支持多人同时聊天,支持私聊,支持真实IP用户间传送文件,服务器端采用完成端口模型完成，客户端采用WSAAynscSelect模型，底层采用xml对传输协议进行了包装 ！-Over the same time support chat, support private chat, support the real IP to transfer files between users, server-side model with the completion port to complete, the client uses WSAAynscSelect model, the underlying transmission protocol using xml on the packaging!