >
+  <GlobalSettings>
+    <BooleanProperty Name="RulesEnabledByDefault">False</BooleanProperty>
+  </GlobalSettings>
+</StyleCopSettings>

lib/Thrift/SingletonTProcessorFactory.cs

@@ -0,0 +1,38 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using Thrift.Server;
+using Thrift.Transports;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    public class SingletonTProcessorFactory : ITProcessorFactory
+    {
+        private readonly ITAsyncProcessor _tAsyncProcessor;
+
+        public SingletonTProcessorFactory(ITAsyncProcessor tAsyncProcessor)
+        {
+            _tAsyncProcessor = tAsyncProcessor;
+        }
+
+        public ITAsyncProcessor GetAsyncProcessor(TClientTransport trans, TBaseServer baseServer = null)
+        {
+            return _tAsyncProcessor;
+        }
+    }
+}

lib/Thrift/TApplicationException.cs

@@ -0,0 +1,150 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols;
+using Thrift.Protocols.Entities;
+using Thrift.Protocols.Utilities;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    public class TApplicationException : TException
+    {
+        public enum ExceptionType
+        {
+            Unknown,
+            UnknownMethod,
+            InvalidMessageType,
+            WrongMethodName,
+            BadSequenceId,
+            MissingResult,
+            InternalError,
+            ProtocolError,
+            InvalidTransform,
+            InvalidProtocol,
+            UnsupportedClientType
+        }
+
+        private const int MessageTypeFieldId = 1;
+        private const int ExTypeFieldId = 2;
+
+        protected ExceptionType Type;
+
+        public TApplicationException()
+        {
+        }
+
+        public TApplicationException(ExceptionType type)
+        {
+            Type = type;
+        }
+
+        public TApplicationException(ExceptionType type, string message)
+            : base(message)
+        {
+            Type = type;
+        }
+
+        public static async Task<TApplicationException> ReadAsync(TProtocol inputProtocol, CancellationToken cancellationToken)
+        {
+            string message = null;
+            var type = ExceptionType.Unknown;
+
+            await inputProtocol.ReadStructBeginAsync(cancellationToken);
+            while (true)
+            {
+                var field = await inputProtocol.ReadFieldBeginAsync(cancellationToken);
+                if (field.Type == TType.Stop)
+                {
+                    break;
+                }
+
+                switch (field.ID)
+                {
+                    case MessageTypeFieldId:
+                        if (field.Type == TType.String)
+                        {
+                            message = await inputProtocol.ReadStringAsync(cancellationToken);
+                        }
+                        else
+                        {
+                            await TProtocolUtil.SkipAsync(inputProtocol, field.Type, cancellationToken);
+                        }
+                        break;
+                    case ExTypeFieldId:
+                        if (field.Type == TType.I32)
+                        {
+                            type = (ExceptionType) await inputProtocol.ReadI32Async(cancellationToken);
+                        }
+                        else
+                        {
+                            await TProtocolUtil.SkipAsync(inputProtocol, field.Type, cancellationToken);
+                        }
+                        break;
+                    default:
+                        await TProtocolUtil.SkipAsync(inputProtocol, field.Type, cancellationToken);
+                        break;
+                }
+
+                await inputProtocol.ReadFieldEndAsync(cancellationToken);
+            }
+
+            await inputProtocol.ReadStructEndAsync(cancellationToken);
+
+            return new TApplicationException(type, message);
+        }
+
+        public async Task WriteAsync(TProtocol outputProtocol, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            const string messageTypeFieldName = "message";
+            const string exTypeFieldName = "exType";
+            const string structApplicationExceptionName = "TApplicationException";
+
+            var struc = new TStruct(structApplicationExceptionName);
+            var field = new TField();
+
+            await outputProtocol.WriteStructBeginAsync(struc, cancellationToken);
+
+            if (!string.IsNullOrEmpty(Message))
+            {
+                field.Name = messageTypeFieldName;
+                field.Type = TType.String;
+                field.ID = MessageTypeFieldId;
+                await outputProtocol.WriteFieldBeginAsync(field, cancellationToken);
+                await outputProtocol.WriteStringAsync(Message, cancellationToken);
+                await outputProtocol.WriteFieldEndAsync(cancellationToken);
+            }
+
+            field.Name = exTypeFieldName;
+            field.Type = TType.I32;
+            field.ID = ExTypeFieldId;
+
+            await outputProtocol.WriteFieldBeginAsync(field, cancellationToken);
+            await outputProtocol.WriteI32Async((int) Type, cancellationToken);
+            await outputProtocol.WriteFieldEndAsync(cancellationToken);
+            await outputProtocol.WriteFieldStopAsync(cancellationToken);
+            await outputProtocol.WriteStructEndAsync(cancellationToken);
+        }
+    }
+}

lib/Thrift/TBaseClient.cs

@@ -0,0 +1,91 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    /// <summary>
+    ///     TBaseClient.
+    ///     Base client for generated clients.
+    ///     Do not change this class without checking generated code (namings, etc.)
+    /// </summary>
+    public abstract class TBaseClient
+    {
+        private readonly TProtocol _inputProtocol;
+        private readonly TProtocol _outputProtocol;
+        private bool _isDisposed;
+        private int _seqId;
+        public readonly Guid ClientId = Guid.NewGuid();
+
+        protected TBaseClient(TProtocol inputProtocol, TProtocol outputProtocol)
+        {
+            _inputProtocol = inputProtocol ?? throw new ArgumentNullException(nameof(inputProtocol));
+            _outputProtocol = outputProtocol ?? throw new ArgumentNullException(nameof(outputProtocol));
+        }
+
+        public TProtocol InputProtocol => _inputProtocol;
+
+        public TProtocol OutputProtocol => _outputProtocol;
+
+        public int SeqId
+        {
+            get { return ++_seqId; }
+        }
+
+        public virtual async Task OpenTransportAsync()
+        {
+            await OpenTransportAsync(CancellationToken.None);
+        }
+
+        public virtual async Task OpenTransportAsync(CancellationToken cancellationToken)
+        {
+            if (!_inputProtocol.Transport.IsOpen)
+            {
+                await _inputProtocol.Transport.OpenAsync(cancellationToken);
+            }
+
+            if (!_inputProtocol.Transport.IsOpen)
+            {
+                await _outputProtocol.Transport.OpenAsync(cancellationToken);
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    _inputProtocol?.Dispose();
+                    _outputProtocol?.Dispose();
+                }
+            }
+
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/TException.cs

@@ -0,0 +1,34 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    public class TException : Exception
+    {
+        public TException()
+        {
+        }
+
+        public TException(string message)
+            : base(message)
+        {
+        }
+    }
+}

