script for sip? or pjsip #5

pergolafabio · 2022-06-14T18:07:54Z

pergolafabio
Jun 14, 2022

Am i correct that your script is based on chan_sip and not pjsip?
I'm unable to find the pn-tok anymore, i'm not sure if it saved again in asterisk?

do you still use your script?

brianjmurrell · 2022-06-15T03:24:40Z

brianjmurrell
Jun 15, 2022
Maintainer

Am i correct that your script is based on chan_sip and not pjsip?

No. I use pjsip now and have for a long time. This script was never functional for chan_sip.

do you still use your script?

Yes.

0 replies

pergolafabio · 2022-06-15T05:34:08Z

pergolafabio
Jun 15, 2022
Author

Ah, can you show me your dialplan how to use it? As an example... I have a while loop, I send first a curl, then while loop starts, when extension is registerd, it starts dialing... I check the hangup_cause keys in asterisk...

The only part missing in my dialplan is to retrieve the pn-tok, I have that now hardcoded

Thnx

1 reply

brianjmurrell Jun 15, 2022
Maintainer

Ah, can you show me your dialplan how to use it?

Using AEL, I have a context defined:

macro expand_exten(ext) {
    Set(newext=);
    while ("${ext}" != "") {
        Set(e=${SHIFT(ext,&)});
        if ("${e:0:5}" = "PJSIP" && ${REGEX("outgoing" ${e})} = "") {
            Set(e=${PJSIP_DIAL_CONTACTS(${STRREPLACE(e,PJSIP/,)})});
        }
        if ("${e}" != "") {
            Set(newext=${newext}${e}&);
        }
    }
    // blech!  global variables because there no way to make a
    // function/gosub/etc that returns a value
    Set(newext=${newext:0:-1});
    Return(${newext});
    return;
}

context mobiles {
    h => { NoOp("Got h extension, not doing Hangup()"); }
    _. => {
        &expand_exten(${SIP}/${EXTEN});
        Set(dialexts=${GOSUB_RETVAL});
        AGI(/usr/share/asterisk/agi-bin/push.sh,${dialexts});
        Dial(${dialexts},30,tw);
    }
}

I can then just use that context in a Dial():

exten => s2,n,Dial(Local/brian@mobiles&...,20,tw)

This allows the push+dial to happen for a push device in a separate "thread" so that all of the time it takes to push doesn't hold up dialling other extensions that can dial immediately.

pergolafabio · 2022-06-15T08:44:57Z

pergolafabio
Jun 15, 2022
Author

also a part of the script is not clear to me... when i register with linhome ... i dont see a pn-tok when i do a "database show register"

d=($(asterisk -r -x "database show registrar" | 
     sed -ne "/^\/registrar\/contact\/$EXT\;/s/.*{\"via_addr\":\"\([^\"]*\)\".*pn-tok=\([^\;]*\);.*/\1 \2/p" |
 sort -u))

2 replies

brianjmurrell Jun 15, 2022
Maintainer

also a part of the script is not clear to me... when i register with linhome

I'm assuming you mean linphone, not linhome...

... i dont see a pn-tok when i do a "database show register"

I think it's called pn-prid now:

# asterisk -r -x "database show registrar"  | grep brian
/registrar/contact/brian_brian6;@[redacted]: {"via_addr":"10.75.24.135","qualify_timeout":"3.000000","call_id":"FM-AL~GFmT","reg_server":"pbx.example.com","prune_on_boot":"no","path":"","endpoint":"brian","via_port":"42154","authenticate_qualify":"no","uri":"sip:[email protected]:42154;transport=tcp;pn-prid=[redacted];pn-provider=fcm;pn-param=[redacted];pn-silent=1;pn-timeout=0","qualify_frequency":"0","user_agent":"LinphoneAndroid/4.6.9.26.1+766ad2387 ([redacted]) LinphoneSDK/5.1.41 (tags/5.1.41^0)","expiration_time":"1686852909","outbound_proxy":""}

It's likely I need to upload the latest version of my script to this repo. Let me check...

brianjmurrell Jun 15, 2022
Maintainer

Yeah, it was way out of date. I have updated with the most recent changes.

pergolafabio · 2022-06-15T18:46:10Z

pergolafabio
Jun 15, 2022
Author

Hi, thn for feedback
no there is also "linhome", its a basic version of linphone, but more for intercom purposes... more then enough
i noticed there was also no pr-prid , when i do a "database show registrar"

1 reply

brianjmurrell Jun 15, 2022
Maintainer

no there is also "linhome", its a basic version of linphone, but more for intercom purposes...

