Hello, the source code needs to be checked, iirc, at some point there was an option to use last publish, so the etag was not really considered.
You said 'intermitent', but I assume is not the case that etag is used for follow up publish, just the effect on blf. Cheers, Daniel On 17/10/15 13:24, Asgaroth wrote: > Hi All, > > I've come accross an intermittent issue where an initial publish is > sent to our presence server, proxy recieves the subsequent 200 with > etag, but the following publish sent does not contain the sip-if-match > header of the recieved 200, which ends up causing trouble with BLF on > our test devices, it also has the added side affect of not being > cleared out of the presentity table, these entries need to be manually > removed. > > This does not occur all the time, I can use the same phone and make > several calls before this issue occurs. It is not limited to a device > type, we've tried with panasonic, polycom, cisco, zoiper, yealink and > linksys devices, all exhibit the same sporadic behaviour. > > I've attached an example sip trace of the publish messages where this > happens, you can see the second publish doesnt have the sip-if-match > header whose content should be that of the sip-etag in the previous > 200 to the initial publish. > > I'm not sure if there is something I am misunderstanding here, a > configuration issue, or if this is indeed a bug. > > Both the proxy and the presence server are running kamailio v4.3.3. > > Any pointers/suggestions/guidance would be appreciated. > > If you need any additional info, please dont hesitate to ask. > > Thanks > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com
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