lib/Thrift/TMultiplexedProcessor.cs

@@ -0,0 +1,143 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocols;
+using Thrift.Protocols.Entities;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    public class TMultiplexedProcessor : ITAsyncProcessor
+    {
+        //TODO: Localization
+
+        private readonly Dictionary<string, ITAsyncProcessor> _serviceProcessorMap =
+            new Dictionary<string, ITAsyncProcessor>();
+
+        public async Task<bool> ProcessAsync(TProtocol iprot, TProtocol oprot)
+        {
+            return await ProcessAsync(iprot, oprot, CancellationToken.None);
+        }
+
+        public async Task<bool> ProcessAsync(TProtocol iprot, TProtocol oprot, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<bool>(cancellationToken);
+            }
+
+            try
+            {
+                var message = await iprot.ReadMessageBeginAsync(cancellationToken);
+
+                if ((message.Type != TMessageType.Call) && (message.Type != TMessageType.Oneway))
+                {
+                    await FailAsync(oprot, message, TApplicationException.ExceptionType.InvalidMessageType,
+                        "Message exType CALL or ONEWAY expected", cancellationToken);
+                    return false;
+                }
+
+                // Extract the service name
+                var index = message.Name.IndexOf(TMultiplexedProtocol.Separator, StringComparison.Ordinal);
+                if (index < 0)
+                {
+                    await FailAsync(oprot, message, TApplicationException.ExceptionType.InvalidProtocol,
+                        $"Service name not found in message name: {message.Name}. Did you forget to use a TMultiplexProtocol in your client?",
+                        cancellationToken);
+                    return false;
+                }
+
+                // Create a new TMessage, something that can be consumed by any TProtocol
+                var serviceName = message.Name.Substring(0, index);
+                ITAsyncProcessor actualProcessor;
+                if (!_serviceProcessorMap.TryGetValue(serviceName, out actualProcessor))
+                {
+                    await FailAsync(oprot, message, TApplicationException.ExceptionType.InternalError,
+                        $"Service name not found: {serviceName}. Did you forget to call RegisterProcessor()?",
+                        cancellationToken);
+                    return false;
+                }
+
+                // Create a new TMessage, removing the service name
+                var newMessage = new TMessage(
+                    message.Name.Substring(serviceName.Length + TMultiplexedProtocol.Separator.Length),
+                    message.Type,
+                    message.SeqID);
+
+                // Dispatch processing to the stored processor
+                return
+                    await
+                        actualProcessor.ProcessAsync(new StoredMessageProtocol(iprot, newMessage), oprot,
+                            cancellationToken);
+            }
+            catch (IOException)
+            {
+                return false; // similar to all other processors
+            }
+        }
+
+        public void RegisterProcessor(string serviceName, ITAsyncProcessor processor)
+        {
+            if (_serviceProcessorMap.ContainsKey(serviceName))
+            {
+                throw new InvalidOperationException(
+                    $"Processor map already contains processor with name: '{serviceName}'");
+            }
+
+            _serviceProcessorMap.Add(serviceName, processor);
+        }
+
+        private async Task FailAsync(TProtocol oprot, TMessage message, TApplicationException.ExceptionType extype,
+            string etxt, CancellationToken cancellationToken)
+        {
+            var appex = new TApplicationException(extype, etxt);
+
+            var newMessage = new TMessage(message.Name, TMessageType.Exception, message.SeqID);
+
+            await oprot.WriteMessageBeginAsync(newMessage, cancellationToken);
+            await appex.WriteAsync(oprot, cancellationToken);
+            await oprot.WriteMessageEndAsync(cancellationToken);
+            await oprot.Transport.FlushAsync(cancellationToken);
+        }
+
+        private class StoredMessageProtocol : TProtocolDecorator
+        {
+            readonly TMessage _msgBegin;
+
+            public StoredMessageProtocol(TProtocol protocol, TMessage messageBegin)
+                : base(protocol)
+            {
+                _msgBegin = messageBegin;
+            }
+
+            public override async Task<TMessage> ReadMessageBeginAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return await Task.FromCanceled<TMessage>(cancellationToken);
+                }
+
+                return _msgBegin;
+            }
+        }
+    }
+}

lib/Thrift/Thrift.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net46;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks Condition="$(OS) != 'Windows_NT'">netstandard2.0</TargetFrameworks>
+  </PropertyGroup>
+
+  <ItemGroup Condition="$(OS) == 'Windows_NT'">
+    <PackageReference Include="System.Net.Http" Version="4.3.4" />
+  </ItemGroup>
+
+</Project>

lib/Thrift/Transports/Client/TBufferedClientTransport.cs

@@ -0,0 +1,206 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    // ReSharper disable once InconsistentNaming
+    public class TBufferedClientTransport : TClientTransport
+    {
+        private readonly int _bufSize;
+        private readonly MemoryStream _inputBuffer = new MemoryStream(0);
+        private readonly MemoryStream _outputBuffer = new MemoryStream(0);
+        private readonly TClientTransport _transport;
+        private bool _isDisposed;
+
+        //TODO: should support only specified input transport?
+        public TBufferedClientTransport(TClientTransport transport, int bufSize = 1024)
+        {
+            if (bufSize <= 0)
+            {
+                throw new ArgumentOutOfRangeException(nameof(bufSize), "Buffer size must be a positive number.");
+            }
+
+            _transport = transport ?? throw new ArgumentNullException(nameof(transport));
+            _bufSize = bufSize;
+        }
+
+        public TClientTransport UnderlyingTransport
+        {
+            get
+            {
+                CheckNotDisposed();
+
+                return _transport;
+            }
+        }
+
+        public override bool IsOpen => !_isDisposed && _transport.IsOpen;
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            await _transport.OpenAsync(cancellationToken);
+        }
+
+        public override void Close()
+        {
+            CheckNotDisposed();
+
+            _transport.Close();
+        }
+
+        public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            //TODO: investigate how it should work correctly
+            CheckNotDisposed();
+
+            ValidateBufferArgs(buffer, offset, length);
+
+            if (!IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            if (_inputBuffer.Capacity < _bufSize)
+            {
+                _inputBuffer.Capacity = _bufSize;
+            }
+
+            var got = await _inputBuffer.ReadAsync(buffer, offset, length, cancellationToken);
+            if (got > 0)
+            {
+                return got;
+            }
+
+            _inputBuffer.Seek(0, SeekOrigin.Begin);
+            _inputBuffer.SetLength(_inputBuffer.Capacity);
+
+            ArraySegment<byte> bufSegment;
+            _inputBuffer.TryGetBuffer(out bufSegment);
+
+            // investigate
+            var filled = await _transport.ReadAsync(bufSegment.Array, 0, (int) _inputBuffer.Length, cancellationToken);
+            _inputBuffer.SetLength(filled);
+
+            if (filled == 0)
+            {
+                return 0;
+            }
+
+            return await ReadAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            ValidateBufferArgs(buffer, offset, length);
+
+            if (!IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            // Relative offset from "off" argument
+            var writtenCount = 0;
+            if (_outputBuffer.Length > 0)
+            {
+                var capa = (int) (_outputBuffer.Capacity - _outputBuffer.Length);
+                var writeSize = capa <= length ? capa : length;
+                await _outputBuffer.WriteAsync(buffer, offset, writeSize, cancellationToken);
+
+                writtenCount += writeSize;
+                if (writeSize == capa)
+                {
+                    //ArraySegment<byte> bufSegment;
+                    //_outputBuffer.TryGetBuffer(out bufSegment);
+                    var data = _outputBuffer.ToArray();
+                    //await _transport.WriteAsync(bufSegment.Array, cancellationToken);
+                    await _transport.WriteAsync(data, cancellationToken);
+                    _outputBuffer.SetLength(0);
+                }
+            }
+
+            while (length - writtenCount >= _bufSize)
+            {
+                await _transport.WriteAsync(buffer, offset + writtenCount, _bufSize, cancellationToken);
+                writtenCount += _bufSize;
+            }
+
+            var remain = length - writtenCount;
+            if (remain > 0)
+            {
+                if (_outputBuffer.Capacity < _bufSize)
+                {
+                    _outputBuffer.Capacity = _bufSize;
+                }
+                await _outputBuffer.WriteAsync(buffer, offset + writtenCount, remain, cancellationToken);
+            }
+        }
+
+        public override async Task FlushAsync(CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            if (!IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            if (_outputBuffer.Length > 0)
+            {
+                //ArraySegment<byte> bufSegment;
+                var data = _outputBuffer.ToArray(); // TryGetBuffer(out bufSegment);
+
+                await _transport.WriteAsync(data /*bufSegment.Array*/, cancellationToken);
+                _outputBuffer.SetLength(0);
+            }
+
+            await _transport.FlushAsync(cancellationToken);
+        }
+
+        private void CheckNotDisposed()
+        {
+            if (_isDisposed)
+            {
+                throw new ObjectDisposedException(nameof(_transport));
+            }
+        }
+
+        // IDisposable
+        protected override void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    _inputBuffer?.Dispose();
+                    _outputBuffer?.Dispose();
+                    _transport?.Dispose();
+                }
+            }
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/Transports/Client/TFramedClientTransport.cs

