diff --git a/.vscode/settings.json b/.vscode/settings.json
index b49ed61..dcb2521 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -4,5 +4,13 @@
         "CONFIG_PATH": "${workspaceFolder}/application.yaml"
     },
     "go.testEnvFile": "${workspaceFolder}/etc/unit_test.env",
-    "terminal.integrated.suggest.enabled": true
+    "terminal.integrated.suggest.enabled": true,
+    "protoc": {
+        "path": "/usr/local/bin/protoc",
+        "compile_on_save": false,
+        "options": [
+            "--proto_path=.",
+            "--proto_path=/usr/local/include",
+        ]
+    }
 }
\ No newline at end of file
diff --git a/skills/rpc/protobuf/README.md b/skills/rpc/protobuf/README.md
index bff814a..03fba08 100644
--- a/skills/rpc/protobuf/README.md
+++ b/skills/rpc/protobuf/README.md
@@ -10,6 +10,8 @@ type HelloService interface {
 + RPC方法的定义
 + PRC数据结构的定义
 
+安装vsocde的 proto语法高亮插件: vscode-proto3
+
 ## 插件安装
 
 ```sh
@@ -154,4 +156,11 @@ func (c *helloServiceClient) Hello(ctx context.Context, in *Request, opts ...grp
 
 
 
-## 其他服务 使用生成的client，调用grpc服务的方法
\ No newline at end of file
+## 其他服务 使用生成的client，调用grpc服务的方法
+
+
+## 包
+
+```sh
+protoc -I=. --go_out=. --go_opt=module="122.51.31.227/go-course/go18" skills/rpc/protobuf/app_service/interface.proto 
+```
\ No newline at end of file
diff --git a/skills/rpc/protobuf/app_service/interface.pb.go b/skills/rpc/protobuf/app_service/interface.pb.go
new file mode 100644
index 0000000..df37498
--- /dev/null
+++ b/skills/rpc/protobuf/app_service/interface.pb.go
@@ -0,0 +1,165 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.8
+// 	protoc        v6.32.0
+// source: skills/rpc/protobuf/app_service/interface.proto
+
+package app_service
+
+import (
+	reflect "reflect"
+	sync "sync"
+	unsafe "unsafe"
+
+	hello_service "122.51.31.227/go-course/go18/skills/rpc/protobuf/hello_service"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+)
+
+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 App struct {
+	state       protoimpl.MessageState `protogen:"open.v1"`
+	Id          string                 `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Name        string                 `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	Description string                 `protobuf:"bytes,3,opt,name=description,proto3" json:"description,omitempty"`
+	// 通过包名引用其他包里面定义
+	Request       *hello_service.Request  `protobuf:"bytes,4,opt,name=request,proto3" json:"request,omitempty"`
+	Response      *hello_service.Response `protobuf:"bytes,5,opt,name=response,proto3" json:"response,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *App) Reset() {
+	*x = App{}
+	mi := &file_skills_rpc_protobuf_app_service_interface_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *App) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*App) ProtoMessage() {}
+
+func (x *App) ProtoReflect() protoreflect.Message {
+	mi := &file_skills_rpc_protobuf_app_service_interface_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use App.ProtoReflect.Descriptor instead.
