Thanks Henning!

In this instance the uac_replace_from method is not working either.  I attempted to use KSR.uac.uac_replace_from("batman", "") inside the redirect_transaction() method and it was not successful.  However, If I perform this BEFORE calling KSR.tm.t_newtran() then the From header uses the “batman” value for the response.  The problem is that I still cannot use the asynchronous lookup response to modify the From header once the transaction has been created.

-Michael

From: sr-users <sr-users-bounces@lists.kamailio.org> On Behalf Of Henning Westerholt
Sent: Friday, November 19, 2021 12:07 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Cc: Mike Tihonchik <mtihonchik@firstorion.com>; Julie Fowler <jfowler@firstorion.com>
Subject: Re: [SR-Users] Help with Async transaction responses

Hello,

Not sure if it works in this scenarios, but did you already tried to use: https://kamailio.org/docs/modules/stable/modules/uac.html#uac.f.uac_replace_from

Cheers,

Henning

--

Henning Westerholt – https://skalatan.de/blog/

Kamailio services – https://gilawa.com

From: sr-users <sr-users-bounces@lists.kamailio.org> On Behalf Of Michael Friesen
Sent: Friday, November 19, 2021 6:57 PM
To: sr-users@lists.kamailio.org
Cc: Julie Fowler <jfowler@firstorion.com>; Mike Tihonchik <mtihonchik@firstorion.com>
Subject: [SR-Users] Help with Async transaction responses

Hello,

I am attempting to perform some asynchronous lookup upon receiving an INVITE and then reply with a 3xx response with a modified From header.  My workflow now is to create a transaction when receiving the INVITE, suspend the transaction, perform the asynchronous lookup, continue the transaction upon response, and then modify the From header and reply.  The ONLY problem I am having is modifying the From header!  How can I modify the From header in this scenario?

function ksr_request_route()

    if KSR.is_INVITE() then

      if KSR.tm.t_newtran() then

            cache_transaction_info()

            KSR.tmx.t_suspend()

            --perform async loookup

        end

    end

    return 1

end

--This function called on response from async lookup. Equivalent of ONREPLY_ROUTE

function ksr_reply_route()

    --Finds the transaction_index and transaction_label from a cache

    KSR.tmx.t_continue(transaction_index, transaction_label, "redirect_transaction");

    KSR.x.drop()

    return 1

end

function redirect_transaction()

    KSR.pv.sets("$fU", "Jenny") --Doesn't actually modify the from username for 302 response!

    KSR.tm.t_reply(302, "Redirecting")

    return 1

end

Thank you much!

-Michael