Moving to unprivileged port.

client/client/client.go

@@ -7,7 +7,7 @@ import (
 	"io"
 	"net"
 
-	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/proto"
 )
 
 type Client struct {
@@ -37,7 +37,7 @@ func (c *Client) SendProtoData(coords *pb.ClientCoordinates) {
 
 	data, err := proto.Marshal(coords)
 	if err != nil {
-		fmt.Println("We fucked the serialization. ", err)
+		fmt.Println("Couldn't serialize. ", err)
 		return
 	}
 
@@ -47,43 +47,23 @@ func (c *Client) SendProtoData(coords *pb.ClientCoordinates) {
 	binary.BigEndian.PutUint32(buf[:4], length)
 	copy(buf[4:], data)
 
+	c.SendBuffer(c.conn, buf)
+}
+
+func (c *Client) SendBuffer(conn net.Conn, buf []byte) {
 	// Ensure complete write
 	totalWritten := 0
 	for totalWritten < len(buf) {
-		n, err := c.conn.Write(buf[totalWritten:])
+		n, err := conn.Write(buf[totalWritten:])
 		if err != nil {
 			fmt.Printf("Error writing to connection: %v\n", err)
 			return
 		}
 		totalWritten += n
 	}
-
 }
 
-func (c *Client) SendData(msg string) {
+func (c *Client) ReadData(callback func(*pb.ServerEnvelope)) {
-	// Send input to the server
-	//fmt.Fprintf(c.conn, msg)
-	_, err := c.conn.Write([]byte(msg))
-	if err != nil {
-		fmt.Println("Error writing to connection:", err)
-		return
-	}
-}
-
-func (c *Client) ReadData(callback func(*pb.AllClients)) {
-
-	/*
-		for {
-			message, err := bufio.NewReader(c.conn).ReadString('\n')
-			if err != nil {
-				fmt.Println("Error reading from server:", err)
-				return
-			}
-
-			if callback != nil {
-				callback(message)
-			}
-		}*/
 
 	for {
 		lengthBuf := make([]byte, 4)
@@ -102,15 +82,15 @@ func (c *Client) ReadData(callback func(*pb.AllClients)) {
 			return
 		}
 
-		var allclients pb.AllClients
+		var envelope pb.ServerEnvelope
-		err = proto.Unmarshal(data, &allclients)
+		err = proto.Unmarshal(data, &envelope)
 		if err != nil {
-			fmt.Println("Error deserializing: ", err)
+			fmt.Println("Couldn't deserialize envelope : ", err)
 			return
 		}
 
 		if callback != nil {
-			callback(&allclients)
+			callback(&envelope)
 		}
 
 	}
@@ -129,3 +109,18 @@ func (c *Client) Disconnect() {
 	c.conn.Close()
 	c.connected = false
 }
+
+func (c *Client) SendMessage(msg *pb.ClientEnvelope) {
+	data, err := proto.Marshal(msg)
+	if err != nil {
+		fmt.Println("error serializing: ", err)
+		return
+	}
+
+	length := len(data)
+	buf := make([]byte, length+4)
+	binary.BigEndian.PutUint32(buf[:4], uint32(length))
+	copy(buf[4:], data)
+
+	c.SendBuffer(c.conn, buf)
+}

client/game/game.go

@@ -6,6 +6,7 @@ import (
 	"client/fonts"
 	"client/gamedata"
 	"client/pb"
+	"fmt"
 	"maps"
 	"sync"
 	"time"
@@ -27,6 +28,7 @@ func init() {
 }
 
 type ClientData struct {
+	Id       int
 	Address  string
 	Name     string
 	Position gamedata.Coordinates
@@ -35,6 +37,7 @@ type ClientData struct {
 type Game struct {
 	name   string
 	blocky *elements.Block
+	gameId int
 
 	//players map[client.Identity]
 
@@ -56,6 +59,8 @@ func NewGame() *Game {
 		name:       namelist[rand.Intn(len(namelist))],
 	}
 	g.clients = make(map[string]ClientData)
+
+	//g.gameId = g.gameclient.GetIdentity()
 	go g.gameclient.ReadData(g.HandleServerData)
 	return g
 }
@@ -81,7 +86,15 @@ func (g *Game) Update() error {
 				},
 			}
 
-			g.gameclient.SendProtoData(cd)
+			envelope := &pb.ClientEnvelope{
+				Payload: &pb.ClientEnvelope_Coordinates{
+					Coordinates: cd,
+				},
+			}
+
+			g.gameclient.SendMessage(envelope)
+
+			//g.gameclient.SendProtoData(cd)
 			/*
 				cd := *client.ClientData{
 					Name: g.name,
@@ -140,14 +153,16 @@ func (g *Game) Layout(outsideWidth, outsideHeight int) (screenwidth, screenheigh
 	return screenWidth, screenHeight
 }
 
-func (g *Game) HandleServerData(allclients *pb.AllClients) {
+func (g *Game) HandleServerData(envelope *pb.ServerEnvelope) {
 
-	for _, client := range allclients.Clients {
+	switch payload := envelope.Payload.(type) {
-		//fmt.Println(client.Coordinates.X)
+	case *pb.ServerEnvelope_Broadcast:
+		//fmt.Println("Here comes the broadcast!")
 
