Handle SIP NOTIFY without subscription

General
1

Hello.
Could you please point me how to proxy NOTIFY event from Janus server to browser?
I have the case when sip server send NOTIFY event (without any SUBSCRIBE requests) and Janus server responses with 481 Subscription Does Not Exist.
NOTIFY looks like this

NOTIFY sip:...
   ...
   Event: hold

I’v tried to use subscribe method like

handle.send({message: {request: 'subscribe', event: 'hold'}})

but got response 489 Event package not supported

So is there any method to handle NOTIFY messages on a browser side code?

1 Like
2

For NOTIFY without a previous SUBSCRIBE, I’m pretty sure It’s the Sofia SIP stack that rejects them automatically, so the application never sees them. I don’t think Sofia can be configured to handle NOTIFY without a SUBSCRIBE: if the SIP server rejects the SUBSCRIBE for hold, this sounds like a problem in the server?

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3

Make also sure you’re using a recent enough version of Sofia, which means the Freeswitch version rather than the old 1.12.11.

4

I found that sofia has config <param name="proxy-notify-events" value="hold,talk"/>. As I understand, I need to recompile janus to apply this param to sofia?

5

If it’s stuff you need to add to the stack when it is initialized, then yes. Of course, if you get it working, we’d appreciate a PR so that we can review it and possible include it upstream.

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