message type

lib/im/SocketClient.dart

@@ -208,7 +208,7 @@ class SocketClient {
     }
   }
 
-  Future<Message> sendMessage(String toId, String content, {String attach, int msgType, replyId}) async {
+  Future<Message> sendMessage(String toId, String content, {String attach, int msgType = 1, replyId}) async {
 
     MsgType type = MsgType.values[msgType];
     Uint8List data;