2017-05-22 12:52 GMT+02:00 FEICHTER Christoph <address@hidden>:
hi,
Hi Christoph!
I had a look in the code to find out, where the
retransmission of 200 Ok responses are sent.
… and found out, that this is done in eXosip_event_wait !
thus, they are sent in the context of an application-thread,
whereas retransmissions for 1xx responses and requests are sent in osip.
what is the reason for this ?
From the rfc3261, the handling of 200ok and ACK are made "outside of transaction".
For example, from 13.2.2.4 2xx Responses:"This is because the UAC core handles retransmissions of the ACK, not the transaction layer."
Well, I do agree that it could have been done some other better way...
an app using a high timeout for eXosip_event_wait
would not expect that the retransmission-timing of 200 Ok response is being influenced !
in addition, in case the app receives lots of events,
the function _eXosip_retransmit_lost200ok is rarely called – and the 200 Ok retransmission could starve.
I admit this code is not perfect. (However, it sounds enough for standard user-agent number of messages)
If you have time, you may propose some better code/alternative! I would be greatful!
Otherwise, if you have money, I could think about a better model, inside osip!
;)
Let me know!
Regards
Aymeric
br,
Christoph
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