[sr-dev] Fwd: Create multiple profiles using dialog module

Rahul MathuR rahul.ultimate at gmail.com
Wed Jun 4 08:03:17 CEST 2014


HI Carlos,

Thanks for reply.

In my case the key is SIP Server IP. My kamailio Proxy is connected to many
sip server IPs say 5. I want to limit maximum channels per sip server ip.
So I set max channels per sip server ip as
cnxcc_set_max_channels("$var(client1)", "$var(max_chan)"); and my
$var(client1) = "10.97.116.36"; is one of 5 sip servers connected to
Kamalio.

Now I use your cnxcc_get_channel_count("$rd", "$var(count1)"))
value(count1) to compare to the max_limit of the channels allowed for this
sip server. Psuedo Variable $rd is coming correctly that is same as sips
erver IP[$var(client1)].
But the problem is that cnxcc_get_channel_count("$rd", "$var(count1)"))  is
always setting the value 1 in $var(count1) variable even though there are
more calls runnning than what was set to be max_chan (which was 100 in my
case).

Any pointers to achieve this matter ?





On Tue, Jun 3, 2014 at 2:18 PM, Carlos Ruiz Díaz <carlos.ruizdiaz at gmail.com>
wrote:

> Hi Rahul,
>
> I don't understand your example. In that case, you are always using "10.97.116.36"
> as key, meaning that all calls will be hanging from same root.
>
> If you want to use the request-uri domain part, use $rd, not the full $ru.
> This will of course lead to 1 call being reported always, since
> request-URIs tend to be different from each other.
>
> Regards,
> Carlos
>
>
>
>
> On Tue, Jun 3, 2014 at 7:01 AM, Rahul MathuR <rahul.ultimate at gmail.com>
> wrote:
>
>> Hi Carlos,
>>
>> Sorry for coming late on this one.
>>
>> the ruri value in my example is '10.97.116.36'
>> and i have tried to configure kamailio to only cater 100 simultaneous
>> calls on this SIP Server (10.97.116.36), after that it is to send 403.
>>
>> Below is the sample logic from kamailio.cfg
>>
>> ***********************************************************************************************************************
>>   #Below lines to show an example of how I am maintaining the business
>> for Concurrent Call Restriction
>>   route[CNXCC]
>>   {
>>
>>           $var(client1)           = "10.97.116.36";
>>    $var(max_chan)   = 100;
>>   #!ifdef CNXCC_CHANNEL
>>           xlog("L_INFO", "Setting up channel based credit control");
>>
>>           $var(max_chan1) = 0;
>>           $var(retcode)   = cnxcc_set_max_channels("$var(client1)",
>> "$var(max_chan)");
>>
>>           if ($var(retcode) == -1) {
>>                   xlog("Error setting up credit control");
>>                   return;
>>           }
>>
>>           $var(count1)     = -1;
>>
>>           if (!cnxcc_get_channel_count("$rd", "$var(count1)")) {
>>                   xlog("Error getting customer's channel count");
>>           }
>>           xlog("RAHUL : CNXCC ROUTE: $var(client1) has $var(count1)
>> call(s)");
>>           xlog("L_INFO", "CNXCC ROUTE: $var(client1) has $var(count1)
>> call(s)");
>>
>>
>>           if ($var(count1) == $var(max_chan1)) {
>>                   xlog("Too many channels for customer");
>>                   sl_send_reply(403, "Forbidden");
>>
>>                    exit;
>>           }
>>   #!endif
>>
>> ******************************************************************************************************************************************************
>>
>> Now the problem that I am facing is that with multiple UACs (all with
