说明：  实时聊天应用程序是一种客户端-服务器系统，旨在通过网络在用户之间进行无缝通信。利用套接字编程和线程，应用程序支持并发连接，允许用户参与实时消息传递、私人对话、文件共享等。
(The Real-Time Chat Application is a client-server system designed for seamless communication between users over a network. Utilizing socket programming and threading, the application enables concurrent connections, allowing users to engage in real-time messaging, private conversations, file sharing etc.)