private void button1_Click(object sender, EventArgs e)
        {
            button1.Enabled = false;
            IPEndPoint localEP  = new IPEndPoint(IPAddress.Any, int.Parse(textBox3.Text));
            IPEndPoint remoteEP = new IPEndPoint(IPAddress.Parse(textBox2.Text), int.Parse(textBox1.Text));

            participant = new RTPParticipant(localEP, remoteEP, null, null);

            rtp_sender = new RTPSender();
            rtp_sender.AddParticipant(participant);

            rtp_receiver = new RTPReceiver();
            rtp_receiver.AddParticipant(participant);



            //win = new WaveInput();
            //win.BitsPerSample = 16;
            //win.Channels = 1;
            //win.SampleRate = 8000;
            //win.TransferBufferSize = 320;
            //win.Init();
            //win.OpenDevice();

            WaveInThreadProc = new Thread(new ThreadStart(() =>
            {
                while (IsRunning)
                {
                    //if (win.WaitSamplesAvailable(100))
                    Thread.Sleep(1000);
                    {
                        //byte[] pcm = win.GetNextData();
                        //var frame = encoder.EncodeToFrame(pcm);
                        //if (frame != null)
                        {
                            var data = new byte[200];
                            for (int i = 0; i < 200; i++)
                            {
                                data[i] = Convert.ToByte(packetsSent + i);
                            }
                            ;
                            session.Send(new RTPPacket(data));

                            packetsSent++;
                        }
                    }
                }
            }))
            {
                Name = "WaveInputThread"
            };


            //wout = new WaveOutput();
            //wout.BitsPerSample = 16;
            //wout.Channels = 1;
            //wout.SampleRate = 8000;
            //wout.Init();
            //wout.OpenDevice();

            //encoder = new SpeechEncoder();
            //encoder.InputBitsPerSample = 16;
            //encoder.InputChannels = 1;
            //encoder.InputSampleRate = 8000;
            //encoder.OutputBitrate = 64000;
            //encoder.SetCodec(SpeechCodecs.G711A);
            //encoder.Init();

            //decoder = new SpeechDecoder();
            //decoder.Bitrate = 64000;

            //decoder.SetCodec(SpeechCodecs.G711A);
            //bool res = decoder.Init();

            // Set up last to avoid conflicts

            session = new RTPSession();
            session.AddReceiver(rtp_receiver);
            session.AddSender(rtp_sender);
            session.NewRTPPacket = OnNewPacket;

            IsRunning = true;
            //win.Start();
            WaveInThreadProc.Start();


            updateTimer.Interval = 500;
            updateTimer.Tick    += new EventHandler(updateTimer_Tick);
            updateTimer.Start();
        }