Introduction - If you have any usage issues, please Google them yourself
First of all registered users and registered users sign up to be finished, exit the server, a continuous log after restart, the user presence information server under c: \ user_info.txt, first registration, the user will automatically create the file server The main achievement of the software functions are: the full realization of network, registered users, login authentication, group chat, private chat, online list, stealth. Programming idea is the main server to client only, client to client