On Mon, Jan 30, 2023 at 7:30 PM Dan Cropp wrote:
> We have used AMI for many years and I’m in the process of migrating to ARI.
>
>
>
> My understanding is the call should be handed off to Stasis for the ARI
> application to control it.
>
>
>
> I was playing around with things and discovered the ARI hangup (DELETE
> /channels/{channelId}) allowed me to hangup calls even when no StasisStart
> is received.
>
> I tried some other requests and they did not seem to work. This is what I
> expected to happen for the hangup.
>
> Are there other commands that are allowed on channels when the call is not
> in the Stasis app? (Obviously creating a channel and externalMedia will
> work because they create new channels).
>
There's not really a list, some just work due to the internal way they work
in Asterisk.
>
>
> Also, to be fault tolerant, I noticed a call handed off to Stasis app will
> remain in the Stasis app, even if the ARI/WebSocket connection drops (power
> outage, etc). When establishing the ARI/WebSocket connection, the first
> thing I am planning to do is GET a list of the channels. This returns all
> of the channels in the system and not just the channels that are in this
> Stasis apps control. I plan to go through the list and identify the
> channels dialplan data. Look for app_name of Stasis and the app_data
> (comma-delimited).
>
> If app_name = “Stasis” and app_data’s first section of the comma-delimited
> parse portion matches the Stasis app name this instance is used, I take
> control of this channel.
>
> I am planning this additional check because I noticed the Stasis power
> outage scenario resulted in channels stuck in the Stasis app. If I don’t
> take control of these channels, it’s possible to eventually have
> hundreds/thousands of channels. For SIP calls, the other end eventually
> hangs up. However, this isn’t the case with Local channels. Particularly
> when both ends are locally controlled by Stasis.
>
>
>
> Does this sound like I am on the right track for migrating from AMI to
> Stasis, ARI/Websocket support?
>
You may be able to get the application details[1][2] which would tell you
what the application is subscribed to, which would include the channels.
[1]
https://wiki.asterisk.org/wiki/display/AST/Asterisk+20+Applications+REST+API#Asterisk20ApplicationsRESTAPI-get
[2]
https://wiki.asterisk.org/wiki/display/AST/Asterisk+20+REST+Data+Models#Asterisk20RESTDataModels-Application
--
Joshua C. Colp
Asterisk Project Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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