it s a good book about Erlang programing language, which is mainly focused on telecommunication systems, but today these requirements are applicable to a large number of applications, and Erlang is used in applications as divergent as distributed

用QT4实现多用户聊天局域网，里面包括server端client端，源码奉上。- Multi-user chat with QT4 LAN, which includes server-side client to source offer.

基于Texas Instruments ZigBee聊天助手的完整功能代码-Based on the Texas Instruments ZigBee chat helper full function code