Introduction - If you have any usage issues, please Google them yourself
1 Run the program before you set the IP address of the server, the client program settings- "Server IP settings, you can change the IP address for a specific server, otherwise the program will not run properly
2 Run the server program, the server will automatically run to the local IP address and the default port number on listening. This procedure can be implemented in a simple local area network communication, but only send data to the server, then the server sends the client to the specified data. On this basis, we can make changes to the program, so that every user on the LAN can chat.