-		localaddr := g.gameclient.GetLocalAddr()
+		for _, client := range payload.Broadcast.Clients {
-		if client.Address != localaddr {
+			if client.Id != int32(g.gameId) {
 				update := ClientData{
+					Id:      int(client.Id),
 					Address: client.Address,
 					Name:    client.Name,
 					Position: gamedata.Coordinates{
@@ -162,44 +177,10 @@ func (g *Game) HandleServerData(allclients *pb.AllClients) {
 			}
 		}
 
-	//log.Println(data)
+	case *pb.ServerEnvelope_Identity:
-	/*
+		fmt.Println("Server is trying to give us our id.")
-
+		g.gameId = int(payload.Identity.Id)
-		raw := data[1 : len(data)-1]
-		clientinfo := strings.Split(raw, ";")
-		for _, info := range clientinfo {
-			subdata := strings.Split(info, ",")
-
-			if len(subdata) == 4 {
-
-				if g.gameclient.GetLocalAddr() != subdata[0] {
-
-					x, err := strconv.Atoi(subdata[2])
-					if err != nil {
-						x = 0
 	}
-
-					y, err := strconv.Atoi(subdata[3])
-					if err != nil {
-						y = 0
-					}
-
-					update := ClientData{
-						Address: subdata[0],
-						Name:    subdata[1],
-						Position: gamedata.Coordinates{
-							X: float64(x),
-							Y: float64(y),
-						},
-					}
-
-					g.mu.Lock()
-					g.clients[update.Address] = update
-					g.mu.Unlock()
-				}
-			}
-		}
-	*/
 }
 
 func (g *Game) CleanupClients() {

client/pb/clientdata.pb.go

@@ -20,6 +20,55 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type MessageType int32
+
+const (
+	MessageType_MSG_TYPE_BROADCAST   MessageType = 0
+	MessageType_MSG_TYPE_IDENTITY    MessageType = 1
+	MessageType_MSG_TYPE_COORDINATES MessageType = 2
+)
+
+// Enum value maps for MessageType.
+var (
+	MessageType_name = map[int32]string{
+		0: "MSG_TYPE_BROADCAST",
+		1: "MSG_TYPE_IDENTITY",
+		2: "MSG_TYPE_COORDINATES",
+	}
+	MessageType_value = map[string]int32{
+		"MSG_TYPE_BROADCAST":   0,
+		"MSG_TYPE_IDENTITY":    1,
+		"MSG_TYPE_COORDINATES": 2,
+	}
+)
+
+func (x MessageType) Enum() *MessageType {
+	p := new(MessageType)
+	*p = x
+	return p
+}
+
+func (x MessageType) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (MessageType) Descriptor() protoreflect.EnumDescriptor {
+	return file_clientdata_proto_enumTypes[0].Descriptor()
+}
+
+func (MessageType) Type() protoreflect.EnumType {
+	return &file_clientdata_proto_enumTypes[0]
+}
+
+func (x MessageType) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use MessageType.Descriptor instead.
+func (MessageType) EnumDescriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{0}
+}
+
 type Coordinates struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -78,9 +127,10 @@ type ClientData struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Address     string       `protobuf:"bytes,1,opt,name=Address,proto3" json:"Address,omitempty"`
+	Id          int32        `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty"`
-	Name        string       `protobuf:"bytes,2,opt,name=Name,proto3" json:"Name,omitempty"`
+	Address     string       `protobuf:"bytes,2,opt,name=Address,proto3" json:"Address,omitempty"`
-	Coordinates *Coordinates `protobuf:"bytes,3,opt,name=coordinates,proto3" json:"coordinates,omitempty"`
+	Name        string       `protobuf:"bytes,3,opt,name=Name,proto3" json:"Name,omitempty"`
+	Coordinates *Coordinates `protobuf:"bytes,4,opt,name=coordinates,proto3" json:"coordinates,omitempty"`
 }
 
 func (x *ClientData) Reset() {
@@ -113,6 +163,13 @@ func (*ClientData) Descriptor() ([]byte, []int) {
 	return file_clientdata_proto_rawDescGZIP(), []int{1}
 }
 
+func (x *ClientData) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
 func (x *ClientData) GetAddress() string {
 	if x != nil {
 		return x.Address
@@ -232,6 +289,195 @@ func (x *AllClients) GetClients() []*ClientData {
 	return nil
 }
 