@@ -0,0 +1,201 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    //TODO: check for correct implementation 
+
+    // ReSharper disable once InconsistentNaming
+    public class TFramedClientTransport : TClientTransport
+    {
+        private const int HeaderSize = 4;
+        private readonly byte[] _headerBuf = new byte[HeaderSize];
+        private readonly MemoryStream _readBuffer = new MemoryStream(1024);
+        private readonly TClientTransport _transport;
+        private readonly MemoryStream _writeBuffer = new MemoryStream(1024);
+
+        private bool _isDisposed;
+
+        public TFramedClientTransport(TClientTransport transport)
+        {
+            _transport = transport ?? throw new ArgumentNullException(nameof(transport));
+
+            InitWriteBuffer();
+        }
+
+        public override bool IsOpen => !_isDisposed && _transport.IsOpen;
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            await _transport.OpenAsync(cancellationToken);
+        }
+
+        public override void Close()
+        {
+            CheckNotDisposed();
+
+            _transport.Close();
+        }
+
+        public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            ValidateBufferArgs(buffer, offset, length);
+
+            if (!IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            var got = await _readBuffer.ReadAsync(buffer, offset, length, cancellationToken);
+            if (got > 0)
+            {
+                return got;
+            }
+
+            // Read another frame of data
+            await ReadFrameAsync(cancellationToken);
+
+            return await _readBuffer.ReadAsync(buffer, offset, length, cancellationToken);
+        }
+
+        private async Task ReadFrameAsync(CancellationToken cancellationToken)
+        {
+            await _transport.ReadAllAsync(_headerBuf, 0, HeaderSize, cancellationToken);
+
+            var size = DecodeFrameSize(_headerBuf);
+
+            _readBuffer.SetLength(size);
+            _readBuffer.Seek(0, SeekOrigin.Begin);
+
+            ArraySegment<byte> bufSegment;
+            _readBuffer.TryGetBuffer(out bufSegment);
+
+            var buff = bufSegment.Array;
+
+            await _transport.ReadAllAsync(buff, 0, size, cancellationToken);
+        }
+
+        public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            ValidateBufferArgs(buffer, offset, length);
+
+            if (!IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            if (_writeBuffer.Length + length > int.MaxValue)
+            {
+                await FlushAsync(cancellationToken);
+            }
+
+            await _writeBuffer.WriteAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task FlushAsync(CancellationToken cancellationToken)
+        {
+            CheckNotDisposed();
+
+            if (!IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            //ArraySegment<byte> bufSegment;
+            //_writeBuffer.TryGetBuffer(out bufSegment);
+            //var buf = bufSegment.Array;
+            var buf = _writeBuffer.ToArray();
+
+            //var len = (int)_writeBuffer.Length;
+            var dataLen = (int) _writeBuffer.Length - HeaderSize;
+            if (dataLen < 0)
+            {
+                throw new InvalidOperationException(); // logic error actually
+            }
+
+            // Inject message header into the reserved buffer space
+            EncodeFrameSize(dataLen, buf);
+
+            // Send the entire message at once
+            await _transport.WriteAsync(buf, cancellationToken);
+
+            InitWriteBuffer();
+
+            await _transport.FlushAsync(cancellationToken);
+        }
+
+        private void InitWriteBuffer()
+        {
+            // Reserve space for message header to be put right before sending it out
+            _writeBuffer.SetLength(HeaderSize);
+            _writeBuffer.Seek(0, SeekOrigin.End);
+        }
+
+        private static void EncodeFrameSize(int frameSize, byte[] buf)
+        {
+            buf[0] = (byte) (0xff & (frameSize >> 24));
+            buf[1] = (byte) (0xff & (frameSize >> 16));
+            buf[2] = (byte) (0xff & (frameSize >> 8));
+            buf[3] = (byte) (0xff & (frameSize));
+        }
+
+        private static int DecodeFrameSize(byte[] buf)
+        {
+            return
+                ((buf[0] & 0xff) << 24) |
+                ((buf[1] & 0xff) << 16) |
+                ((buf[2] & 0xff) << 8) |
+                (buf[3] & 0xff);
+        }
+
+
+        private void CheckNotDisposed()
+        {
+            if (_isDisposed)
+            {
+                throw new ObjectDisposedException("TFramedClientTransport");
+            }
+        }
+
+        // IDisposable
+        protected override void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    _readBuffer?.Dispose();
+                    _writeBuffer?.Dispose();
+                    _transport?.Dispose();
+                }
+            }
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/Transports/Client/THttpClientTransport.cs

@@ -0,0 +1,231 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Security.Cryptography.X509Certificates;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    // ReSharper disable once InconsistentNaming
+    public class THttpClientTransport : TClientTransport
+    {
+        private readonly X509Certificate[] _certificates;
+        private readonly Uri _uri;
+
+        // Timeouts in milliseconds
+        private int _connectTimeout = 30000;
+        private HttpClient _httpClient;
+        private Stream _inputStream;
+
+        private bool _isDisposed;
+        private MemoryStream _outputStream = new MemoryStream();
+        private static readonly MediaTypeWithQualityHeaderValue ApacheThriftMediaType = new MediaTypeWithQualityHeaderValue("application/vnd.apache.thrift.binary");
+
+        public THttpClientTransport(Uri u, IDictionary<string, string> customHeaders)
+            : this(u, Enumerable.Empty<X509Certificate>(), customHeaders)
+        {
+        }
+
+        public THttpClientTransport(Uri u, IEnumerable<X509Certificate> certificates,
+            IDictionary<string, string> customHeaders)
+        {
+            _uri = u;
+            _certificates = (certificates ?? Enumerable.Empty<X509Certificate>()).ToArray();
+            CustomHeaders = customHeaders;
+
+            // due to current bug with performance of Dispose in netcore https://github.com/dotnet/corefx/issues/8809
+            // this can be switched to default way (create client->use->dispose per flush) later
+            _httpClient = CreateClient();
+        }
+
+        public IDictionary<string, string> CustomHeaders { get; }
+
+        public int ConnectTimeout
+        {
+            set { _connectTimeout = value; }
+        }
+
+        public override bool IsOpen => true;
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override void Close()
+        {
+            if (_inputStream != null)
+            {
+                _inputStream.Dispose();
+                _inputStream = null;
+            }
+
+            if (_outputStream != null)
+            {
+                _outputStream.Dispose();
+                _outputStream = null;
+            }
+
+            if (_httpClient != null)
+            {
+                _httpClient.Dispose();
+                _httpClient = null;
+            }
+        }
+
+        public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<int>(cancellationToken);
+            }
+
+            if (_inputStream == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "No request has been sent");
+            }
+
+            try
+            {
+                var ret = await _inputStream.ReadAsync(buffer, offset, length, cancellationToken);
+
+                if (ret == -1)
+                {
+                    throw new TTransportException(TTransportException.ExceptionType.EndOfFile, "No more data available");
+                }
+
+                return ret;
+            }
+            catch (IOException iox)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.Unknown, iox.ToString());
+            }
+        }
+
+        public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            await _outputStream.WriteAsync(buffer, offset, length, cancellationToken);
+        }
+
+        private HttpClient CreateClient()
+        {
+            var handler = new HttpClientHandler();
+            if (_certificates.Length > 0)
+            {
+                handler.ClientCertificates.AddRange(_certificates);
+            }
+
+            var httpClient = new HttpClient(handler);
+
+            if (_connectTimeout > 0)
+            {
+                httpClient.Timeout = TimeSpan.FromSeconds(_connectTimeout);
+            }
+
+            httpClient.DefaultRequestHeaders.Accept.Add(ApacheThriftMediaType);
+            httpClient.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("THttpClientTransport", "1.0.0"));
+
+            if (CustomHeaders != null)
+            {
+                foreach (var item in CustomHeaders)
+                {
+                    httpClient.DefaultRequestHeaders.Add(item.Key, item.Value);
+                }
+            }
+
+            return httpClient;
+        }
+
+        public override async Task FlushAsync(CancellationToken cancellationToken)
+        {
+            try
+            {
+                try
+                {
+                    if (_outputStream.CanSeek)
+                    {
+                        _outputStream.Seek(0, SeekOrigin.Begin);
+                    }
+
+                    using (var outStream = new StreamContent(_outputStream))
+                    {
+                        outStream.Headers.ContentType = ApacheThriftMediaType;
+                        var msg = await _httpClient.PostAsync(_uri, outStream, cancellationToken);
+
+                        msg.EnsureSuccessStatusCode();
+
+                        if (_inputStream != null)
+                        {
+                            _inputStream.Dispose();
+                            _inputStream = null;
+                        }
+
+                        _inputStream = await msg.Content.ReadAsStreamAsync();
+                        if (_inputStream.CanSeek)
+                        {
+                            _inputStream.Seek(0, SeekOrigin.Begin);
+                        }
+                    }
+                }
+                catch (IOException iox)
+                {
+                    throw new TTransportException(TTransportException.ExceptionType.Unknown, iox.ToString());
+                }
+                catch (HttpRequestException wx)
+                {
+                    throw new TTransportException(TTransportException.ExceptionType.Unknown,
+                        "Couldn't connect to server: " + wx);
+                }
+            }
+            finally
+            {
+                _outputStream = new MemoryStream();
+            }
+        }
+
+        // IDisposable
+        protected override void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    _inputStream?.Dispose();
+                    _outputStream?.Dispose();
+                    _httpClient?.Dispose();
+                }
+            }
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/Transports/Client/TMemoryBufferClientTransport.cs