>> same ruri - 10.97.116.36) dialing some pstn numbers, the value of "count1"
>> remains 1 for all cases. Hence, my purpose is defeated because the
>> restriction is not being laid and more than 'max_chan' no. of callers are
>> able to make the call.
>>
>> Could you please help me achieve this goal.
>>
>> Thanks !
>>
>>
>>
>> On Sat, May 17, 2014 at 2:22 AM, Carlos Ruiz Díaz <
>> carlos.ruizdiaz at gmail.com> wrote:
>>
>>> max_chan is equal to zero? You should put a positive value in here in
>>> order to make sense the function call.
>>>
>>> Also, you are using for one call the ID "x.y.z.a", and for the other one
>>> $rd. Both should be the same for calls that suppose to be organized in the
>>> same group.
>>>
>>> Please take a look at the docs.
>>>
>>>
>>> On Fri, May 16, 2014 at 7:52 PM, Rahul MathuR <rahul.ultimate at gmail.com>
>>> wrote:
>>>
>>>> Further, from the logs it seems that cnxcc_set_max_channels is
>>>> returning -1 and I have no idea why it is failing.
>>>>
>>>>
>>>> On Sat, May 17, 2014 at 5:48 AM, Rahul MathuR <rahul.ultimate at gmail.com
>>>> > wrote:
>>>>
>>>>> Hello Carlos,
>>>>>
>>>>> Many thanks for your help.
>>>>> I followed the steps you mentioned for CNXCC. But even after making
>>>>> the max. calls to 0, I am still able to connect the call. Below is the
>>>>> excerpt from kamailio.cfg
>>>>>
>>>>> request_route {
>>>>> setflag(DLG_FLAG);
>>>>> # per request initial checks
>>>>> route(REQINIT);
>>>>> # NAT detection
>>>>> route(NATDETECT);
>>>>> .
>>>>> .
>>>>> .
>>>>>
>>>>>         if (is_method("INVITE")) {
>>>>>                 route(CNXCC);
>>>>>         }
>>>>> }
>>>>>
>>>>> #Below lines added by Rahul for Concurrent Call Restriction
>>>>> route[CNXCC]
>>>>> {
>>>>>
>>>>>         $var(client1)           = "x.y.z.a";
>>>>>
>>>>> #!ifdef CNXCC_CHANNEL
>>>>>         xlog("L_INFO", "Setting up channel based credit control");
>>>>>
>>>>>         $var(max_chan1) = 0;
>>>>>         $var(retcode)   = cnxcc_set_max_channels("$var(client1)",
>>>>> "$var(max_chan)");
>>>>>
>>>>>         if ($var(retcode) == -1) {
>>>>>                 xlog("Error setting up credit control");
>>>>>                 return;
>>>>>         }
>>>>>
>>>>>         $var(count1)     = -1;
>>>>>
>>>>>         if (!cnxcc_get_channel_count("$rd", "$var(count1)")) {
>>>>>                 xlog("Error getting customer's channel count");
>>>>>         }
>>>>>         xlog("RAHUL : CNXCC ROUTE: $var(client) has $var(count)
>>>>> call(s)");
>>>>>         xlog("L_INFO", "CNXCC ROUTE: $var(client) has $var(count)
>>>>> call(s)");
>>>>>
>>>>>         if ($var(count1) == $var(max_chan1)) {
>>>>>                 xlog("Too many channels for customer");
>>>>>                 sl_send_reply(403, "Forbidden");
>>>>>
>>>>>                 #if (!cnxcc_terminate_all("$var(client)")) {
>>>>>                 #       xlog("Error terminating customer's calls");
>>>>>                 #}
>>>>>
>>>>>                 exit;
>>>>>         }
>>>>> #!endif
>>>>>
>>>>>
>>>>> Could you please guide me where am I doing wrong ?
>>>>>
>>>>>
>>>>> On Sat, May 17, 2014 at 3:01 AM, Carlos Ruiz Díaz <
>>>>> carlos.ruizdiaz at gmail.com> wrote:
>>>>>
>>>>>> Any pseudo variable should work.
>>>>>>
>>>>>> I don't exactly know how your business work, but I'd suggest that
>>>>>> instead of using from header domain, use the domain part of the
>>>>>> request-uri, $rd.
>>>>>>
>>>>>> Regards,
>>>>>> Carlos
>>>>>>
>>>>>>
>>>>>> On Fri, May 16, 2014 at 4:28 PM, Rahul MathuR <
