[asterisk-users] ARI delayed 183 due to device_state lookup

[Jöran Vinzens]

Hi all,

does anyone have an idea how to solve this issue?
As we understand this issue, this state change delays an SIP Session
Progress or a 200 OK by about 200ms when using ARI. We did not see this
behavior when using Dialplan (or AGI) only.

would be very appreciated if someone has a hint for us.

BR
Jöran


On Wed, Feb 20, 2019 at 10:28 AM Jöran Vinzens <vinzens at sipgate.de> wrote:

> Hi all,
>
> we are searching for shorter post dial delay and we were wondering why the
> asterisk takes about 190ms from an ARI Command Playback or Answer until the
> SIP Message is send out.
>
> We took the latest code from github and used the python scripts provided
> by sangoma in order to start a playback. Using this setup we ensure it is
> not our setup which causes the delay.
>
> So we see these likes in the log:
>
> [2019-02-20 10:13:50.985] VERBOSE[3079] res_ari.c: <--- Sending ARI
> response to 127.0.0.1:43764 --->
> 201 Created
> Location: /ari/playbacks/a5cb3f78-77db-41f8-9846-147ccb47411d
> Content-type: application/json
>
> {"id":"a5cb3f78-77db-41f8-9846-147ccb47411d","media_uri":"sound:tt-monkeys","target_uri":"channel:1550654030.2","language":"en","state":"queued"}
>
> [2019-02-20 10:13:50.987] DEBUG[3079] http.c: HTTP keeping session open.
> status_code:201
> [2019-02-20 10:13:51.178] DEBUG[2900] devicestate.c: No provider found,
> checking channel drivers for PJSIP - 1111
> [2019-02-20 10:13:51.179] DEBUG[2900] devicestate.c: Changing state for
> PJSIP/1111 - state 3 (Busy)
>
> As you can see the ARI Command gets acknowledged by the 201 response. now
> the asterisk tries to set the device state to busy. It seems to take about
> 190ms to lookup the provider before it fails.
>
> In our setup we do not use device states al all. Is there any way to
> deactivate this internal lookup or to speed it up? We already tried to
> unload some modules using device state without any success.
> --
>
> Jöran Vinzens - vinzens at sipgate.de
>
> sipgate GmbH - Gladbacher Str. 74 - 40219 Düsseldorf
> HRB Düsseldorf 39841 - Geschäftsführer: Thilo Salmon, Tim Mois
> Steuernummer: 106/5724/7147, Umsatzsteuer-ID: DE219349391
>
> www.sipgate.de - www.sipgate.co.uk
>
>

-- 

Jöran Vinzens - vinzens at sipgate.de
Telefon: +49 211-63 55 56-21
Telefax: +49 211-63 55 55-22

sipgate GmbH - Gladbacher Str. 74 - 40219 Düsseldorf
HRB Düsseldorf 39841 - Geschäftsführer: Thilo Salmon, Tim Mois
Steuernummer: 106/5724/7147, Umsatzsteuer-ID: DE219349391

www.sipgate.de - www.sipgate.co.uk
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