Perl Programming Documentation
Download Perl
Explore

Manual

- Overview
- Tutorials
- FAQs
- History / Changes
- License

Reference

- Language
- Functions
- Operators
- Special Variables
- Pragmas
- Utilities
- Internals
- Platform Specific

Modules

- A • B • C • D • E
- F • G • H • I • L
- M • N • O • P • S
- T • U • X

Tools

- Preferences

# shutdown

Perl 5 version 16.0 documentation
Go to top
Show recent pages
Recently read

# 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.