[sr-dev] [kamailio/kamailio] Feature request: http_async_query response route to resume execution from memory (#1642)

[Federico Cabiddu]

Http async queries work using the Kamailio tm framework, used by all the
modules exposing async behaviour. A change in this behaviour, which implies
a rework of the whole framework, is not something that can be done easily
and for sure not for a single module.


On Thu, 13 Sep 2018, 18:18 alexsosic, <notifications at github.com> wrote:

> From the official kamailio documentation of the function http_async_query(url,
> route_name)
>
> Sends HTTP(S) request asynchronously to the URL given in “url” parameter, which is a string that may contain pseudo variables.
>
> Parameter “route_name” defines the route to be executed upon reception of HTTP reply, on error or on timeout. If a transaction exists before calling http_async_query(), it will be paused and resumed in this route, while the routing script execution will be stopped. If executed in a transactionless context, or if $http_req(suspend) is used not to suspend the transaction, the routing script execution will continue and the query result will be available in “route_name”.
>
> Because the routing script execution will be stopped it's quite difficult
> for some advanced usages to restore the previous variables and logic and to
> continue with the execution.
>
> The problem of resuming the work is delegated to the user and not Kamailio
> itself. I think Kamailio should freeze the execution and store all needed
> data in memory to resume execution after the http response like for a
> normal http sync query.
>
> So the stopping will become pausing/resuming.
>
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