@@ -0,0 +1,97 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    // ReSharper disable once InconsistentNaming
+    public class TMemoryBufferClientTransport : TClientTransport
+    {
+        private readonly MemoryStream _byteStream;
+        private bool _isDisposed;
+
+        public TMemoryBufferClientTransport()
+        {
+            _byteStream = new MemoryStream();
+        }
+
+        public TMemoryBufferClientTransport(byte[] buf)
+        {
+            _byteStream = new MemoryStream(buf);
+        }
+
+        public override bool IsOpen => true;
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override void Close()
+        {
+            /** do nothing **/
+        }
+
+        public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            return await _byteStream.ReadAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task WriteAsync(byte[] buffer, CancellationToken cancellationToken)
+        {
+            await _byteStream.WriteAsync(buffer, 0, buffer.Length, cancellationToken);
+        }
+
+        public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
+        {
+            await _byteStream.WriteAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task FlushAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public byte[] GetBuffer()
+        {
+            return _byteStream.ToArray();
+        }
+
+        // IDisposable
+        protected override void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    _byteStream?.Dispose();
+                }
+            }
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/Transports/Client/TNamedPipeClientTransport.cs

@@ -0,0 +1,95 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.IO.Pipes;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    // ReSharper disable once InconsistentNaming
+    public class TNamedPipeClientTransport : TClientTransport
+    {
+        private NamedPipeClientStream _client;
+
+        public TNamedPipeClientTransport(string pipe) : this(".", pipe)
+        {
+        }
+
+        public TNamedPipeClientTransport(string server, string pipe)
+        {
+            var serverName = string.IsNullOrWhiteSpace(server) ? server : ".";
+
+            _client = new NamedPipeClientStream(serverName, pipe, PipeDirection.InOut, PipeOptions.None);
+        }
+
+        public override bool IsOpen => _client != null && _client.IsConnected;
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            if (IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.AlreadyOpen);
+            }
+
+            await _client.ConnectAsync(cancellationToken);
+        }
+
+        public override void Close()
+        {
+            if (_client != null)
+            {
+                _client.Dispose();
+                _client = null;
+            }
+        }
+
+        public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            if (_client == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            return await _client.ReadAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
+        {
+            if (_client == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+            }
+
+            await _client.WriteAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task FlushAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            _client.Dispose();
+        }
+    }
+}

lib/Thrift/Transports/Client/TSocketClientTransport.cs

@@ -0,0 +1,139 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    // ReSharper disable once InconsistentNaming
+    public class TSocketClientTransport : TStreamClientTransport
+    {
+        private bool _isDisposed;
+
+        public TSocketClientTransport(TcpClient client)
+        {
+            TcpClient = client ?? throw new ArgumentNullException(nameof(client));
+
+            if (IsOpen)
+            {
+                InputStream = client.GetStream();
+                OutputStream = client.GetStream();
+            }
+        }
+
+        public TSocketClientTransport(IPAddress host, int port)
+            : this(host, port, 0)
+        {
+        }
+
+        public TSocketClientTransport(IPAddress host, int port, int timeout)
+        {
+            Host = host;
+            Port = port;
+
+            TcpClient = new TcpClient();
+            TcpClient.ReceiveTimeout = TcpClient.SendTimeout = timeout;
+            TcpClient.Client.NoDelay = true;
+        }
+
+        public TcpClient TcpClient { get; private set; }
+        public IPAddress Host { get; }
+        public int Port { get; }
+
+        public int Timeout
+        {
+            set
+            {
+                if (TcpClient != null)
+                {
+                    TcpClient.ReceiveTimeout = TcpClient.SendTimeout = value;
+                }
+            }
+        }
+
+        public override bool IsOpen
+        {
+            get
+            {
+                if (TcpClient == null)
+                {
+                    return false;
+                }
+
+                return TcpClient.Connected;
+            }
+        }
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            if (IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.AlreadyOpen, "Socket already connected");
+            }
+
+            if (Port <= 0)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "Cannot open without port");
+            }
+
+            if (TcpClient == null)
+            {
+                throw new InvalidOperationException("Invalid or not initialized tcp client");
+            }
+
+            await TcpClient.ConnectAsync(Host, Port);
+
+            InputStream = TcpClient.GetStream();
+            OutputStream = TcpClient.GetStream();
+        }
+
+        public override void Close()
+        {
+            base.Close();
+
+            if (TcpClient != null)
+            {
+                TcpClient.Dispose();
+                TcpClient = null;
+            }
+        }
+
+        // IDisposable
+        protected override void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    TcpClient?.Dispose();
+
+                    base.Dispose(disposing);
+                }
+            }
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/Transports/Client/TStreamClientTransport.cs