>>>>>> rahul.ultimate at gmail.com> wrote:
>>>>>>
>>>>>>> Thank you very much Carlos !
>>>>>>>
>>>>>>> One last thing, can I use $fd in cnxcc_set_max_channels as below -
>>>>>>> cnxcc_set_max_channels("$fd", "$var(max_chan)");
>>>>>>> to restrict the simultaneous calls hitting a particular domain ?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Sat, May 17, 2014 at 2:03 AM, Carlos Ruiz Díaz <
>>>>>>> carlos.ruizdiaz at gmail.com> wrote:
>>>>>>>
>>>>>>>> Create a profile [1], and count the number of calls of that profile
>>>>>>>> [2].
>>>>>>>>
>>>>>>>> Alternatively, you can use cnxcc module [3].
>>>>>>>>
>>>>>>>> [1]
>>>>>>>> http://kamailio.org/docs/modules/stable/modules/dialog.html#idp1919576
>>>>>>>> [2]
>>>>>>>> http://kamailio.org/docs/modules/stable/modules/dialog.html#idp1964064
>>>>>>>> [3]
>>>>>>>> http://kamailio.org/docs/modules/stable/modules/cnxcc.html#idp132608
>>>>>>>>
>>>>>>>>
>>>>>>>> On Fri, May 16, 2014 at 3:28 PM, Rahul MathuR <
>>>>>>>> rahul.ultimate at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> *Hello,*
>>>>>>>>>
>>>>>>>>> *Please accept my apologies for asking a simple question - Is there any example which shows how can I create the dialog profile **value based on the SIP domain or SIP Server IP (IP like- 112.23.134.5). I** need to control many SIP Server IPs with limited channels to each with my** Kamailio Proxy.*
>>>>>>>>>
>>>>>>>>> *I am a newbie to kamailio world.*
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> *-- Warm Regds.MathuRahul*
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> sr-dev mailing list
>>>>>>>>> sr-dev at lists.sip-router.org
>>>>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Carlos
>>>>>>>> http://caruizdiaz.com
>>>>>>>> http://ngvoice.com
>>>>>>>> +52 55 3048 3303
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> sr-dev mailing list
>>>>>>>> sr-dev at lists.sip-router.org
>>>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Warm Regds.
>>>>>>> MathuRahul
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> sr-dev mailing list
>>>>>>> sr-dev at lists.sip-router.org
>>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Carlos
>>>>>> http://caruizdiaz.com
>>>>>> http://ngvoice.com
>>>>>> +52 55 3048 3303
>>>>>>
>>>>>> _______________________________________________
>>>>>> sr-dev mailing list
>>>>>> sr-dev at lists.sip-router.org
>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Warm Regds.
>>>>> MathuRahul
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Warm Regds.
>>>> MathuRahul
>>>>
>>>> _______________________________________________
>>>> sr-dev mailing list
>>>> sr-dev at lists.sip-router.org
>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>>
>>>>
>>>
>>>
>>> --
>>> Carlos
>>> http://caruizdiaz.com
>>> http://ngvoice.com
>>> +52 55 3048 3303
>>>
>>> _______________________________________________
>>> sr-dev mailing list
>>> sr-dev at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>
>>>
>>
>>
>> --
>> Warm Regds.
>> MathuRahul
>>
>> _______________________________________________
>> sr-dev mailing list
>> sr-dev at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>
>>
>
>
> --
> Carlos
> http://caruizdiaz.com
> http://ngvoice.com
> +52 55 3048 3303
>
> _______________________________________________
> sr-dev mailing list
> sr-dev at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>
>


-- 
Warm Regds.
MathuRahul
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