>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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