+type ClientIdentity struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int32 `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty"`
+}
+
+func (x *ClientIdentity) Reset() {
+	*x = ClientIdentity{}
+	mi := &file_clientdata_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ClientIdentity) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ClientIdentity) ProtoMessage() {}
+
+func (x *ClientIdentity) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[4]
+	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 ClientIdentity.ProtoReflect.Descriptor instead.
+func (*ClientIdentity) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *ClientIdentity) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type ClientEnvelope struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Payload:
+	//
+	//	*ClientEnvelope_Coordinates
+	Payload isClientEnvelope_Payload `protobuf_oneof:"Payload"`
+}
+
+func (x *ClientEnvelope) Reset() {
+	*x = ClientEnvelope{}
+	mi := &file_clientdata_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ClientEnvelope) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ClientEnvelope) ProtoMessage() {}
+
+func (x *ClientEnvelope) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[5]
+	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 ClientEnvelope.ProtoReflect.Descriptor instead.
+func (*ClientEnvelope) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{5}
+}
+
+func (m *ClientEnvelope) GetPayload() isClientEnvelope_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (x *ClientEnvelope) GetCoordinates() *ClientCoordinates {
+	if x, ok := x.GetPayload().(*ClientEnvelope_Coordinates); ok {
+		return x.Coordinates
+	}
+	return nil
+}
+
+type isClientEnvelope_Payload interface {
+	isClientEnvelope_Payload()
+}
+
+type ClientEnvelope_Coordinates struct {
+	Coordinates *ClientCoordinates `protobuf:"bytes,1,opt,name=coordinates,proto3,oneof"`
+}
+
+func (*ClientEnvelope_Coordinates) isClientEnvelope_Payload() {}
+
+type ServerEnvelope struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Payload:
+	//
+	//	*ServerEnvelope_Identity
+	//	*ServerEnvelope_Broadcast
+	Payload isServerEnvelope_Payload `protobuf_oneof:"Payload"`
+}
+
+func (x *ServerEnvelope) Reset() {
+	*x = ServerEnvelope{}
+	mi := &file_clientdata_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ServerEnvelope) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ServerEnvelope) ProtoMessage() {}
+
+func (x *ServerEnvelope) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[6]
+	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 ServerEnvelope.ProtoReflect.Descriptor instead.
+func (*ServerEnvelope) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{6}
+}
+
+func (m *ServerEnvelope) GetPayload() isServerEnvelope_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (x *ServerEnvelope) GetIdentity() *ClientIdentity {
+	if x, ok := x.GetPayload().(*ServerEnvelope_Identity); ok {
+		return x.Identity
+	}
+	return nil
+}
+
+func (x *ServerEnvelope) GetBroadcast() *AllClients {
+	if x, ok := x.GetPayload().(*ServerEnvelope_Broadcast); ok {
+		return x.Broadcast
+	}
+	return nil
+}
+
+type isServerEnvelope_Payload interface {
+	isServerEnvelope_Payload()
+}
+
+type ServerEnvelope_Identity struct {
+	Identity *ClientIdentity `protobuf:"bytes,1,opt,name=identity,proto3,oneof"`
+}
+
+type ServerEnvelope_Broadcast struct {
+	Broadcast *AllClients `protobuf:"bytes,2,opt,name=broadcast,proto3,oneof"`
+}
+
+func (*ServerEnvelope_Identity) isServerEnvelope_Payload() {}
+
+func (*ServerEnvelope_Broadcast) isServerEnvelope_Payload() {}
+
 var File_clientdata_proto protoreflect.FileDescriptor
 
 var file_clientdata_proto_rawDesc = []byte{
@@ -239,11 +485,12 @@ var file_clientdata_proto_rawDesc = []byte{
 	0x74, 0x6f, 0x12, 0x04, 0x6d, 0x61, 0x69, 0x6e, 0x22, 0x29, 0x0a, 0x0b, 0x43, 0x6f, 0x6f, 0x72,
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+	0x52, 0x01, 0x59, 0x22, 0x7f, 0x0a, 0x0a, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x44, 0x61, 0x74,
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+	0x33, 0x0a, 0x0b, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e, 0x61, 0x74, 0x65, 0x73, 0x18, 0x04,
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@@ -255,8 +502,30 @@ var file_clientdata_proto_rawDesc = []byte{
 	0x65, 0x73, 0x22, 0x38, 0x0a, 0x0a, 0x41, 0x6c, 0x6c, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73,
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+	0x65, 0x6e, 0x74, 0x73, 0x48, 0x00, 0x52, 0x09, 0x62, 0x72, 0x6f, 0x61, 0x64, 0x63, 0x61, 0x73,
+	0x74, 0x42, 0x09, 0x0a, 0x07, 0x50, 0x61, 0x79, 0x6c, 0x6f, 0x61, 0x64, 0x2a, 0x56, 0x0a, 0x0b,
+	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x54, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x12, 0x4d,
+	0x53, 0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f, 0x42, 0x52, 0x4f, 0x41, 0x44, 0x43, 0x41, 0x53,
+	0x54, 0x10, 0x00, 0x12, 0x15, 0x0a, 0x11, 0x4d, 0x53, 0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f,
+	0x49, 0x44, 0x45, 0x4e, 0x54, 0x49, 0x54, 0x59, 0x10, 0x01, 0x12, 0x18, 0x0a, 0x14, 0x4d, 0x53,
+	0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f, 0x43, 0x4f, 0x4f, 0x52, 0x44, 0x49, 0x4e, 0x41, 0x54,
+	0x45, 0x53, 0x10, 0x02, 0x42, 0x06, 0x5a, 0x04, 0x2e, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -271,22 +540,30 @@ func file_clientdata_proto_rawDescGZIP() []byte {
 	return file_clientdata_proto_rawDescData
 }
 
