QT怎么断开与客户端的连接

1、QAbstractSocket::RemoteHostClosedError   1  The remote host closed the connection. Note that the client socket (i.e., this socket) will be closed after the remote close notification has been sent

2、远程主机关闭连接，注解：client socket 将送出通知后关闭

3、下面为实现代码