IO::Socket::INET - phpMan

NAME
    IO::Socket::INET - Object interface for AF_INET domain sockets

SYNOPSIS
        use IO::Socket::INET;

DESCRIPTION
    "IO::Socket::INET" provides an object interface to creating and using
    sockets in the AF_INET domain. It is built upon the IO::Socket interface
    and inherits all the methods defined by IO::Socket.

CONSTRUCTOR
    new ( [ARGS] )
        Creates an "IO::Socket::INET" object, which is a reference to a
        newly created symbol (see the "Symbol" package). "new" optionally
        takes arguments, these arguments are in key-value pairs.

        In addition to the key-value pairs accepted by IO::Socket,
        "IO::Socket::INET" provides.

         PeerAddr    Remote host address          <hostname>[:<port>]
         PeerHost    Synonym for PeerAddr
         PeerPort    Remote port or service       <service>[(<no>)] | <no>
         LocalAddr   Local host bind address      hostname[:port]
         LocalHost   Synonym for LocalAddr
         LocalPort   Local host bind port         <service>[(<no>)] | <no>
         Proto       Protocol name (or number)    "tcp" | "udp" | ...
         Type        Socket type              SOCK_STREAM | SOCK_DGRAM | ...
         Listen      Queue size for listen
         ReuseAddr   Set SO_REUSEADDR before binding
         Reuse       Set SO_REUSEADDR before binding (deprecated,
                                                      prefer ReuseAddr)
         ReusePort   Set SO_REUSEPORT before binding
         Broadcast   Set SO_BROADCAST before binding
         Timeout     Timeout value for various operations
         MultiHomed  Try all addresses for multi-homed hosts
         Blocking    Determine if connection will be blocking mode

        If "Listen" is defined then a listen socket is created, else if the
        socket type, which is derived from the protocol, is SOCK_STREAM then
        connect() is called. If the "Listen" argument is given, but false,
        the queue size will be set to 5.

        Although it is not illegal, the use of "MultiHomed" on a socket
        which is in non-blocking mode is of little use. This is because the
        first connect will never fail with a timeout as the connect call
        will not block.

        The "PeerAddr" can be a hostname or the IP-address on the
        "xx.xx.xx.xx" form. The "PeerPort" can be a number or a symbolic
        service name. The service name might be followed by a number in
        parenthesis which is used if the service is not known by the system.
        The "PeerPort" specification can also be embedded in the "PeerAddr"
        by preceding it with a ":".

        If "Proto" is not given and you specify a symbolic "PeerPort" port,
        then the constructor will try to derive "Proto" from the service
        name. As a last resort "Proto" "tcp" is assumed. The "Type"
        parameter will be deduced from "Proto" if not specified.

        If the constructor is only passed a single argument, it is assumed
        to be a "PeerAddr" specification.

        If "Blocking" is set to 0, the connection will be in nonblocking
        mode. If not specified it defaults to 1 (blocking mode).

        Examples:

           $sock = IO::Socket::INET->new(PeerAddr => 'www.perl.org',
                                         PeerPort => 'http(80)',
                                         Proto    => 'tcp');

           $sock = IO::Socket::INET->new(PeerAddr => 'localhost:smtp(25)');

           $sock = IO::Socket::INET->new(Listen    => 5,
                                         LocalAddr => 'localhost',
                                         LocalPort => 9000,
                                         Proto     => 'tcp');

           $sock = IO::Socket::INET->new('127.0.0.1:25');

           $sock = IO::Socket::INET->new(
                                   PeerPort  => 9999,
                                   PeerAddr  => inet_ntoa(INADDR_BROADCAST),
                                   Proto     => udp,
                                   LocalAddr => 'localhost',
                                   Broadcast => 1 )
                               or die "Can't bind : $IO::Socket::errstr\n";

        If the constructor fails it will return "undef" and set the
        $IO::Socket::errstr package variable to contain an error message.

            $sock = IO::Socket::INET->new(...)
                or die "Cannot create socket - $IO::Socket::errstr\n";

        For legacy reasons the error message is also set into the global $@
        variable, and you may still find older code which looks here
        instead.

            $sock = IO::Socket::INET->new(...)
                or die "Cannot create socket - $@\n";

  METHODS
    sockaddr ()
        Return the address part of the sockaddr structure for the socket

    sockport ()
        Return the port number that the socket is using on the local host

    sockhost ()
        Return the address part of the sockaddr structure for the socket in
        a text form xx.xx.xx.xx

    peeraddr ()
        Return the address part of the sockaddr structure for the socket on
        the peer host

    peerport ()
        Return the port number for the socket on the peer host.

    peerhost ()
        Return the address part of the sockaddr structure for the socket on
        the peer host in a text form xx.xx.xx.xx

SEE ALSO
    Socket, IO::Socket

AUTHOR
    Graham Barr. Currently maintained by the Perl Porters. Please report all
    bugs to <perlbug AT perl.org>.

COPYRIGHT
    Copyright (c) 1996-8 Graham Barr <gbarr AT pobox.com>. All rights reserved.
    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

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