On Tue, 2006-11-21 at 23:39 +0000, Mr I Forrester wrote: > Hi All, > > I was reading up on Comet [1] and wondered if Apache Cocoon would have > the ability to do Comet method - *Comet* is a programming technique that > enables web servers to send data to the client without having any need > for the client to request it. It allows creation of event-driven > <http://en.wikipedia.org/wiki/Event-driven> web applications > <http://en.wikipedia.org/wiki/Web_applications> which are hosted in the > browser. > > I have a few ideas which could use the method if it was possible, but I > would like to use the Cocoon framework to make them happen. > > Any thoughts? > > Regards, > > Ian Forrester | Cubicgarden.com > > [1] - http://en.wikipedia.org/wiki/COMET_(programming)
I couldn't find any technical details browsing around the references on Wikipedia but I suppose it Comet wants to exploit the same HTTP trick as mod_pubsub (chunked encoding?) to keep the connection open permanently. I see two problems using that for web applications across the Internet. One is that it does not work as soon as there is a store-and-forward proxy between server and browser, and you'll have to revert to pull-mode. Second, every user blocks one of more connections, and your infrastructure must have the resources to support that many sockets / threads / process. If you want to use it in a Cocoon serializer / reader you'll first have to sort out how to disable the output buffering done by Cocoon and the servlet container at various levels. Cheers, Alfred. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