-var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_clientdata_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_clientdata_proto_goTypes = []any{
-	(*Coordinates)(nil),       // 0: main.Coordinates
+	(MessageType)(0),          // 0: main.MessageType
-	(*ClientData)(nil),        // 1: main.ClientData
+	(*Coordinates)(nil),       // 1: main.Coordinates
-	(*ClientCoordinates)(nil), // 2: main.ClientCoordinates
+	(*ClientData)(nil),        // 2: main.ClientData
-	(*AllClients)(nil),        // 3: main.AllClients
+	(*ClientCoordinates)(nil), // 3: main.ClientCoordinates
+	(*AllClients)(nil),        // 4: main.AllClients
+	(*ClientIdentity)(nil),    // 5: main.ClientIdentity
+	(*ClientEnvelope)(nil),    // 6: main.ClientEnvelope
+	(*ServerEnvelope)(nil),    // 7: main.ServerEnvelope
 }
 var file_clientdata_proto_depIdxs = []int32{
-	0, // 0: main.ClientData.coordinates:type_name -> main.Coordinates
+	1, // 0: main.ClientData.coordinates:type_name -> main.Coordinates
-	0, // 1: main.ClientCoordinates.coordinates:type_name -> main.Coordinates
+	1, // 1: main.ClientCoordinates.coordinates:type_name -> main.Coordinates
-	1, // 2: main.AllClients.Clients:type_name -> main.ClientData
+	2, // 2: main.AllClients.Clients:type_name -> main.ClientData
-	3, // [3:3] is the sub-list for method output_type
+	3, // 3: main.ClientEnvelope.coordinates:type_name -> main.ClientCoordinates
-	3, // [3:3] is the sub-list for method input_type
+	5, // 4: main.ServerEnvelope.identity:type_name -> main.ClientIdentity
-	3, // [3:3] is the sub-list for extension type_name
+	4, // 5: main.ServerEnvelope.broadcast:type_name -> main.AllClients
-	3, // [3:3] is the sub-list for extension extendee
+	6, // [6:6] is the sub-list for method output_type
-	0, // [0:3] is the sub-list for field type_name
+	6, // [6:6] is the sub-list for method input_type
+	6, // [6:6] is the sub-list for extension type_name
+	6, // [6:6] is the sub-list for extension extendee
+	0, // [0:6] is the sub-list for field type_name
 }
 
 func init() { file_clientdata_proto_init() }
@@ -294,18 +571,26 @@ func file_clientdata_proto_init() {
 	if File_clientdata_proto != nil {
 		return
 	}
+	file_clientdata_proto_msgTypes[5].OneofWrappers = []any{
+		(*ClientEnvelope_Coordinates)(nil),
+	}
+	file_clientdata_proto_msgTypes[6].OneofWrappers = []any{
+		(*ServerEnvelope_Identity)(nil),
+		(*ServerEnvelope_Broadcast)(nil),
+	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_clientdata_proto_rawDesc,
-			NumEnums:      0,
+			NumEnums:      1,
-			NumMessages:   4,
+			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_clientdata_proto_goTypes,
 		DependencyIndexes: file_clientdata_proto_depIdxs,
+		EnumInfos:         file_clientdata_proto_enumTypes,
 		MessageInfos:      file_clientdata_proto_msgTypes,
 	}.Build()
 	File_clientdata_proto = out.File

server/clientdata.proto

@@ -10,9 +10,10 @@ message Coordinates {
 }
 
 message ClientData {
-    string Address = 1;
+    int32 Id = 1;
-    string Name = 2;
+    string Address = 2;
-    Coordinates coordinates = 3;
+    string Name = 3;
+    Coordinates coordinates = 4;
 }
 
 message ClientCoordinates {
@@ -23,3 +24,7 @@ message ClientCoordinates {
 message AllClients{
     repeated ClientData Clients = 1;
 }
+
+message ClientIdentity{
+    int32 Id = 1;
+}

server/main.go

@@ -8,6 +8,6 @@ import (
 func main() {
 	fmt.Println("Server v0.04")
 	server := server.NewServer()
-	server.Start(501)
+	server.Start(5001)
 
