The connection attribute of the Socket class often does not accurately determine if the network is connected, and the following code can solve this problem.
/// /// Is /// Public Virtual Bool Connected {get {Try {// Check if the status of the socket is readable if (m_socket.connected && m_socket.poll (0, SelectMode .Selectread) {byte [] abyte = new byte [1]; // Because the TCP / IP protocol cannot accurately determine if the network can be used //, the PEEK parameter specifies that the read character will not be in the buffer. Remove // If readable, the connection is indicated by IF (M_Socket.Receive (Abyte, 0, 1, SocketFlags.peek)! = 0) Return True; Close ("Disconnected."); Return False;}} catch (Socketexception e) {onException (e);} return m_socket.connected;}}
