[Freeswitch-users] Presence Issues with Secure Websockets

Thomas Quintana thomas at bettervoice.com
Wed Jun 10 21:11:28 MSD 2015

Hey Guys,

We're subscribing to presence events via SIP.js using a secure websocket
(WSS) and we can see the subscriptions being received by FreeSWITCH with a 202
Accepted, but never receive any events via the notify event. Alternatively,
when we move to a plain websocket (WS) everything seems to work as expected.

After digging around we found that a few people were experiencing similar
issues with FreeSWITCH and additionally with Kamailio
http://lists.sip-router.org/pipermail/sr-users/2014-July/084157.html. The
issue was resolved with Kamailio by patching the contact header. In an
attempt to achieve the same results we have experimented with the settings
below but no success.

   - <param name="NDLB-force-rport" value="safe"/>
   - <param name="NDLB-received-in-nat-reg-contact" value="true"/>

We also have an open ticket with the folks over at SIP.js
https://github.com/onsip/SIP.js/issues/184. Any help would be greatly

Best Regards,

Thomas Quintana
Chief Technology Officer
Phone: 1 (512) 677-6200
Website: http://www.bettervoice.com
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