Hello Jeff & al, Here it is, I've created a Git repository with the sources for the webapp & the test (maven projects), and instructions in the README on how to reproduce the issue.
https://github.com/lpetit-yseop/apr-test Hope this will help you get started on reproducing the problem, Regards, -- Laurent Petit On Mon, 2012-06-25 at 14:42 +0200, Jeff MAURY wrote: > Yes, fine > > Jeff > > > On Mon, Jun 25, 2012 at 1:46 PM, Laurent Petit <lpe...@yseop.com> wrote: > > > On Mon, 2012-06-25 at 11:51 +0200, Jeff MAURY wrote: > > > > > If you can post a Mavenized example, I could have time to run it and > > watch > > > at it. > > > > > > Ok, thanks, I will. > > > > Is a mavenized project with source code published on github ok for you ? > > > > > > > > > > Regards > > > Jeff > > > > > > > > > On Mon, Jun 25, 2012 at 11:40 AM, Laurent Petit <lpe...@yseop.com> > > wrote: > > > > > > > Hello, > > > > > > > > Is there anything I can do to help qualify the problem even more ? > > > > > > > > Beyond having shown the source code of the servlet, would a fully > > > > mavenized example help? Anything else? > > > > > > > > Regards, > > > > > > > > -- > > > > Laurent > > > > > > > > > > > > On Fri, 2012-06-22 at 10:21 +0200, Laurent Petit wrote: > > > > > Hello, > > > > > > > > > > On Thu, 2012-06-21 at 22:53 +0200, Jeff MAURY wrote: > > > > > > Is it specific to Wordpad or any launched process will do the > > trick ? > > > > > > Do you tried with a non UI process (console) ? > > > > > > > > > > > > > > > I did an additional test, as you suggested, with a non UI process (a > > > > > small java executable launched in headless mode, whose purpose was > > just > > > > > to wait for 20 seconds before exiting). > > > > > > > > > > I can reproduce the problem with this headless executable: the HTTP > > > > > client is blocked until the 20 seconds elapse and the process is > > killed. > > > > > > > > > > > > > > > Here is the modified servlet code I used: > > > > > > > > > > https://www.refheap.com/paste/3285 > > > > > > > > > > > > > > > and here is the code for the small java program: > > > > > > > > > > https://www.refheap.com/paste/3286 > > > > > > > > > > > > > > > > > > > > Regards, > > > > > > > > > > -- > > > > > Laurent > > > > > > > > > > > > > > > > > > > > > > > > > > > Jeff > > > > > > > > > > > > On Thu, Jun 21, 2012 at 10:45 PM, Laurent Petit <lpe...@yseop.com> > > > > wrote: > > > > > > > > > > > > > En Réponse à "Tomcat Users List" <users@tomcat.apache.org> le 21 > > > > juin > > > > > > > 2012 00:07 Can you verify your 2 threads (reading input an > > error) are > > > > > > > launched ? Yes they are. Verified. Can you confirm you are > > getting > > > > the > > > > > > > problem only on Windows ? Yes sir, we're unable to reproduce it > > on > > > > Ubuntu. > > > > > > > Jeff On Wed, Jun 20, 2012 at 4:19 PM, Laurent Petit < > > > > lpe...@yseop.com> > > > > > > > wrote: > Hello, > > I have a problem with keep-alive connections, > > > > when > > > > > > > starting a subprocess > (via JDK's default ProcessBuilder/Process > > > > API), > > > > > > > while also having > started Tomcat with the APR HTTP/1.1 > > Connector. > > > > > > The > > > > > > > problem symptom is with Keep-Alive connection, as follows: > > - > > the > > > > client > > > > > > > (browser, jmeter, etc.) sends a first request > - the servlet > > starts > > > > a > > > > > > > Process for e.g. wordpad.exe > - the servlet returns an > > > > acknowledgment html > > > > > > > content, sets the content > length, flushes the writer, and > > returns > > > > > - the > > > > > > > client displays the received acknowledgement html content, sends > > > > > > > the > > > > > > > second request to the server. > - the server doesn't answer. No > > > > Tomcat log > > > > > > > ever reports the start of > something received. > - Then when on > > the > > > > server > > > > > > > you close the wordpad.exe instance, the server > finally handles > > the > > > > second > > > > > > > request. > > I have created a small servlet code which > > reproduces the > > > > > > > problem. > For the demo, it suffices to have the started > > subprocess > > > > be > > > > > > > > "wordpad.exe". Of course my real process is more interesting > > than > > > > > that > > > > > > > :-). > > You can find the servlet code for reproducing the test > > > > here: > > > > > > > > > https://www.refheap.com/paste/3254 > > > To reproduce the > > problem > > > > > > > deterministically, the ConnectionTimeout for > the APR HTTP > > > > Connector in > > > > > > > servlet.xml must be set sufficiently low. > With my boxes, I get > > a > > > > 100% > > > > > > > error hit when set at 200 ms. > > You can find here the jmeter > > > > script which > > > > > > > hits the same page again and > again with "keep-alive" option set > > > > on: > > > > > > > > > https://www.refheap.com/paste/3255 > > > So far, the only > > reliable > > > > > > > solution we have found to work around this > problem is to not > > use > > > > the > > > > > > > HTP/1.1 APR Connector. > > > My configuration : > Windows 2008 US > > > > std R2 > > > > > > > 64bits > Tomcat 6.0.32 64 bits > Java 6u30 64 bits(Oracle) > > > > Same > > > > issue > > > > > > > has been observed on Windows 7 32 bits. > > Was not able to > > > > reproduce the > > > > > > > issue on Linux Ubuntu Desktop 11.10 or > 12.04. > > > Thanks for > > your > > > > > > > support, ideas, solutions, etc. > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > To > > > > > > > unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For > > > > additional > > > > > > > commands, e-mail: users-h...@tomcat.apache.org > > -- Jeff MAURY > > > > "Legacy > > > > > > > code" often differs from its suggested alternative by actually > > > > working and > > > > > > > scaling. - Bjarne Stroustrup http://www.jeffmaury.com > > > > > > > http://riadiscuss.jeffmaury.com http://www.twitter.com/jeffmaury > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > Laurent Petit > > > > > > > > Agence +33 (0)4 78 47 07 49 > > > > > > > > Email lpe...@yseop.com > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yseop apporte une réponse intelligente et individualisée à chacun de > > vos > > > > clients > > > > > > > > > > > > > > > > www.yseop.com > > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > > > > > > > > > > > > > > -- > > Laurent Petit > > > > Agence +33 (0)4 78 47 07 49 > > > > Email lpe...@yseop.com > > > > > > > > > > > > > > > > Yseop apporte une réponse intelligente et individualisée à chacun de vos > > clients > > > > > > > > www.yseop.com > > > > > > > > -- Laurent Petit Agence +33 (0)4 78 47 07 49 Email lpe...@yseop.com Yseop apporte une réponse intelligente et individualisée à chacun de vos clients www.yseop.com --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
