[OpenSIPS-Users] Feature request: Loop detection

[Bogdan-Andrei Iancu]

OK, let me see how difficult is to re-design the pike module, as so far, 
the way the internal data is kept is highly IP-format dependent.

Regards,
Bogdan

Brett Nemeroff wrote:
> Yeah, that's a great idea actually, I could just concatenate some PVs 
> to form a key like $si-$rU.
>
>
> On Mon, Jun 29, 2009 at 8:53 AM, Bogdan-Andrei Iancu 
> <bogdan at voice-system.ro <mailto:bogdan at voice-system.ro>> wrote:
>
>     Hi Brett,
>
>     This will be kind of pike but instead of using as input the source
>     IP string, it should use a custom string you build form script,
>     right ? this string will be a kind of key (logical one) to
>     identify the loop.
>
>     Regards,
>     Bogdan
>
>     Brett Nemeroff wrote:
>
>         Hey All,
>         I was wanting to submit a feature request for loop detection.
>         Specifically NOT SIP loop detection, but when another
>         technology / B2BUA is involved where max-forwards can't be
>         used. This is for big loops.
>         The idea is similar to the pike module. However, you
>         bascically look at the to_did and the source IP and if you see
>         more than X calls in Y period, begin to reject them for Z seconds.
>
>         Simple enough. This has come up a dozen times for me and for
>         now I have to handle it with kludge of memcache, and perl
>         scripts to detect these issues in my cdr.
>
>         The loops are a bit nuts and are always the results of someone
>         doing something stupid (but hey, it does happen). The loops
>         are like, my customer sends me a call to one of thier own DIDs
>         (they've misrouted it to me) and I send it to my carrier, who
>         sends it to the pstn, back to my customer, back to me, etc..
>         There may be a ss7 portion in there so it keeps looking like a
>         new call on the SIP side.
>         So without anything, this can clog up my call paths pretty
>         quickly, the proposed feature would blacklist the source_ip
>         to_did combination for a period of time to kill the loop.
>
>         Thoughts?
>         -Brett
>
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