package integration import ( "crypto/tls" "crypto/x509" "io/ioutil" "net" "os" "time" "github.com/containous/traefik/integration/helloworld" "github.com/containous/traefik/integration/try" "github.com/go-check/check" "golang.org/x/net/context" "google.golang.org/grpc" "google.golang.org/grpc/credentials" ) var LocalhostCert []byte var LocalhostKey []byte // GRPCSuite type GRPCSuite struct{ BaseSuite } type myserver struct{} func (s *GRPCSuite) SetUpSuite(c *check.C) { var err error LocalhostCert, err = ioutil.ReadFile("./resources/tls/local.cert") c.Assert(err, check.IsNil) LocalhostKey, err = ioutil.ReadFile("./resources/tls/local.key") c.Assert(err, check.IsNil) } func (s *myserver) SayHello(ctx context.Context, in *helloworld.HelloRequest) (*helloworld.HelloReply, error) { return &helloworld.HelloReply{Message: "Hello " + in.Name}, nil } func startGRPCServer(lis net.Listener) error { cert, err := tls.X509KeyPair(LocalhostCert, LocalhostKey) if err != nil { return err } creds := credentials.NewServerTLSFromCert(&cert) serverOption := grpc.Creds(creds) var s *grpc.Server = grpc.NewServer(serverOption) defer s.Stop() helloworld.RegisterGreeterServer(s, &myserver{}) return s.Serve(lis) } func callHelloClientGRPC() (string, error) { roots := x509.NewCertPool() roots.AppendCertsFromPEM(LocalhostCert) credsClient := credentials.NewClientTLSFromCert(roots, "") conn, err := grpc.Dial("127.0.0.1:4443", grpc.WithTransportCredentials(credsClient)) if err != nil { return "", err } defer conn.Close() client := helloworld.NewGreeterClient(conn) name := "World" r, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: name}) if err != nil { return "", err } return r.Message, nil } func (s *GRPCSuite) TestGRPC(c *check.C) { lis, err := net.Listen("tcp", ":0") _, port, err := net.SplitHostPort(lis.Addr().String()) c.Assert(err, check.IsNil) go func() { err := startGRPCServer(lis) c.Log(err) c.Assert(err, check.IsNil) }() file := s.adaptFile(c, "fixtures/grpc/config.toml", struct { CertContent string KeyContent string GRPCServerPort string }{ CertContent: string(LocalhostCert), KeyContent: string(LocalhostKey), GRPCServerPort: port, }) defer os.Remove(file) cmd, display := s.traefikCmd(withConfigFile(file)) defer display(c) err = cmd.Start() c.Assert(err, check.IsNil) defer cmd.Process.Kill() // wait for Traefik err = try.GetRequest("http://127.0.0.1:8080/api/providers", 1*time.Second, try.BodyContains("Host:127.0.0.1")) c.Assert(err, check.IsNil) var response string err = try.Do(1*time.Second, func() error { response, err = callHelloClientGRPC() return err }) c.Assert(err, check.IsNil) c.Assert(response, check.Equals, "Hello World") }