实现客户服务器之间的通信，可以对通信双方的即时信息采用AES加密，同时双方可以进行文件传输，发送发对传输的文件采用AES加密，接收方对接收到的数据解密获取明文。-To realize the communication between the client and server, instant information communication using AES encryption, and the two sides can transfer files, send to transfe