diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..262666b
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module lume-grpc
+
+go 1.16
+
+require (
+	google.golang.org/grpc v1.39.0 // indirect
+	google.golang.org/protobuf v1.25.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..4498048
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,107 @@
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diff --git a/ping/ping.pb.go b/ping/ping.pb.go
new file mode 100644
index 0000000..8c93921
--- /dev/null
+++ b/ping/ping.pb.go
@@ -0,0 +1,228 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.14.0
+// source: ping/ping.proto
+
+package ping
+
+import (
+	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)
+)
+
+type PingRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Seq  uint32 `protobuf:"varint,1,opt,name=seq,proto3" json:"seq,omitempty"`
+	Data string `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *PingRequest) Reset() {
+	*x = PingRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ping_ping_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PingRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PingRequest) ProtoMessage() {}
+
+func (x *PingRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_ping_ping_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 PingRequest.ProtoReflect.Descriptor instead.
+func (*PingRequest) Descriptor() ([]byte, []int) {
+	return file_ping_ping_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *PingRequest) GetSeq() uint32 {
+	if x != nil {
+		return x.Seq
+	}
+	return 0
+}
+
+func (x *PingRequest) GetData() string {
+	if x != nil {
+		return x.Data
+	}
+	return ""
+}
+
+type PingResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Seq  uint32 `protobuf:"varint,1,opt,name=seq,proto3" json:"seq,omitempty"`
+	Data string `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *PingResponse) Reset() {
+	*x = PingResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ping_ping_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PingResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PingResponse) ProtoMessage() {}
+
+func (x *PingResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_ping_ping_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 PingResponse.ProtoReflect.Descriptor instead.
+func (*PingResponse) Descriptor() ([]byte, []int) {
+	return file_ping_ping_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *PingResponse) GetSeq() uint32 {
+	if x != nil {
+		return x.Seq
+	}
+	return 0
+}
+
+func (x *PingResponse) GetData() string {
+	if x != nil {
+		return x.Data
+	}
+	return ""
+}
+
+var File_ping_ping_proto protoreflect.FileDescriptor
+
+var file_ping_ping_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x70, 0x69, 0x6e, 0x67, 0x2f, 0x70, 0x69, 0x6e, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x12, 0x04, 0x70, 0x69, 0x6e, 0x67, 0x22, 0x33, 0x0a, 0x0b, 0x50, 0x69, 0x6e, 0x67, 0x52,
+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x10, 0x0a, 0x03, 0x73, 0x65, 0x71, 0x18, 0x01, 0x20,
+	0x01, 0x28, 0x0d, 0x52, 0x03, 0x73, 0x65, 0x71, 0x12, 0x12, 0x0a, 0x04, 0x64, 0x61, 0x74, 0x61,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x61, 0x74, 0x61, 0x22, 0x34, 0x0a, 0x0c,
+	0x50, 0x69, 0x6e, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x10, 0x0a, 0x03,
+	0x73, 0x65, 0x71, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x03, 0x73, 0x65, 0x71, 0x12, 0x12,
+	0x0a, 0x04, 0x64, 0x61, 0x74, 0x61, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x61,
+	0x74, 0x61, 0x32, 0x37, 0x0a, 0x04, 0x70, 0x69, 0x6e, 0x67, 0x12, 0x2f, 0x0a, 0x04, 0x50, 0x69,
+	0x6e, 0x67, 0x12, 0x11, 0x2e, 0x70, 0x69, 0x6e, 0x67, 0x2e, 0x50, 0x69, 0x6e, 0x67, 0x52, 0x65,
+	0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x12, 0x2e, 0x70, 0x69, 0x6e, 0x67, 0x2e, 0x50, 0x69, 0x6e,
+	0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x10, 0x5a, 0x0e, 0x6c,
+	0x75, 0x6d, 0x65, 0x2d, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x70, 0x69, 0x6e, 0x67, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_ping_ping_proto_rawDescOnce sync.Once
+	file_ping_ping_proto_rawDescData = file_ping_ping_proto_rawDesc
+)
+
+func file_ping_ping_proto_rawDescGZIP() []byte {
+	file_ping_ping_proto_rawDescOnce.Do(func() {
+		file_ping_ping_proto_rawDescData = protoimpl.X.CompressGZIP(file_ping_ping_proto_rawDescData)
+	})
+	return file_ping_ping_proto_rawDescData
+}
+
+var file_ping_ping_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_ping_ping_proto_goTypes = []interface{}{
+	(*PingRequest)(nil),  // 0: ping.PingRequest
+	(*PingResponse)(nil), // 1: ping.PingResponse
+}
+var file_ping_ping_proto_depIdxs = []int32{
+	0, // 0: ping.ping.Ping:input_type -> ping.PingRequest
+	1, // 1: ping.ping.Ping:output_type -> ping.PingResponse
+	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_ping_ping_proto_init() }
+func file_ping_ping_proto_init() {
+	if File_ping_ping_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_ping_ping_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PingRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ping_ping_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PingResponse); 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_ping_ping_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_ping_ping_proto_goTypes,
+		DependencyIndexes: file_ping_ping_proto_depIdxs,
+		MessageInfos:      file_ping_ping_proto_msgTypes,
+	}.Build()
+	File_ping_ping_proto = out.File
+	file_ping_ping_proto_rawDesc = nil
+	file_ping_ping_proto_goTypes = nil
+	file_ping_ping_proto_depIdxs = nil
+}
diff --git a/ping/ping.proto b/ping/ping.proto
new file mode 100644
index 0000000..f1a3d39
--- /dev/null
+++ b/ping/ping.proto
@@ -0,0 +1,19 @@
+syntax = "proto3";
+
+option go_package = "lume-grpc/ping";
+
+package ping;
+
+service ping {
+    rpc Ping(PingRequest) returns (PingResponse) {}
+}
+
+message PingRequest {
+    uint32 seq  = 1;
+    string data = 2;
+}
+
+message PingResponse {
+    uint32 seq  = 1;
+    string data = 2;
+}
diff --git a/ping/ping_grpc.pb.go b/ping/ping_grpc.pb.go
new file mode 100644
index 0000000..d4d590a
--- /dev/null
+++ b/ping/ping_grpc.pb.go
@@ -0,0 +1,101 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+
+package ping
+
+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
+
+// PingClient is the client API for Ping 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 PingClient interface {
+	Ping(ctx context.Context, in *PingRequest, opts ...grpc.CallOption) (*PingResponse, error)
+}
+
+type pingClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewPingClient(cc grpc.ClientConnInterface) PingClient {
+	return &pingClient{cc}
+}
+
+func (c *pingClient) Ping(ctx context.Context, in *PingRequest, opts ...grpc.CallOption) (*PingResponse, error) {
+	out := new(PingResponse)
+	err := c.cc.Invoke(ctx, "/ping.ping/Ping", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// PingServer is the server API for Ping service.
