Swap to Netty's SslContextBuilder

We provide a utility to configure the SslContext for our usage, which we
can change as necessary.

benchmarks/src/main/java/io/grpc/benchmarks/qps/AsyncClient.java

@@ -65,6 +65,7 @@ import io.grpc.Channel;
 import io.grpc.ChannelImpl;
 import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
+import io.grpc.transport.netty.GrpcSslContexts;
 import io.grpc.transport.netty.NegotiationType;
 import io.grpc.transport.netty.NettyChannelBuilder;
 import io.grpc.transport.okhttp.OkHttpChannelBuilder;
@@ -184,7 +185,7 @@ public class AsyncClient {
       // Force the hostname to match the cert the server uses.
       address = InetAddress.getByAddress("foo.test.google.fr", address.getAddress());
       File cert = loadCert("ca.pem");
-      context = SslContext.newClientContext(cert);
+      context = GrpcSslContexts.forClient().trustManager(cert).build();
     }
     return NettyChannelBuilder
              .forAddress(new InetSocketAddress(address, config.port))

benchmarks/src/main/java/io/grpc/benchmarks/qps/AsyncServer.java

@@ -45,6 +45,7 @@ import grpc.testing.TestServiceGrpc;
 import io.grpc.ServerImpl;
 import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
+import io.grpc.transport.netty.GrpcSslContexts;
 import io.grpc.transport.netty.NettyServerBuilder;
 import io.netty.handler.ssl.SslContext;
 
@@ -82,7 +83,7 @@ public class AsyncServer {
 
       File cert = loadCert("server1.pem");
       File key = loadCert("server1.key");
-      sslContext = SslContext.newServerContext(cert, key);
+      sslContext = GrpcSslContexts.forServer(cert, key).build();
     }
 
     if (port == 0) {

benchmarks/src/main/java/io/grpc/benchmarks/qps/ClientUtil.java

@@ -39,6 +39,7 @@ import com.google.protobuf.ByteString;
 import grpc.testing.Qpstest;
 import grpc.testing.Qpstest.SimpleRequest;
 import io.grpc.Channel;
+import io.grpc.transport.netty.GrpcSslContexts;
 import io.grpc.transport.netty.NegotiationType;
 import io.grpc.transport.netty.NettyChannelBuilder;
 import io.grpc.transport.okhttp.OkHttpChannelBuilder;
@@ -91,7 +92,7 @@ final class ClientUtil {
       // Force the hostname to match the cert the server uses.
       address = InetAddress.getByAddress("foo.test.google.fr", address.getAddress());
       File cert = loadCert("ca.pem");
-      context = SslContext.newClientContext(cert);
+      context = GrpcSslContexts.forClient().trustManager(cert).build();
     }
     return NettyChannelBuilder
         .forAddress(new InetSocketAddress(address, config.port))

integration-testing/src/main/java/io/grpc/testing/integration/TestServiceClient.java

@@ -32,6 +32,7 @@
 package io.grpc.testing.integration;
 
 import io.grpc.ChannelImpl;
+import io.grpc.transport.netty.GrpcSslContexts;
 import io.grpc.transport.netty.NegotiationType;
 import io.grpc.transport.netty.NettyChannelBuilder;
 import io.grpc.transport.okhttp.OkHttpChannelBuilder;
@@ -224,7 +225,7 @@ public class TestServiceClient {
         SslContext sslContext = null;
         if (useTestCa) {
           try {
-            sslContext = SslContext.newClientContext(Util.loadCert("ca.pem"));
+            sslContext = GrpcSslContexts.forClient().trustManager(Util.loadCert("ca.pem")).build();
           } catch (Exception ex) {
             throw new RuntimeException(ex);
           }

integration-testing/src/main/java/io/grpc/testing/integration/TestServiceServer.java

@@ -36,6 +36,7 @@ import com.google.common.util.concurrent.MoreExecutors;
 import io.grpc.ServerImpl;
 import io.grpc.ServerInterceptors;
 import io.grpc.testing.TestUtils;
+import io.grpc.transport.netty.GrpcSslContexts;
 import io.grpc.transport.netty.NettyServerBuilder;
 import io.netty.handler.ssl.SslContext;
 
@@ -133,8 +134,8 @@ public class TestServiceServer {
     executor = Executors.newSingleThreadScheduledExecutor();
     SslContext sslContext = null;
     if (useTls) {
-      sslContext = SslContext.newServerContext(Util.loadCert("server1.pem"),
-                                               Util.loadCert("server1.key"));
+      sslContext = GrpcSslContexts.forServer(
+              Util.loadCert("server1.pem"), Util.loadCert("server1.key")).build();
     }
     server = NettyServerBuilder.forPort(port)
         .sslContext(sslContext)

integration-testing/src/test/java/io/grpc/testing/integration/Http2NettyTest.java

@@ -32,9 +32,9 @@
 package io.grpc.testing.integration;
 
 import io.grpc.ChannelImpl;
+import io.grpc.transport.netty.GrpcSslContexts;
 import io.grpc.transport.netty.NettyChannelBuilder;
 import io.grpc.transport.netty.NettyServerBuilder;
-import io.netty.handler.ssl.SslContext;
 
