[sr-dev] Reply to INVITE fron provider with old Parmeters

[Alekzander Spiridonov]

Hi,

First of all, changing From\To headers on proxy breaks the RFC =) So that's
the initial problem of your set up I guess.

About your qustion, check out the wiki about failure_route:
> Note that in 'failure_route' is processed the request that initiated the
transaction, not the reply.

The only workaround you may want to check is to update the request and
apply lumps before you create a transaction.


2014-08-25 16:03 GMT+04:00 Yuriy Gorlichenko <ovoshlook at gmail.com>:

> Hello. At first- I think header of my message doesn't explain my porblem
> but I can not say about it with different terms)
>
> So. I have construction Asterisk --> Kamailio --> Providers
>
> My provisers registered with UAC modure and stored at UACREG table.
>
> Problem scenario is:
>
> I ring from asterisk to provider
>
> Asterisk --> Kamailio --> Providers
>
> Call from asterisk come to kamailio with
> furi(Asterisk_clinet_local_number at asterisk)
> turi(external_number at kamailio)
>
> Then, to forward INVITE to provider that Needed I use some manipulations
> to choose provider (it does not matter, it is only sql_queryes to some
> tables), and then modify invite with this code:
>
> #$var(prov) - my.provider.ip
> #$var(trunk) - name_of_trunk
>
> $rd=$var(prov);
> $rp="5060";
>  $fU=$var(trunk);
> $fd=$var(prov);
> $td=$var(prov);
>
> remove_hf("Contact");
> append_hf("Contact:<$var(trunk)@my.kamailio.domain:5068>\n","Contact");
>
>
> So -after this manipulation I have write packet, that goues to my provider.
>
> Then Provier sends me 407 answer and packet goes to failure_route
>
> if (t_check_status("401|407")){
>         xlog("L_INFO", "Reply from provider on failure: $rs");
>
>         if  (uac_auth()){
>                      #my query to get avp for uac
>                      #modparam("uac","auth_realm_avp","$avp(s:realm)")
>                      #modparam("uac","auth_username_avp","avp(s:uname)")
>
>  #modparam("uac","auth_password_avp","$avp(s:passwd))")
>
>  sql_pvquery("ca","select auth_username, auth_password, realm from uacreg
> where auth_username='$fU'","$var(uname), $var(passwd), $var(realm)");
>
>                  xlog("L_INFO", "username=$var(uname),
> password=$var(passwd), realm=$var(realm) for {$fU}");
>
> pv_printf("$avp(s:uname)","$var(uname)");
>                       pv_printf("$avp(s:passwd)","$var(passwd)");
>                       pv_printf("$avp(s:realm)","$var(realm)");
>
>
>                       xlog("L_INFO", "UAC_AUTH(): $rs");
>                        append_branch();
>                        t_relay();
>
>             }
>         }
> if (t_is_canceled()) {
> exit;
> }
>  So After changes Before Provider answer 407 my $fU = name_of_trunk, but
> at failure route my fU is Asterisk_clinet_local_number and it so strange
> because I see this packet at TCPDUMP and it have trunkname at fU
> Because of It I can not take from table needed vars for auth and avp`s
> Have 0.
>
> So packet for Auth (407) goes to Asterisk (with trunkname!!!! at fU), but
> t must stops at kamailio and must be ralayed to provider.
>
> So this my problem- I can not understand: Why fU at reply 407 have old
> parameters?
>
>
>
> _______________________________________________
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> sr-dev at lists.sip-router.org
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>
>


-- 
Best regards,
Alekzander Spiridonov
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