@@ -0,0 +1,110 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    // ReSharper disable once InconsistentNaming
+    public class TStreamClientTransport : TClientTransport
+    {
+        private bool _isDisposed;
+
+        protected TStreamClientTransport()
+        {
+        }
+
+        public TStreamClientTransport(Stream inputStream, Stream outputStream)
+        {
+            InputStream = inputStream;
+            OutputStream = outputStream;
+        }
+
+        protected Stream OutputStream { get; set; }
+
+        protected Stream InputStream { get; set; }
+
+        public override bool IsOpen => true;
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+        }
+
+        public override void Close()
+        {
+            if (InputStream != null)
+            {
+                InputStream.Dispose();
+                InputStream = null;
+            }
+
+            if (OutputStream != null)
+            {
+                OutputStream.Dispose();
+                OutputStream = null;
+            }
+        }
+
+        public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            if (InputStream == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen,
+                    "Cannot read from null inputstream");
+            }
+
+            return await InputStream.ReadAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
+        {
+            if (OutputStream == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen,
+                    "Cannot read from null inputstream");
+            }
+
+            await OutputStream.WriteAsync(buffer, offset, length, cancellationToken);
+        }
+
+        public override async Task FlushAsync(CancellationToken cancellationToken)
+        {
+            await OutputStream.FlushAsync(cancellationToken);
+        }
+
+        // IDisposable
+        protected override void Dispose(bool disposing)
+        {
+            if (!_isDisposed)
+            {
+                if (disposing)
+                {
+                    InputStream?.Dispose();
+                    OutputStream?.Dispose();
+                }
+            }
+            _isDisposed = true;
+        }
+    }
+}

lib/Thrift/Transports/Client/TTlsSocketClientTransport.cs

@@ -0,0 +1,237 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Net;
+using System.Net.Security;
+using System.Net.Sockets;
+using System.Security.Authentication;
+using System.Security.Cryptography.X509Certificates;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Client
+{
+    //TODO: check for correct work
+
+    // ReSharper disable once InconsistentNaming
+    public class TTlsSocketClientTransport : TStreamClientTransport
+    {
+        private readonly X509Certificate2 _certificate;
+        private readonly RemoteCertificateValidationCallback _certValidator;
+        private readonly IPAddress _host;
+        private readonly bool _isServer;
+        private readonly LocalCertificateSelectionCallback _localCertificateSelectionCallback;
+        private readonly int _port;
+        private readonly SslProtocols _sslProtocols;
+        private TcpClient _client;
+        private SslStream _secureStream;
+        private int _timeout;
+
+        public TTlsSocketClientTransport(TcpClient client, X509Certificate2 certificate, bool isServer = false,
+            RemoteCertificateValidationCallback certValidator = null,
+            LocalCertificateSelectionCallback localCertificateSelectionCallback = null,
+            SslProtocols sslProtocols = SslProtocols.Tls12)
+        {
+            _client = client;
+            _certificate = certificate;
+            _certValidator = certValidator;
+            _localCertificateSelectionCallback = localCertificateSelectionCallback;
+            _sslProtocols = sslProtocols;
+            _isServer = isServer;
+
+            if (isServer && certificate == null)
+            {
+                throw new ArgumentException("TTlsSocketClientTransport needs certificate to be used for server",
+                    nameof(certificate));
+            }
+
+            if (IsOpen)
+            {
+                InputStream = client.GetStream();
+                OutputStream = client.GetStream();
+            }
+        }
+
+        public TTlsSocketClientTransport(IPAddress host, int port, string certificatePath,
+            RemoteCertificateValidationCallback certValidator = null,
+            LocalCertificateSelectionCallback localCertificateSelectionCallback = null,
+            SslProtocols sslProtocols = SslProtocols.Tls12)
+            : this(host, port, 0,
+                new X509Certificate2(certificatePath),
+                certValidator,
+                localCertificateSelectionCallback,
+                sslProtocols)
+        {
+        }
+
+        public TTlsSocketClientTransport(IPAddress host, int port,
+            X509Certificate2 certificate = null,
+            RemoteCertificateValidationCallback certValidator = null,
+            LocalCertificateSelectionCallback localCertificateSelectionCallback = null,
+            SslProtocols sslProtocols = SslProtocols.Tls12)
+            : this(host, port, 0,
+                certificate,
+                certValidator,
+                localCertificateSelectionCallback,
+                sslProtocols)
+        {
+        }
+
+        public TTlsSocketClientTransport(IPAddress host, int port, int timeout,
+            X509Certificate2 certificate,
+            RemoteCertificateValidationCallback certValidator = null,
+            LocalCertificateSelectionCallback localCertificateSelectionCallback = null,
+            SslProtocols sslProtocols = SslProtocols.Tls12)
+        {
+            _host = host;
+            _port = port;
+            _timeout = timeout;
+            _certificate = certificate;
+            _certValidator = certValidator;
+            _localCertificateSelectionCallback = localCertificateSelectionCallback;
+            _sslProtocols = sslProtocols;
+
+            InitSocket();
+        }
+
+        public int Timeout
+        {
+            set { _client.ReceiveTimeout = _client.SendTimeout = _timeout = value; }
+        }
+
+        public TcpClient TcpClient => _client;
+
+        public IPAddress Host => _host;
+
+        public int Port => _port;
+
+        public override bool IsOpen
+        {
+            get
+            {
+                if (_client == null)
+                {
+                    return false;
+                }
+
+                return _client.Connected;
+            }
+        }
+
+        private void InitSocket()
+        {
+            _client = new TcpClient();
+            _client.ReceiveTimeout = _client.SendTimeout = _timeout;
+            _client.Client.NoDelay = true;
+        }
+
+        private bool DefaultCertificateValidator(object sender, X509Certificate certificate, X509Chain chain,
+            SslPolicyErrors sslValidationErrors)
+        {
+            return sslValidationErrors == SslPolicyErrors.None;
+        }
+
+        public override async Task OpenAsync(CancellationToken cancellationToken)
+        {
+            if (IsOpen)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.AlreadyOpen, "Socket already connected");
+            }
+
+            if (_host == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "Cannot open null host");
+            }
+
+            if (_port <= 0)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "Cannot open without port");
+            }
+
+            if (_client == null)
+            {
+                InitSocket();
+            }
+
+            if (_client != null)
+            {
+                await _client.ConnectAsync(_host, _port);
+                await SetupTlsAsync();
+            }
+        }
+
+        public async Task SetupTlsAsync()
+        {
+            var validator = _certValidator ?? DefaultCertificateValidator;
+
+            if (_localCertificateSelectionCallback != null)
+            {
+                _secureStream = new SslStream(_client.GetStream(), false, validator, _localCertificateSelectionCallback);
+            }
+            else
+            {
+                _secureStream = new SslStream(_client.GetStream(), false, validator);
+            }
+
+            try
+            {
+                if (_isServer)
+                {
+                    // Server authentication
+                    await
+                        _secureStream.AuthenticateAsServerAsync(_certificate, _certValidator != null, _sslProtocols,
+                            true);
+                }
+                else
+                {
+                    // Client authentication
+                    var certs = _certificate != null
+                        ? new X509CertificateCollection {_certificate}
+                        : new X509CertificateCollection();
+
+                    var targetHost = _host.ToString();
+                    await _secureStream.AuthenticateAsClientAsync(targetHost, certs, _sslProtocols, true);
+                }
+            }
+            catch (Exception)
+            {
+                Close();
+                throw;
+            }
+
+            InputStream = _secureStream;
+            OutputStream = _secureStream;
+        }
+
+        public override void Close()
+        {
+            base.Close();
+            if (_client != null)
+            {
+                _client.Dispose();
+                _client = null;
+            }
+
+            if (_secureStream != null)
+            {
+                _secureStream.Dispose();
+                _secureStream = null;
+            }
+        }
+    }
+}

