test: add transport grpc test (#1580)

* add transport grpc test

* fix node

internal/testdata/helloworld/helloworld.pb.go

@@ -0,0 +1,221 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.17.3
+// source: helloworld/helloworld.proto
+
+package helloworld
+
+import (
+	_ "google.golang.org/genproto/googleapis/api/annotations"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// The request message containing the user's name.
+type HelloRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *HelloRequest) Reset() {
+	*x = HelloRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_helloworld_helloworld_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *HelloRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*HelloRequest) ProtoMessage() {}
+
+func (x *HelloRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_helloworld_helloworld_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HelloRequest.ProtoReflect.Descriptor instead.
+func (*HelloRequest) Descriptor() ([]byte, []int) {
+	return file_helloworld_helloworld_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *HelloRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+// The response message containing the greetings
+type HelloReply struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Message string `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"`
+}
+
+func (x *HelloReply) Reset() {
+	*x = HelloReply{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_helloworld_helloworld_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *HelloReply) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*HelloReply) ProtoMessage() {}
+
+func (x *HelloReply) ProtoReflect() protoreflect.Message {
+	mi := &file_helloworld_helloworld_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HelloReply.ProtoReflect.Descriptor instead.
+func (*HelloReply) Descriptor() ([]byte, []int) {
+	return file_helloworld_helloworld_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *HelloReply) GetMessage() string {
+	if x != nil {
+		return x.Message
+	}
+	return ""
+}
+
+var File_helloworld_helloworld_proto protoreflect.FileDescriptor
+
+var file_helloworld_helloworld_proto_rawDesc = []byte{
+	0x0a, 0x1b, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2f, 0x68, 0x65, 0x6c,
+	0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0a, 0x68,
+	0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x1a, 0x1c, 0x67, 0x6f, 0x6f, 0x67, 0x6c,
+	0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e,
+	0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x22, 0x0a, 0x0c, 0x48, 0x65, 0x6c, 0x6c, 0x6f,
+	0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x22, 0x26, 0x0a, 0x0a, 0x48,
+	0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x12, 0x18, 0x0a, 0x07, 0x6d, 0x65, 0x73,
+	0x73, 0x61, 0x67, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x6d, 0x65, 0x73, 0x73,
+	0x61, 0x67, 0x65, 0x32, 0x63, 0x0a, 0x07, 0x47, 0x72, 0x65, 0x65, 0x74, 0x65, 0x72, 0x12, 0x58,
+	0x0a, 0x08, 0x53, 0x61, 0x79, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x12, 0x18, 0x2e, 0x68, 0x65, 0x6c,
+	0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x71,
+	0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c,
+	0x64, 0x2e, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x1a, 0x82, 0xd3,
+	0xe4, 0x93, 0x02, 0x14, 0x12, 0x12, 0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c,
+	0x64, 0x2f, 0x7b, 0x6e, 0x61, 0x6d, 0x65, 0x7d, 0x42, 0x3d, 0x5a, 0x3b, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73,
+	0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x76, 0x32, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72,
+	0x6e, 0x61, 0x6c, 0x2f, 0x74, 0x65, 0x73, 0x74, 0x64, 0x61, 0x74, 0x61, 0x2f, 0x68, 0x65, 0x6c,
+	0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_helloworld_helloworld_proto_rawDescOnce sync.Once
+	file_helloworld_helloworld_proto_rawDescData = file_helloworld_helloworld_proto_rawDesc
+)
+
+func file_helloworld_helloworld_proto_rawDescGZIP() []byte {
+	file_helloworld_helloworld_proto_rawDescOnce.Do(func() {
+		file_helloworld_helloworld_proto_rawDescData = protoimpl.X.CompressGZIP(file_helloworld_helloworld_proto_rawDescData)
+	})
+	return file_helloworld_helloworld_proto_rawDescData
+}
+
+var file_helloworld_helloworld_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_helloworld_helloworld_proto_goTypes = []interface{}{
+	(*HelloRequest)(nil), // 0: helloworld.HelloRequest
+	(*HelloReply)(nil),   // 1: helloworld.HelloReply
+}
+var file_helloworld_helloworld_proto_depIdxs = []int32{
+	0, // 0: helloworld.Greeter.SayHello:input_type -> helloworld.HelloRequest
+	1, // 1: helloworld.Greeter.SayHello:output_type -> helloworld.HelloReply
+	1, // [1:2] is the sub-list for method output_type
+	0, // [0:1] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_helloworld_helloworld_proto_init() }
+func file_helloworld_helloworld_proto_init() {
+	if File_helloworld_helloworld_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_helloworld_helloworld_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*HelloRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_helloworld_helloworld_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*HelloReply); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_helloworld_helloworld_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_helloworld_helloworld_proto_goTypes,
+		DependencyIndexes: file_helloworld_helloworld_proto_depIdxs,
+		MessageInfos:      file_helloworld_helloworld_proto_msgTypes,
+	}.Build()
+	File_helloworld_helloworld_proto = out.File
+	file_helloworld_helloworld_proto_rawDesc = nil
+	file_helloworld_helloworld_proto_goTypes = nil
+	file_helloworld_helloworld_proto_depIdxs = nil
+}

