[SR-Users] pua_dialoginfo publish sent without recieved etag (intermittent)

Daniel-Constantin Mierla miconda at gmail.com
Tue Oct 20 21:37:31 CEST 2015


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.


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
> _______________________________________________
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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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