[Freeswitch-users] event socket

Nuwan Wijerathne NuwanW at unifybusiness.co.uk
Tue Oct 25 17:49:31 MSD 2011


Thanks for the reply. Yes my application is listening on the port and I'm receiving events. However when I try to execute "answer" application it's not working. I'm trying to execute "answer" application when I receive "CHANNEL_CREATE" event on inbound calls. Please see code below. Could you Please advise

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.IO;

namespace ESLTest
    public class Test
        private Dictionary<string, Call> CallsTable;

        private Thread ThreadReader;

        private ESLconnection eslConnection;

        private const int CONNECTED = 1;

        private const string server = "localhost";
        private const string port = "8021";
        private const string password = "ClueCon";

        public Test()
            CallsTable = new Dictionary<string, Call>();

        private void Connect()
            eslConnection = new ESLconnection(server, port, password);

            if (eslConnection.Connected().Equals( CONNECTED))
                Console.WriteLine("Conneected to FreeSwitch");

                ThreadReader = new Thread(new ThreadStart(Read));
                Console.WriteLine("Conneection Failure");

        private void Read()
            ESLevent eventHandle = eslConnection.SendRecv("event plain ALL");

            if (eventHandle == null)
                Console.WriteLine("Error subscribing to all events");
                Console.WriteLine("Subscribed to all events");

            while (true)
                eventHandle = eslConnection.RecvEvent();

                string CallID = eventHandle.GetHeader("Unique-ID");

                if (eventHandle.getType() == "CHANNEL_CREATE")
                    //Inbound call
                    if (eventHandle.GetHeader("Call-Direction") == "inbound")
                        CallsTable.Add(CallID, new Call(CallID));
                        eslConnection.Execute("answer", null, null);
                        Console.WriteLine(string.Format("{0} : Inbound CallID : {1}", eventHandle.getType(), CallID));

Dialplan entry as follows,

                <extension name="intercept">
                     <condition field="destination_number" expression="^9$">
                           <action application="socket" data=" async full"/>

Thank you,

From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Michael Collins
Sent: 24 October 2011 18:14
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] event socket

Please confirm: are you sending the call to the "socket" application in your dialplan? If so, then your ESL app needs to be listening on the TCP port specified. See the examples here: http://wiki.freeswitch.org/wiki/Event_Socket_Outbound#Examples

On Mon, Oct 24, 2011 at 8:50 AM, Nuwan Wijerathne <NuwanW at unifybusiness.co.uk<mailto:NuwanW at unifybusiness.co.uk>> wrote:

I'm trying to build an IVR application around freeswtich. I'm using freeswitch event socket in C#. I'm intercepting inbound calls in the dial plan and sending them to my application via outbound socket. Could someone please explain how to execute "answer" application through event socket.

Eg - I'm sending the command as below and it's not working.

ESLConnection eslConnection = new ESLConnection(server, port, password)
ESLEvent eventHandle = eslConnection.SendRecv("event plain ALL");

eventHandle = eslConnection.RecvEvent();
string uniqueCallID = evenHandle.GetHeader("Unique-ID");

eslConnection.Execute("answer", string.Empty, UniqueCallID);

I believe I'm doing something wrong as I can't find required information. Could someone please let me know where to find more information about freeswitch event socket in .Net. (Google not giving me required information)

Thank you,

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