internal/testdata/helloworld/helloworld.proto

@@ -0,0 +1,27 @@
+syntax = "proto3";
+
+package helloworld;
+
+import "google/api/annotations.proto";
+
+option go_package = "github.com/go-kratos/kratos/v2/internal/testdata/helloworld";
+
+// The greeting service definition.
+service Greeter {
+  // Sends a greeting
+  rpc SayHello (HelloRequest) returns (HelloReply)  {
+        option (google.api.http) = {
+            get: "/helloworld/{name}",
+        };
+  }
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+  string name = 1;
+}
+
+// The response message containing the greetings
+message HelloReply {
+  string message = 1;
+}

internal/testdata/helloworld/helloworld_grpc.pb.go

@@ -0,0 +1,103 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+
+package helloworld
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// GreeterClient is the client API for Greeter service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type GreeterClient interface {
+	// Sends a greeting
+	SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error)
+}
+
+type greeterClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewGreeterClient(cc grpc.ClientConnInterface) GreeterClient {
+	return &greeterClient{cc}
+}
+
+func (c *greeterClient) SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) {
+	out := new(HelloReply)
+	err := c.cc.Invoke(ctx, "/helloworld.Greeter/SayHello", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// GreeterServer is the server API for Greeter service.
+// All implementations must embed UnimplementedGreeterServer
+// for forward compatibility
+type GreeterServer interface {
+	// Sends a greeting
+	SayHello(context.Context, *HelloRequest) (*HelloReply, error)
+	mustEmbedUnimplementedGreeterServer()
+}
+
+// UnimplementedGreeterServer must be embedded to have forward compatible implementations.
+type UnimplementedGreeterServer struct {
+}
+
+func (UnimplementedGreeterServer) SayHello(context.Context, *HelloRequest) (*HelloReply, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method SayHello not implemented")
+}
+func (UnimplementedGreeterServer) mustEmbedUnimplementedGreeterServer() {}
+
+// UnsafeGreeterServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to GreeterServer will
+// result in compilation errors.
+type UnsafeGreeterServer interface {
+	mustEmbedUnimplementedGreeterServer()
+}
+
+func RegisterGreeterServer(s grpc.ServiceRegistrar, srv GreeterServer) {
+	s.RegisterService(&Greeter_ServiceDesc, srv)
+}
+
+func _Greeter_SayHello_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HelloRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(GreeterServer).SayHello(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/helloworld.Greeter/SayHello",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(GreeterServer).SayHello(ctx, req.(*HelloRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// Greeter_ServiceDesc is the grpc.ServiceDesc for Greeter service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Greeter_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "helloworld.Greeter",
+	HandlerType: (*GreeterServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "SayHello",
+			Handler:    _Greeter_SayHello_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "helloworld/helloworld.proto",
+}

