Introduction - If you have any usage issues, please Google them yourself
Multithreading: Requirements: 1, server and client communications, the server can receive multiple clients. 2, the server sends a message, all clients can receive. 3, the client sends information, only the server can be received. 4, the server sends " bye" when including the server program and the end of all client programs, the client sends " bye" , the client end (of course, the server corresponding thread also ends). 5, the server to the client in the output message to the client' s IP with the corresponding output together.