Hi Li,
The INVITE in #77 is an initial INVITE, connecting to a new party (as a
result of the bridging), so the TO hdr in that INVITE is dictated by the
B2B logic - as you can see the TO URI is the same as RURI, pointing to
the new party in the bridging.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
OpenSIPS Summit 27-30 Sept 2022, Athens
https://www.opensips.org/events/Summit-2022Athens/
On 8/25/22 10:57 PM, Li Cai wrote:
[This email is resent for the last one is oversized]
Hi Bodgan,
Thanks a lot for the help, the pcap file is attached. The call flow
is as –
#11. INVITE from the caller on 10.10.8.131 to
B2BProxy 10.10.9.205
#15. Forwarded INVITE from B2BProxy with the
expected To header to SIP UA1
.. . the call is setup and then b2b_bridge is triggered …
#75. B2BProxy sent reINVITE to the caller
#77. B2BProxy sent INVITE to SIP UA2 with the
unaccepted To header
#79. SIP UA2 rejected the call
The step #77 And #79 shows the problem, that the call was rejected as
the To header in INVITE is not using the UA2’s IP instead of
B2BProxy’s IP as domain name, which is required in our system.
In our opensips.cfg script, we have already included clauses like
remove_hf(“To”) and append_hf(“To …”) but seems like they only work
before b2b_bridge occurs.
Thanks,
Li
*From:*Bogdan-Andrei Iancu <[email protected]
<mailto:[email protected]>>
*Sent:* August 25, 2022 3:05 AM
*To:* Li Cai <[email protected] <mailto:[email protected]>>;
OpenSIPS users mailling list <[email protected]
<mailto:[email protected]>>
*Subject:* Re: [OpenSIPS-Users] Modify the headers after executing a
MI function in B2B_LOGIC module
*WARNING: External Email: Exercise Caution*
Hi Li,
Somehow we are going in circles here :). So, could you post a pcap for
call going via your B2B (showing all in and out SIP messages) and
mention which frame is the outgoing request you cannot modify ?
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.opensips-solutions.com%2F&data=05%7C01%7CLi.Cai%40comtech.com%7C265b1df77ec245f4343608da866836ca%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637970079417930542%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=NsOtgfx4yXMaQTnaYHIT6%2FcSOPj20jmwJijgZKUHRQU%3D&reserved=0>
OpenSIPS Summit 27-30 Sept 2022, Athens
https://www.opensips.org/events/Summit-2022Athens/
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On 8/24/22 6:50 PM, Li Cai wrote:
Hi Bogdan,
Thanks for the explanation. I mean that the local_route can take
effect for the forwarded INVITE(from incoming ones) in our proxy,
but not after b2b_bridge. I’ll do more debugging on it since the
messages should be visible. Thank you very much.
Thanks,
Li
*From:*Bogdan-Andrei Iancu <[email protected]>
<mailto:[email protected]>
*Sent:* August 24, 2022 10:33 AM
*To:* Li Cai <[email protected]> <mailto:[email protected]>;
OpenSIPS users mailling list <[email protected]>
<mailto:[email protected]>
*Subject:* Re: [OpenSIPS-Users] Modify the headers after executing
a MI function in B2B_LOGIC module
*WARNING: External Email: Exercise Caution*
Hi Li,
All SIP requests generated by `b2b_bridge` are to be visible in
local_route. And on the contrary, the incoming (received) requests
DO NOT trigger local route.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.opensips-solutions.com%2F&data=05%7C01%7CLi.Cai%40comtech.com%7C265b1df77ec245f4343608da866836ca%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637970079417930542%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=NsOtgfx4yXMaQTnaYHIT6%2FcSOPj20jmwJijgZKUHRQU%3D&reserved=0>
OpenSIPS Summit 27-30 Sept 2022, Athens
https://www.opensips.org/events/Summit-2022Athens/
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.opensips.org%2Fevents%2FSummit-2022Athens%2F&data=05%7C01%7CLi.Cai%40comtech.com%7C265b1df77ec245f4343608da866836ca%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637970079417930542%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=HesmiGoVT6s1gwqWYiWA4bhZmQJiV04AOUTXAAQSbww%3D&reserved=0>
On 8/24/22 4:34 PM, Li Cai wrote:
Hi Bogdan,
Yes, we have put the changes by calling remove_hf() and
append_hf() in the ‘local_route’, those functions for new
incoming INVITE but not the INVITE sent out by ‘b2b_bridge’.
Thanks,
Li
*From:*Bogdan-Andrei Iancu <[email protected]>
<mailto:[email protected]>
*Sent:* August 24, 2022 7:18 AM
*To:* OpenSIPS users mailling list <[email protected]>
<mailto:[email protected]>; Li Cai <[email protected]>
<mailto:[email protected]>
*Subject:* Re: [OpenSIPS-Users] Modify the headers after
executing a MI function in B2B_LOGIC module
*WARNING: External Email: Exercise Caution*
Hi Li,
Have you tried to use the local_route in order to do custom
changes on the outgoing requests generated by the B2B bridging ?
Best regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.opensips-solutions.com%2F&data=05%7C01%7CLi.Cai%40comtech.com%7C265b1df77ec245f4343608da866836ca%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637970079417930542%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=NsOtgfx4yXMaQTnaYHIT6%2FcSOPj20jmwJijgZKUHRQU%3D&reserved=0>
OpenSIPS Summit 27-30 Sept 2022, Athens
https://www.opensips.org/events/Summit-2022Athens/
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.opensips.org%2Fevents%2FSummit-2022Athens%2F&data=05%7C01%7CLi.Cai%40comtech.com%7C265b1df77ec245f4343608da866836ca%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637970079417930542%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=HesmiGoVT6s1gwqWYiWA4bhZmQJiV04AOUTXAAQSbww%3D&reserved=0>
On 8/23/22 10:34 PM, Li Cai wrote:
Hi,
I’m working on a change for a B2BUA based on OpenSIPs 2.4,
but not sure if the function is supported or if it has
been supported in the later versions.
We have used the MI command b2b_bridge to bridge existing
calls from one entity to another and it works, the
scenario is the same as expected. While besides this, we
also need to modify one of the headers of the INVITEs
sending to the new destination in this scenario, our
scripts in the opensips.cfg can’t take any effect.
Thanks,
Li
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