internal/testdata/helloworld/helloworld_http.pb.go

@@ -0,0 +1,74 @@
+// Code generated by protoc-gen-go-http. DO NOT EDIT.
+// versions:
+// protoc-gen-go-http v2.1.0
+
+package helloworld
+
+import (
+	context "context"
+	http "github.com/go-kratos/kratos/v2/transport/http"
+	binding "github.com/go-kratos/kratos/v2/transport/http/binding"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the kratos package it is being compiled against.
+var _ = new(context.Context)
+var _ = binding.EncodeURL
+
+const _ = http.SupportPackageIsVersion1
+
+type GreeterHTTPServer interface {
+	SayHello(context.Context, *HelloRequest) (*HelloReply, error)
+}
+
+func RegisterGreeterHTTPServer(s *http.Server, srv GreeterHTTPServer) {
+	r := s.Route("/")
+	r.GET("/helloworld/{name}", _Greeter_SayHello0_HTTP_Handler(srv))
+}
+
+func _Greeter_SayHello0_HTTP_Handler(srv GreeterHTTPServer) func(ctx http.Context) error {
+	return func(ctx http.Context) error {
+		var in HelloRequest
+		if err := ctx.BindQuery(&in); err != nil {
+			return err
+		}
+		if err := ctx.BindVars(&in); err != nil {
+			return err
+		}
+		http.SetOperation(ctx, "/helloworld.Greeter/SayHello")
+		h := ctx.Middleware(func(ctx context.Context, req interface{}) (interface{}, error) {
+			return srv.SayHello(ctx, req.(*HelloRequest))
+		})
+		out, err := h(ctx, &in)
+		if err != nil {
+			return err
+		}
+		reply := out.(*HelloReply)
+		return ctx.Result(200, reply)
+	}
+}
+
+type GreeterHTTPClient interface {
+	SayHello(ctx context.Context, req *HelloRequest, opts ...http.CallOption) (rsp *HelloReply, err error)
+}
+
+type GreeterHTTPClientImpl struct {
+	cc *http.Client
+}
+
+func NewGreeterHTTPClient(client *http.Client) GreeterHTTPClient {
+	return &GreeterHTTPClientImpl{client}
+}
+
+func (c *GreeterHTTPClientImpl) SayHello(ctx context.Context, in *HelloRequest, opts ...http.CallOption) (*HelloReply, error) {
+	var out HelloReply
+	pattern := "/helloworld/{name}"
+	path := binding.EncodeURL(pattern, in, true)
+	opts = append(opts, http.Operation("/helloworld.Greeter/SayHello"))
+	opts = append(opts, http.PathTemplate(pattern))
+	err := c.cc.Invoke(ctx, "GET", path, nil, &out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &out, err
+}

selector/p2c/p2c_test.go

@@ -56,12 +56,12 @@ func TestWrr3(t *testing.T) {
 		}()
 	}
 	group.Wait()
-	assert.Greater(t, count1, int64(2500))
-	assert.Less(t, count1, int64(3500))
-	assert.Greater(t, count2, int64(2500))
-	assert.Less(t, count2, int64(3500))
-	assert.Greater(t, count3, int64(2500))
-	assert.Less(t, count3, int64(3500))
+	assert.Greater(t, count1, int64(2000))
+	assert.Less(t, count1, int64(4000))
+	assert.Greater(t, count2, int64(2000))
+	assert.Less(t, count2, int64(4000))
+	assert.Greater(t, count3, int64(2000))
+	assert.Less(t, count3, int64(4000))
 }
 
 func TestEmpty(t *testing.T) {

transport/grpc/balancer_test.go

@@ -0,0 +1,29 @@
+package grpc
+
+import (
+	"testing"
+
+	"github.com/go-kratos/kratos/v2/selector/filter"
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/grpc/metadata"
+)
+
+func TestTrailer(t *testing.T) {
+	trailer := Trailer(metadata.New(map[string]string{"a": "b"}))
+	assert.Equal(t, "b", trailer.Get("a"))
+	assert.Equal(t, "", trailer.Get("3"))
+}
+
+func TestBalancerName(t *testing.T) {
+	o := &clientOptions{}
+
+	WithBalancerName("p2c")(o)
+	assert.Equal(t, "p2c", o.balancerName)
+}
+
+func TestFilters(t *testing.T) {
+	o := &clientOptions{}
+
+	WithSelectFilter(filter.Version("2"))(o)
+	assert.Equal(t, 1, len(o.filters))
+}

transport/grpc/server_test.go

@@ -3,26 +3,62 @@ package grpc
 import (
 	"context"
 	"crypto/tls"
+	"fmt"
 	"net/url"
 	"strings"
 	"testing"
 	"time"
 
