January 2002
Beginner
480 pages
13h 15m
English
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Handling registration requests
The first of the handlers defined for <iq/>
elements is the iq_register() function. We put it
first in the list, as we consider receipt of
<iq/> elements in the
jabber:iq:register namespace to be the most common.
We want this function to deal with the complete registration conversation.
This means it must respond to IQ-get and IQ-set requests.
sub iq_register {
my $node = shift;
debug("[iq_register]");
The element to be handled is the primary piece of data that the dispatcher passes to a callback. The element is received by the $node
variable, which is a Jabber::NodeFactory::Node object.
Jabber::NodeFactory is the wrapper around the
class that actually represents the elements (the nodes).
Nodes are created using
the Jabber::NodeFactory class.
The first thing we should do is make sure it’s appropriate to continue
inside this function, which is designed to handle only
jabber:iq:register-qualified queries. The namespace
jabber:iq:register
is represented with the constant NS_REGISTER, imported
from the Jabber::NS module:
return unless my $query = $node->getTag('', NS_REGISTER);
debug("--> registration request");
The getTag() method can have up to two arguments.
The first can be used to specify the name of the tag you want to get, and the second argument can contain a namespace to narrow down the request. For example, there are two <x/>
elements in this <message/> element:
<message to='dj@qmacro.dyndns.org' from='piers@jabber.org' id='2941'> <body>Let ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.