[asterisk-bugs] [JIRA] (ASTERISK-21983) Odd events during Stasis origination

[Matt Jordan (JIRA)]

Matt Jordan created ASTERISK-21983:
--------------------------------------

             Summary: Odd events during Stasis origination
                 Key: ASTERISK-21983
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21983
             Project: Asterisk
          Issue Type: Bug
          Components: Core/Stasis, Resources/res_stasis_http
    Affects Versions: 12
            Reporter: Matt Jordan


Originating a channel from Stasis to an endpoint results in the following messages:

{noformat}
{
  "application": "hello",
  "stasis_start": {
    "args": [],
    "channel": {
      "accountcode": "",
      "appl": "Stasis",
      "caller": {
        "name": "",
        "number": ""
      },
      "connected": {
        "name": "",
        "number": ""
      },
      "creationtime": "2013-06-27T14:18:42.908-0500",
      "data": "hello",
      "dialplan": {
        "context": "demos",
        "exten": "s",
        "priority": 1
      },
      "hangupsource": "",
      "linkedid": "1372360722.16",
      "name": "Gulp/1000-00000008",
      "parkinglot": "",
      "peeraccount": "",
      "state": "Up",
      "uniqueid": "1372360722.16",
      "userfield": ""
    }
  }
}
{noformat}

Okay, that's useful, we entered into the application.

{noformat}
{
  "application": "hello",
  "channel_snapshot": {
    "channel": {
      "accountcode": "",
      "appl": "AppDial2",
      "caller": {
        "name": "",
        "number": ""
      },
      "connected": {
        "name": "",
        "number": ""
      },
      "creationtime": "2013-06-27T14:18:42.908-0500",
      "data": "(Outgoing Line)",
      "dialplan": {
        "context": "demos",
        "exten": "s",
        "priority": 1
      },
      "hangupsource": "",
      "linkedid": "1372360722.16",
      "name": "Gulp/1000-00000008",
      "parkinglot": "",
      "peeraccount": "",
      "state": "Up",
      "uniqueid": "1372360722.16",
      "userfield": ""
    }
  }
}
{noformat}

Well, that's weird, we now just blew away the dialplan application "Stasis" and replaced it with "AppDial2".

This is really the effect of something the dial API does - it creates a "dummy" application for originated channels. Unfortunately, this "dummy" application has no context and no meaning for us, particularly since it occurs after the {{stasis_start}} event.

We either shouldn't raise the {{stasis_start}} until after this event is received by ARI (which means this event would never be sent out), or we should explicitly kill "AppDial" changes.

{noformat}

{
  "application": "hello",
  "channel_state_change": {
    "channel": {
      "accountcode": "",
      "appl": "AppDial2",
      "caller": {
        "name": "",
        "number": ""
      },
      "connected": {
        "name": "",
        "number": ""
      },
      "creationtime": "2013-06-27T14:18:42.908-0500",
      "data": "(Outgoing Line)",
      "dialplan": {
        "context": "demos",
        "exten": "s",
        "priority": 1
      },
      "hangupsource": "",
      "linkedid": "1372360722.16",
      "name": "Gulp/1000-00000008",
      "parkinglot": "",
      "peeraccount": "",
      "state": "Up",
      "uniqueid": "1372360722.16",
      "userfield": ""
    }
  }
}
{noformat}

This is also odd. We just raised {{channel_state_change}} message and the channel state didn't change.

{noformat}
{
  "application": "hello",
  "channel_snapshot": {
    "channel": {
      "accountcode": "",
      "appl": "Stasis",
      "caller": {
        "name": "",
        "number": ""
      },
      "connected": {
        "name": "",
        "number": ""
      },
      "creationtime": "2013-06-27T14:18:42.908-0500",
      "data": "hello",
      "dialplan": {
        "context": "demos",
        "exten": "s",
        "priority": 1
      },
      "hangupsource": "",
      "linkedid": "1372360722.16",
      "name": "Gulp/1000-00000008",
      "parkinglot": "",
      "peeraccount": "",
      "state": "Up",
      "uniqueid": "1372360722.16",
      "userfield": ""
    }
  }
}
{noformat}

And now we've reverted the application back to "Stasis".

I'd expect that we'd get at most two events - the {{stasis_start}} and a {{channel_state_change}} if we answered after entering the application - but really, I think we should only get one - the fact that the channel was handed off to Stasis, and that shouldn't occur until the channel is in the Stasis application.

Either that or we should never go through Originate mechanisms that exist today and Stasis should do its own origination.

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