+	"github.com/go-kratos/kratos/v2/errors"
+	pb "github.com/go-kratos/kratos/v2/internal/testdata/helloworld"
 	"github.com/go-kratos/kratos/v2/log"
 	"github.com/go-kratos/kratos/v2/middleware"
-	"google.golang.org/grpc"
+	"github.com/go-kratos/kratos/v2/transport"
 
 	"github.com/stretchr/testify/assert"
+	"google.golang.org/grpc"
 )
 
+// server is used to implement helloworld.GreeterServer.
+type server struct {
+	pb.UnimplementedGreeterServer
+}
+
+// SayHello implements helloworld.GreeterServer
+func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
+	if in.Name == "error" {
+		return nil, errors.BadRequest("custom_error", fmt.Sprintf("invalid argument %s", in.Name))
+	}
+	if in.Name == "panic" {
+		panic("server panic")
+	}
+	return &pb.HelloReply{Message: fmt.Sprintf("Hello %+v", in.Name)}, nil
+}
+
 type testKey struct{}
 
 func TestServer(t *testing.T) {
 	ctx := context.Background()
 	ctx = context.WithValue(ctx, testKey{}, "test")
-	srv := NewServer(Middleware([]middleware.Middleware{
-		func(middleware.Handler) middleware.Handler { return nil },
-	}...))
+	srv := NewServer(
+		Middleware(
+			func(handler middleware.Handler) middleware.Handler {
+				return func(ctx context.Context, req interface{}) (reply interface{}, err error) {
+					if tr, ok := transport.FromServerContext(ctx); ok {
+						if tr.ReplyHeader() != nil {
+							tr.ReplyHeader().Set("req_id", "3344")
+						}
+					}
+					return handler(ctx, req)
+				}
+			}),
+		UnaryInterceptor(func(ctx context.Context, req interface{},
+			info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
+			return handler(ctx, req)
+		}),
+		Options(grpc.InitialConnWindowSize(0)),
+	)
+	pb.RegisterGreeterServer(srv, &server{})
 
 	if e, err := srv.Endpoint(); err != nil || e == nil || strings.HasSuffix(e.Host, ":0") {
 		t.Fatal(e, err)
@@ -45,10 +81,31 @@ func testClient(t *testing.T, srv *Server) {
 		t.Fatal(err)
 	}
 	// new a gRPC client
-	conn, err := DialInsecure(context.Background(), WithEndpoint(u.Host))
+	conn, err := DialInsecure(context.Background(),
+		WithEndpoint(u.Host),
+		WithOptions(grpc.WithBlock()),
+		WithUnaryInterceptor(func(ctx context.Context, method string, req, reply interface{},
+			cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+			return invoker(ctx, method, req, reply, cc, opts...)
+		}),
+		WithMiddleware(func(handler middleware.Handler) middleware.Handler {
+			return func(ctx context.Context, req interface{}) (reply interface{}, err error) {
+				if tr, ok := transport.FromClientContext(ctx); ok {
+					header := tr.RequestHeader()
+					header.Set("x-md-trace", "2233")
+				}
+				return handler(ctx, req)
+			}
+		}),
+	)
 	if err != nil {
 		t.Fatal(err)
 	}
+	client := pb.NewGreeterClient(conn)
+	reply, err := client.SayHello(context.Background(), &pb.HelloRequest{Name: "kratos"})
+	fmt.Println(err)
+	assert.Nil(t, err)
+	assert.Equal(t, "Hello kratos", reply.Message)
 	_ = conn.Close()
 }
 
@@ -64,6 +121,10 @@ func TestAddress(t *testing.T) {
 	v := "abc"
 	Address(v)(o)
 	assert.Equal(t, v, o.address)
+
+	u, err := o.Endpoint()
+	assert.NotNil(t, err)
+	assert.Nil(t, u)
 }
 
 func TestTimeout(t *testing.T) {