lib/Thrift/Transports/Server/TNamedPipeServerTransport.cs

@@ -0,0 +1,191 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.IO.Pipes;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports.Server
+{
+    // ReSharper disable once InconsistentNaming
+    public class TNamedPipeServerTransport : TServerTransport
+    {
+        /// <summary>
+        ///     This is the address of the Pipe on the localhost.
+        /// </summary>
+        private readonly string _pipeAddress;
+
+        private bool _asyncMode = true;
+        private volatile bool _isPending = true;
+
+        private NamedPipeServerStream _stream = null;
+
+        public TNamedPipeServerTransport(string pipeAddress)
+        {
+            _pipeAddress = pipeAddress;
+        }
+
+        public override void Listen()
+        {
+            // nothing to do here
+        }
+
+        public override void Close()
+        {
+            if (_stream != null)
+            {
+                try
+                {
+                    //TODO: check for disconection 
+                    _stream.Disconnect();
+                    _stream.Dispose();
+                }
+                finally
+                {
+                    _stream = null;
+                    _isPending = false;
+                }
+            }
+        }
+
+        public override bool IsClientPending()
+        {
+            return _isPending;
+        }
+
+        private void EnsurePipeInstance()
+        {
+            if (_stream == null)
+            {
+                var direction = PipeDirection.InOut;
+                var maxconn = 254;
+                var mode = PipeTransmissionMode.Byte;
+                var options = _asyncMode ? PipeOptions.Asynchronous : PipeOptions.None;
+                var inbuf = 4096;
+                var outbuf = 4096;
+                // TODO: security
+
+                try
+                {
+                    _stream = new NamedPipeServerStream(_pipeAddress, direction, maxconn, mode, options, inbuf, outbuf);
+                }
+                catch (NotImplementedException) // Mono still does not support async, fallback to sync
+                {
+                    if (_asyncMode)
+                    {
+                        options &= (~PipeOptions.Asynchronous);
+                        _stream = new NamedPipeServerStream(_pipeAddress, direction, maxconn, mode, options, inbuf,
+                            outbuf);
+                        _asyncMode = false;
+                    }
+                    else
+                    {
+                        throw;
+                    }
+                }
+            }
+        }
+
+        protected override async Task<TClientTransport> AcceptImplementationAsync(CancellationToken cancellationToken)
+        {
+            try
+            {
+                EnsurePipeInstance();
+
+                await _stream.WaitForConnectionAsync(cancellationToken);
+
+                var trans = new ServerTransport(_stream);
+                _stream = null; // pass ownership to ServerTransport
+
+                //_isPending = false;
+
+                return trans;
+            }
+            catch (TTransportException)
+            {
+                Close();
+                throw;
+            }
+            catch (Exception e)
+            {
+                Close();
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, e.Message);
+            }
+        }
+
+        private class ServerTransport : TClientTransport
+        {
+            private readonly NamedPipeServerStream _stream;
+
+            public ServerTransport(NamedPipeServerStream stream)
+            {
+                _stream = stream;
+            }
+
+            public override bool IsOpen => _stream != null && _stream.IsConnected;
+
+            public override async Task OpenAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    await Task.FromCanceled(cancellationToken);
+                }
+            }
+
+            public override void Close()
+            {
+                _stream?.Dispose();
+            }
+
+            public override async Task<int> ReadAsync(byte[] buffer, int offset, int length,
+                CancellationToken cancellationToken)
+            {
+                if (_stream == null)
+                {
+                    throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+                }
+
+                return await _stream.ReadAsync(buffer, offset, length, cancellationToken);
+            }
+
+            public override async Task WriteAsync(byte[] buffer, int offset, int length,
+                CancellationToken cancellationToken)
+            {
+                if (_stream == null)
+                {
+                    throw new TTransportException(TTransportException.ExceptionType.NotOpen);
+                }
+
+                await _stream.WriteAsync(buffer, offset, length, cancellationToken);
+            }
+
+            public override async Task FlushAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    await Task.FromCanceled(cancellationToken);
+                }
+            }
+
+            protected override void Dispose(bool disposing)
+            {
+                _stream?.Dispose();
+            }
+        }
+    }
+}

lib/Thrift/Transports/Server/TServerFramedTransport.cs

@@ -0,0 +1,150 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Transports.Client;
+
+namespace Thrift.Transports.Server
+{
+    // ReSharper disable once InconsistentNaming
+    public class TServerFramedTransport : TServerTransport
+    {
+        private readonly int _clientTimeout;
+        private readonly int _port;
+        private TcpListener _server;
+
+        public TServerFramedTransport(TcpListener listener)
+            : this(listener, 0)
+        {
+        }
+
+        public TServerFramedTransport(TcpListener listener, int clientTimeout)
+        {
+            _server = listener;
+            _clientTimeout = clientTimeout;
+        }
+
+        public TServerFramedTransport(int port)
+            : this(port, 0)
+        {
+        }
+
+        public TServerFramedTransport(int port, int clientTimeout)
+        {
+            _port = port;
+            _clientTimeout = clientTimeout;
+            try
+            {
+                // Make server socket
+                _server = new TcpListener(IPAddress.Any, _port);
+                _server.Server.NoDelay = true;
+            }
+            catch (Exception)
+            {
+                _server = null;
+                throw new TTransportException("Could not create ServerSocket on port " + port + ".");
+            }
+        }
+
+        public override void Listen()
+        {
+            // Make sure not to block on accept
+            if (_server != null)
+            {
+                try
+                {
+                    _server.Start();
+                }
+                catch (SocketException sx)
+                {
+                    throw new TTransportException("Could not accept on listening socket: " + sx.Message);
+                }
+            }
+        }
+
+        public override bool IsClientPending()
+        {
+            return _server.Pending();
+        }
+
+        protected override async Task<TClientTransport> AcceptImplementationAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TClientTransport>(cancellationToken);
+            }
+
+            if (_server == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "No underlying server socket.");
+            }
+
+            try
+            {
+                TFramedClientTransport tSocketTransport = null;
+                var tcpClient = await _server.AcceptTcpClientAsync();
+
+                try
+                {
+                    tSocketTransport = new TFramedClientTransport(new TSocketClientTransport(tcpClient)
+                    {
+                        Timeout = _clientTimeout
+                    });
+
+                    return tSocketTransport;
+                }
+                catch (Exception)
+                {
+                    if (tSocketTransport != null)
+                    {
+                        tSocketTransport.Dispose();
+                    }
+                    else //  Otherwise, clean it up ourselves.
+                    {
+                        ((IDisposable) tcpClient).Dispose();
+                    }
+
+                    throw;
+                }
+            }
+            catch (Exception ex)
+            {
+                throw new TTransportException(ex.ToString());
+            }
+        }
+
+        public override void Close()
+        {
+            if (_server != null)
+            {
+                try
+                {
+                    _server.Stop();
+                }
+                catch (Exception ex)
+                {
+                    throw new TTransportException("WARNING: Could not close server socket: " + ex);
+                }
+                _server = null;
+            }
+        }
+    }
+}

