The "connection: Keep-Alive" tells the server to not close the connection, but the server has the option to keep it opened or close it, but it should reply to the client socket regarding its decision.

“连接：维生”告诉服务器不关闭连接，但服务器可以选择打开或关闭它，但它应该回复客户端套接字的关于其决定。

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Client, use the Socket on one server on the network a port for a connection request, once the connection is successful, open the session session is complete, close the Socket.

客户端，使用Socket对网络上某一个服务器的某一个端口发出连接请求，一旦连接成功，打开会话；会话完成后，关闭Socket。

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Client, use the Socket on one server on the network a port for a connection request, once the connection is successful, open the session session is complete, close the Socket.

客户端，使用Socket对网络上某一个服务器的某一个端口发出连接请求，一旦连接成功，打开会话；会话完成后，关闭Socket。

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