How to get aricpp working for outgoing calls?

[medvel]

Hello,

I played a lot with "high level dial" sample but couldn't make it working with outgoing calls.
I have something like following in extensions.conf:

exten => 9000,1,NoOp()
same => n,Stasis(my_app)
same => n,HangUp()

I was able to connect to asterisk and handle incoming calls to 9000 via OnStasisStarted in my_app. Everything works for incoming calls to 9000.
But when I make call from 9000 I can't enter Stasis application, so CalledCh() in the sample never gets called. I am able to catch other events like "channel created", "channel sate changed" for outgoing calls, but "stasis started" eventy never occurs.

How I can setup outgoing dialplan for 9000 to make sample working when I dial someone from controlled extension?

Please advise.

Thanks!

[daniele77]

Hi @medvel , I can't understand exactly what are you trying to achieve.
9000 is an "internal" extension, you can only use it as a destination for your calls.
Things that you can do with asterisk for outgoing calls are:

• let the ARI application place a call between two external endpoints (e.g., two softphones): the ARI application makes the first phone ring, then the second ring, and eventually it put the two in conversation
• let the ARI application call an external endpoint (e.g. a softphone): the phone ring and, after answer, the application can play a message to the phone

[medvel]

Thanks, Daniele, for the response!

Actually my question was - can we use ARI to catch and control outgoing calls from certain local numbers (for example only 9000)? May be I am not quite familiar with dialplan concept in Asterisk, so any advise on making ARI to handle outcoming calls will be appreciated.

As one of scenarios I want to let 9000 make free call to 9001, then make ARI to catch when 9001 channel is up, then call 9002 and finally put 9000, 9001 and 9002 to the bridge, but partially mute one of parties.

I supposed to use the following dialplan:

exten => _XXXX/9000,1,NoOp()
same => n,Stasis(my_app,${CALLERID},${EXTEN})
same => n,HangUp()

I expected the line "exten => _XXXX/9000,1,NoOp()" will work for any outcoming call from 9000 to any 4-digit numbers. Is that correct?
Then the next line ("same => n,Stasis(my_app,${CALLERID},${EXTEN}" ) should raise StasisStarted event and I will be able to handle outcoming call with your "high level dial" sample. Actually it enters to StasisStart handler, then CalledChannel(...) but call is not found in your sample:

void CalledChannel(const shared_ptr& calledCh)
{
auto call = FindCallByChannel(calledCh, ChMode::called);
if (call)
call->DialedChStart();
else
cerr << "Call with dialed ch id " << calledCh->Id() << " not found (stasis start event)\n";
}

I suggested the following logic in my ARI application:

• When BridgeCreated event is occured, we should have conversation between two parties (9000 and 9001).
• Then make ARI app to call from 9000 to 9002.
• When 9002 answers (how to catch this event in ARI?), add 9002 to the existing bridge with 9000 and 9001.
• Mute 9000 when it is needed due to some application logic.

I was able to achieve success for this scenario with using Originate and ConfBridge commands, but doing this way doesn't give me a chance to control the bridge from external application which is the goal. I didn't manage to find any suitable dialplan example for such 3 way conference controlled from external application. That's why I am looking at ARI and your library which I think is very nice.

One of my next questions is do I really need to use StasisStart event or I can just subscribe to ChannelCreated and BridgeCreated events and implement the logic explained above in my ARI application?

[daniele77]

I understand.
The library expects you don't have arguments to the dialplan stasis application (in this way, aricpp can discriminate between "internal" channels i.e., channels created by the library and "external" channels i.e., channels created by external events).
So, you should try this way:

exten => _XXXX/9000,1,NoOp()
same => n,Stasis(my_app)
same => n,HangUp()

[daniele77]

Ok, it's clear.

BTW: if you want to understand how ARI works, you can play a little with my other project: https://github.com/daniele77/aritester It's a simple html/javascript page that shows you ARI events and provides buttons to send ARI commands to channels, bridges, and so on...

In any case, I wasn't able to find another C++ library like yours. Your library looks great and I am still going to use it.

Great. Please give me feedback.
Also, consider becoming a sponsor (heart button on top of the page), you can get prioritized answers and consultancies that way.

[medvel]

BTW: if you want to understand how ARI works, you can play a little with my other project: https://github.com/daniele77/aritester It's a simple html/javascript page that shows you ARI events and provides buttons to send ARI commands to channels, bridges, and so on...

That should be very useful application. However I wasn't able to launch it on my Asterisk. I followed instructions on its Github main page but browser says "URL not found" when I connect to http://my_host:8088/static/aritester.html. Http module is working but there is no luck with aritester.html.

[daniele77]

First thing, try using the IP address of asterisk in the URL you're using.
Then, try to see if you can browse other static content hosted in asterisk.

Last chance: you can put the page aritester.html somewhere on your PC, change the line 532:

// tester.ip = IP;
tester.ip = "192.168.0.10";   // <=== here put the IP address of your asterisk machine

and double click on the file: the browser should open the page that connects to your asterisk machine...

[medvel]

First thing, try using the IP address of asterisk in the URL you're using.

I use Ip address.

Then, try to see if you can browse other static content hosted in asterisk.

I do not see any static content. It seems my installation on Ubuntu doesn't have static files except aritester.html.

Last chance: you can put the page aritester.html somewhere on your PC, change the line 532:

I changed tester.ip to my IP. But it still doesn't work. As I can see from console, websocket is not opened, because ip is unknown. I changed lines 527-535 to

function doLogin() {
var ip = "192.168.88.79";
var user = "asterisk";
var psw = "asterisk";
var app = "attendant";

tester.ip = "192.168.88.79";
tester.user = "asterisk";
tester.psw = "asterisk";
tester.app = "attendant";

But web socket is still not connected:

aritester.html:537 WebSocket connection to 'ws://192.168.88.79/ari/events?api_key=asterisk:asterisk&app=attendant&subscribeAll=true' failed:

[medvel]

I managed to get back to aritest.html and make it working. The issue was I used asterisk deb package from Ubuntu repository. Everything is working after recompiling asterisk by myself.

[medvel]

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