diff --git a/include/transport/protocol.proto b/include/transport/protocol.proto
index 929c02b79056edac6765ec74f2d5d78975c4b25a..4475b70764d336804eac13580ef9918afe359ac1 100644
--- a/include/transport/protocol.proto
+++ b/include/transport/protocol.proto
@@ -69,6 +69,7 @@ message ConversationMessage {
 	required string message = 3;
 	optional string nickname = 4;
 	optional string xhtml = 5;
+	optional string timestamp = 6;
 }
 
 message Room {
@@ -78,6 +79,11 @@ message Room {
 	optional string password = 4;
 }
 
+message RoomList {
+	repeated string room = 1;
+	repeated string name = 2;
+}
+
 message Participant {
 	required string userName = 1;
 	required string room = 2;
@@ -159,6 +165,7 @@ message WrapperMessage {
 		TYPE_EXIT					= 29;
 		TYPE_BACKEND_CONFIG			= 30;
 		TYPE_QUERY					= 31;
+		TYPE_ROOM_LIST				= 32;
 	}
 	required Type type = 1;
 	optional bytes payload = 2;