Do you know if/that it supports Google FCM push notifications? Do you have that option enabled if it does?

pergolafabio · 2022-06-15T18:50:25Z

pergolafabio
Jun 15, 2022
Author

i tried registering a linphone and a linhome, both dont show the pn-prid , i dont get it why you see it

3e533915-asterisk*CLI> database show registrar
/registrar/contact/6001;@4d3412fe5d13dcf1018b6e4cddc06870: {"via_addr":"192.168.0.168","qualify_timeout":"3.000000","call_id":"iqimYu1viq","reg_server":"","prune_on_boot":"no","path":"","endpoint":"6001","via_port":"47072","authenticate_qualify":"no","uri":"sip:[email protected]:47072;gr=urn:uuid:dc8ec1c3-a68f-00bf-be2c-bf26a3815d9e;x-ast-orig-host=sip.linhome.org:0","qualify_frequency":"30","user_agent":"Linhome/5.0.0 (OnePlus 6T) LinphoneSDK/5.2.0-alpha.199+1355eaf (pipelines/48092)","expiration_time":"1655326066","outbound_proxy":""}
/registrar/contact/6001;@f62492c53c0fb50c0cccd45cd8271345: {"via_addr":"192.168.0.168","qualify_timeout":"3.000000","call_id":"YDF7KLITXP","reg_server":"","prune_on_boot":"no","path":"","endpoint":"6001","via_port":"48410","authenticate_qualify":"no","uri":"sip:[email protected]:48410","qualify_frequency":"30","user_agent":"LinphoneAndroid/4.6.10 (OnePlus 6T) LinphoneSDK/5.1.42 (tags/5.1.42^0)","expiration_time":"1655322510","outbound_proxy":""}

1 reply

brianjmurrell Jun 15, 2022
Maintainer

i tried registering a linphone and a linhome, both dont show the pn-prid , i dont get it why you see it

As asked prior, do you have push notifications enabled on them, or linphone at least? I don't think it's enabled by default for non-linphone.org SIP accounts and you have to actively enable it yourself through the setup menus.

pergolafabio · 2022-06-15T18:59:59Z

pergolafabio
Jun 15, 2022
Author

Yes, I have the token in the app, I can send a push method to it.. very strange I don't see it , thnx for updating the repo, will have a look later!

1 reply

brianjmurrell Jun 15, 2022
Maintainer

Yes, I have the token in the app, I can send a push method to it..

And both linphone and linhome respond to the push?

very strange I don't see it , thnx for updating the repo, will have a look later!

I guess you will have to ask the linphone devs why you would not be seeing the pn-prid. I assume you have a locally built linhome/linphone with your own Google FCM credentials in it [1], yes?

[1] Which, indeed, is totally annoying -- it would be much better if push credentials could be configured at run-time so that users could configure their own push systems without building from source.

pergolafabio · 2022-06-15T20:11:34Z

pergolafabio
Jun 15, 2022
Author

ok, indeed push was not enabled on linphone, now i see the token (pn-prid) :-)
strange that its not there for Linhome, not sure how they are doing it on their flexisip then

If i take the token from the app and do below: (using my own google-services.json)

same => n,Set(CURL_RESULT=${SHELL(curl -X POST --header "Authorization: key=APIKEU" --Header "Content-Type: application/json" -d '{"to":"TOKEN","priority":"high"}' https://fcm.googleapis.com/fcm/send)})

the app is then registering...

....

damn, thats a big update on your script, didnt have a chance to look at it :-)
But you are storing the tokens somewhere in a temp database? because on unregisterer, the token is gone from asterisk , right?

1 reply

brianjmurrell Jun 15, 2022
Maintainer

strange that its not there for Linhome, not sure how they are doing it on their flexisip then

Yeah, I don't know anything about linhome.

If i take the token from the app and do below: (using my own google-services.json)

same => n,Set(CURL_RESULT=${SHELL(curl -X POST --header "Authorization: key=APIKEU" --Header "Content-Type: application/json" -d '{"to":"TOKEN","priority":"high"}' https://fcm.googleapis.com/fcm/send)})

the app is then registering...

Cool. But that's just the camel's nose under the tent. You have to wait for the registration to complete before you can send a call to the phone, which is the biggest part of what the script does -- along with handling already-registered devices -- that don't actually need a push sent to them.

damn, thats a big update on your script,

Indeed, it is. And it really is pushing the limits of what can (should perhaps) be done in shell script. It's probably ripe for rewriting in a more appropriate language like Python perhaps.

But you are storing the tokens somewhere in a temp database?

No. Asterisk does that already, in the registrar database. That's why the script queries that database, to get the token -- well to see if the device is even still REGISTERed (and push to it if it's not so that a token is stored when it does REGISTER) get the token if/when it is.

because on unregisterer, the token is gone from asterisk , right?

That's right. And shouldn't be used until the device REGISTERs again, so there is no point in storing it anywhere.

pergolafabio · 2022-06-16T04:45:34Z

pergolafabio
Jun 16, 2022
Author

Well, that's confusing me, how do you send the push if you don't know the token...
When my device register again, the token is the same...

So what I do I dialplan, when device is unregistered, I send the push curl anyway, indeed call fails, I check that with the hangupcause keys in asterisk, but I start a while loop, if call fails, I try calling again for xx loops...
Then register comes in, and call succeeds...

So I need to store that token somewhere :+)

1 reply

brianjmurrell Jun 16, 2022
Maintainer

Well, that's confusing me, how do you send the push if you don't know the token...

Please read the script. It answers all of the questions. The token that the device REGISTERs with is not the same as the key that is used to send the push.