+func (*App) Descriptor() ([]byte, []int) {
+	return file_skills_rpc_protobuf_app_service_interface_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *App) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *App) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *App) GetDescription() string {
+	if x != nil {
+		return x.Description
+	}
+	return ""
+}
+
+func (x *App) GetRequest() *hello_service.Request {
+	if x != nil {
+		return x.Request
+	}
+	return nil
+}
+
+func (x *App) GetResponse() *hello_service.Response {
+	if x != nil {
+		return x.Response
+	}
+	return nil
+}
+
+var File_skills_rpc_protobuf_app_service_interface_proto protoreflect.FileDescriptor
+
+const file_skills_rpc_protobuf_app_service_interface_proto_rawDesc = "" +
+	"\n" +
+	"/skills/rpc/protobuf/app_service/interface.proto\x12\x03app\x1a1skills/rpc/protobuf/hello_service/interface.proto\"\xa2\x01\n" +
+	"\x03App\x12\x0e\n" +
+	"\x02id\x18\x01 \x01(\tR\x02id\x12\x12\n" +
+	"\x04name\x18\x02 \x01(\tR\x04name\x12 \n" +
+	"\vdescription\x18\x03 \x01(\tR\vdescription\x12(\n" +
+	"\arequest\x18\x04 \x01(\v2\x0e.hello.RequestR\arequest\x12+\n" +
+	"\bresponse\x18\x05 \x01(\v2\x0f.hello.ResponseR\bresponseB>Z<122.51.31.227/go-course/go18/skills/rpc/protobuf/app_serviceb\x06proto3"
+
+var (
+	file_skills_rpc_protobuf_app_service_interface_proto_rawDescOnce sync.Once
+	file_skills_rpc_protobuf_app_service_interface_proto_rawDescData []byte
+)
+
+func file_skills_rpc_protobuf_app_service_interface_proto_rawDescGZIP() []byte {
+	file_skills_rpc_protobuf_app_service_interface_proto_rawDescOnce.Do(func() {
+		file_skills_rpc_protobuf_app_service_interface_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_skills_rpc_protobuf_app_service_interface_proto_rawDesc), len(file_skills_rpc_protobuf_app_service_interface_proto_rawDesc)))
+	})
+	return file_skills_rpc_protobuf_app_service_interface_proto_rawDescData
+}
+
+var file_skills_rpc_protobuf_app_service_interface_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_skills_rpc_protobuf_app_service_interface_proto_goTypes = []any{
+	(*App)(nil),                    // 0: app.App
+	(*hello_service.Request)(nil),  // 1: hello.Request
+	(*hello_service.Response)(nil), // 2: hello.Response
+}
+var file_skills_rpc_protobuf_app_service_interface_proto_depIdxs = []int32{
+	1, // 0: app.App.request:type_name -> hello.Request
+	2, // 1: app.App.response:type_name -> hello.Response
+	2, // [2:2] is the sub-list for method output_type
+	2, // [2:2] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
+}
+
+func init() { file_skills_rpc_protobuf_app_service_interface_proto_init() }
+func file_skills_rpc_protobuf_app_service_interface_proto_init() {
+	if File_skills_rpc_protobuf_app_service_interface_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_skills_rpc_protobuf_app_service_interface_proto_rawDesc), len(file_skills_rpc_protobuf_app_service_interface_proto_rawDesc)),
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_skills_rpc_protobuf_app_service_interface_proto_goTypes,
+		DependencyIndexes: file_skills_rpc_protobuf_app_service_interface_proto_depIdxs,
+		MessageInfos:      file_skills_rpc_protobuf_app_service_interface_proto_msgTypes,
+	}.Build()
+	File_skills_rpc_protobuf_app_service_interface_proto = out.File
+	file_skills_rpc_protobuf_app_service_interface_proto_goTypes = nil
+	file_skills_rpc_protobuf_app_service_interface_proto_depIdxs = nil
+}
diff --git a/skills/rpc/protobuf/app_service/interface.proto b/skills/rpc/protobuf/app_service/interface.proto
new file mode 100644
index 0000000..8b9da25
--- /dev/null
+++ b/skills/rpc/protobuf/app_service/interface.proto
@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package app;
+option go_package="122.51.31.227/go-course/go18/skills/rpc/protobuf/app_service";
+
+// 导入包
+import "skills/rpc/protobuf/hello_service/interface.proto";
+
+message App {
+  string id = 1;
+  string name = 2;
+  string description = 3;
+  // 通过包名引用其他包里面定义
+  hello.Request request = 4;
+  hello.Response response = 5;
+}
\ No newline at end of file
diff --git a/skills/rpc/protobuf/hello_service/interface.pb.go b/skills/rpc/protobuf/hello_service/interface.pb.go
index fdf9921..0e121db 100644
--- a/skills/rpc/protobuf/hello_service/interface.pb.go
+++ b/skills/rpc/protobuf/hello_service/interface.pb.go
@@ -9,6 +9,7 @@ package hello_service
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	anypb "google.golang.org/protobuf/types/known/anypb"
 	reflect "reflect"
 	sync "sync"
 	unsafe "unsafe"
@@ -21,9 +22,72 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type Corpus int32
+
+const (
+	Corpus_UNIVERSAL Corpus = 0
+	Corpus_WEB       Corpus = 1
+	Corpus_IMAGES    Corpus = 2
+	Corpus_LOCAL     Corpus = 3
+	Corpus_NEWS      Corpus = 4
+	Corpus_PRODUCTS  Corpus = 5
+	Corpus_VIDEO     Corpus = 6
+)
+
+// Enum value maps for Corpus.
