From: Yves Vindevogel <[EMAIL PROTECTED]>
Date: Thu, 08 Jun 2006 19:45:51 +0200
Hi,
I would like to have some more logging of everything that is send to my
Cocoon server.
I have Jetty / Cocoon listening on port 8888.
I can see it logs a page that is being asked.
However, (and I'm trying to do something strange) I'm trying to make a
Jabber client connect to it.
I set my jabber client to connect to the server on port 8888.
Sounds interesting, if a bit weird :-)
I'm guessing a bit here as I've not used it myself, but I thought Jabber
uses XMPP, not HTTP? According to RFC3920 [1],
"The Extensible Messaging and Presence Protocol (XMPP) is an open Extensible
Markup Language [XML] protocol for near-real-time messaging, presence, and
request-response services."
...
"Although there is no necessary coupling of an XML stream to a [TCP]
connection (e.g., two entities could connect to each other via another
mechanism such as polling over [HTTP]), this specification defines a binding
of XMPP to TCP only."
so I'm not surprised just pointing your Jabber client at a HTTP server
doesn't work. On the other hand, since it mentions request-response
services, I guess it might be possible to plug Cocoon into a Jabber server
by providing another Environment implementation that uses its request &
response types rather than HttpRequest & HttpResponse?
Alternatively, I noticed the Jabber site has an enhancement proposal for
"HTTP Binding" [2]. Although this seems more concerned with HTTP clients
connecting to an XMPP server, it did contain a link to one on "Jabber HTTP
Polling" [3] that has been passed to active status. This uses periodic POST
requests with content type text/xml, so I guess it may be possible to
connect those to Cocoon. How you configure your client to use this type of
connection, though, I've no idea. RTFM?
The downside to that, of course, is you'd probably end up having to more or
less implement a Jabber server in Cocoon...
Here's another thought. Wildfire [4] is an Open Source Java-based XMPP
server that can be deployed as a WAR, that supports plug-ins. Perhaps you
could write a plug-in for it that passes various messages through to a
Cocoon instance running in another context on the same server? Just (!) get
a RequestDispatcher to the Cocoon servlet, create your own HttpRequest
implementation class (filled with the contents of the message) and supply a
HttpResponse that captures the output to a string buffer. [random thought -
it's too late now, but perhaps that would have made an interesting GSoC
project...]
Of course, it does not connect, but I can't see anything in the logs about
what it's sending, ....
If it's not seeing a valid HTTP request, that's not entirely surprising.
Is something like this possible (log that jabber is looking for contact,
that's all)
I don't want to create a jabber server with cocoon, just see what they
send.
So why not just point it to a Jabber server, then use a packet sniffer like
Ethereal [5] to eavesdrop on the normal traffic between the two? So long as
it's configured not to use a TLS-encrypted connection there's no reason that
shouldn't work, and it'd be a lot easier than trying to use Cocoon to do the
same job :-)
Andrew.
[1] http://www.ietf.org/rfc/rfc3920.txt
[2] http://www.jabber.org/jeps/jep-0124.html
[3] http://www.jabber.org/jeps/jep-0025.html
[4] http://www.jivesoftware.org/wildfire/
[5] http://www.ethereal.com/
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