| /* |
| * |
| * Copyright 2018 gRPC authors. |
| * |
| * Licensed 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. |
| * |
| */ |
| |
| // Binary server is an example server. |
| package main |
| |
| import ( |
| "context" |
| "flag" |
| "fmt" |
| "io" |
| "log" |
| "net" |
| |
| "google.golang.org/grpc" |
| "google.golang.org/grpc/codes" |
| pb "google.golang.org/grpc/examples/features/proto/echo" |
| "google.golang.org/grpc/status" |
| ) |
| |
| var port = flag.Int("port", 50051, "the port to serve on") |
| |
| type server struct{} |
| |
| func (s *server) UnaryEcho(ctx context.Context, in *pb.EchoRequest) (*pb.EchoResponse, error) { |
| return nil, status.Error(codes.Unimplemented, "not implemented") |
| } |
| |
| func (s *server) ServerStreamingEcho(in *pb.EchoRequest, stream pb.Echo_ServerStreamingEchoServer) error { |
| return status.Error(codes.Unimplemented, "not implemented") |
| } |
| |
| func (s *server) ClientStreamingEcho(stream pb.Echo_ClientStreamingEchoServer) error { |
| return status.Error(codes.Unimplemented, "not implemented") |
| } |
| |
| func (s *server) BidirectionalStreamingEcho(stream pb.Echo_BidirectionalStreamingEchoServer) error { |
| for { |
| in, err := stream.Recv() |
| if err != nil { |
| fmt.Printf("server: error receiving from stream: %v\n", err) |
| if err == io.EOF { |
| return nil |
| } |
| return err |
| } |
| fmt.Printf("echoing message %q\n", in.Message) |
| stream.Send(&pb.EchoResponse{Message: in.Message}) |
| } |
| } |
| |
| func main() { |
| flag.Parse() |
| |
| lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port)) |
| if err != nil { |
| log.Fatalf("failed to listen: %v", err) |
| } |
| fmt.Printf("server listening at port %v\n", lis.Addr()) |
| s := grpc.NewServer() |
| pb.RegisterEchoServer(s, &server{}) |
| s.Serve(lis) |
| } |