利用TCPclient TCPserver控件，进行简单的数据收发，传送。可以利用它实现广域网的聊天。-Using TCPclient TCPserver control, a simple data transceiver, transmission. Can use it to achieve wide area network chat.

delphi的indy中tcpclient和tcpserver的即时通讯Demo，发现很不错。多学习局域网聊天很有帮助-The indy delphi tcpserver in tcpclient and instant messaging Demo, found very good. LAN chat and more helpful to learn