采用VC＋＋，软件完成的功能主TCP通讯。服务器与客户端，客户端发送什么服务器回发接收到的数据，发送的数据可以自己选择-Using VC++, the software functions of the completion of the main TCP communications. Server and the client, the client what the server sends back the data received, send the data to choose t

服务端客户端源码，VC++语言，适用于SIM800、SIM900等型号(source code for server client .VC++ language, applicable to SIM800, SIM900 and other models)