[SR-Users] Can I use Kamailio as B2BUA

[Kamal Palei]

Hi Daniel
We need to modify Kamailio in a proper way to have separate connection per
call. We need your guidance and we will share the details so that it will
be useful for somebody else.

Now how do we proceed. My thought is
1. In Kamailio, there might be a structure or object that might be storing
per call information. Let's call it *call_context*. Also there might be
another data structure that might be storing registration information.Let's
call it *reg_context*.

2. In tcp_main.c , tcp_do_connect() creates socket . So I want to store
tcp_connection structure in call_context. So that there are separate
sockets per call.

3. Same thing should be done for registration, like storing tcp_connection
structure in per reg_context.

Now my question is it the right approach, or kindly advise what is the
right approach.

If what I have mentioned is right approach, pls give some information
regarding data structures and how can I store specific tcp_connection
structure in a call_context or reg_context.

We are totally dependent on you. Kindly guide us. First time I will be
modifying Kamailio code, kindly give more details, that will help us great
way.

Thanks
kamal


On Mon, May 13, 2013 at 1:18 PM, Daniel-Constantin Mierla <miconda at gmail.com
> wrote:

>  Hello,
>
> there is a limit in the operating system of the ports that can be used - a
> port is short int value, 2^16.
>
> If it is for testing purposes, perhaps you can create many virtual
> machines, with a load balancers in front of it.
>
> Anyhow, it might be easier to patch kamailio not to reuse the connection,
> look at tcp*.{c,h} files.
>
> Cheers,
> Daniel
>
>
> On 5/11/13 6:27 AM, Kamal Palei wrote:
>
>    Hi Daniel
>  Thanks for reply.
>
>  Just curious to know, how many number of calls we can achieve using the
> solution you have recommended.
>
>
>  Also the solution, you have recommended, I am not very clear on that how
> to do it. Kindly can you explain in detail.
>
>  Best Regards
>  Kamal
>
>
>
>
>
>
>
>
> On Fri, May 10, 2013 at 12:52 PM, Daniel-Constantin Mierla <
> miconda at gmail.com> wrote:
>
>> Hello,
>>
>> how many active calls do you expect to have?
>>
>> At this moment, kamailio does not create local sockets dynamically, they
>> have to be specified in the configuration.
>>
>> But if the number of active calls is not big, then you can create as many
>> sockets as expected calls and then use force send socket to select on. You
>> can use htable to keep the relation between  a call and a local socket.
>>
>> Cheers,
>> Daniel
>>
>>
>> On 5/10/13 5:45 AM, Kamal Palei wrote:
>>
>>> Dear Kamailio experts
>>> I have a typical use case where I want Kamailio to behave as a B2BUA.
>>>
>>> What I mean here is (assume Kamailio is using TCP for SIP call
>>> establishment)
>>>
>>> 1. For each call it should create a separate TCP connection with next
>>> proxy in path.
>>>
>>> 2. When call ends, it should close that connection. If that call is
>>> active for 10hrs, then connection should stay alive till 10hrs.
>>>
>>
>>   --
>> Daniel-Constantin Mierla - http://www.asipto.com
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
>>   * http://asipto.com/u/katu *
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>
>
> --
> Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
>   * http://asipto.com/u/katu *
>
>
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