mirror of https://github.com/grpc/grpc-go.git
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
/*
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*
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* Copyright 2022 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 an example server which authenticates clients using mTLS.
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package main
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import (
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"context"
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"crypto/tls"
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"crypto/x509"
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"flag"
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"fmt"
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"log"
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"net"
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"os"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/examples/data"
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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 ecServer struct {
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pb.UnimplementedEchoServer
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}
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func (s *ecServer) UnaryEcho(ctx context.Context, req *pb.EchoRequest) (*pb.EchoResponse, error) {
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return &pb.EchoResponse{Message: req.Message}, nil
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}
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func main() {
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flag.Parse()
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log.Printf("server starting on port %d...\n", *port)
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cert, err := tls.LoadX509KeyPair(data.Path("x509/server_cert.pem"), data.Path("x509/server_key.pem"))
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if err != nil {
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log.Fatalf("failed to load key pair: %s", err)
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}
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ca := x509.NewCertPool()
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caFilePath := data.Path("x509/client_ca_cert.pem")
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caBytes, err := os.ReadFile(caFilePath)
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if err != nil {
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log.Fatalf("failed to read ca cert %q: %v", caFilePath, err)
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}
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if ok := ca.AppendCertsFromPEM(caBytes); !ok {
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log.Fatalf("failed to parse %q", caFilePath)
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}
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tlsConfig := &tls.Config{
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ClientAuth: tls.RequireAndVerifyClientCert,
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Certificates: []tls.Certificate{cert},
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ClientCAs: ca,
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}
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s := grpc.NewServer(grpc.Creds(credentials.NewTLS(tlsConfig)))
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pb.RegisterEchoServer(s, &ecServer{})
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lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%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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if err := s.Serve(lis); err != nil {
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log.Fatalf("failed to serve: %v", err)
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}
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}
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