 }

server/pb/clientdata.pb.go

@@ -20,6 +20,55 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type MessageType int32
+
+const (
+	MessageType_MSG_TYPE_BROADCAST   MessageType = 0
+	MessageType_MSG_TYPE_IDENTITY    MessageType = 1
+	MessageType_MSG_TYPE_COORDINATES MessageType = 2
+)
+
+// Enum value maps for MessageType.
+var (
+	MessageType_name = map[int32]string{
+		0: "MSG_TYPE_BROADCAST",
+		1: "MSG_TYPE_IDENTITY",
+		2: "MSG_TYPE_COORDINATES",
+	}
+	MessageType_value = map[string]int32{
+		"MSG_TYPE_BROADCAST":   0,
+		"MSG_TYPE_IDENTITY":    1,
+		"MSG_TYPE_COORDINATES": 2,
+	}
+)
+
+func (x MessageType) Enum() *MessageType {
+	p := new(MessageType)
+	*p = x
+	return p
+}
+
+func (x MessageType) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (MessageType) Descriptor() protoreflect.EnumDescriptor {
+	return file_clientdata_proto_enumTypes[0].Descriptor()
+}
+
+func (MessageType) Type() protoreflect.EnumType {
+	return &file_clientdata_proto_enumTypes[0]
+}
+
+func (x MessageType) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use MessageType.Descriptor instead.
+func (MessageType) EnumDescriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{0}
+}
+
 type Coordinates struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -78,9 +127,10 @@ type ClientData struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Address     string       `protobuf:"bytes,1,opt,name=Address,proto3" json:"Address,omitempty"`
+	Id          int32        `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty"`
-	Name        string       `protobuf:"bytes,2,opt,name=Name,proto3" json:"Name,omitempty"`
+	Address     string       `protobuf:"bytes,2,opt,name=Address,proto3" json:"Address,omitempty"`
-	Coordinates *Coordinates `protobuf:"bytes,3,opt,name=coordinates,proto3" json:"coordinates,omitempty"`
+	Name        string       `protobuf:"bytes,3,opt,name=Name,proto3" json:"Name,omitempty"`
+	Coordinates *Coordinates `protobuf:"bytes,4,opt,name=coordinates,proto3" json:"coordinates,omitempty"`
 }
 
 func (x *ClientData) Reset() {
@@ -113,6 +163,13 @@ func (*ClientData) Descriptor() ([]byte, []int) {
 	return file_clientdata_proto_rawDescGZIP(), []int{1}
 }
 
+func (x *ClientData) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
 func (x *ClientData) GetAddress() string {
 	if x != nil {
 		return x.Address
@@ -232,6 +289,195 @@ func (x *AllClients) GetClients() []*ClientData {
 	return nil
 }
 
+type ClientIdentity struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int32 `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty"`
+}
+
+func (x *ClientIdentity) Reset() {
+	*x = ClientIdentity{}
+	mi := &file_clientdata_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ClientIdentity) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ClientIdentity) ProtoMessage() {}
+
+func (x *ClientIdentity) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[4]
+	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 ClientIdentity.ProtoReflect.Descriptor instead.
+func (*ClientIdentity) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *ClientIdentity) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type ClientEnvelope struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Payload:
+	//
+	//	*ClientEnvelope_Coordinates
+	Payload isClientEnvelope_Payload `protobuf_oneof:"Payload"`
+}
+
+func (x *ClientEnvelope) Reset() {
+	*x = ClientEnvelope{}
+	mi := &file_clientdata_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ClientEnvelope) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ClientEnvelope) ProtoMessage() {}
+
+func (x *ClientEnvelope) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[5]
+	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 ClientEnvelope.ProtoReflect.Descriptor instead.
+func (*ClientEnvelope) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{5}
+}
+
+func (m *ClientEnvelope) GetPayload() isClientEnvelope_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (x *ClientEnvelope) GetCoordinates() *ClientCoordinates {
+	if x, ok := x.GetPayload().(*ClientEnvelope_Coordinates); ok {
+		return x.Coordinates
+	}
+	return nil
+}
+
+type isClientEnvelope_Payload interface {
+	isClientEnvelope_Payload()
+}
+
+type ClientEnvelope_Coordinates struct {
+	Coordinates *ClientCoordinates `protobuf:"bytes,1,opt,name=coordinates,proto3,oneof"`
+}
+
+func (*ClientEnvelope_Coordinates) isClientEnvelope_Payload() {}
+
+type ServerEnvelope struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Payload:
+	//
+	//	*ServerEnvelope_Identity
+	//	*ServerEnvelope_Broadcast
+	Payload isServerEnvelope_Payload `protobuf_oneof:"Payload"`
+}
+
+func (x *ServerEnvelope) Reset() {
+	*x = ServerEnvelope{}
+	mi := &file_clientdata_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *ServerEnvelope) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ServerEnvelope) ProtoMessage() {}
+
+func (x *ServerEnvelope) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[6]
+	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 ServerEnvelope.ProtoReflect.Descriptor instead.
+func (*ServerEnvelope) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{6}
+}
+
+func (m *ServerEnvelope) GetPayload() isServerEnvelope_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (x *ServerEnvelope) GetIdentity() *ClientIdentity {
+	if x, ok := x.GetPayload().(*ServerEnvelope_Identity); ok {
+		return x.Identity
+	}
+	return nil
+}
+
+func (x *ServerEnvelope) GetBroadcast() *AllClients {
+	if x, ok := x.GetPayload().(*ServerEnvelope_Broadcast); ok {
+		return x.Broadcast
+	}
+	return nil
+}
+
+type isServerEnvelope_Payload interface {
+	isServerEnvelope_Payload()
+}
+
+type ServerEnvelope_Identity struct {
+	Identity *ClientIdentity `protobuf:"bytes,1,opt,name=identity,proto3,oneof"`
+}
+
+type ServerEnvelope_Broadcast struct {
+	Broadcast *AllClients `protobuf:"bytes,2,opt,name=broadcast,proto3,oneof"`
+}
+
+func (*ServerEnvelope_Identity) isServerEnvelope_Payload() {}
+
+func (*ServerEnvelope_Broadcast) isServerEnvelope_Payload() {}
+
 var File_clientdata_proto protoreflect.FileDescriptor
 
