[OpenSIPS-Users] Feature request: Loop detection

[Bogdan-Andrei Iancu]

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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