Establishing an inbound event socket connection

An inbound event socket connection means that an external script or program is connecting to a FreeSWITCH server. The connection is inbound from the server's point of view. In fact, every time you run the fs_cli utility, you are making an inbound event socket connection.

Getting ready

Be sure that you have installed ESL for your preferred programming language (see the previous recipe, Setting up the event socket library). From there on, you will just need a text editor, command-line access, and a phone registered to your system. The examples presented here are in Perl. However, the accompanying code samples have corresponding examples in Python as well.

How to do it...

The following code is a simple inbound connection that sends the status command to FreeSWITCH. Add the code as follows:

1. Open scripts/ib_api.pl in a text editor and add these lines:

   #!/usr/bin/perl
   use strict;
   use warnings;
   require ESL;
   
   my $host = "127.0.0.1";
   my $port = "8021";
   my...