Hello Igor,
Right now OpenSIPs does not support increasing the cseq during UAC
authentication. At the end this is a limitation of the a proxy versus a
B2B :)
Best regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 09/25/2017 04:00 PM, Igor Olhovskiy wrote:
Hi!
I’m trying to implement scenario, when OpenSIPS would be a proxy for
IP auth SIP side and username/pass auth other side.
So, call scenario would be like
1. A -> INVITE -> OpenSIPS B
2. A OpenSIPS -> INVITE -> B
3. A OpenSIPS <- 401 <- B
4. A OpenSIPS -> INVITE (auth) -> B
5. A OpenSIPS <- 200 <- B
6. A <- 200 <- OpenSIPS
But the problem is in CSeq. On step 4, when sending INVITE with Auth
CSeq should be changed from original (usually incremented), but on
step 6, when replying back to A, it should be original.
I didn’t found better solution, than to manually manipulate with CSeq
with append/remove headers.
So, maybe there is more OpenSIPS - wise way of doing this?
Regards, Igor
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