 var file_clientdata_proto_rawDesc = []byte{
@@ -239,11 +485,12 @@ var file_clientdata_proto_rawDesc = []byte{
 	0x74, 0x6f, 0x12, 0x04, 0x6d, 0x61, 0x69, 0x6e, 0x22, 0x29, 0x0a, 0x0b, 0x43, 0x6f, 0x6f, 0x72,
 	0x64, 0x69, 0x6e, 0x61, 0x74, 0x65, 0x73, 0x12, 0x0c, 0x0a, 0x01, 0x58, 0x18, 0x01, 0x20, 0x01,
 	0x28, 0x01, 0x52, 0x01, 0x58, 0x12, 0x0c, 0x0a, 0x01, 0x59, 0x18, 0x02, 0x20, 0x01, 0x28, 0x01,
-	0x52, 0x01, 0x59, 0x22, 0x6f, 0x0a, 0x0a, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x44, 0x61, 0x74,
+	0x52, 0x01, 0x59, 0x22, 0x7f, 0x0a, 0x0a, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x44, 0x61, 0x74,
-	0x61, 0x12, 0x18, 0x0a, 0x07, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18, 0x01, 0x20, 0x01,
+	0x61, 0x12, 0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x49,
+	0x64, 0x12, 0x18, 0x0a, 0x07, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18, 0x02, 0x20, 0x01,
 	0x28, 0x09, 0x52, 0x07, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x12, 0x12, 0x0a, 0x04, 0x4e,
-	0x61, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x12,
+	0x61, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x12,
-	0x33, 0x0a, 0x0b, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e, 0x61, 0x74, 0x65, 0x73, 0x18, 0x03,
+	0x33, 0x0a, 0x0b, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e, 0x61, 0x74, 0x65, 0x73, 0x18, 0x04,
 	0x20, 0x01, 0x28, 0x0b, 0x32, 0x11, 0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e, 0x43, 0x6f, 0x6f, 0x72,
 	0x64, 0x69, 0x6e, 0x61, 0x74, 0x65, 0x73, 0x52, 0x0b, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e,
 	0x61, 0x74, 0x65, 0x73, 0x22, 0x5c, 0x0a, 0x11, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x43, 0x6f,
@@ -255,8 +502,30 @@ var file_clientdata_proto_rawDesc = []byte{
 	0x65, 0x73, 0x22, 0x38, 0x0a, 0x0a, 0x41, 0x6c, 0x6c, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73,
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+	0x61, 0x74, 0x61, 0x52, 0x07, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x22, 0x20, 0x0a, 0x0e,
-	0x2e, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
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+	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x54, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x12, 0x4d,
+	0x53, 0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f, 0x42, 0x52, 0x4f, 0x41, 0x44, 0x43, 0x41, 0x53,
+	0x54, 0x10, 0x00, 0x12, 0x15, 0x0a, 0x11, 0x4d, 0x53, 0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f,
+	0x49, 0x44, 0x45, 0x4e, 0x54, 0x49, 0x54, 0x59, 0x10, 0x01, 0x12, 0x18, 0x0a, 0x14, 0x4d, 0x53,
+	0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f, 0x43, 0x4f, 0x4f, 0x52, 0x44, 0x49, 0x4e, 0x41, 0x54,
+	0x45, 0x53, 0x10, 0x02, 0x42, 0x06, 0x5a, 0x04, 0x2e, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -271,22 +540,30 @@ func file_clientdata_proto_rawDescGZIP() []byte {
 	return file_clientdata_proto_rawDescData
 }
 
