TCP协议模拟，用JAVA图形界面实现，模拟了在复杂信道下的丢包等问题。,TCP protocol simulation, implementation using JAVA graphical interface, analog channel in the complex under the packet loss and so on.

编写一个TCP Socket程序，采用SWT图形化的界面实现，类似于简易的QQ.-This is a java program based on TCP Socket, it uses the swt to realize the UI, and it is similar to an easy QQ.