Bogdan-Andrei Iancu wrote:
Hi,
REGISTER retransmission is a little bit tricky.
If you have a stateless configuration, you will not be able to detect
retransmissions, so each request will be fully processed as a new one.
Since we added the cseq checking in register module (according to rfc),
the retransmissions will be reported as errors due invalid cseq no.
Solution: relax the register checking to accept equal cseq.
Disadvantage: you still process each register even if it;s
retransmission - partial solution: try sending an 100 trying once you
received a REGISTER.
This means that the client will wait for the response, which may never
arrive e.g. when it was dropped. How long will the client wait? will it
use a new cseq when it tries again?
Also you my go for a statefull approach: you will catch all
retransmissions, but it might have a negative impact on your memory
usage. Use t_newtran() before save in order to create transactions and
absorb retransmissions.
Does this really work? As far as I remember I tried this a year ago and
there where some problems. This is why Maxim made the patch.
regards
klaus
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