简单的纯正TCP客户端程序，配置好TCP服务端的IP地址和端口号，即可按照纯正的TCP模式建立连接。我测试的时候用的是TCP串口调试助手，模拟TCP服务端-Simple pure TCP client program, configure the TCP server IP address and port number, you can in accordance with the pure TCP model to establish a connection. I tested with the TCP serial debugging assistant, analog TCP server.