public void Communications(object obj)
{
//byte[] receiveBuffer = new byte[4096];
Dictionary<String, String> request2 = new Dictionary<String, String>();
MJPEGVideo video = null;
RtpModel rtpModel = null;
var clientSocket = obj as Socket;
var clientAddress = clientSocket.RemoteEndPoint;
//update server box to show that a client has connected
this.UpdateServerBox("Accepted connection from: "
+ clientSocket.RemoteEndPoint.ToString() + Environment.NewLine);
var clientModel = new ClientModel(clientSocket);
//watch for timer to tick and run increment timer function when ticks
clientModel.timer.Elapsed += new ElapsedEventHandler((sender, e) => IncrementTimer(sender, e, ref rtpModel, ref video));
while (true)
{
RtspRequest request = null;
try
{
request = clientModel.Listen();
UpdateClientBox(request.ToString() + Environment.NewLine);
}
catch (ArgumentException)
{
break;
}
switch (request.RequestType)
{
case RtspRequest.RtspRequestType.DESCRIBE:
this.UpdateServerBox("Client " + clientAddress.ToString()
+ " has requested description" + Environment.NewLine);
clientModel.Send(new RtspResponse
{
RtspVersion = request.RtspVersion,
CSeq = request.CSeq,
Content = FileUtils.GetAllMJPEGFilesFromDir(ServerConfig.FilesDirectory)
.Aggregate(string.Empty, (res, next) => res += next + ";")
});
break;
case RtspRequest.RtspRequestType.SETUP:
this.UpdateServerBox("Client " + clientAddress.ToString()
+ " has setted up" + Environment.NewLine);
rtpModel = new RtpModel(clientAddress.ToString().Split(':')[0], request.ClientPort);
//load video
video = new MJPEGVideo(request.FileName);
break;
case RtspRequest.RtspRequestType.PLAY:
this.UpdateServerBox("Client " + clientAddress.ToString()
+ " is playing " + request.FileName + Environment.NewLine);
//start the timer
clientModel.timer.Start();
break;
case RtspRequest.RtspRequestType.PAUSE:
this.UpdateServerBox("Client " + clientAddress.ToString()
+ " paused " + request.FileName + Environment.NewLine);
//pause the timer
clientModel.timer.Stop();
break;
case RtspRequest.RtspRequestType.TEARDOWN:
this.UpdateServerBox("Client " + clientAddress.ToString()
+ " teared down " + request.FileName + Environment.NewLine);
//stop timer
clientModel.timer.Stop();
//server reply
clientModel.Send(new RtspResponse
{
RtspVersion = request.RtspVersion,
CSeq = request.CSeq,
Session = request.Session
});
video = null;
rtpModel = null;
clientModel = null;
clientSocket = obj as Socket;
clientModel = new ClientModel(clientSocket);
clientModel.timer.Elapsed += new ElapsedEventHandler((sender, e) => IncrementTimer(sender, e, ref rtpModel, ref video));
break;
}
if (request.RequestType != RtspRequest.RtspRequestType.DESCRIBE)
{
clientModel.Send(new RtspResponse
{
RtspVersion = request.RtspVersion,
CSeq = request.CSeq,
Session = request.Session
});
}
}
}
public void IncrementTimer(object sender, EventArgs e, ref RtpModel rtpModel, ref MJPEGVideo video)
{
//increment packet timer
rtpModel.IncrementPacketTime();
//check if end of file and if it is, then reset file
if (video.EndofFile())
{
video.ResetVideo();
}
//get the next frame
var videoBuffer = video.GetNextFrame();
//packetize and send the next frame
var packetizedVideoFrame = rtpModel.SendPacket(videoBuffer);
//create blank byte array to store header bytes
var headerBytes = new byte[12];
//copy first 12 bytes of the packetized video frame into the headerBytes byte array
System.Buffer.BlockCopy(packetizedVideoFrame, 0, headerBytes, 0, 12);
//convert the header bytes into bits
var headerBits = string.Join(" ", headerBytes.Select(x => Convert.ToString(x, 2).PadLeft(8, '0')));
}
