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
OpenSIPS Summit 27-30 Sept 2022, Athens
  https://www.opensips.org/events/Summit-2022Athens/

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]>
*Sent:* August 24, 2022 10:33 AM
*To:* Li Cai <[email protected]>; OpenSIPS users mailling list <[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%7C3cfc94bd30494557971708da85dd8120%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637969483655810006%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Alp8ey%2Frlw%2BagiLIsIphXz51eF74enunVGtuvY3veHA%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 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%7C3cfc94bd30494557971708da85dd8120%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637969483655810006%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Alp8ey%2Frlw%2BagiLIsIphXz51eF74enunVGtuvY3veHA%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%7C3cfc94bd30494557971708da85dd8120%7Ca9a26e696ae040c1bd801ca6cc677828%7C0%7C0%7C637969483655810006%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ECg5RaeWv7nyMoFz2sTaFdQU%2BqzGA3wBaCGzbUfmygo%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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