[OpenSIPS-Users] Drouting failover by carrier only

[Johan De Clercq]

on what version is this ?

Op do 30 apr. 2020 om 15:09 schreef Alex A <alex.a at gtanetworkconsulting.com
>:

> Setting the "First Only" flag on the carrier seem to be done the trick for
> me.
> It round-robins, while failing over to another carrier directly.
>
>
> Thank you for your help.
>
>
>
>
> ---- On Thu, 30 Apr 2020 07:12:04 -0400 *Alex A
> <alex.a at gtanetworkconsulting.com <alex.a at gtanetworkconsulting.com>>*
> wrote ----
>
> Thank you for the tip, Ben.
>
> Do you by chance have a script snipped for this scenario?
>
> For some reason, the drouting part:
>         if (!do_routing(0,"F")) {
>                 xlog("DRoute GATEWAY: Failed. source:$si -$fU -> $rU\n");
>                 send_reply(500, "No Gateway to Route found");
>                 exit;
>         }
>         xlog("Before Entering Relay\n CarrierID_avp: $avp(carrier_id), GW
> ID avp: $avp(gw_id)");
>         route(relay);
>
> Both AVPs return a single value instead of the a list for me, so I must be
> missing something.
>
>
> Thanks.
>
>
>
>
> ---- On Wed, 29 Apr 2020 14:50:38 -0400 *Ben Newlin
> <Ben.Newlin at genesys.com <Ben.Newlin at genesys.com>>* wrote ----
>
> We also had a need to do this and did not find a way to do it via drouting
> directly, but it will work with drouting with a little help.
>
>
>
> First, we specify the carrier_id_avp param [1]. After we call do_routing,
> we copy out the carrier IDs from that avp into our own AVP. Then we use
> route_to_carrier [2] for each carrier ID in the list. To continue routing
> within the carrier, you can still do use_next_gw. When that returns false
> (no more gateways), or if you want to skip to the next carrier you just
> call route_to_carrier again with the next ID in your list.
>
>
>
> This solved two problem for us:
>
> * allows us to fail over by carrier instead of just by gateway
>
> * allows us to call do_routing multiple times for a call with different
> groups and aggregate the results
>
>
>
> [1] -
> https://opensips.org/docs/modules/3.0.x/drouting.html#param_carrier_id_avp
>
> [2] -
> https://opensips.org/docs/modules/3.0.x/drouting.html#func_route_to_carrier
>
>
>
>
>
> Ben Newlin
>
>
>
> *From: *Users <users-bounces at lists.opensips.org> on behalf of Alex A <
> alex.a at gtanetworkconsulting.com>
> *Reply-To: *OpenSIPS users mailling list <users at lists.opensips.org>
> *Date: *Wednesday, April 29, 2020 at 2:40 PM
> *To: *users <users at lists.opensips.org>
> *Subject: *[OpenSIPS-Users] Drouting failover by carrier only
>
>
>
> Hi Everyone,
>
>
>
> Is it possible to failover to next carrier (instead next gateway) while
> using drouting?
>
>
>
>
>
> I got the below to work; however currently, use_next_gw gets the next
> gateway in the list, so
>
> if gwlist= #0,#3
>
>
>
> and one of the carriers has multiple gateway IPs, the retry happens many
> times to the same carrier:
>
>
>
>
>
> route[droute] {
>
>
>
>         xlog("DRoute GATEWAY: source:$si - $fU -> $rU\n");
>
>         if (!do_routing(0,"F")) {
>
>                 xlog("DRoute GATEWAY: Failed. source:$si -$fU -> $rU\n");
>
>                 send_reply(500, "No Gateway to Route found");
>
>                 exit;
>
>         }
>
>         route(relay);
>
>         exit;
>
>
>
>         }
>
>
>
> route[relay] {
>
>
>
>         if (is_method("INVITE")) {
>
>                 t_on_failure("missed_call");
>
>         }
>
>
>
>         if (!t_relay()) {
>
>                 if (use_next_gw()) {
>
>                       xlog("L_INFO","Next Gateway: From=$fu,
> To=$tu,RU=$ru, CI=$ci IP=$si\n");
>
>                       t_on_failure("missed_call");
>
>                       route(relay);
>
>                       exit;
>
>                 }
>
>                 else {
>
>                         send_reply(503, "Service not available, no more
> gws");
>
>                         exit;
>
>                 }
>
>         };
>
>         exit;
>
> }
>
>
>
>
>
> failure_route[missed_call] {
>
>
>
>                 #if (use_next_gw(, , $var(carrier_attrs))) {
>
>                 if (use_next_gw(, $avp(gw_id),$avp(carrier_id))) {
>
>                       xlog("MissedCall--Next Gateway: From=$fu,
> To=$tu,RU=$ru, CI=$ci IP=$si\n");
>
>                       xlog("Carrier attributes of current gateway:
> $avp(gw_id). carrier: $avp(carrier_id)\n");
>
>
>
>                       t_on_failure("missed_call");
>
>                       route(relay);
>
>                       exit;
>
>                 }
>
>                 else {
>
>                         send_reply(503, "Service not available, no more
> gws");
>
>                         exit;
>
>                 }
>
>
>
>
>
>
>
>
>
> Thank you.
>
>
>
>
>
>
>
>
>
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