NAME

       AnyEvent::XMPP::Ext::OOB - XEP-0066 Out of Band Data

SYNOPSIS

          my $con = AnyEvent::XMPP::Connection->new (...);
          $con->add_extension (my $disco = AnyEvent::XMPP::Ext::Disco->new);
          $con->add_extension (my $oob = AnyEvent::XMPP::Ext::OOB->new);
          $disco->enable_feature ($oob->disco_feature);

          $oob->reg_cb (oob_recv => sub {
             my ($oob, $con, $node, $url) = @_;

             if (got ($url)) {
                $oob->reply_success ($con, $node);
             } else {
                $oob->reply_failure ($con, $node, 'not-found');
             }
          });

          $oob->send_url (
             $con, 'someonewho@wants.an.url.com', "http://nakedgirls.com/marie_021.jpg",
             "Yaww!!! Hot like SUN!",
             sub {
                my ($error) = @_;
                if ($error) { # then error
                } else { # everything fine
                }
             }
          )

DESCRIPTION

       This module provides a helper abstraction for handling out of band data as specified in
       XEP-0066.

       The object that is generated handles out of band data requests to and from others.

       There is are also some utility function defined to get for example the oob info from an
       XML element:

FUNCTIONS

       url_from_node ($node)
           This function extracts the URL and optionally a description field from the XML element
           in $node (which must be a AnyEvent::XMPP::Node).

           $node must be the XML node which contains the <url> and optionally <desc> element
           (which is eg. a <x xmlns='jabber:x:oob'> element)!

           (This method searches both, the jabber:x:oob and jabber:iq:oob namespaces for the
           <url> and <desc> elements).

           It returns a hash reference which should have following structure:

              {
                 url  => "http://someurl.org/mycoolparty.jpg",
                 desc => "That was a party!",
              }

           If nothing was found this method returns nothing (undef).

METHODS

       new ()
           This is the constructor, it takes no further arguments.

       reply_success ($con, $node)
           This method replies to the sender of the oob that the URL was retrieved successfully.

           $con and $node are the $con and $node arguments of the "oob_recv" event you want to
           reply to.

       reply_failure ($con, $node, $type)
           This method replies to the sender that either the transfer was rejected or it was not
           fount.

           If the transfer was rejectes you have to set $type to 'reject', otherwise $type must
           be 'not-found'.

           $con and $node are the $con and $node arguments of the "oob_recv" event you want to
           reply to.

       send_url ($con, $jid, $url, $desc, $cb)
           This method sends a out of band file transfer request to $jid.  $url is the URL that
           the otherone has to download. $desc is an optional description string (human readable)
           for the file pointed at by the url and can be undef when you don't want to transmit
           any description.

           $cb is a callback that will be called once the transfer is successful.

           The first argument to the callback will either be undef in case of success or 'reject'
           when the other side rejected the file or 'not-found' if the other side was unable to
           download the file.

EVENTS

       These events can be registered to whith "reg_cb":

       oob_recv => $con, $node, $url
           This event is generated whenever someone wants to send you a out of band data file.
           $url is a hash reference like it's returned by "url_from_node".

           $con is the AnyEvent::XMPP::Connection (Or AnyEvent::XMPP::IM::Connection) the data
           was received from.

           $node is the AnyEvent::XMPP::Node of the IQ request, you can get the senders JID from
           the 'from' attribute of it.

           If you fetched the file successfully you have to call "reply_success".  If you want to
           reject the file or couldn't get it call "reply_failure".