Session is one of the parameters that get passed to API calls. If the API was invoked by a session, and not out of band, like form the console or event_socket, or any other way to invoke it, the argument will not be null. You can then get variables from the session handle just like you would do anywhere else.

--Dave

From: cristian re [mailto:cristian.re.work@gmail.com]
To: freeswitch-users@lists.freeswitch.org
Sent: Tue, 05 Jun 2012 08:33:59 -0700
Subject: [Freeswitch-users] how to: get session variable after api_hangup_hook

Hello,

I write a custom cpp module for freeswitch that exposes an API:

SWITCH_ADD_API(commands_api_interface, "my_hangup", "my_hangup", my_hangup_api , MY_HANGUP_USAGE);

I want to call this api from dialplan (after bridge hangup) for reading the variable "billmsec".

I put this into my dialplan:

<action application="set" data="session_in_hangup_hook=true"/>

<action application="set" data="api_hangup_hook=my_hangup_api"/>

After hangup freeswitch call correctly my API but I have not figured out how to get the variable.