+var (
+	Corpus_name = map[int32]string{
+		0: "UNIVERSAL",
+		1: "WEB",
+		2: "IMAGES",
+		3: "LOCAL",
+		4: "NEWS",
+		5: "PRODUCTS",
+		6: "VIDEO",
+	}
+	Corpus_value = map[string]int32{
+		"UNIVERSAL": 0,
+		"WEB":       1,
+		"IMAGES":    2,
+		"LOCAL":     3,
+		"NEWS":      4,
+		"PRODUCTS":  5,
+		"VIDEO":     6,
+	}
+)
+
+func (x Corpus) Enum() *Corpus {
+	p := new(Corpus)
+	*p = x
+	return p
+}
+
+func (x Corpus) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Corpus) Descriptor() protoreflect.EnumDescriptor {
+	return file_skills_rpc_protobuf_hello_service_interface_proto_enumTypes[0].Descriptor()
+}
+
+func (Corpus) Type() protoreflect.EnumType {
+	return &file_skills_rpc_protobuf_hello_service_interface_proto_enumTypes[0]
+}
+
+func (x Corpus) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Corpus.Descriptor instead.
+func (Corpus) EnumDescriptor() ([]byte, []int) {
+	return file_skills_rpc_protobuf_hello_service_interface_proto_rawDescGZIP(), []int{0}
+}
+
 type Request struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	Value         string                 `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+	state protoimpl.MessageState `protogen:"open.v1"`
+	Value string                 `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+	// map
+	Extras        map[string]string `protobuf:"bytes,2,rep,name=extras,proto3" json:"extras,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
 	unknownFields protoimpl.UnknownFields
 	sizeCache     protoimpl.SizeCache
 }
@@ -65,6 +129,66 @@ func (x *Request) GetValue() string {
 	return ""
 }
 
+func (x *Request) GetExtras() map[string]string {
+	if x != nil {
+		return x.Extras
+	}
+	return nil
+}
+
+type RequestSet struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	Total int64                  `protobuf:"varint,1,opt,name=total,proto3" json:"total,omitempty"`
+	// repeated 来描述一个数组
+	Items         []*Request `protobuf:"bytes,2,rep,name=items,proto3" json:"items,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *RequestSet) Reset() {
+	*x = RequestSet{}
+	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *RequestSet) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RequestSet) ProtoMessage() {}
+
+func (x *RequestSet) ProtoReflect() protoreflect.Message {
+	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RequestSet.ProtoReflect.Descriptor instead.
+func (*RequestSet) Descriptor() ([]byte, []int) {
+	return file_skills_rpc_protobuf_hello_service_interface_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *RequestSet) GetTotal() int64 {
+	if x != nil {
+		return x.Total
+	}
+	return 0
+}
+
+func (x *RequestSet) GetItems() []*Request {
+	if x != nil {
+		return x.Items
+	}
+	return nil
+}
+
 type Response struct {
 	state         protoimpl.MessageState `protogen:"open.v1"`
 	Value         string                 `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
@@ -74,7 +198,7 @@ type Response struct {
 
 func (x *Response) Reset() {
 	*x = Response{}
-	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[1]
+	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[2]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -86,7 +210,7 @@ func (x *Response) String() string {
 func (*Response) ProtoMessage() {}
 
 func (x *Response) ProtoReflect() protoreflect.Message {
-	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[1]
+	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[2]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -99,7 +223,7 @@ func (x *Response) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Response.ProtoReflect.Descriptor instead.
 func (*Response) Descriptor() ([]byte, []int) {
-	return file_skills_rpc_protobuf_hello_service_interface_proto_rawDescGZIP(), []int{1}
+	return file_skills_rpc_protobuf_hello_service_interface_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Response) GetValue() string {
@@ -109,17 +233,90 @@ func (x *Response) GetValue() string {
 	return ""
 }
 
+type ErrorStatus struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Message       string                 `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"`
+	Details       []*anypb.Any           `protobuf:"bytes,2,rep,name=details,proto3" json:"details,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *ErrorStatus) Reset() {
+	*x = ErrorStatus{}
+	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ErrorStatus) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ErrorStatus) ProtoMessage() {}
+
+func (x *ErrorStatus) ProtoReflect() protoreflect.Message {
+	mi := &file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes[3]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ErrorStatus.ProtoReflect.Descriptor instead.