-var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_clientdata_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_clientdata_proto_goTypes = []any{
-	(*Coordinates)(nil),       // 0: main.Coordinates
+	(MessageType)(0),          // 0: main.MessageType
-	(*ClientData)(nil),        // 1: main.ClientData
+	(*Coordinates)(nil),       // 1: main.Coordinates
-	(*ClientCoordinates)(nil), // 2: main.ClientCoordinates
+	(*ClientData)(nil),        // 2: main.ClientData
-	(*AllClients)(nil),        // 3: main.AllClients
+	(*ClientCoordinates)(nil), // 3: main.ClientCoordinates
+	(*AllClients)(nil),        // 4: main.AllClients
+	(*ClientIdentity)(nil),    // 5: main.ClientIdentity
+	(*ClientEnvelope)(nil),    // 6: main.ClientEnvelope
+	(*ServerEnvelope)(nil),    // 7: main.ServerEnvelope
 }
 var file_clientdata_proto_depIdxs = []int32{
-	0, // 0: main.ClientData.coordinates:type_name -> main.Coordinates
+	1, // 0: main.ClientData.coordinates:type_name -> main.Coordinates
-	0, // 1: main.ClientCoordinates.coordinates:type_name -> main.Coordinates
+	1, // 1: main.ClientCoordinates.coordinates:type_name -> main.Coordinates
-	1, // 2: main.AllClients.Clients:type_name -> main.ClientData
+	2, // 2: main.AllClients.Clients:type_name -> main.ClientData
-	3, // [3:3] is the sub-list for method output_type
+	3, // 3: main.ClientEnvelope.coordinates:type_name -> main.ClientCoordinates
-	3, // [3:3] is the sub-list for method input_type
+	5, // 4: main.ServerEnvelope.identity:type_name -> main.ClientIdentity
-	3, // [3:3] is the sub-list for extension type_name
+	4, // 5: main.ServerEnvelope.broadcast:type_name -> main.AllClients
-	3, // [3:3] is the sub-list for extension extendee
+	6, // [6:6] is the sub-list for method output_type
-	0, // [0:3] is the sub-list for field type_name
+	6, // [6:6] is the sub-list for method input_type
+	6, // [6:6] is the sub-list for extension type_name
+	6, // [6:6] is the sub-list for extension extendee
+	0, // [0:6] is the sub-list for field type_name
 }
 
 func init() { file_clientdata_proto_init() }
@@ -294,18 +571,26 @@ func file_clientdata_proto_init() {
 	if File_clientdata_proto != nil {
 		return
 	}
+	file_clientdata_proto_msgTypes[5].OneofWrappers = []any{
+		(*ClientEnvelope_Coordinates)(nil),
+	}
+	file_clientdata_proto_msgTypes[6].OneofWrappers = []any{
+		(*ServerEnvelope_Identity)(nil),
+		(*ServerEnvelope_Broadcast)(nil),
+	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_clientdata_proto_rawDesc,
-			NumEnums:      0,
+			NumEnums:      1,
-			NumMessages:   4,
+			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_clientdata_proto_goTypes,
 		DependencyIndexes: file_clientdata_proto_depIdxs,
+		EnumInfos:         file_clientdata_proto_enumTypes,
 		MessageInfos:      file_clientdata_proto_msgTypes,
 	}.Build()
 	File_clientdata_proto = out.File

server/server/server.go

@@ -15,12 +15,14 @@ import (
 )
 
 type ClientData struct {
+	Id       int
 	Address  string
 	Name     string
 	Position gamedata.Coordinates
 }
 
 type Server struct {
+	generatorId int
 	//clientlist map[net.Conn]string
 	clientlist map[net.Conn]ClientData
 	mu         sync.Mutex
@@ -51,11 +53,15 @@ func (s *Server) Start(port int) {
 			continue
 		}
 		log.Println("New connection " + conn.RemoteAddr().String())
-		go s.HandleClient(conn)
+
+		//increment the client count by one
+		s.generatorId++
+
+		go s.HandleClient(conn, s.generatorId)
 	}
 }
 
-func (s *Server) HandleClient(conn net.Conn) {
+func (s *Server) HandleClient(conn net.Conn, id int) {
 
 	//remove client from list upon disconnection
 	defer func() {
@@ -66,15 +72,8 @@ func (s *Server) HandleClient(conn net.Conn) {
 		conn.Close()
 	}()
 
-	//create the outline of client data, so far we know only
+	//before we add the client to the clientlist, let's send them their unique id first
-	//their addr, then add it to our client list
+	s.SendClientIdentity(conn, id)
-	clientdata := ClientData{
-		Address: conn.RemoteAddr().String(),
-	}
-	s.mu.Lock()
-	//s.clientlist[conn] = conn.RemoteAddr().String()
-	s.clientlist[conn] = clientdata
-	s.mu.Unlock()
 
 	for {
 		// Read data from the client
@@ -83,7 +82,11 @@ func (s *Server) HandleClient(conn net.Conn) {
 		lengthBuf := make([]byte, 4)
 		_, err := io.ReadFull(conn, lengthBuf)
 		if err != nil {
+			if err == io.EOF {
+				fmt.Println("client closed connection")
+			} else {
 				fmt.Println("failed to read length prefix: ", err)
+			}
 			return
 		}
 
@@ -97,62 +100,28 @@ func (s *Server) HandleClient(conn net.Conn) {
 			return
 		}
 
-		// Deserialize the protobuf data
+		var clientenvelope pb.ClientEnvelope
-		var coords pb.ClientCoordinates
+		err = proto.Unmarshal(data, &clientenvelope)
-		err = proto.Unmarshal(data, &coords)
 		if err != nil {
 			fmt.Println("failed to deserialize: ", err)
 			return
 		}
 
