mirror of https://github.com/grpc/grpc-go.git
68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
/*
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*
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* Copyright 2018 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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// Binary server demonstrates how to handle canceled contexts when a client
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// cancels an in-flight RPC.
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package main
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import (
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"flag"
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"fmt"
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"io"
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"log"
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"net"
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"google.golang.org/grpc"
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pb "google.golang.org/grpc/examples/features/proto/echo"
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)
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var port = flag.Int("port", 50051, "the port to serve on")
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type server struct {
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pb.UnimplementedEchoServer
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}
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func (s *server) BidirectionalStreamingEcho(stream pb.Echo_BidirectionalStreamingEchoServer) error {
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for {
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in, err := stream.Recv()
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if err != nil {
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fmt.Printf("server: error receiving from stream: %v\n", err)
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if err == io.EOF {
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return nil
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}
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return err
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}
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fmt.Printf("echoing message %q\n", in.Message)
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stream.Send(&pb.EchoResponse{Message: in.Message})
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}
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}
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func main() {
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flag.Parse()
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lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
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if err != nil {
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log.Fatalf("failed to listen: %v", err)
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}
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fmt.Printf("server listening at port %v\n", lis.Addr())
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s := grpc.NewServer()
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pb.RegisterEchoServer(s, &server{})
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s.Serve(lis)
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}
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