．编制一个类似QQ的即时聊天程序，该程序使用面向连接的Socket通信机制。整个程序分成服务器端和客户端两部分，通信双方能够互相发送文字进行简单的聊天，最后双方都可以输入quit结束对话。-. The preparation of a similar QQ instant messaging program that use a connection-oriented Socket communication mechanism. The entire program is divided into server and client in two parts, each communicating parties can send simple text chat, and finally both sides can enter quit to exit the dialog.