1/* 2 * 3 * Copyright 2018 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19// Binary server is an example server. 20package main 21 22import ( 23 "context" 24 "flag" 25 "fmt" 26 "log" 27 "net" 28 29 "google.golang.org/grpc" 30 "google.golang.org/grpc/codes" 31 pb "google.golang.org/grpc/examples/features/proto/echo" 32 "google.golang.org/grpc/status" 33 34 _ "google.golang.org/grpc/encoding/gzip" // Install the gzip compressor 35) 36 37var port = flag.Int("port", 50051, "the port to serve on") 38 39type server struct{} 40 41func (s *server) UnaryEcho(ctx context.Context, in *pb.EchoRequest) (*pb.EchoResponse, error) { 42 fmt.Printf("UnaryEcho called with message %q\n", in.GetMessage()) 43 return &pb.EchoResponse{Message: in.Message}, nil 44} 45 46func (s *server) ServerStreamingEcho(in *pb.EchoRequest, stream pb.Echo_ServerStreamingEchoServer) error { 47 return status.Error(codes.Unimplemented, "not implemented") 48} 49 50func (s *server) ClientStreamingEcho(stream pb.Echo_ClientStreamingEchoServer) error { 51 return status.Error(codes.Unimplemented, "not implemented") 52} 53 54func (s *server) BidirectionalStreamingEcho(stream pb.Echo_BidirectionalStreamingEchoServer) error { 55 return status.Error(codes.Unimplemented, "not implemented") 56} 57 58func main() { 59 flag.Parse() 60 61 lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port)) 62 if err != nil { 63 log.Fatalf("failed to listen: %v", err) 64 } 65 fmt.Printf("server listening at %v\n", lis.Addr()) 66 67 s := grpc.NewServer() 68 pb.RegisterEchoServer(s, &server{}) 69 s.Serve(lis) 70} 71