shutdown - perldoc.perl.org

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# shutdown

Perl 5 version 18.2 documentation
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# shutdown

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage

- shutdown SOCKET,HOW

  Shuts down a socket connection in the manner indicated by HOW, which has the same interpretation as in the syscall of the same name.

          shutdown(SOCKET, 0);    # I/we have stopped reading data    shutdown(SOCKET, 1);    # I/we have stopped writing data    shutdown(SOCKET, 2);    # I/we have stopped using this socket

  This is useful with sockets when you want to tell the other side you're done writing but not done reading, or vice versa. It's also a more insistent form of close because it also disables the file descriptor in any forked copies in other processes.

  Returns `1` for success; on error, returns `undef` if the first argument is not a valid filehandle, or returns `0` and sets `$!` for any other failure.