How to properly disable socket (Linux)

I have encountered several problems, which are related to the failure to completely close the socket on the client or server. InCodeThis type of problem can be seen everywhere, but it is not easy to expose bugs.

For a half-closed socket, the first side is fin_wait2 and the other side is wait_close.

There are some concise articles on the InternetArticleFor reference.

Reference Links:

"Why does the socket send () or return success if the remote connection has been closed ?" .

"Socket. Send () succeeds, but remote end point closed the connection"

Http://bytes.com/topic/c-sharp/answers/501034-socket-send-succeeds-but-remote-end-point-closed-connection

Msdn article: normal shutdown, linger options, and socket Shutdown

"Graceful shutdown, linger options, and socket Closure"

Http://msdn.microsoft.com/en-us/library/ms738547