Thanks for the suggestion, i will take a look at it.

Meanwhile, I thought doing something like adding following lines in the route block where Kamailio gets a response from the REST API:

# Store the full JSON for later access
$dlg_var(route_json) = $var(rtjson);

# Initialize route index tracking
$dlg_var(current_route_idx) = 0;

# Parse and store route count
jansson_get("routing.routes", $var(rtjson), "$var(routes_array)");
if ($var(routes_array) != $null) {
jansson_array_size("routes", $var(routes_array), "$var(total_routes)");
$dlg_var(total_routes) = $var(total_routes);
xlog("L_INFO", "Total routes available: $var(total_routes)\n");
}

# Use rtjson to process the routes
if (!rtjson_init_routes($var(rtjson))) {
xlog("L_ERROR", "Failed to initialize routes from JSON\n");
t_reply("500", "Routing Configuration Error");
exit;
}

# Set failure route for handling failed attempts
t_on_failure("ROUTE_FAILURE");
t_on_reply("REPLY_HANDLER");
t_on_branch("PER_BRANCH_ROUTE");

# Extract current route info before relay
# and do some voodoo ....

.....

# Try the first route
if (!rtjson_push_routes()) {
xlog("L_ERROR", "Failed to push routes\n");
t_reply("500", "Routing Error");
exit;
}

# Relay the INVITE

if (!t_relay()) {
# First route failed immediately
route(NOTIFY_ROUTE_FAILURE_ASYNC);

# Increment route index
$dlg_var(current_route_idx) = $dlg_var(current_route_idx) + 1;

if (!rtjson_next_route()) {
t_reply("503", "Service Unavailable");
exit;

}

But honestly I would expect some fancy method that could simplify all the above lines, like a RTJson variable returning current route index and (why not?) a method returning the JSON part of the current route being processed. Maybe this could be a nice feature for the next release ....

( my C/C++ experiences stopped +30 years ago..... Borland ruled back then! .... Yeah, i'm that old :) )

Atenciosamente / Kind Regards / Cordialement / Un saludo,

Sérgio Charrua

On Tue, Jun 17, 2025 at 9:00 PM Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

probably you can leverage $T_branch_index in a branch_route (or falure_route).

Cheers,
Daniel

On 17.06.25 17:08, Sergio Charrua via sr-users wrote:
Just having a function that returns the current route from the RTJson object would be enough for me.... once I get it, I can parse the json object, modify/remove headers as needed and then relay the call.

If there is no function/method/static variable available in the module, wouldn't that make sense to have it? just asking....

Atenciosamente / Kind Regards / Cordialement / Un saludo,

Sérgio Charrua

On Tue, Jun 17, 2025 at 3:43 PM Alex Balashov via sr-users <sr-users@lists.kamailio.org> wrote:

It sounds like your use-case might require going outside the boundaries of the `rtjson` formula, and perhaps retrieving and consuming a JSON route set manually.

> On Jun 17, 2025, at 10:06 AM, Sergio Charrua via sr-users <sr-users@lists.kamailio.org> wrote:
>
> Hi all!
>
> doing some integrations with RTJson module for Kamailio 5.8.4, calling a REST API to return the RTJson's JSON object with 1 or multiple route elements.
> Kamailio converts the whole SIP headers to JSON using a Javascript function, executed by APP_JDST module, and POSTing the resulting object to the REST API via http_async module.
>
> I couldn't find a way to get the current selected route, from the RTJson object, once Kamailio iterates through the JSON object (i.e: using rtjson_push_routes or rtjson_next_route).
>
> When the RTJson module iterates through the different routes of the JSON object, is there a way to get the JSON part that defines the route currently being used by RTJson?
>
> The goal is to return some custom properties set in each route element of the route array.
> Once those properties are returned, Kamailio should process them.
> For example, RTJson supports From and To headers modification and appending new headers with the "extras" element, but there is no way that I know of to modify other headers or remove headers depending on the route.
>
> Does anyone know how:
> 1 - to return current route element from the routes array of the RTJson object ?
> 2 - to modify / remove headers other than the From and To headers, according to the custom values set in the RTJson returned from a REST API ?
>
> Thanks in advance!
>
> Atenciosamente / Kind Regards / Cordialement / Un saludo,
>
> Sérgio Charrua
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--
Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com, https://www.csrpswitch.com
Tel: +1-706-510-6800

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Important: keep the mailing list in the recipients, do not reply only to the sender!
-- 
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