WebRtcClient(RtcListener listener, Integer bookingId) {
        mListener = listener;
        this.bookingId = bookingId;
        PeerConnectionFactory.initializeAndroidGlobals(listener, true, false, false);
        factory = new PeerConnectionFactory();

        pcConstraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveAudio", "true"));
        pcConstraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveVideo", "false"));
        pcConstraints.optional.add(new MediaConstraints.KeyValuePair("DtlsSrtpKeyAgreement", "true"));

        AudioSource audioSource = factory.createAudioSource(pcConstraints);
        AudioTrack localAudioTrack = factory.createAudioTrack("ARDAMSa0", audioSource);
        localAudioTrack.setEnabled(true);

        localMS = factory.createLocalMediaStream("ARDAMS");
        localMS.addTrack(localAudioTrack);

        iceServers.add(new PeerConnection.IceServer("nevermind"));
        iceServers.add(new PeerConnection.IceServer("nevermind", "test", "test"));

        mListener.onLocalStream(localMS);

    }

public void onCreateSuccess(final SessionDescription sdp) {

            CallBody request = new CallBody();
            request.setToken(Preferences.getCallToken());
            request.setBookingId(bookingId);
            request.setSdp(sdp);
            pc.setLocalDescription(this, sdp);
            SocketManager.get().callConnect(request, new ResponseAdapter(null) {
                @Override
                public void onSuccess(Api apiName, String json) {
                    Log.d(TAG, json);
                }
            });

        }