1.修改离开会议接口，离开会议之后更改全局状态

@@ -544,6 +544,11 @@ client初始化成功之后，加入会议。
 				<td><p class="first last">未知错误</p></td>
 			</tr>
 
+			<tr class="row-even">
+				<td>ERR_SOCKET_DISCONNECT</td>
+				<td>20000</td>
+				<td><p class="first last">MCU断开连接，已经离开会议</p></td>
+			</tr>
 		</tbody>
 	</table>
 </div>
\ No newline at end of file

@@ -92,6 +92,7 @@ export default class MessageEntrance extends Emiter {
     //公开外部调用的方法
     this.init=this._init;
     this.joinClass=this._joinClass;
+    this.leaveClass=this._leaveClass;
     this.sendChatMsg=this._sendChatMsg;
     this.setDebugData=this._setDebugData;
     this.mcuClientStatus=this._mcuClientStatus;
@@ -167,7 +168,7 @@ export default class MessageEntrance extends Emiter {
     }
   }
   // 离开会议
-  leaveClass() {
+  _leaveClass() {
     if(_mcu){
       _mcu.leaveMCU();
       GlobalConfig.setCurrentStatus(GlobalConfig.statusCode_3);

@@ -80,6 +80,10 @@ class EverSocket extends Emiter {
     loger.log('WebSocket,Timers销毁');
     window.clearInterval(this.pingTimer);
     window.clearInterval(this.pongTimer);
+    if(this.websocket==null){
+      loger.log('WebSocket,Timers已经销毁');
+      return;
+    }
     this.websocket.onopen = undefined;
     this.websocket.onclose = undefined;
     this.websocket.onerror = undefined;

@@ -61,6 +61,7 @@ MessageTypes.MCU_ERROR ="mcuError";//MCU错误
 MessageTypes.ERR_NETWORK=10000;//网络错误
 MessageTypes.ERR_UNKNOWN=10001;//未知错误
 
+MessageTypes.ERR_SOCKET_DISCONNECT=20000;//MCU断开连接，已经离开会议
 
 //会议初始化失败的几种情况
 MessageTypes.ERR_CLASS_INIT_PAEAM=100;//初始化参数错误

@@ -153,6 +153,8 @@ class MCU extends Emiter {
     // for (let ape in this._apes) {
     //   this._apes[ape].stop();
     // }
+    loger.log('leaveMCU');
+    GlobalConfig.setCurrentStatus(GlobalConfig.statusCode_3)
     this._everSocket.end();
   }