When you are finished using a socket, you can simply close its
file descriptor with
close; see section Opening and Closing Files.
If there is still data waiting to be transmitted over the connection,
close tries to complete this transmission. You
can control this behavior using the
SO_LINGER socket option to
specify a timeout period; see section Socket Options.
You can also shut down only reception or only transmission on a
connection by calling
shutdown, which is declared in
shutdownfunction shuts down the connection of socket socket. The argument how specifies what action to perform:
The return value is
0 on success and
-1 on failure. The
errno error conditions are defined for this function:
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