+func (*ErrorStatus) Descriptor() ([]byte, []int) {
+	return file_skills_rpc_protobuf_hello_service_interface_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *ErrorStatus) GetMessage() string {
+	if x != nil {
+		return x.Message
+	}
+	return ""
+}
+
+func (x *ErrorStatus) GetDetails() []*anypb.Any {
+	if x != nil {
+		return x.Details
+	}
+	return nil
+}
+
 var File_skills_rpc_protobuf_hello_service_interface_proto protoreflect.FileDescriptor
 
 const file_skills_rpc_protobuf_hello_service_interface_proto_rawDesc = "" +
 	"\n" +
-	"1skills/rpc/protobuf/hello_service/interface.proto\x12\x05hello\"\x1f\n" +
+	"1skills/rpc/protobuf/hello_service/interface.proto\x12\x05hello\x1a\x19google/protobuf/any.proto\"\x8e\x01\n" +
 	"\aRequest\x12\x14\n" +
-	"\x05value\x18\x01 \x01(\tR\x05value\" \n" +
+	"\x05value\x18\x01 \x01(\tR\x05value\x122\n" +
+	"\x06extras\x18\x02 \x03(\v2\x1a.hello.Request.ExtrasEntryR\x06extras\x1a9\n" +
+	"\vExtrasEntry\x12\x10\n" +
+	"\x03key\x18\x01 \x01(\tR\x03key\x12\x14\n" +
+	"\x05value\x18\x02 \x01(\tR\x05value:\x028\x01\"H\n" +
+	"\n" +
+	"RequestSet\x12\x14\n" +
+	"\x05total\x18\x01 \x01(\x03R\x05total\x12$\n" +
+	"\x05items\x18\x02 \x03(\v2\x0e.hello.RequestR\x05items\" \n" +
 	"\bResponse\x12\x14\n" +
-	"\x05value\x18\x01 \x01(\tR\x05value28\n" +
+	"\x05value\x18\x01 \x01(\tR\x05value\"W\n" +
+	"\vErrorStatus\x12\x18\n" +
+	"\amessage\x18\x01 \x01(\tR\amessage\x12.\n" +
+	"\adetails\x18\x02 \x03(\v2\x14.google.protobuf.AnyR\adetails*Z\n" +
+	"\x06Corpus\x12\r\n" +
+	"\tUNIVERSAL\x10\x00\x12\a\n" +
+	"\x03WEB\x10\x01\x12\n" +
+	"\n" +
+	"\x06IMAGES\x10\x02\x12\t\n" +
+	"\x05LOCAL\x10\x03\x12\b\n" +
+	"\x04NEWS\x10\x04\x12\f\n" +
+	"\bPRODUCTS\x10\x05\x12\t\n" +
+	"\x05VIDEO\x10\x062j\n" +
 	"\fHelloService\x12(\n" +
-	"\x05Hello\x12\x0e.hello.Request\x1a\x0f.hello.ResponseB@Z>122.51.31.227/go-course/go18/skills/rpc/protobuf/hello_serviceb\x06proto3"
+	"\x05Hello\x12\x0e.hello.Request\x1a\x0f.hello.Response\x120\n" +
+	"\aChannel\x12\x0e.hello.Request\x1a\x0f.hello.Response\"\x00(\x010\x01B@Z>122.51.31.227/go-course/go18/skills/rpc/protobuf/hello_serviceb\x06proto3"
 
 var (
 	file_skills_rpc_protobuf_hello_service_interface_proto_rawDescOnce sync.Once
@@ -133,19 +330,30 @@ func file_skills_rpc_protobuf_hello_service_interface_proto_rawDescGZIP() []byte
 	return file_skills_rpc_protobuf_hello_service_interface_proto_rawDescData
 }
 
-var file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_skills_rpc_protobuf_hello_service_interface_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_skills_rpc_protobuf_hello_service_interface_proto_goTypes = []any{
-	(*Request)(nil),  // 0: hello.Request
-	(*Response)(nil), // 1: hello.Response
+	(Corpus)(0),         // 0: hello.Corpus
+	(*Request)(nil),     // 1: hello.Request
+	(*RequestSet)(nil),  // 2: hello.RequestSet
+	(*Response)(nil),    // 3: hello.Response
+	(*ErrorStatus)(nil), // 4: hello.ErrorStatus
+	nil,                 // 5: hello.Request.ExtrasEntry
+	(*anypb.Any)(nil),   // 6: google.protobuf.Any
 }
 var file_skills_rpc_protobuf_hello_service_interface_proto_depIdxs = []int32{
-	0, // 0: hello.HelloService.Hello:input_type -> hello.Request
-	1, // 1: hello.HelloService.Hello:output_type -> hello.Response
-	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
+	5, // 0: hello.Request.extras:type_name -> hello.Request.ExtrasEntry
+	1, // 1: hello.RequestSet.items:type_name -> hello.Request
