一对控制台下的TCP通信程序的客户端和服务器端，然后双方要能够相互发送和反馈信息进行无限次连续通信，直到其中一方发送表示结束通信的“end”字符串，然后接收方也返回一个“end”，双方结束通信。-The client and server side of the console under the TCP communication program, and then the two sides should be able to send each other and feedback information for unlimited continuous communication, until one party sends the end of the " end"　of the communication string, then the recipient returns an " end" , both parties to end the communication.