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
@@ -57,8 +57,8 @@ public class Http2NettyTest extends AbstractTransportTest {
   public static void startServer() {
     try {
       startStaticServer(NettyServerBuilder.forPort(serverPort)
-          .sslContext(SslContext.newServerContext(
-              Util.loadCert("server1.pem"), Util.loadCert("server1.key"))));
+          .sslContext(GrpcSslContexts.forServer(
+              Util.loadCert("server1.pem"), Util.loadCert("server1.key")).build()));
     } catch (IOException ex) {
       throw new RuntimeException(ex);
     }
@@ -76,7 +76,7 @@ public class Http2NettyTest extends AbstractTransportTest {
           = InetAddress.getByAddress("foo.test.google.fr", new byte[] {127, 0, 0, 1});
       return NettyChannelBuilder
           .forAddress(new InetSocketAddress(address, serverPort))
-          .sslContext(SslContext.newClientContext(Util.loadCert("ca.pem")))
+          .sslContext(GrpcSslContexts.forClient().trustManager(Util.loadCert("ca.pem")).build())
           .build();
     } catch (Exception ex) {
       throw new RuntimeException(ex);

netty/src/main/java/io/grpc/transport/netty/GrpcSslContexts.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2015, Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ *    * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package io.grpc.transport.netty;
+
+import io.netty.handler.codec.http2.Http2SecurityUtil;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.SupportedCipherSuiteFilter;
+
+import java.io.File;
+
+/**
+ * Utility for configuring SslContext for gRPC.
+ */
+public class GrpcSslContexts {
+  private GrpcSslContexts() {}
+
+  /**
+   * Creates a SslContextBuilder with ciphers and APN appropriate for gRPC.
+   *
+   * @see SslContextBuilder#forClient()
+   * @see #configure(SslContextBuilder)
+   */
+  public static SslContextBuilder forClient() {
+    return configure(SslContextBuilder.forClient());
+  }
+
+  /**
+   * Creates a SslContextBuilder with ciphers and APN appropriate for gRPC.
+   *
+   * @see SslContextBuilder#forServer(File, File)
+   * @see #configure(SslContextBuilder)
+   */
+  public static SslContextBuilder forServer(File keyCertChainFile, File keyFile) {
+    return configure(SslContextBuilder.forServer(keyCertChainFile, keyFile));
+  }
+
+  /**
+   * Creates a SslContextBuilder with ciphers and APN appropriate for gRPC.
+   *
+   * @see SslContextBuilder#forServer(File, File, String)
+   * @see #configure(SslContextBuilder)
+   */
+  public static SslContextBuilder forServer(
+      File keyCertChainFile, File keyFile, String keyPassword) {
+    return configure(SslContextBuilder.forServer(keyCertChainFile, keyFile, keyPassword));
+  }
+
+  /**
+   * Set ciphers and APN appropriate for gRPC. Precisely what is set is permitted to change, so if
+   * an application requires particular settings it should override the options set here.
+   */
+  public static SslContextBuilder configure(SslContextBuilder builder) {
+    return builder.ciphers(Http2SecurityUtil.CIPHERS, SupportedCipherSuiteFilter.INSTANCE)
+        // We currently handle ALPN ourselves, so we require ALPN in Netty disabled.
+        .applicationProtocolConfig(null);
+  }
+}

netty/src/main/java/io/grpc/transport/netty/NettyChannelBuilder.java

@@ -111,7 +111,10 @@ public final class NettyChannelBuilder extends AbstractChannelBuilder<NettyChann
     return this;
   }
 
-  /** SSL/TLS context to use instead of the system default. */
+  /**
+   * SSL/TLS context to use instead of the system default. It must have been configured with {@link
+   * GrpcSslContexts}, but options could have been overridden.
+   */
   public NettyChannelBuilder sslContext(SslContext sslContext) {
     this.sslContext = sslContext;
     return this;

netty/src/main/java/io/grpc/transport/netty/NettyClientTransport.java

@@ -142,7 +142,7 @@ class NettyClientTransport implements ClientTransport {
       case TLS:
         if (sslContext == null) {
           try {
-            sslContext = SslContext.newClientContext();
+            sslContext = GrpcSslContexts.forClient().build();
           } catch (SSLException ex) {
             throw new RuntimeException(ex);
           }

netty/src/main/java/io/grpc/transport/netty/NettyServerBuilder.java

@@ -161,7 +161,8 @@ public final class NettyServerBuilder extends AbstractServerBuilder<NettyServerB
   }
 
   /**
-   * Sets the TLS context to use for encryption. Providing a context enables encryption.
+   * Sets the TLS context to use for encryption. Providing a context enables encryption. It must
+   * have been configured with {@link GrpcSslContexts}, but options could have been overridden.
    */
   public NettyServerBuilder sslContext(SslContext sslContext) {
     this.sslContext = sslContext;