16 Jan
2019
16 Jan
'19
12:57 p.m.
Hello
As you will know i am developing new module for Kamailio and i'll commit on
main project as soon as. Let me give more news about this module later.
But i wanna to share with you one thing, if you were in my shoes, what do
you to found out duplicated signalling? I don't mean retransmision messages.
Let's go to question: In kamailio, you could get a copy of signalling
message that is generated by siptrace module in other one kamailio. We know
it would be send some signalling messages twice or more in duplicate( I
mean 180Ringing, 200OK or etc), How we could found out them? Actually i
must do it in module not do in cfg configuration.
Would you please give me a suggest? I really need a sugest with no extra
overhead.
With regards.Mojtaba
17 Jan
17 Jan
8:56 a.m.
Maybe you could keep a hash with messages’ checksum and discard duplicates?
But this is something you should fix on the device that is doing the wrong
thing.
On Thu, 17 Jan 2019 at 07:03, Mojtaba <mespio(a)gmail.com> wrote:
Hello
As you will know i am developing new module for Kamailio and i'll commit
on main project as soon as. Let me give more news about this module later.
But i wanna to share with you one thing, if you were in my shoes, what do
you to found out duplicated signalling? I don't mean retransmision messages.
Let's go to question: In kamailio, you could get a copy of signalling
message that is generated by siptrace module in other one kamailio. We know
it would be send some signalling messages twice or more in duplicate( I
mean 180Ringing, 200OK or etc), How we could found out them? Actually i
must do it in module not do in cfg configuration.
Would you please give me a suggest? I really need a sugest with no extra
overhead.
With regards.Mojtaba
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19 Jan
19 Jan
4:43 a.m.
Hello guys,
Sorry for my mistake in subject!
"Give me suggestions for module implementation", anyway,
Give me suggestions for duplication detection algorithm?
With Regards. Mojtaba
20 Jan
20 Jan
10:17 a.m.
Am Samstag, 19. Januar 2019, 10:43:09 CET schrieb Mojtaba:
Sorry for my mistake in subject!
"Give me suggestions for module implementation", anyway,
Give me suggestions for duplication detection algorithm?
Hello Mojtaba,
just to give you an idea: you can access and store parts of the message in
memory with e.g. the htable module. Then you can compare it during the route
block with the new incoming message and reject it.
I found this old discussion thread about a similar topic:
https://lists.kamailio.org/pipermail/users/2009-February/021906.html
You can of course also implement this in a module, but in this case it would
not be necessary.
Maybe this is helpful for your as well.
Best regards,
Henning
--
Henning Westerholt - https://skalatan.de/blog/
Kamailio services - https://skalatan.de/services
Kamailio security assessment - https://skalatan.de/de/assessment
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Mojtaba