+	6, // 2: hello.ErrorStatus.details:type_name -> google.protobuf.Any
+	1, // 3: hello.HelloService.Hello:input_type -> hello.Request
+	1, // 4: hello.HelloService.Channel:input_type -> hello.Request
+	3, // 5: hello.HelloService.Hello:output_type -> hello.Response
+	3, // 6: hello.HelloService.Channel:output_type -> hello.Response
+	5, // [5:7] is the sub-list for method output_type
+	3, // [3:5] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
 }
 
 func init() { file_skills_rpc_protobuf_hello_service_interface_proto_init() }
@@ -158,13 +366,14 @@ func file_skills_rpc_protobuf_hello_service_interface_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_skills_rpc_protobuf_hello_service_interface_proto_rawDesc), len(file_skills_rpc_protobuf_hello_service_interface_proto_rawDesc)),
-			NumEnums:      0,
-			NumMessages:   2,
+			NumEnums:      1,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
 		GoTypes:           file_skills_rpc_protobuf_hello_service_interface_proto_goTypes,
 		DependencyIndexes: file_skills_rpc_protobuf_hello_service_interface_proto_depIdxs,
+		EnumInfos:         file_skills_rpc_protobuf_hello_service_interface_proto_enumTypes,
 		MessageInfos:      file_skills_rpc_protobuf_hello_service_interface_proto_msgTypes,
 	}.Build()
 	File_skills_rpc_protobuf_hello_service_interface_proto = out.File
diff --git a/skills/rpc/protobuf/hello_service/interface.proto b/skills/rpc/protobuf/hello_service/interface.proto
index e8bab9e..52be78c 100644
--- a/skills/rpc/protobuf/hello_service/interface.proto
+++ b/skills/rpc/protobuf/hello_service/interface.proto
@@ -3,6 +3,9 @@ syntax = "proto3";
 package hello;
 option go_package="122.51.31.227/go-course/go18/skills/rpc/protobuf/hello_service";
 
+// 这里是应用其他的proto文件, 后面会讲 ipmort用法
+import "google/protobuf/any.proto";
+
 // The HelloService service definition.
 service HelloService {
     // rpc 声明接口
@@ -13,8 +16,31 @@ service HelloService {
 
 message Request {
     string value = 1;
+    // map
+    map<string, string> extras = 2;
+}
+
+message RequestSet {
+    int64 total = 1;
+    // repeated 来描述一个数组
+    repeated Request items = 2;
 }
 
 message Response {
     string value = 1;
+}
+
+enum Corpus {
+    UNIVERSAL = 0;
+    WEB = 1;
+    IMAGES = 2;
+    LOCAL = 3;
+    NEWS = 4;
+    PRODUCTS = 5;
+    VIDEO = 6;
+}
+
+message ErrorStatus {
+  string message = 1;
+  repeated google.protobuf.Any details = 2;
 }
\ No newline at end of file
diff --git a/skills/rpc/protobuf/hello_service/interface_test.go b/skills/rpc/protobuf/hello_service/interface_test.go
new file mode 100644
index 0000000..d637ae1
--- /dev/null
+++ b/skills/rpc/protobuf/hello_service/interface_test.go
@@ -0,0 +1,35 @@
+package hello_service_test
+
+import (
+	"testing"
+
+	"122.51.31.227/go-course/go18/skills/rpc/protobuf/hello_service"
+	"google.golang.org/protobuf/types/known/anypb"
+)
+
+func TestAny(t *testing.T) {
+	status := hello_service.ErrorStatus{
+		Details: []*anypb.Any{},
+	}
+
+	d1 := hello_service.Request{Value: "test"}
+	any1, err := anypb.New(&d1)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	d2 := hello_service.Response{Value: "test"}
+	any2, err := anypb.New(&d2)
+	if err != nil {
+		t.Fatal(err)
+	}
+	status.Details = append(status.Details, any1, any2)
+
+	t.Log(status)
+
+	target := hello_service.Request{}
+	if err := status.Details[0].UnmarshalTo(&target); err != nil {
+		t.Fatal(err)
+	}
+	t.Log(target.Value)
+}