Re: [sr-dev] [SR-Users] Kamailio Transformation Assignment to an AVP

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@gmail.com mailto:miconda@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@cryy.com <mailto:brandon@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@gmail.com>
<mailto:miconda@gmail.com>
*Date: *Tue, 27 Jul 2010 11:50:36 +0200
*To: *Brandon Armstead<brandon@cryy.com> <mailto:brandon@cryy.com>
*Cc: *<users@lists.kamailio.org>
<mailto:users@lists.kamailio.org>; <devel@lists.kamailio.org>
<mailto:devel@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


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



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-- 
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