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[support at telium.io]

I’m trying to figure out asynchronous use of the ESL (from C). If I call esl_connect_timeout with a timeout of 0, what happens if the connection is not made immediately? Is there some callback function indicating success/failure?

If the esl connection is lost (FreeSwitch crashes), is there a callback function indicating the lost connection? Or do I need to issue a status/keepalive to ensure function succeeds?

Looking a bit at the esl.c code I’m wondering if the above are synchronous only…(polling for status)

[brian at freeswitch.com]

If you have a crash you should perform a back trace and submit an issue on github.

/b




On Wed, Nov 10, 2021 at 7:50 PM Telium Technical Support <support@telium.io (support@telium.io)> wrote:

[support at telium.io]

No crash, just learning how to use the ESL.  I strongly prefer async design, so wondering if connect and disconnect have some sort of success/failure callback.

Or is the only way to check success to send a command over the socket?

Same with disconnect, do we need to wait for a send failure?

From: Brian West [mailto:brian@freeswitch.com]
Sent: Thursday, November 11, 2021 8:46 AM
To: Telium Technical Support <support@telium.io>
Cc: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] ESL asynchronous use

If you have a crash you should perform a back trace and submit an issue on github.


/b





On Wed, Nov 10, 2021 at 7:50 PM Telium Technical Support <support@telium.io (support@telium.io)> wrote:

[grcamauer at gmail.com]

There is a SESSION_HEARTBEAT event that you can monitor to see if FS has stopped responding.  It also has a lot of other useful information.

Guillermo







On Thu, Nov 11, 2021 at 8:56 PM Telium Technical Support <support@telium.io (support@telium.io)> wrote:

[support at telium.io]

I looked at the ESL C code and I *THINK* that I have to poll using the esl_recv_event_timed function (to look for the SESSION_HEARTBEAT event).

Is there already a callback function that I can hook into to be notified of events?  If not, at which frequency should I poll for events (sleep inbetween) based on anyones experience?  I don’t like blocking code so I’m hoping there is already a callback function setup.

Or is there some other way to handle this?


From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Guillermo Ruiz Camauer
Sent: Friday, November 12, 2021 8:31 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] ESL asynchronous use

There is a SESSION_HEARTBEAT event that you can monitor to see if FS has stopped responding. It also has a lot of other useful information.


Guillermo

[anthony.minessale at g...]

You might like SignalWire RELAY which is a serverless call control API

https://docs.signalwire.com/topics/relay/#relay-documentation



On Sun, Nov 14, 2021 at 2:27 AM Telium Technical Support <support@telium.io (support@telium.io)> wrote:

[support at telium.io]

I didn’t see a C/C++ interface to this, also adds another layer (REST)…and I think is commercial which I can’t do at this point since I’m just doing proof of concept.



From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Anthony Minessale
Sent: Sunday, November 14, 2021 11:02 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] ESL asynchronous use

You might like SignalWire RELAY which is a serverless call control API


https://docs.signalwire.com/topics/relay/#relay-documentation



On Sun, Nov 14, 2021 at 2:27 AM Telium Technical Support <support@telium.io (support@telium.io)> wrote:

[david.villasmil.work a...]

XD

On Tue, 16 Nov 2021 at 23:13, Telium Technical Support <support@telium.io (support@telium.io)> wrote: