[Freeswitch-users] Event Socket Layer State Diagram

[Duvid Rottenberg]

In my ESL app I associate the CHANNEL_EXECUTE with the command I sent by
comparing the Application & Application-Data headers to what I originally
sent, then I store the Application-UUID in my app.

I haven't found the PLAYBACK_START and PLAYBACK_STOP events so useful,
also PLAYBACK_STOP
doesn't always fire, in particular I found that if playback is stopped by
sending the break command there is no PLAYBACK_STOP event.

Duvid Rottenberg


On Wed, May 28, 2014 at 3:08 AM, Grant Bagdasarian <GB at cm.nl> wrote:

> Hello,
>
>
>
> Is there a state diagram available which shows the state transitioning for
> all Channel Events and Channel States?
>
>
>
> Also, I’ve wrote a simple ESL application which listens for all events
> happening in FS during a single call, and I’ve been studying the Channel
> Events/States and the correlation between them. Very useful. I recommend
> every new ESL developer to do this.
>
>
>
> I do have a small question.
>
> When using the SendMSG method of ESLConnection to playback a file, the
> below sequence of events is generated.
>
>
>
> Now my question is: is there a way to send some unique string with the
> sendmsg command and have that one appear in all the other events which are
> shown below.
>
> I need to track the events which share a relationship. CHANNEL_EXECUTE and
> CHANNEL_EXECUTE_COMPLETE contain a unique Application-UUID, which is good
> and could suffice, but I haven’t found a way where I can relate the sendmsg
> command back to these two events.
>
> I know there is the Unique-ID header, but I’d like every action to be
> uniquely identifiable.
>
>
>
> Is that possible or am I asking way too much?
>
>
>
> "Command":      "sendmsg c48f66c0-e5be-11e3-a832-551ac922334e",
>
> "Event-Subclass":            "c48f66c0-e5be-11e3-a832-551ac922334e",
>
> "call-command":              "execute",
>
> "execute-app-name":   "playback",
>
> "execute-app-arg":         "/usr/src/freeswitch/sounds/basic/welcome.wav",
>
> "event-lock":     "true",
>
> "Event-Name": "PRIVATE_COMMAND",
>
>
>
> "Event-Name": "CHANNEL_EXECUTE",
>
> "Application":    "playback",
>
> "Application-Data":         "/usr/src/freeswitch/sounds/basic/welcome.wav",
>
> "Application-UUID":       "ca0df0a8-e5be-11e3-a83e-551ac922334e"
>
>
>
> "Event-Name": "PLAYBACK_START",
>
> "Playback-File-Path":     "/usr/src/freeswitch/sounds/basic/welcome.wav",
>
>
>
> "Event-Name": "PLAYBACK_STOP",
>
> "Playback-File-Path":     "/usr/src/freeswitch/sounds/basic/welcome.wav",
>
> "Playback-Status":           "done"
>
>
>
> "Event-Name": "CHANNEL_EXECUTE_COMPLETE",
>
> "Application":    "playback",
>
> "Application-Data":         "/usr/src/freeswitch/sounds/basic/welcome.wav",
>
> "Application-Response":              "FILE PLAYED",
>
> "Application-UUID":       "ca0df0a8-e5be-11e3-a83e-551ac922334e"
>
> _________________________________________________________________________
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>
> 
> 
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