[SR-Users] Kamailio Transformation Assignment to an AVP

[Daniel-Constantin Mierla]

Hello,

On 7/28/10 5:32 PM, Brandon Armstead wrote:
> Daniel,
>
>     When I take your example with the modified regex it works.  I 
> wonder if there is any association to using / as delimiter versus | 
> and the () match references?

hmm, might the / versus | in the way that you may need to use \\/ to 
escape it -- just try and let me know if solves something. I used | 
because I try to avoid escaping inside subst expressions and it works to 
use any character you want (same like in sed tool - the character used 
on first position is considered delimiter and has to be escaped when is 
not).

Cheers,
Daniel

>
> Sincerely,
> Brandon Armstead
>
> On Wed, Jul 28, 2010 at 3:23 AM, Daniel-Constantin Mierla 
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>     Hello,
>
>     I tested with:
>
>         xlog("===============================+++: [$rb]\n");
>         $var(b) = $rb;
>         $var(c) = $(rb{re.subst,|.*m=audio [0-9]+ RTP/AVP ([0-9
>     ]+).+|\1|s});
>         # $var(c) = $(var(b){re.subst,|.*m=audio [0-9]+ RTP/AVP ([0-9
>     ]+).+|\1|s});
>         xlog("===============================+++: [$rb]\n");
>         xlog("==================================: [$var(c)]\n");
>
>     and everything looked fine. Could be something specific for your
>     config or environment, what is content-length of your invite?
>
>     Cheers,
>     Daniel
>
>
>
>     On 7/27/10 9:44 PM, brandon at cryy.com <mailto:brandon at cryy.com> wrote:
>>     Daniel,
>>
>>     I've also tried with script vars. I think it has something to do
>>     with the actual dynamic psuedo variable $rb. Var assignment and
>>     mangling does not work for me either. I.e. Keep everything the
>>     same except $var(test) = $rb and so on. Let me know if this makes
>>     sense.
>>
>>     Sincerely,
>>     Brandon Armstead
>>
>>     *Forgot to reply to ALL (resending)
>>
>>     Sent from my Verizon Wireless BlackBerry
>>
>>     ------------------------------------------------------------------------
>>     *From: * Daniel-Constantin Mierla <miconda at gmail.com>
>>     <mailto:miconda at gmail.com>
>>     *Date: *Tue, 27 Jul 2010 11:50:36 +0200
>>     *To: *Brandon Armstead<brandon at cryy.com> <mailto:brandon at cryy.com>
>>     *Cc: *<users at lists.kamailio.org>
>>     <mailto:users at lists.kamailio.org>; <devel at lists.kamailio.org>
>>     <mailto:devel at lists.kamailio.org>
>>     *Subject: *Re: [SR-Users] Kamailio Transformation Assignment to
>>     an AVP
>>
>>     Hello,
>>
>>     interesting, when I troubleshooted before your previous report, I
>>     used this piece of cfg:
>>
>>     xlog("==================================\n");
>>     $var(b) =
>>     "v=0\r\n"
>>     "o=- 5 2 IN IP4 192.168.3.100\r\n"
>>     "s=CounterPath Bria\r\n"
>>     "c=IN IP4 174.37.XX.XXX\r\n"
>>     "t=0 0\r\n"
>>     "m=audio 64192 RTP/AVP 107 0 8 18 101\r\n"
>>     "a=sendrecv\r\n"
>>     "a=rtpmap:107 BV32/16000\r\n"
>>     "a=rtpmap:18 G729/8000\r\n"
>>     "a=fmtp:18 annexb=yes\r\n"
>>     "a=rtpmap:101 telephone-event/8000\r\n"
>>     "a=fmtp:101 0-15\r\n"
>>     "a=nortpproxy:yes\r\n";
>>
>>     $var(c) = $(var(b){re.subst,|.*m=audio [0-9]+ RTP/AVP ([0-9
>>     ]+).+|\1|s});
>>     xlog("==================================: [$var(c)]\n");
>>
>>     And the xlog printed properly the value of $var(c) - meaning that
>>     it was assigned the right value. I will test with avps next time
>>     I have a chance.
>>
>>     Cheers,
>>     Daniel
>>
>>
>>     On 7/26/10 9:11 PM, Brandon Armstead wrote:
>>>     Hello,
>>>
>>>         I have the following transformation on the SDP Body:
>>>
>>>     $(rb{re.subst,/^(.*)m=audio ([0-9]+) RTP\/AVP ([0-9
>>>     ]+)\015\012(.*)$/\3/s})
>>>
>>>     However when I assign this to an AVP, i.e.
>>>
>>>     $avp(s:sdp-payloads) = $(rb{re.subst,/^(.*)m=audio ([0-9]+)
>>>     RTP\/AVP ([0-9 ]+)\015\012(.*)$/\3/s});
>>>
>>>     I receive back a NULL result / transformation "regex does not
>>>     match" is what I receive with high verbose syslog on kamailio.
>>>
>>>     HOWEVER.
>>>
>>>     When I do something like this:
>>>
>>>     xlog("L_INFO", "Payloads Available: $(rb{re.subst,/^(.*)m=audio
>>>     ([0-9]+) RTP\/AVP ([0-9 ]+)\015\012(.*)$/\3/s})");
>>>
>>>     It executes properly -- transformation regex matches and the
>>>     payloads are displayed as expected.
>>>
>>>     If anyone can provide any insight as to what I may be doing
>>>     wrong it would be greatly appreciated.
>>>
>>>     P.S. Kamailio SVN Revision # 2:5906M (1.5.2-notls).
>>>
>>>     Also I CC'ed devel list (as I do believe this may be a bug).
>>>
>>>     Thanks!
>>>
>>>     Sincerely,
>>>     Brandon Armstead
>>>
>>>
>>>     _______________________________________________
>>>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>>     sr-users at lists.sip-router.org  <mailto:sr-users at lists.sip-router.org>
>>>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>        
>>
>>     -- 
>>     Daniel-Constantin Mierla
>>     http://www.asipto.com/
>>        
>>
>>
>>     _______________________________________________
>>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>     sr-users at lists.sip-router.org  <mailto:sr-users at lists.sip-router.org>
>>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>        
>
>     -- 
>     Daniel-Constantin Mierla
>     http://www.asipto.com/
>          
>
>

-- 
Daniel-Constantin Mierla
http://www.asipto.com/

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