I am beginner in SIP-WebRTC and need to know how to configure websocket in freeswitch in asterisk is configured in /etc/asterisk/http.conf but I don't know configure in freeswitch, bellow is my sip.js
( function()
  {
     var session;
     var endButton = document.getElementById('endCall');
     endButton.addEventListener("click", function (){
           session.bye();
           alert ("Call Terminated");
           }
           , false
                               );
     //Registration via websocket 
     var config = {
                        // my extension and ip of freeswitch
                        uri: '4009@10.20.11.10',
                        //in asterisk i used some how this. here is my problem :( how to do it in freeswitch?
                         wsServers: 'ws://192.168.0.3:8088/ws',
                        //here is my 4009
                        authorizationUser: '4009',
                        // my password
                        password: 'testsip',
                        
                        traceSip: true,
                        stunServers: 'null',
                 };
   
     var userAgent = new SIP.UA (config);
     var options = {
                     media: {
                              constraints: {
                                             audio: true,
                                             video: false,
                                           },
                              render: {
                                        remote: {
                                                   audio: document.getElementById('remoteAudio')
                                                },
                                        local:  {
                                                   audio: document.getElementById('localAudio')
                                                }
                                      }
                           }
    };
    function onAccepted ()
    {
        alert("Call Connected");
    }
    function onDisconnected ()
    {
        alert("Call Terminated");
    }
    //makes the call
    session = userAgent.invite('1000', options);
    session.on('accepted', onAccepted);
    //session.on('disconnected', onDisconnected);
  }
)();
my project uses http://sipjs.com/
thanks very much to all!!!