一个VB编写的网络端口监听程序,收到连接请求会自动发信息,能多次接受连接,方便VB,VC等其他语言网络编程时测试-Network port listener written in VB, received a connection request will automatically be sent the information, many times to accept the connection, to facilitate other languages ​ ​ such as VB, VC network programming to test