利用TCP协议实现端口扫描，通过Socket连接对方的计算机的某端口，试图和该端口建立连接，如果建立成功，说明对方开发了该端口，如果失败，说明对方没有开放该端口。-Protocol implementation using TCP port scan, through the Socket to connect the other side of a computer port, and try to establish a connection to the port, if the build succeeds, the other developed the port, if it fails to illustrate the other side did not open the port.