Re: [OpenSER-Users] uac_replace_from and CANCEL

Hi Andreas, I called without any branches. Bogdan, I'd appreciate if you can spare sometime to look at this again. Rgds, Bai Shi -----Original Message----- From: Andreas Granig [mailto:agranig@sipwise.com] Sent: 2008年3月20日 1:34 To: Bogdan-Andrei Iancu Cc: Bai Shi; Thomas Gelf; users(a)openser.org Subject: Re: [OpenSER-Users] uac_replace_from and CANCEL Or, to be more specific, I call it from a route which is called by a branch_route. Not sure if that matters. Andreas Andreas Granig wrote: > Bogdan, > > I just tested with 1.3.1, and there the From of the CANCEL is also NOT > updated. A probably not so unimportant side-note is that I call > uac_replace_from() from a branch_route. > > Andreas > > Bogdan-Andrei Iancu wrote: >> Hi Bai Shi, >> >> I just tested (to be sure no bugs are present) and in 1.3, the CANCELs >> are automatically updated (the FROM header), as expected. >> >> Regards, >> Bogdan >> >> Bai Shi wrote: >>> Hi, Thomas, >>> This will do in openser 1.2, however, in openser 1.3 it won't do any >>> help. The CANCEL will be sent out regardless what you have done to >>> the request, but follow the information in the original INVITE. I >>> tested it and suffered a lot ;( >>> Rgds, >>> BS >>> >>> -----Original Message----- >>> From: users-bounces(a)lists.openser.org >>> [mailto:users-bounces@lists.openser.org] On Behalf Of Andreas Granig >>> Sent: 2008年3月13日 2:54 >>> To: Thomas Gelf >>> Cc: users(a)openser.org >>> Subject: Re: [OpenSER-Users] uac_replace_from and CANCEL >>> >>> Hi Thomas, >>> >>> Yes, I'm doing it that way now (without that "append_branch()" >>> though), but if you have an uuid-based setup where you fetch the uuid >>> from the subscriber table during authentication of the INVITE and >>> then with that uuid fetch dynamic data from the usr_preferences table >>> to be used for "uac_rewrite_host()", then you have to do some >>> work-arounds and hacks to get that data for the CANCEL as well, which >>> could be quite a pain. >>> >>> So yes, it would be really great if this could be done automatically >>> *hint hint* :) >>> >>> Andreas >>> >>> Thomas Gelf wrote: >>> >>>> Applying uac_replace_from() to the CANCEL request should do the job, >>>> it sadly doesn't happen automagically :'-( >>>> >>>> Try something like: >>>> >>>> if(is_method("CANCEL") && uri =~ "^sip:...") >>>> { >>>> if(t_check_trans()) >>>> { >>>> rewritehostport("..."); >>>> uac_replace_from("..."); >>>> append_branch(); >>>> } >>>> if(!t_relay()) >>>> { >>>> sl_reply_error(); >>>> } >>>> } >>>> >>>> Cheers, >>>> Thomas Gelf >>>> >>>> Andreas Granig schrieb: >>>> >>>>> Hi, >>>>> >>>>> I hit another problem with a Cisco PGW in combination with CANCEL, >>>>> and I'm not sure which fault it is. If I do uac_replace_from in the >>>>> INVITE, the From-Header is altered somehow and sent to the PGW. So >>>>> if A calls B where B is a PGW, the From from A to OpenSER is for >>>>> example sip:a@somedomain and from OpenSER to B it's >>>>> sip:other-a@somedomain. >>>>> >>>>> If the call is cancelled, the From-header isn't altered, so the >>>>> From from A to OpenSER is sip:a@somedomain and from OpenSER to B >>>>> it's sip:a@somedomain as well. >>>>> >>>>> Now the PGW seems to ignore this CANCEL, and I guess it's because >>>>> of the different From-usernames, since it works if I don't do any >>>>> uac_replace_from. >>>>> >>>>> RFC3261 says in §9.1: >>>>> The Request-URI, Call-ID, To, the numeric part of CSeq, and From >>>>> header >>>>> fields in the CANCEL request MUST be identical to those in the >>>>> request being cancelled, including tags. >>>>> >>>>> So is it correct behavior of the PGW because the From header in the >>>>> CANCEL is different from the From header in the INVITE? Should >>>>> OpenSER alter the From in the CANCEL as well? Or should the PGW >>>>> just check the From tags, but not the From URI? >>>>> >>>>> Andreas >>>>> >>>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)lists.openser.org >>>> http://lists.openser.org/cgi-bin/mailman/listinfo/users >>>> >>> _______________________________________________ >>> Users mailing list >>> Users(a)lists.openser.org >>> http://lists.openser.org/cgi-bin/mailman/listinfo/users >>> >>> _______________________________________________ >>> Users mailing list >>> Users(a)lists.openser.org >>> http://lists.openser.org/cgi-bin/mailman/listinfo/users >>>