mirror of https://github.com/grpc/grpc-go.git
85 lines
1.9 KiB
Go
85 lines
1.9 KiB
Go
/*
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*
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* Copyright 2025 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 is a server for the dualstack example.
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package main
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import (
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"context"
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"fmt"
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"log"
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"net"
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"sync"
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"google.golang.org/grpc"
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hwpb "google.golang.org/grpc/examples/helloworld/helloworld"
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)
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type greeterServer struct {
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hwpb.UnimplementedGreeterServer
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addressType string
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address string
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port uint32
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}
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func (s *greeterServer) SayHello(_ context.Context, req *hwpb.HelloRequest) (*hwpb.HelloReply, error) {
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return &hwpb.HelloReply{
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Message: fmt.Sprintf("Hello %s from server<%d> type: %s)", req.GetName(), s.port, s.addressType),
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}, nil
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}
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func main() {
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servers := []*greeterServer{
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{
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addressType: "both IPv4 and IPv6",
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address: "[::]",
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port: 50051,
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},
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{
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addressType: "IPv4 only",
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address: "127.0.0.1",
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port: 50052,
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},
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{
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addressType: "IPv6 only",
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address: "[::1]",
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port: 50053,
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},
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}
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var wg sync.WaitGroup
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for _, server := range servers {
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bindAddr := fmt.Sprintf("%s:%d", server.address, server.port)
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lis, err := net.Listen("tcp", bindAddr)
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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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s := grpc.NewServer()
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hwpb.RegisterGreeterServer(s, server)
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wg.Add(1)
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go func() {
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defer wg.Done()
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if err := s.Serve(lis); err != nil {
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log.Panicf("failed to serve: %v", err)
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}
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}()
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log.Printf("serving on %s\n", bindAddr)
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}
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wg.Wait()
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}
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