lib/Thrift/Transports/Server/TServerSocketTransport.cs

@@ -0,0 +1,174 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Transports.Client;
+
+namespace Thrift.Transports.Server
+{
+    // ReSharper disable once InconsistentNaming
+    public class TServerSocketTransport : TServerTransport
+    {
+        private readonly int _clientTimeout;
+        private readonly int _port;
+        private readonly bool _useBufferedSockets;
+        private readonly bool _useFramedTransport;
+        private TcpListener _server;
+
+        public TServerSocketTransport(TcpListener listener)
+            : this(listener, 0)
+        {
+        }
+
+        public TServerSocketTransport(TcpListener listener, int clientTimeout)
+        {
+            _server = listener;
+            _clientTimeout = clientTimeout;
+        }
+
+        public TServerSocketTransport(int port)
+            : this(port, 0)
+        {
+        }
+
+        public TServerSocketTransport(int port, int clientTimeout)
+            : this(port, clientTimeout, false)
+        {
+        }
+
+        public TServerSocketTransport(int port, int clientTimeout, bool useBufferedSockets):
+            this(port, clientTimeout, useBufferedSockets, false)
+        {
+        }
+        
+        public TServerSocketTransport(int port, int clientTimeout, bool useBufferedSockets, bool useFramedTransport)
+        {
+            _port = port;
+            _clientTimeout = clientTimeout;
+            _useBufferedSockets = useBufferedSockets;
+            _useFramedTransport = useFramedTransport;
+            try
+            {
+                // Make server socket
+                _server = new TcpListener(IPAddress.Any, _port);
+                _server.Server.NoDelay = true;
+            }
+            catch (Exception)
+            {
+                _server = null;
+                throw new TTransportException("Could not create ServerSocket on port " + port + ".");
+            }
+        }
+
+        public override void Listen()
+        {
+            // Make sure not to block on accept
+            if (_server != null)
+            {
+                try
+                {
+                    _server.Start();
+                }
+                catch (SocketException sx)
+                {
+                    throw new TTransportException("Could not accept on listening socket: " + sx.Message);
+                }
+            }
+        }
+
+        public override bool IsClientPending()
+        {
+            return _server.Pending();
+        }
+
+        protected override async Task<TClientTransport> AcceptImplementationAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TClientTransport>(cancellationToken);
+            }
+
+            if (_server == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "No underlying server socket.");
+            }
+
+            try
+            {
+                TClientTransport tSocketTransport = null;
+                var tcpClient = await _server.AcceptTcpClientAsync();
+
+                try
+                {
+                    tSocketTransport = new TSocketClientTransport(tcpClient)
+                    {
+                        Timeout = _clientTimeout
+                    };
+
+                    if (_useBufferedSockets)
+                    {
+                        tSocketTransport = new TBufferedClientTransport(tSocketTransport);
+                    }
+
+                    if (_useFramedTransport)
+                    {
+                        tSocketTransport = new TFramedClientTransport(tSocketTransport);
+                    }
+
+                    return tSocketTransport;
+                }
+                catch (Exception)
+                {
+                    if (tSocketTransport != null)
+                    {
+                        tSocketTransport.Dispose();
+                    }
+                    else //  Otherwise, clean it up ourselves.
+                    {
+                        ((IDisposable) tcpClient).Dispose();
+                    }
+
+                    throw;
+                }
+            }
+            catch (Exception ex)
+            {
+                throw new TTransportException(ex.ToString());
+            }
+        }
+
+        public override void Close()
+        {
+            if (_server != null)
+            {
+                try
+                {
+                    _server.Stop();
+                }
+                catch (Exception ex)
+                {
+                    throw new TTransportException("WARNING: Could not close server socket: " + ex);
+                }
+                _server = null;
+            }
+        }
+    }
+}

lib/Thrift/Transports/Server/TTlsServerSocketTransport.cs

@@ -0,0 +1,177 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.Net;
+using System.Net.Security;
+using System.Net.Sockets;
+using System.Security.Authentication;
+using System.Security.Cryptography.X509Certificates;
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Transports.Client;
+
+namespace Thrift.Transports.Server
+{
+    // ReSharper disable once InconsistentNaming
+    public class TTlsServerSocketTransport : TServerTransport
+    {
+        private readonly RemoteCertificateValidationCallback _clientCertValidator;
+        private readonly int _clientTimeout = 0;
+        private readonly LocalCertificateSelectionCallback _localCertificateSelectionCallback;
+        private readonly int _port;
+        private readonly X509Certificate2 _serverCertificate;
+        private readonly SslProtocols _sslProtocols;
+        private readonly bool _useBufferedSockets;
+        private readonly bool _useFramedTransport;
+        private TcpListener _server;
+
+        public TTlsServerSocketTransport(int port, X509Certificate2 certificate)
+            : this(port, false, certificate)
+        {
+        }
+
+        public TTlsServerSocketTransport(
+            int port,
+            bool useBufferedSockets,
+            X509Certificate2 certificate,
+            RemoteCertificateValidationCallback clientCertValidator = null,
+            LocalCertificateSelectionCallback localCertificateSelectionCallback = null,
+            SslProtocols sslProtocols = SslProtocols.Tls12) 
+            : this(port, useBufferedSockets, false, certificate,
+                clientCertValidator, localCertificateSelectionCallback, sslProtocols)
+        {
+        }
+        
+        public TTlsServerSocketTransport(
+            int port,
+            bool useBufferedSockets,
+            bool useFramedTransport,
+            X509Certificate2 certificate,
+            RemoteCertificateValidationCallback clientCertValidator = null,
+            LocalCertificateSelectionCallback localCertificateSelectionCallback = null,
+            SslProtocols sslProtocols = SslProtocols.Tls12)
+        {
+            if (!certificate.HasPrivateKey)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.Unknown,
+                    "Your server-certificate needs to have a private key");
+            }
+
+            _port = port;
+            _serverCertificate = certificate;
+            _useBufferedSockets = useBufferedSockets;
+            _useFramedTransport = useFramedTransport;
+            _clientCertValidator = clientCertValidator;
+            _localCertificateSelectionCallback = localCertificateSelectionCallback;
+            _sslProtocols = sslProtocols;
+
+            try
+            {
+                // Create server socket
+                _server = new TcpListener(IPAddress.Any, _port);
+                _server.Server.NoDelay = true;
+            }
+            catch (Exception)
+            {
+                _server = null;
+                throw new TTransportException($"Could not create ServerSocket on port {port}.");
+            }
+        }
+
+        public override void Listen()
+        {
+            // Make sure accept is not blocking
+            if (_server != null)
+            {
+                try
+                {
+                    _server.Start();
+                }
+                catch (SocketException sx)
+                {
+                    throw new TTransportException($"Could not accept on listening socket: {sx.Message}");
+                }
+            }
+        }
+
+        public override bool IsClientPending()
+        {
+            return _server.Pending();
+        }
+
+        protected override async Task<TClientTransport> AcceptImplementationAsync(CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<TClientTransport>(cancellationToken);
+            }
+
+            if (_server == null)
+            {
+                throw new TTransportException(TTransportException.ExceptionType.NotOpen, "No underlying server socket.");
+            }
+
+            try
+            {
+                var client = await _server.AcceptTcpClientAsync();
+                client.SendTimeout = client.ReceiveTimeout = _clientTimeout;
+
+                //wrap the client in an SSL Socket passing in the SSL cert
+                var tTlsSocket = new TTlsSocketClientTransport(client, _serverCertificate, true, _clientCertValidator,
+                    _localCertificateSelectionCallback, _sslProtocols);
+
+                await tTlsSocket.SetupTlsAsync();
+
+                TClientTransport trans = tTlsSocket;
+                
+                if (_useBufferedSockets)
+                {
+                    trans = new TBufferedClientTransport(trans);
+                }
+
+                if (_useFramedTransport)
+                {
+                    trans = new TFramedClientTransport(trans);
+                }
+                
+                return trans;
+            }
+            catch (Exception ex)
+            {
+                throw new TTransportException(ex.ToString());
+            }
+        }
+
+        public override void Close()
+        {
+            if (_server != null)
+            {
+                try
+                {
+                    _server.Stop();
+                }
+                catch (Exception ex)
+                {
+                    throw new TTransportException($"WARNING: Could not close server socket: {ex}");
+                }
+
+                _server = null;
+            }
+        }
+    }
+}

