TCP客户端（java）没有从TCP服务器（C＃）接收消息

I have a GUI TCP server written in C# which listens in 4444 port and a GUI java client which connects to 4444 port. I can send message from client to server and server side text field is set with message but when I send message from server to client no message is shown in the client's text field(also no result in console). Need help.I have a GUI TCP server written in C# which lis