[Freeswitch-users] UDP/DTLS/SCTP webrtc-datachannel Freeswitch 1.10.6 and sip.js

Giovanni Maruzzelli gmaruzz at gmail.com
Thu Oct 21 13:31:08 UTC 2021

On Thu, Oct 21, 2021 at 3:10 PM Jonathan Hunter <jhunter at voxboxcoms.co.uk>

> Hi guys,
> Just wondered if anyone had suggestions around this or had this issue
> before, we have 2 web clients using the sip.js library and we are trying to
> use the data channel to send messages to one another.
Why don't you use the MESSAGE sip method (supported by both freeswitch and

You can even process the MESSAGE into freeswitch's chatplan, if needed.


> If I bypass media and send media peer to peer it works fine, however if I
> try and send an invite with the data channel defined;
> m=application 52004 UDP/DTLS/SCTP webrtc-datachannel
> Freeswitch seems to consume this when bridging to the target end
> point/user. Does freeswitch support SCTP/ webrtc-datachannel if I wanted to
> present it from leg A to leg B so the media can flow via freeswitch?
> This is using debian:buster container.
> Thanks
> Jon


Giovanni Maruzzelli
cell: +39 347 266 56 18
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