lan discovery in socket_cs

Signed-off-by: fufesou <shuanglongchen@yeah.net>

libs/hbb_common/protos/base_proto.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+package base;
+
+message DisplayInfo {
+  sint32 x = 1;
+  sint32 y = 2;
+  int32 width = 3;
+  int32 height = 4;
+  string name = 5;
+  bool online = 6;
+}
+
+message PeerInfo {
+  string username = 1;
+  string hostname = 2;
+  string platform = 3;
+  repeated DisplayInfo displays = 4;
+  int32 current_display = 5;
+  bool sas_enabled = 6;
+  string version = 7;
+}

libs/hbb_common/protos/discovery.proto

@@ -0,0 +1,10 @@
+syntax = "proto3";
+package discovery;
+
+import "base_proto.proto";
+
+message Discovery {
+  base.PeerInfo peer = 1;
+  /// response port for current listening port(udp for now)
+  int32 port = 2;
+}

libs/hbb_common/protos/message.proto

@@ -1,6 +1,8 @@
 syntax = "proto3";
 package hbb;
 
+import "base_proto.proto";
+
 message VP9 {
   bytes data = 1;
   bool key = 2;
@@ -25,15 +27,6 @@ message VideoFrame {
   }
 }
 
-message DisplayInfo {
-  sint32 x = 1;
-  sint32 y = 2;
-  int32 width = 3;
-  int32 height = 4;
-  string name = 5;
-  bool online = 6;
-}
-
 message PortForward {
   string host = 1;
   int32 port = 2;
@@ -58,20 +51,10 @@ message LoginRequest {
 
 message ChatMessage { string text = 1; }
 
-message PeerInfo {
-  string username = 1;
-  string hostname = 2;
-  string platform = 3;
-  repeated DisplayInfo displays = 4;
-  int32 current_display = 5;
-  bool sas_enabled = 6;
-  string version = 7;
-}
-
 message LoginResponse {
   oneof union {
     string error = 1;
-    PeerInfo peer_info = 2;
+    base.PeerInfo peer_info = 2;
   }
 }