+// All implementations must embed UnimplementedPingServer
+// for forward compatibility
+type PingServer interface {
+	Ping(context.Context, *PingRequest) (*PingResponse, error)
+	mustEmbedUnimplementedPingServer()
+}
+
+// UnimplementedPingServer must be embedded to have forward compatible implementations.
+type UnimplementedPingServer struct {
+}
+
+func (UnimplementedPingServer) Ping(context.Context, *PingRequest) (*PingResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Ping not implemented")
+}
+func (UnimplementedPingServer) mustEmbedUnimplementedPingServer() {}
+
+// UnsafePingServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to PingServer will
+// result in compilation errors.
+type UnsafePingServer interface {
+	mustEmbedUnimplementedPingServer()
+}
+
+func RegisterPingServer(s grpc.ServiceRegistrar, srv PingServer) {
+	s.RegisterService(&Ping_ServiceDesc, srv)
+}
+
+func _Ping_Ping_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(PingRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PingServer).Ping(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/ping.ping/Ping",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PingServer).Ping(ctx, req.(*PingRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// Ping_ServiceDesc is the grpc.ServiceDesc for Ping service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Ping_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "ping.ping",
+	HandlerType: (*PingServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Ping",
+			Handler:    _Ping_Ping_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "ping/ping.proto",
+}
diff --git a/ping_client/main.go b/ping_client/main.go
new file mode 100644
index 0000000..eb71e7f
--- /dev/null
+++ b/ping_client/main.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	"google.golang.org/grpc"
+
+	pb "lume-grpc/ping"
+)
+
+const (
+	address = "localhost:50051"
+)
+
+func genPayload(s int) string {
+	var p string
+	var start int = 60
+	for i := start; i < (start + s); i++ {
+		p += string(i)
+	}
+	return p
+}
+
+func main() {
+	var i uint32
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+	defer cancel()
+
+	data := genPayload(64)
+	if len(os.Args) > 1 {
+		data = os.Args[1]
+	}
+	conn, err := grpc.DialContext(ctx, address, grpc.WithInsecure(), grpc.WithBlock())
+	if err != nil {
+		log.Fatalf("did not connect: %v", err)
+	}
+	defer conn.Close()
+	c := pb.NewPingClient(conn)
+
+	for i = 1; ; i++ {
+		rtt := time.Now()
+		ctx, cancel = context.WithTimeout(context.Background(), 10*time.Second)
+		r, err := c.Ping(ctx, &pb.PingRequest{Data: data, Seq: i})
+		if err != nil {
+			log.Printf("could not connect to: %v", err)
+			time.Sleep(1 * time.Second)
+			continue
+		}
+		// log.Printf("%d characters roundtrip to (%s): seq=%d time=%s", len(r.Data), address, r.Seq, time.Since(rtt))
+		fmt.Printf("%d bytes from %s: seq=%d time=%s\n", len(r.Data), address, r.Seq, time.Since(rtt))
+		//log.Printf("Received: %v", r.Data)
+		time.Sleep(1 * time.Second)
+	}
+}
diff --git a/ping_server/main.go b/ping_server/main.go
new file mode 100644
index 0000000..dcaf3ff
--- /dev/null
+++ b/ping_server/main.go
@@ -0,0 +1,48 @@
+package main
+
+import (
+	"context"
+	"log"
+	"net"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+
+	pb "lume-grpc/ping"
+)
+
+const (
+	port = ":50051"
+)
+
+type server struct {
+	pb.UnimplementedPingServer
+}
+
+func Reverse(s string) string {
+	runes := []rune(s)
+	for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
+		runes[i], runes[j] = runes[j], runes[i]
+	}
+	return string(runes)
+}
+
+func (s *server) Ping(ctx context.Context, req *pb.PingRequest) (*pb.PingResponse, error) {
+	log.Printf("Received: %v", req.Data)
+	return &pb.PingResponse{Data: Reverse(req.Data), Seq: req.Seq}, nil
+}
+
+func main() {
+	lis, err := net.Listen("tcp", port)
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+
+	s := grpc.NewServer()
+	pb.RegisterPingServer(s, &server{})
+	log.Printf("server listening at %v", lis.Addr())
+	reflection.Register(s)
+	if err := s.Serve(lis); err != nil {
+		log.Fatalf("failed to serve: %v", err)
+	}
+}