-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Chad,
On 2/27/18 9:44 AM, Chad Stansbury wrote: > We've been troubleshooting an issue where our web application is > getting a very occasional request that contains no cookies even > though a Wireshark on the application server shows those cookies > coming in on the request. > > I was able to replay the request that was captured via Wireshark, > and when doing so, everything goes through just fine... so that > rules out any sort of weird character set / header parsing issues. > > Environment specifics: Tomcat v7.0.77 running the (http-bio) > connector > > Now here's the twist: Currently something in the site > infrastructure has been configured to proxy to Tomcat with HTTP/1.0 > instead of 1.1. We're trying to track that down and address that > issue (for performance reasons), but in the mean time, we're > wondering whether or not this is a concurrency issue related to > protocol caching/recycling? > > Has anyone ever seen anything like this before? Is there any > legitimate scenario(s) where Tomcat will *not* parse out the > cookies, but still route the request to the web app? Is this > possible an edge condition that that might be caused by the use of > HTTP/1.0? Could this possibly be caused by the number of maxThreads > exceeding the `processorCache` value? My immediate thought is that the cookie name or value contains a character that causes parsing to fail within Tomcat. Do you have any information about which cookies appear to be being ignored by Tomcat (that is, not passed-on to the application) versus those that ARE available to the application? Tomcat will generally log cookie-parsing errors to catalina.log, and possibly to the application's log as well, but it may only do so once per Tomcat-launch to avoid filling the disk with logs. Are you seeing anything in the Tomcat logs which suggest that cookie-parsing is failing ? Is the client a browser, or some non-human-interface device, such as a client-library or something like that? - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAlqVyfIACgkQHPApP6U8 pFhh3BAAgq6+/VHzI6732NX6To6OVTvIwXw/8OB2A/jDLNwFgWfNrci/KmtSsH0w acYcA0D08WBsS8bHD+dHUQ2qvY+0ccyIVGCbyMpZk+du/4bsghpb3PIszSZ+Nsbm JNuYxeBVfNRxD2DIDT4+98N20rs5t1zX7mCyWzRT1OU31DRFgmfxkF6I0PTdTRSv gPzolgEtszgT7wePifE2tcn1/9J47MstEs6QGMOm9t/Q8naGMCI4DEumMeJZzH4L BmTXHVL69RTw8NWJ2Rhqy8jhF1ZLazl4ASE59nfXrCHa/EwNkZ6BaVS0pvqJlkQB fTZNvbFpx7m0NOaxGzS5m2KCKFtH1R279RnMHRHovy0ljAr4hlW26APlUhlJsYe7 QMcm0/lyIZQd27pHhjoRzu9N5J01YotZ3rJLMzeBDI4vh1caRFtVAdyTHOdqdr+9 95WTTmtVRlcf7iq+9xdgIyPPCiFkdUOKFS0dc7V794yJjqOfW7ToJsEe/hZlCj5H 4yJGhJye3dH9rEzEgTPiIQb+mVYG9y5fJXK7XZ25pnvHNZ8+HheHXEUQdTWgW8ZI uHa6eitXXd0lp2xNUN2Itt58Isqn1U4cC7DsPZsH+eVSxIBrIUtx2YVDrwx7yywn 8K12ByKlxB7bpfBsMvmdhcZYuTp/y8q7W259117ZmCahhSwMm0k= =jwba -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
