func addHandlers() {

        socket.on(clientEvent: .connect) {data, ack in

            self.joinGroup()
        }
        socket.on("connect") {
            data, ack in
            print("Socket Connected....")
            print("Join group 2")
            self.isJoining = false
            self.joinGroup()
        }
        socket.on("disconnect") {

            data, ack in

            self.connectToHost()
        }
        socket.on("onReady")
        {
            data, ack in
           if self.delegate == nil
            {
                return
            }
            print("onReady:")
            let onReady = data[0] as! String
            self.delegate?.didReceiveOnReadyResponse!(response: onReady)
            return
        }
       ...................
}

func acceptRapidEmergency(_ emergencyID:String,_ senderID:String )
    {

                     socket.emitWithAck("acceptCallbackRequest",emergencyID,userID!,senderID)

 self.delegate?.didReceiveRapidEmergencyChatResponse?(emergencyID)
    }

class VideoChatViewController: UIViewController, RTCSessionDescriptionDelegate, RTCPeerConnectionDelegate, TiaChatManagerDelegate,WebRTCDelegate{

override func viewDidLoad() {
.........
 let iceServer: RTCICEServer = RTCICEServer(uri: URL(string: "turn:cprtcstg.tiamd.com"), username: "tiatech", password: "tiatech!123") // Staging
.......
TiaChatManager.sharedInstance.acceptRapidEmergency(thisEventModal.broadCastID,thisEventModal.senderId)
            TiaChatManager.sharedInstance.isincomigVoip == false

.......
  }
    ............
func setupWebRTC(){


        webRTCManager = WebRTCManager()

        let iceServer: RTCICEServer = RTCICEServer(uri: URL(string: "turn:cprtcstg.tiamd.com:3478"), username: "tiatech", password: "tiatech!123")//Recent changed Server

        webRTCManager!.iceServers!.append(iceServer)
        webRTCManager!.constraints = RTCMediaConstraints(mandatoryConstraints:[ RTCPair(key: "OfferToReceiveAudio", value: "true")], optionalConstraints: nil)
        TiaChatManager.sharedInstance.webrtcdelegate = self as! WebRTCDelegate
        myUserID = UtilitySwift.getStringFromUserDefaultUsingKey(key: USER_ID);

        }

        let newFrame: CGRect = CGRect(x: self.localVideo!.frame.origin.x, y: self.localVideo!.frame.origin.y, width: 0, height: 0)
        self.localVideo!.frame = newFrame


        let notificationCenter = NotificationCenter.default
        notificationCenter.addObserver(self, selector: #selector(appMovedToBackground), name: NSNotification.Name.UIApplicationWillResignActive, object: nil)
        print("SETUP WEBRTC")
    }

......
  func didReceiveRapidEmergencyChatResponse(_ status: String) {
       startCapturingWebRTC()
       print("START CAPTURING")
    }
.....
   func startCapturingWebRTC(){
        print("READY FOR CALL START")
        isRemoteHangup = false
        RTCPeerConnectionFactory.initializeSSL()
        webRTCManager!.rtcFactory = RTCPeerConnectionFactory()
        TiaConEmergencyManager.sharedInstance.webRTCManager.videoViewController = self

        webRTCManager!.peerConnection = webRTCManager!.rtcFactory!.peerConnection(withICEServers: webRTCManager!.iceServers, constraints: nil, delegate: webRTCManager)
        webRTCManager!.localMediaStream = webRTCManager!.rtcFactory!.mediaStream(withLabel: "webRTCAVStream")
        let audioTrack: RTCAudioTrack = webRTCManager!.rtcFactory!.audioTrack(withID: "audio0")
        webRTCManager!.localMediaStream!.addAudioTrack(audioTrack)
        if isCallBack != false || isWebCall != false {
            isAudioMute = false
            isVideoMute = true
            //isSpeakermode = false
        }

        var captureDevice : AVCaptureDevice?
        ......
}
}