Hi, >-----Original Message----- >From: ext Martin Drasar [mailto:dra...@optimsys.cz] >Sent: Monday, March 09, 2009 10:24 AM >To: sofia-sip-devel >Subject: Re: [Sofia-sip-devel] 904 No Matching Challenge > >Jerry Richards napsal(a): >> Hello All, >> >> If my MD5 Authentication username is incorrect, I noticed my >sofia-sip phone >> will get a "904 No Matching Challenge" event in response to my >> nua_authenticate() call. This only happens AFTER the first >> nua_authenticate() call (the first one works correctly). >> >> Has anyone encountered a similar issue? > >Yup, I did and some others too (for a bit different use cases >though)... > >I suggest you search the mailing list. Maybe one of these two >will help you a bit: > >Sofia-sip no matching challenge 904 in event_callback. >proxy authentication failed when redirecting
I was onto it when investigating some other problem recently. It's intended to be legitimate, if the proxy keeps challenging a request to which the user supplies the same authentication string more than once. The purpose is to eliminate endless request loops. When I removed the line that invalidated the cached challenge upon authentication failure, NUA still failed gracefully on a challenge loop condition. I should investigate if this is true for all cases. > >There maybe others, but these two I know about > >Martin > >> Here is the scenario: >> >> NUA Sofia-SIP Network >> ------------------ ------------------- ----------- >> nua_register() ===> ===> REGISTER >> (w/o Auth) >> <=== nua_r_register <=== 401 Unauth. >> (401 Unauthorized) >> nua_authenticate() ===> ===> REGISTER >> (with Auth) >> <=== nua_r_register >> (401 Unauthorized) >> nua_authenticate() ===> >> <=== nua_r_register >> (904 Operation has >> no matching chal- >> lenge) >> ... 30 seconds elapse here ... >> nua_register() ===> ===> REGISTER >> (w/o Auth) >> <=== nua_r_register <=== 401 Unauth. >> (401 Unauthorized) >> nua_authenticate() ===> >> <=== nua_r_register >> (904 Operation has >> no matching chal- >> lenge) Best regards, Mikhail ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Sofia-sip-devel mailing list Sofia-sip-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sofia-sip-devel