When my device register again, the token is the same...

Perhaps. Even likely. But the token is no good until the device registers.

So I need to store that token somewhere :+)

If that's what your process requires... Obviously mine doesn't.

pergolafabio · 2022-06-16T05:25:12Z

pergolafabio
Jun 16, 2022
Author

Also, you say you are sending the push, if you see it registered in the database.. if it's registered, then normal no push is needed anyway??

I have turned on the qualify setting, so when app closes, I see the registered device going away from the database

Basically, my database is always empty... That's why I do that curl... Wait for register and then dial

1 reply

brianjmurrell Jun 16, 2022
Maintainer

Also, you say you are sending the push, if you see it registered in the database..

No, I am not saying that. Again, please read and understand the script. It answers all of the questions. If it is registered in the database, (in theory) you do not need to push. My script does it anyway, but doesn't wait for the registration as it does when it pushes when there is no current registration.

if it's registered, then normal no push is needed anyway??

Correct. As I said. My script does it anyway, but doesn't wait for the REGISTER since it's already registered.

pergolafabio · 2022-06-16T13:04:51Z

pergolafabio
Jun 16, 2022
Author

Ok @brianjmurrell , thnx for all feedback, appreciated!

I'm also testing another road, i register my linphone/linhome clients, on the free flexisip server
in asterisk i setup a trunk for inbound/outbound call using an flexisip account

Advantage:
no port forwarding needed to asterisk
push also works, no fancy scripts needed :-)

6 replies

pergolafabio Jun 16, 2022
Author

If you can get the flexisip server to be a proxy (i.e. Asterisk -> Flexisip -> push client such as linphone) for push devices I'd be really interested in seeing your flexisip configuration. I tried to go down that path and could never get flexisip to work nor could I get any help from the linphone devs on getting it to work.

Yes, I already used that for a while, works very good... All softphones are registered on free flexisip server...

I just forward my locals calls to the flexisip server, the flexiservers then send a push to the registered softphones...

Also incominng calls are working, but I don't use that

pergolafabio Jun 16, 2022
Author

The advantage is also that you are calling the (trunk) you see it ringing... Untill flexi sends the push and then you see the incoming call....
It's a free service and works very good

brianjmurrell Jun 16, 2022
Maintainer

Could you post your flexisip configuration, scrubbed of sensitive information of course?

pergolafabio Jun 16, 2022
Author

Will do it later today , enjoying now a glass of wine outside :+)

pergolafabio Jun 16, 2022
Author

But I use the free cloud flexi server, not a local one (yet)

pergolafabio · 2022-06-16T13:14:09Z

pergolafabio
Jun 16, 2022
Author

i was also testing more with linhome, and the behaviour is different, there is indeed no pn-prid token
Only linphone does that in combination with the SDK (background feature)

What linhome does, as soon you register on asterisk, it uses sip.linhome.org as proxy, so when you unregister, you still see proxy registered on the system

0 replies

pergolafabio · 2022-06-16T20:29:42Z

pergolafabio
Jun 16, 2022
Author

hey, here is what i do, i first register an account 'aaaaa' on subscribe.linhome.org, but if you use linphone, then use: subscribe.linphone.org
The account registered, i use as trunk below for outgoing calls, but can also be used for incoming calls as well...


[trunk-linhome-auth]
type=auth
auth_type=userpass
password=XXX-
username=aaaaaa

[trunk-linhome-aor]
type=aor
contact=sip:sip.linhome.org
;qualify_frequency=30

[trunk-linhome-registration]
type=registration
outbound_auth=trunk-linhome-auth
server_uri=sip:sip.linhome.org
client_uri=sip:[email protected]
retry_interval=30
 
[trunk-linhome]
type=endpoint
context=default
disallow=all
allow=ulaw,alaw
allow=h264,vp8
outbound_auth=trunk-linhome-auth
aors=trunk-linhome-aor
from_domain=sip.linhome.org
direct_media=yes
 
[trunk-linhome-identify]
type=identify
endpoint=trunk-linhome
match=sip.linhome.org

afterwards, i create extra accouns for my softphone users, i register them , but you need to use the playstore version or the google-services.json they forgot to exclude on their github :-)

exten => bbbb,1,NoOp()
 same => n,Progress()
 same => n,Set(CALLERID(num)=aaaaa)
 same => n,Dial(PJSIP/bbbb@trunk-linhome)

no fancy scripts needed, no port forward needed to asterisk, just using the push from their free flexisip server

0 replies

brianjmurrell · 2022-06-16T23:17:30Z

brianjmurrell
Jun 16, 2022
Maintainer

Yes, I know all about sip.linphone.org. I am not interested in having a third party handle my phone calls though. I don't want to be at the mercy of somebody else keeping a service running.

3 replies

pergolafabio Jun 17, 2022
Author

Ah ok, you can maybe also install your own flexisip as push gateway?

brianjmurrell Jun 17, 2022
Maintainer

#5 (reply in thread)

If you are successful at a local flexisip, please do post your config.

pergolafabio Jun 17, 2022
Author

will do, but not planned atm

Provide feedback

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