On Sun, May 18, 2008 at 09:34:22PM +0000, jdk head wrote: > Thanks, Emil, for the quick response > > When resin's comet suspends the thread, does it not count against the > <thread-max> setting? If not, that's great.
Yes, that's right. It may be better to think of it in this way, though: the Comet servlet uses the threads from the same thread pool as everything else. When it suspends, the threads go back into the pool. When it resumes, it takes a thread from the pool. No additional threads are being allocated for Comet either dynamically or statically. > We're pretty deeply committed to GWT right now - lots of implementation > already, so I need to figure out a good way to get GWT to work with resin > comet. I can think of two possibilities to try: I think GWT is a great choice. I hope I didn't imply that I don't think it's suitable. It would be great if it had better Comet support, but AFAIK, it's not there yet. > 1) make inital calls to GWT's RemoteServiceServlet, and pass its > getThreadLocalRequest() and getThreadLocalResponse() into the comet servlet > service() and resume(). Then hope the suspension and everything still works > ok I'd have to check on this, but I don't think it would work. That is, I don't think you can pass a thread from a normal servlet to a Comet servlet. Also, I'm not sure what the semantics would be on the client even if you could. > 2) make initial calls to a resin comet servlet, then dig into the GWT source > and figure out what classes are doing the serialization of the RPC objects. > Have the comet servlet use these directly. This is more on track, but the problem still remains that you have to decode an RPC request on the client. This actually isn't that hard, but it requires hacking the GWT compiler a bit. All you really need to do is create a stable name for methods on the JavaScript side, since GWT will mangle them in its standard and obscure modes. Then you can just send down JavaScript invocations of those methods. > Could you see either approach working? and if so, which would you recommend? There has been some work on GWT and Comet. I've just glanced at these, so I can't give detailed comments. This one is a bit dated, but it might still work: http://www.jroller.com/masini/entry/a_comet_implementation_for_google This one uses Jetty, so I'm not sure if it would work with Resin. http://docs.codehaus.org/display/JETTY/GWT Best, Emil ============================================================ Emil Ong Chief Evangelist Caucho Technology, Inc. Tel. (858) 456-0300 mailto:[EMAIL PROTECTED] http://blog.caucho.com/ Caucho: Reliable Open Source --> Resin: application server --> Quercus: PHP in Java --> Hessian Web Services _______________________________________________ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
