I think I have narrowed down the problem.  The Contact header available here is the original Contact header that was in the INVITE.  We are using an LCR service that sends back a 300 Multiple Choices with various contacts sorted by "q".  We are consuming the 300 using the uac_redirect module, but perhaps that isn't the only way to skin this cat.  Here is the flow:

Asterisk --> INVITE --> Kamailio --> INVITE --> LCR Service
LCR Service --> 300 Multiple Choices --> Kamailio --> INVITE --> Least Cost Carrier

The 300 Multiple Choices has the Contact headers that have the rates.  I want to use the acc module to log the rate with the CDR based on the carrier we are sending the call to.

I have attached my current config file so you can see what we are doing here.

Thanks,
Geoff


On Sat, Jun 29, 2013 at 8:48 AM, Geoffrey Mina <geoffreymina@gmail.com> wrote:
Igor,
I have successfully migrated to Kamailio 4.0 so I can use the function as you defined.  I am getting back a "0" instead of the actual rate though.  The only difference I can see is that my "q" and "rate" are outside of the angle brackets in the Contact header:

Yours: Contact: sip:sipp@[local_ip]:[local_port];q=0.1;rate=0.002

Mine: Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.001;rate=0.002000

Would there be a different way to address the rate attribute if it is outside the URI?


On Fri, Jun 28, 2013 at 12:46 AM, I.Pavlov <ip@izhnet.ru> wrote:

Hi Geoff, to grab “rate”-attribute try to use “$sel(contact.params["rate"]);”-expression. For example, in my test with sipp, I used Contact: sip:sipp@[local_ip]:[local_port];q=0.1;rate=0.002 and

 

$var(rate)=$sel(contact.params["rate"]);

xlog("CONTACT URI PARAMS: $var(rate)");

 

/usr/sbin/kamailio[25909]: ERROR: <script>: CONTACT URI PARAMS: 0.002

 

Next, you can try to log $var(rate) with acc like this: acc_log_request(“RATE: $var(rate)”);

 

-----

Igor Pavlov

 

From: sr-users-bounces@lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Geoffrey Mina
Sent: Thursday, June 27, 2013 9:55 PM
To: kamailio
Subject: [SR-Users] Consuming 300 Multiple Choices

 

Greetings,

I am looking for a way to get some extra information out of the Contact header when consuming a multiple choices response.  I am using uac_redirect to populate the branches. 

get_redirects("*");
t_load_contacts();
t_next_contacts();
       
t_on_failure("2");
t_relay();

In my failure_route[2] I am just doing:

t_next_contacts();

t_on_failure("2");
t_relay();

In my Multiple Choices packet, I am getting some additional information that I would like to log using the acc module.  There is a "rate" attribute that defines how much the outbound leg is going to cost to terminate.  Here is how the packet looks:

SIP/2.0 300 Multiple Choices
Via: SIP/2.0/UDP X.X.X.X;branch=z9hG4bK6213.a6567804.0
Via: SIP/2.0/UDP X.X.X.X;branch=z9hG4bK6213.a6c73fe6.0
Via: SIP/2.0/UDP X.X.X.X:5060;received=X.X.X.X;branch=z9hG4bK61f266c4;rport=5060
Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.001;rate=0.002000
Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.002;rate=0.009850
Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.003;rate=0.009850
Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.004;rate=0.009850
Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.005;rate=0.009850
Contact: <sip:9546496708@X.X.X.X;npdi>;q=0.006;rate=0.009850
To: <sip:19546496708@X.X.X.X>
From: "7203355925" <sip:7203355925@X.X.X.X>;tag=as5927da08
Call-ID: 3eb09e772e32e18c1fe926230802818c@X.X.X.X
CSeq: 102 INVITE
Server: Routing Server
Content-Length: 0

How would I grab that attribute and log it using acc?

Thanks,
Geoff


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