Marc, Thanks for your response. I will put together a little servlet that demonstrates this. I did find out the *cause* of the problem. I think this is a bug in tomcat... The situation is this: If you have a servlet that implements the SingleThreadedModel AND this servlet opens a URL back to a servlet in the same container THEN tomcat will block/deadlock This did not happen with JServ or any other servlet container. I commented out the "impements sigleThreadedModel" line and it worked like a charm. Hope this helps in determining the problem. I will send the servlet to you by tomorrow. Thanks, naeem > -----Original Message----- > From: Marc Saegesser [mailto:[EMAIL PROTECTED]] > Sent: Monday, June 25, 2001 4:24 PM > To: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED] > Subject: RE: Plz help! Tomcat blocks when calling itself - i am > desperate! > > > Any chance you could send a small sample application that > demonstrates the > problem? > > > -----Original Message----- > > From: Bari, Naeem [mailto:[EMAIL PROTECTED]] > > Sent: Monday, June 25, 2001 2:23 PM > > To: '[EMAIL PROTECTED]' > > Subject: Plz help! Tomcat blocks when calling itself - i am > desperate! > > > > > > > > I apologize for posting in the dev group, but postings to the > > user group have not shed any light on my problem, and I getting > > desperate! > > > > Here is my problem: > > -------------------------------------------------- > > > > My environment: > > Solaris 8 (fully patched) > > jdk 1.3.1, with hotspot enabled > > tomcat 3.2.2 > > apache 1.3.19 > > > > The problem: > > I have a servlet that opens a URL connection to the > > servlet container. So if I call http://blah/blinky, > > where blinky is my servlet, it is possible under some > > situations for this servlet to open a URL such as > > http://blah/lumpy, where lumpy is some other servlet. > > > > This is part of a largish site publishing framework > > I built on top of JServ. Now, things worked great with > > JServ, but I am having a devil of a time getting this > > to work in Tomcat. > > > > Observations: > > When the blinky servlet opens a URL to the same tomcat > > instance, the log entries for mod_jk go as far as making > > the call to marshal stuff before calling tomcat - as seen > > by the mod_jk.log entry: > > [jk_ajp13.c (480)]: ajp13_marshal_into_msgb - Done > > At this point, nothing happens. I *should* be seeing entries > > for the jk_open_socket function, but they never appear. > > > > What I have tried: > > - I have disabled the default 8080 listener, thinking it > > may be interfering. > > No luck > > - I changed the cachesize of the ajp12 and ajp13 workers > > to 8 from the default of 1. > > No luck > > - I added the "min_spare_threads" parameter to the entries > > for the ajp12 and ajp13 connectors in server.xml > > No luck > > - switched between tomcat 3.2.1 and 3.2.2 *and* 4.0b5 > > No luck > > - upgraded apache to 1.3.19 > > No luck > > - switched between jdk1.2.2 and jdk1.3.1 > > No Luck > > - switched between solaris and win2k > > No luck > > - Torn my hair out from the roots > > No luck > > > > I am at my wits end. Any help will be gratefully accepted. > > > > TIA, > > naeem >
