[OpenSIPS-Users] Parallel forking and per branch manipulation

[Jayesh Nambiar]

Thanks Bogdan. Will definitely try this out.

--- Jayesh

On Monday, September 3, 2012, Bogdan-Andrei Iancu wrote:

> **
> Hi Jayesh,
>
> See my inline comments.
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>
>
> On 08/31/2012 03:02 PM, Jayesh Nambiar wrote:
>
>  Hi Binan,
> Thank you very much for your reply. What you wrote is what I understand
> from all the documentation present but probably the concept is not working
> for me or probably just not getting into my head. This is a snippet of what
> I'm trying to do:
>
>  lookup("location");
> $branch = $ru;
>
> You do not need this last line as the $ru will be automatically be
> considered branch 0.
>
>
>  avp_db_query("SELECT cli, phone_number FROM users WHERE user_id = '$rU',
> "$avp(cli), $avp(parallel_number)");
> $rU = $avp(parallel_number);
> $rd = my_gateway_ip;
> $var(uri) = "sip:"+$rU+"@"+$rd;
>
>  $branch = $var(ruri);
>
>  t_on_branch("1"); # --This is confusing me---
>
> This is correct, you are arming the branch 1, which will be executed
> inside t_relay(), once for each branch.
>
>  t_relay();
> exit;
>
>  branch_route[1] { #---Need to know how to check for branch id here---
>        if(branch_id == 1) { #--- How do I check for this condition??
>
> See $T_branch_idx (
> http://www.opensips.org/html/docs/modules/1.8.x/tm.html#id294499)
>
>                uac_replace_from("sip:$avp(cli)@mydomain.com");
>        }
> }
>
>  The problem is I dont know how to identify the branch id in the branch
> route. Even if I set branch flag for second branch using setbflag(1,1) and
> I check for this flag in the branch route using isbflagset(1,1), by the
> time the first branch goes into branch_route, the second branch is created
> and the condition isbflagset(1,1) becomes true and the uac_replace_from()
> gets executed for first branch also. My requirement is to execute this
> branch_route only for second branch which is branch_id 1.
> Isn't there any straight forward way of checking the id of the branch when
> it comes to the branch route??
>
>  Any help is really appreciated. Thanks.
>
>  --- Jayesh
>
>> Hi,
>>
>> lets say you have 2 branches 0 towards user in location and 1 towards
>> PSTN.
>> ?
>> I suggest to use branch flags which are used to activate some functions
>> in branch level
>>
>> when creating the branches in main route use this variable $branch() to
>> set branch flags to each indivisual branch depending on its index 0 for
>> branch 0 and 1 for branch 1.
>>
>> use branch routing blocks to execute certain logic (it could be the
>> manipulation ) for each branch before forwarding the request.
>>
>> // Binan
>>
>> --- On Thu, 8/30/12, Jayesh Nambiar <jayesh.voip at gmail.com<javascript:_e({}, 'cvml', 'jayesh.voip at gmail.com');>>
>> wrote:
>>
>> From: Jayesh Nambiar <jayesh.voip at gmail.com <javascript:_e({}, 'cvml',
>> 'jayesh.voip at gmail.com');>>
>> Subject: [OpenSIPS-Users] Parallel forking and per branch manipulation
>> To: "OpenSIPS users mailling list" <users at lists.opensips.org<javascript:_e({}, 'cvml', 'users at lists.opensips.org');>
>> >
>> Date: Thursday, August 30, 2012, 8:11 AM
>>
>> Hi All,I have a scenario to do parellel forking between the user found in
>> location and towards a PSTN gateway. The requirement here is, I have unique
>> manipulations to be done before routing the call which I believe can be
>> done using branch routes, but I'm just wondering how.?
>> For eg: The branch that goes to the user found from location should have
>> no FROM Header manipulation and the branch that goes out to PSTN gateway
>> needs a uac_replace_from("sip:123456789 at 1.2.3.4 <javascript:_e({},
>> 'cvml', 'sip%3A123456789 at 1.2.3.4');>"), and
>> insert_hf("P-Asserted_Identity: sip:123456789 at 1.2.3.4 <javascript:_e({},
>> 'cvml', 'sip%3A123456789 at 1.2.3.4');>\r\n") before calling t_relay().
>> There are many other manipulations like this.
>> How do I take the script logic to individual branch routes before calling
>> t_relay, because whats happening with me is once the location is looked up,
>> I go ahead for manipulations that is supposed to be done for the gateway
>> branch, but it gets applicable for the branch that goes out to the user as
>> well !!
>>
>> Probably I am missing something on my understanding on how to call
>> branch_routes while doing parallel forking.
>> Thanks for any help.
>> --- Jayesh
>>
>>
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