-		fmt.Println(coords.Name)
+		switch payload := clientenvelope.Payload.(type) {
-
+		case *pb.ClientEnvelope_Coordinates:
 			cd := ClientData{
+				Id:       id,
 				Address:  conn.RemoteAddr().String(),
-			Name:     coords.Name,
+				Name:     payload.Coordinates.Name,
-			Position: gamedata.Coordinates{X: coords.Coordinates.X, Y: coords.Coordinates.Y},
+				Position: gamedata.Coordinates{X: payload.Coordinates.Coordinates.X, Y: payload.Coordinates.Coordinates.Y},
-		}
-
-		s.mu.Lock()
-		s.clientlist[conn] = cd
-		s.mu.Unlock()
-
-		/*
-			data, err := bufio.NewReader(conn).ReadString('\n')
-			if err != nil {
-				return // Exit the Goroutine when the client disconnects
-			}
-		*/
-		/*
-			fmt.Println("Received:", string(data))
-			data = data[:len(data)-1]
-			//s.BroadcastMessage(conn, string(data))
-
-			//now we update our information with their data:
-			serverinfo := strings.Split(string(data), ",")
-			if len(serverinfo) == 3 {
-
-				x, err := strconv.Atoi(serverinfo[1])
-				if err != nil {
-					x = 0
-				}
-
-				y, err := strconv.Atoi(serverinfo[2])
-				if err != nil {
-					y = 0
-				}
-
-				cd := ClientData{
-					Address:  conn.RemoteAddr().String(),
-					Name:     serverinfo[0],
-					Position: gamedata.Coordinates{X: float64(x), Y: float64(y)},
 			}
 
+			//update the client list
 			s.mu.Lock()
 			s.clientlist[conn] = cd
 			s.mu.Unlock()
 		}
-		*/
+
 	}
 
 }
@@ -177,43 +146,18 @@ func (s *Server) ManageBroadcast() {
 
 		broadcastmsg := s.BuildBroadcastMessage()
 
-		data, err := proto.Marshal(broadcastmsg)
+		envelope := &pb.ServerEnvelope{
-		if err != nil {
+			Payload: &pb.ServerEnvelope_Broadcast{
-			fmt.Println("Error serializing the broadcastmsg: ", err)
+				Broadcast: broadcastmsg,
-			return
+			},
 		}
 
-		length := uint32(len(data))
-		buf := make([]byte, 4+len(data))
-		binary.BigEndian.PutUint32(buf[:4], length)
-		copy(buf[4:], data)
-
 		s.mu.Lock()
-		for client, clientinfo := range s.clientlist {
+		for client := range s.clientlist {
-			// Ensure complete write
+			s.SendMessage(client, envelope)
-			totalWritten := 0
-			for totalWritten < len(buf) {
-				n, err := client.Write(buf[totalWritten:])
-				if err != nil {
-					fmt.Printf("Error writing to connection: %s %v\n", err, clientinfo.Address)
-					return
-				}
-				totalWritten += n
-			}
 		}
 		s.mu.Unlock()
 
-		/*
-			s.mu.Lock()
-			for client, data := range s.clientlist {
-				_, err := client.Write([]byte(broadcastmsg))
-				if err != nil {
-					fmt.Println("Error sending message to ", data.Address, ": ", err)
-				}
-			}
-			s.mu.Unlock()
-			//fmt.Println("Broadcasting:: ", broadcastmsg)
-		*/
 		time.Sleep(time.Millisecond * 30)
 	}
 }
@@ -226,6 +170,7 @@ func (s *Server) BuildBroadcastMessage() *pb.AllClients {
 
 	for _, data := range s.clientlist {
 		clientdata := &pb.ClientData{
+			Id:      int32(data.Id),
 			Address: data.Address,
 			Name:    data.Name,
 			Coordinates: &pb.Coordinates{
@@ -243,3 +188,46 @@ func (s *Server) BuildBroadcastMessage() *pb.AllClients {
 func (s *Server) Disconnect() {
 
 }
+
+func (s *Server) SendMessage(conn net.Conn, details *pb.ServerEnvelope) {
+	data, err := proto.Marshal(details)
+	if err != nil {
+		fmt.Println("error serializing msg details: ", err)
+		return
+	}
+
+	//prepend message length
+	length := len(data)
+	buf := make([]byte, 4+length)
+	binary.BigEndian.PutUint32(buf[:4], uint32(length))
+	copy(buf[4:], data)
+
+	s.SendBuffer(conn, buf)
+}
+
+func (s *Server) SendBuffer(conn net.Conn, buf []byte) {
+	//write until entire buffer transmitted
+	totalWritten := 0
+	for totalWritten < len(buf) {
+		n, err := conn.Write(buf[totalWritten:])
+		if err != nil {
+			fmt.Println("error writing to connection ", err)
+			return
+		}
+		totalWritten += n
+	}
+}
+
+func (s *Server) SendClientIdentity(conn net.Conn, id int) {
+	identifier := &pb.ClientIdentity{
+		Id: int32(id),
+	}
+
+	envelope := &pb.ServerEnvelope{
+		Payload: &pb.ServerEnvelope_Identity{
+			Identity: identifier,
+		},
+	}
+
+	s.SendMessage(conn, envelope)
+}