[SR-Users] Send SIP Info within a dialog using $uac_req(method)="INFO"

[Jonathan Hunter]

Hi,

I am just testing with the mi t_uac_dlg command, and I am trying to create an additional header, which is sent in the SIP INFO message and actually contains double quotes.

So in my kamailio.cfg script file I set the variable;


$var(testjon8) = "p1=\"STOP\"";

xlog("L_INFO","We are going to try and use $var(testjon8)\n");

And when seeing in the logs I see it states;

We are going to try and use p1="STOP"

And p1="STOP" is exactly what I want.

However when I generate the SIP INFO message, and check on the wire using wireshark I see;

Event:p1=STOP

So it doesnt have the double quotes I would like.

How can I escape them so the t_uac_dlg command includes them?

The portion where this header is generated in the command is;


exec_avp("kamctl mi t_uac_dlg INFO $dlg(to_uri) . . \\\"From:'$var(testjon)'\"\\r\\nTo:$var(testjon2)\\r\\nCall-ID:$var(testjon3)\\r\\nAllow:$var(Allow)\\r\\nContact:$var(testjon4)\\r\\nEvent:$var(testjon8)\\r\\n\\\"\"", "$avp(test)");



And also running debug I see it as Event:p1="STOP"\r\n\""


Can you tell me how I can escape " so its actually within the SIP header itself?

Many thanks

Jon



________________________________
From: sr-users <sr-users-bounces at lists.sip-router.org> on behalf of Jonathan Hunter <hunterj91 at hotmail.com>
Sent: 25 November 2016 18:55
To: Kamailio SER - Users Mailing List; miconda at gmail.com
Subject: Re: [SR-Users] Send SIP Info within a dialog using $uac_req(method)="INFO"


Hi Daniel,


Great thanks very much, will give it a try.


Jon


________________________________
From: Daniel-Constantin Mierla <miconda at gmail.com>
Sent: 22 November 2016 18:46
To: Jonathan Hunter; Kamailio SER - Users Mailing List
Subject: Re: [SR-Users] Send SIP Info within a dialog using $uac_req(method)="INFO"


Hello,


got a bit of time to look at the code and discovered that there is a rpc command tm.t_uac_start added by ser guys that might get you moving forward. It is not waiting for the reply of the generated request and you can use it with json rpc exec function in the config, so it avoids using exec.


Can you give it a try?


Some documentation can be found in the comments of the function used by this command:

  - https://github.com/kamailio/kamailio/blob/master/modules/tm/rpc_uac.c#L399

Cheers,
Daniel


On 22/11/2016 18:35, Jonathan Hunter wrote:

Hi Daniel,


Thanks here you go;


[root at POC_ProxyA kamailio]# kamctl mi t_uac_dlg INFO sip:3003 at 193.144.1.112 . udp:10.70.1.136:5060    \"From:sip:1234 at 8.8.8.8"\r\nTo:sip:3003 at 193.144.1.112\r\nContact:sip:daemon at 8.8.8.8\r\n\""
404 Invalid local socket
[root at POC_ProxyA kamailio]# VERBOSE=1 kamctl mi t_uac_dlg INFO sip:3003 at 193.144.1.112 . udp:10.70.1.136:5060    \"From:sip:1234 at 8.8.8.8"\r\nTo:sip:3003 at 193.144.1.112\r\nContact:sip:daemon at 8.8.8.8\r\n\""
database engine 'MYSQL' loaded
Control engine 'FIFO' loaded
entering fifo_cmd t_uac_dlg INFO sip:3003 at 193.144.1.112 . udp:10.70.1.136:5060 "From:sip:1234 at 8.8.8.8
To:sip:3003 at 193.144.1.112
Contact:sip:daemon at 8.8.8.8
"
404 Invalid local socket
FIFO command was:
:t_uac_dlg:kamailio_receiver_23469
INFO
sip:3003 at 193.144.1.112
.
udp:10.70.1.136:5060
"From:sip:1234 at 8.8.8.8
To:sip:3003 at 193.144.1.112
Contact:sip:daemon at 8.8.8.8
"


Thanks


Jon


Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 28-30, 2016 - http://www.asipto.com
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