If this is the bug I think it is, a checkin from 10/2011 fixed this bug. handle internal error from redirect recursion overflow directly instead of redirecting to internal error page. Prevents error displaying error page from crashing server.
If updating to a more recent server isn't an option, you should be able to apply the patch standalone: http://aolserver.cvs.sourceforge.net/viewvc/aolserver/aolserver/nsd/op.c?r1=1.18&r2=1.19 Also, doesn't necessarily need to be hackers probing you; some versions of windows are very eager about discovering shares on their local network. -J Fenton, Brian wrote: > Hello > > We've just had some reports of this error re-appearing on some systems. Was > there ever a solution found? > > These PROPFIND/OPTIONS methods seem to be something to do with WebDav, which > as far as I'm aware, we're not using. Any idea what would cause them to > appear in the logs? > > Thanks > Brian > > > -----Original Message----- > From: Tom Jackson > Sent: 14 April 2009 14:10 > To: aolserver-talk@lists.sourceforge.net > Subject: [AOLSERVER] Tracked down bug with PROPFIND / OPTIONS methods > > Over the last few years some users have noticed that their servers > suddenly stop responding, and the error log has entries similar to this: > > [-conn:965-] Error: return: failed to redirect > 'PROPFIND /global/file-not-found.tcl': exceeded recursion limit of 3 > [-conn:965-] Error: return: failed to redirect > 'PROPFIND /global/server-error.tcl': exceeded recursion limit of 3 > > The second error.log line then repeats hundreds or thousands of times > until the server stops responding. > > The question is why this happens, and what do these log entries tell > us. > > I think I have found out the answer, but the fix isn't apparent. > > The first error message indicates the recursion limit code is working > correctly, after three tries, the HTTP status code goes from 404 to 500. > The second error message indicates a similar recursion limit is reached > looking for a 500 handler. Unfortunately there is a loop here: > > Ns_ConnReturnInternalError > executes > ReturnRedirect > which executes > Ns_ConnRedirect > which executes > Ns_ConnReturnInternalError > > This loop accounts for the remaining error log entries. > > One problem is that ReturnRedirect uses the redirects configured like > this: > > ns_section "ns/server/farid/redirects" > ns_param 404 "/fnf-tmpl.tcl" > ns_param 403 "global/forbidden.html" > ns_param 500 "global/server-error.tcl" > > What is missing, it seems to me is the method of the request. The method > is used in Ns_AuthorizeRequest and Ns_ConnRunRequest. > > The quick fix is to not configure a 500 redirect. > > tom jackson > > > -- > AOLserver - http://www.aolserver.com/ > > To Remove yourself from this list, simply send an email to > <list...@listserv.aol.com> with the > body of "SIGNOFF AOLSERVER" in the email message. You can leave the Subject: > field of your email blank. > > _______________________________________________ > aolserver-talk mailing list > aolserver-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/aolserver-talk > > ------------------------------------------------------------------------------ > Monitor your physical, virtual and cloud infrastructure from a single > web console. Get in-depth insight into apps, servers, databases, vmware, > SAP, cloud infrastructure, etc. Download 30-day Free Trial. > Pricing starts from $795 for 25 servers or applications! > http://p.sf.net/sfu/zoho_dev2dev_nov > _______________________________________________ > aolserver-talk mailing list > aolserver-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/aolserver-talk > ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ aolserver-talk mailing list aolserver-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aolserver-talk