lib/Thrift/Transports/TClientTransport.cs

@@ -0,0 +1,179 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports
+{
+    //TODO: think about client info 
+    // ReSharper disable once InconsistentNaming
+    public abstract class TClientTransport : IDisposable
+    {
+        //TODO: think how to avoid peek byte
+        private readonly byte[] _peekBuffer = new byte[1];
+        private bool _hasPeekByte;
+        public abstract bool IsOpen { get; }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        public async Task<bool> PeekAsync(CancellationToken cancellationToken)
+        {
+            //If we already have a byte read but not consumed, do nothing.
+            if (_hasPeekByte)
+            {
+                return true;
+            }
+
+            //If transport closed we can't peek.
+            if (!IsOpen)
+            {
+                return false;
+            }
+
+            //Try to read one byte. If succeeds we will need to store it for the next read.
+            try
+            {
+                var bytes = await ReadAsync(_peekBuffer, 0, 1, cancellationToken);
+                if (bytes == 0)
+                {
+                    return false;
+                }
+            }
+            catch (IOException)
+            {
+                return false;
+            }
+
+            _hasPeekByte = true;
+            return true;
+        }
+
+        public virtual async Task OpenAsync()
+        {
+            await OpenAsync(CancellationToken.None);
+        }
+
+        public abstract Task OpenAsync(CancellationToken cancellationToken);
+
+        public abstract void Close();
+
+        protected static void ValidateBufferArgs(byte[] buffer, int offset, int length)
+        {
+            if (buffer == null)
+            {
+                throw new ArgumentNullException(nameof(buffer));
+            }
+
+            if (offset < 0)
+            {
+                throw new ArgumentOutOfRangeException(nameof(offset), "Buffer offset is smaller than zero.");
+            }
+
+            if (length < 0)
+            {
+                throw new ArgumentOutOfRangeException(nameof(length), "Buffer length is smaller than zero.");
+            }
+
+            if (offset + length > buffer.Length)
+            {
+                throw new ArgumentOutOfRangeException(nameof(buffer), "Not enough data.");
+            }
+        }
+
+        public virtual async Task<int> ReadAsync(byte[] buffer, int offset, int length)
+        {
+            return await ReadAsync(buffer, offset, length, CancellationToken.None);
+        }
+
+        public abstract Task<int> ReadAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken);
+
+        public virtual async Task<int> ReadAllAsync(byte[] buffer, int offset, int length)
+        {
+            return await ReadAllAsync(buffer, offset, length, CancellationToken.None);
+        }
+
+        public virtual async Task<int> ReadAllAsync(byte[] buffer, int offset, int length,
+            CancellationToken cancellationToken)
+        {
+            ValidateBufferArgs(buffer, offset, length);
+
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return await Task.FromCanceled<int>(cancellationToken);
+            }
+
+            var retrieved = 0;
+
+            //If we previously peeked a byte, we need to use that first.
+            if (_hasPeekByte)
+            {
+                buffer[offset + retrieved++] = _peekBuffer[0];
+                _hasPeekByte = false;
+            }
+
+            while (retrieved < length)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return await Task.FromCanceled<int>(cancellationToken);
+                }
+
+                var returnedCount = await ReadAsync(buffer, offset + retrieved, length - retrieved, cancellationToken);
+                if (returnedCount <= 0)
+                {
+                    throw new TTransportException(TTransportException.ExceptionType.EndOfFile,
+                        "Cannot read, Remote side has closed");
+                }
+                retrieved += returnedCount;
+            }
+            return retrieved;
+        }
+
+        public virtual async Task WriteAsync(byte[] buffer)
+        {
+            await WriteAsync(buffer, CancellationToken.None);
+        }
+
+        public virtual async Task WriteAsync(byte[] buffer, CancellationToken cancellationToken)
+        {
+            await WriteAsync(buffer, 0, buffer.Length, CancellationToken.None);
+        }
+
+        public virtual async Task WriteAsync(byte[] buffer, int offset, int length)
+        {
+            await WriteAsync(buffer, offset, length, CancellationToken.None);
+        }
+
+        public abstract Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken);
+
+        public virtual async Task FlushAsync()
+        {
+            await FlushAsync(CancellationToken.None);
+        }
+
+        public abstract Task FlushAsync(CancellationToken cancellationToken);
+
+        protected abstract void Dispose(bool disposing);
+    }
+}

lib/Thrift/Transports/TServerTransport.cs

@@ -0,0 +1,54 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Thrift.Transports
+{
+    // ReSharper disable once InconsistentNaming
+    public abstract class TServerTransport
+    {
+        public abstract void Listen();
+        public abstract void Close();
+        public abstract bool IsClientPending();
+
+        protected virtual async Task<TClientTransport> AcceptImplementationAsync()
+        {
+            return await AcceptImplementationAsync(CancellationToken.None);
+        }
+
+        protected abstract Task<TClientTransport> AcceptImplementationAsync(CancellationToken cancellationToken);
+
+        public async Task<TClientTransport> AcceptAsync()
+        {
+            return await AcceptAsync(CancellationToken.None);
+        }
+
+        public async Task<TClientTransport> AcceptAsync(CancellationToken cancellationToken)
+        {
+            var transport = await AcceptImplementationAsync(cancellationToken);
+
+            if (transport == null)
+            {
+                throw new TTransportException($"{nameof(AcceptImplementationAsync)} should not return null");
+            }
+
+            return transport;
+        }
+    }
+}

lib/Thrift/Transports/TTransportException.cs

@@ -0,0 +1,58 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Transports
+{
+    // ReSharper disable once InconsistentNaming
+    public class TTransportException : TException
+    {
+        public enum ExceptionType
+        {
+            Unknown,
+            NotOpen,
+            AlreadyOpen,
+            TimedOut,
+            EndOfFile,
+            Interrupted
+        }
+
+        protected ExceptionType ExType;
+
+        public TTransportException()
+        {
+        }
+
+        public TTransportException(ExceptionType exType)
+            : this()
+        {
+            ExType = exType;
+        }
+
+        public TTransportException(ExceptionType exType, string message)
+            : base(message)
+        {
+            ExType = exType;
+        }
+
+        public TTransportException(string message)
+            : base(message)
+        {
+        }
+
+        public ExceptionType Type => ExType;
+    }
+}

lib/Thrift/Transports/TTransportFactory.cs

@@ -0,0 +1,35 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+namespace Thrift.Transports
+{
+    /// <summary>
+    ///     From Mark Slee & Aditya Agarwal of Facebook:
+    ///     Factory class used to create wrapped instance of Transports.
+    ///     This is used primarily in servers, which get Transports from
+    ///     a ServerTransport and then may want to mutate them (i.e. create
+    ///     a BufferedTransport from the underlying base transport)
+    /// </summary>
+    // ReSharper disable once InconsistentNaming
+    public class TTransportFactory
+    {
+        public virtual TClientTransport GetTransport(TClientTransport trans)
+        {
+            return trans;
+        }
+    }
+}

samples/Exporters/TestJaeger.cs

@@ -55,6 +55,7 @@ namespace Samples
             // 4. Create a scoped span. It will end automatically when using statement ends
             using (var scope = tracer.SpanBuilder("Main").StartScopedSpan())
             {
+                tracer.CurrentSpan.SetAttribute("custom-attribute", 55);
                 Console.WriteLine("About to do a busy work");
                 for (int i = 0; i < 10; i++)
                 {

src/OpenTelemetry.Exporter.Jaeger/OpenTelemetry.Exporter.Jaeger.csproj

@@ -11,6 +11,6 @@
 
   <ItemGroup>
     <ProjectReference Include="..\OpenTelemetry.Abstractions\OpenTelemetry.Abstractions.csproj" />
-    <PackageReference Include="ApacheThrift" Version="0.12.0.1" />
+    <ProjectReference Include="..\..\lib\Thrift\Thrift.csproj" />
   </ItemGroup>
 </Project>