[Kamailio-Users] Registration Timeout Retransmission

[Hemanshu Patel]

What kamailio is doing is what normally any rfc 3261 should do.
But in my case i dont want once used nonce and response to be reused.... i
think i left with only one solution, and which is that i am not suppose to
entertain retransmission of REGISTER request till say around 2 sec once i
send 200 OK.
This will give ample amount of time to client phone to receive 200OK and
once phone will receive 200OK it wont send another REGISTER request, and
from server end first REGISTER retransmission i am dropping.that servers
my purpose.

Can anyone suggest me the easiest way to implement the same.
Can i do it with already available flags or function or i need to hack a
code a bit.

-- 
Regards,

Hemanshu Patel

M: 09601295238

> Hello to all users,
>
> I am very new to kamailio and just started using it. I have installed it
> and my phones are getting register successfully.
>
> But sometimes i am seeing a scenario, which makes my phones unusable for
> sometime.
> please see the condition as below
>
> | phone |--------------| Kamailio |
> | REGISTER----------------->
>    <----------------------401
> | REGISTER----------------->
> Tricky condition here
>
> | timeout <--------------200 OK
> phone shows itself as unregistered
> | REGISTER---------------->
>      <--------------------401
>
>
> After several retries phone stops to retry till say next 20 seconds,
> during that time though there's an entry in location table in kamailio (i
> am using mysql) my phone shows itself as unregistered phone.
>
>
> Due to load or any other conditions Server takes a bit time to send 200OK
> back to phone and During that time timer expires and phone sends REGISTER
> once again.
> now phone will keep sending REGISTER request with same nonse and other
> value, and kamailio is configured to not to entertained same credentials
> with nonce if it is authenticated once. So kamailio generates new 401
> Message with new nonce value to which phone understands as the previous
> reply thet he send for previous 401 was rejected, and the most probable
> reason is wrong user credentials.....
>
> Hope you guys have got my problem?
> i can not allow kamailio to let use the same credentials+ response with
> nonce if it has used it once for security reason. Then what could be the
> solution for this.
> I am very good in Programming, but just that i have just started to use
> kamailio and not very much aware about its architecture.
>
>
> --
> Regards,
>
> Hemanshu Patel
>
> M: 09601295238
>
>
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