[Freeswitch-users] ESL asynchronous use

Telium Technical Support support at telium.io
Thu Nov 11 14:01:51 UTC 2021

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 at freeswitch.com] 
Sent: Thursday, November 11, 2021 8:46 AM
To: Telium Technical Support <support at telium.io>
Cc: FreeSWITCH Users Help <freeswitch-users at 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.





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

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)


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