public static string Setup(DESCRIBE describe_frame,int client_port,int stream_id)
{
String command = "SETUP " + describe_frame.ContentBase + describe_frame.Streams[stream_id] + RTSP_CONSTANTS.RTSP_VERSION + Environment.NewLine;
command += "Transport: RTP/AVP/UDP;unicast;client_port=" + client_port + "-" + (client_port+1) + ";mode=play" + Environment.NewLine;
command +="CSeq: " + RTSP_CONSTANTS.Cseq++ + Environment.NewLine;
return command;
}
public static string Setup(DESCRIBE describe_frame, int client_port, int stream_id)
{
String command = "SETUP " + describe_frame.ContentBase + describe_frame.Streams[stream_id] + RTSP_CONSTANTS.RTSP_VERSION + Environment.NewLine;
command += "Transport: RTP/AVP/UDP;unicast;client_port=" + client_port + "-" + (client_port + 1) + ";mode=play" + Environment.NewLine;
command += "CSeq: " + RTSP_CONSTANTS.Cseq++ + Environment.NewLine;
return(command);
}
public static string Play(SETUP setup_frame,DESCRIBE describe_frame,int stream_id)
{
String command = "Play " + describe_frame.ContentBase + describe_frame.Streams[stream_id] + RTSP_CONSTANTS.RTSP_VERSION + Environment.NewLine;
command +="Range:" + describe_frame.Range + Environment.NewLine;
command +="Session:" + setup_frame.Session + Environment.NewLine;
command +="CSeq: " + RTSP_CONSTANTS.Cseq++ + Environment.NewLine;
return command;
}
public static string Play(SETUP setup_frame, DESCRIBE describe_frame, int stream_id)
{
String command = "Play " + describe_frame.ContentBase + describe_frame.Streams[stream_id] + RTSP_CONSTANTS.RTSP_VERSION + Environment.NewLine;
command += "Range:" + describe_frame.Range + Environment.NewLine;
command += "Session:" + setup_frame.Session + Environment.NewLine;
command += "CSeq: " + RTSP_CONSTANTS.Cseq++ + Environment.NewLine;
return(command);
}
//Completed event args go here
void RTSP_Socket_EvntArgs_Completed(object sender, SocketAsyncEventArgs e)
{
switch (e.LastOperation)
{
case SocketAsyncOperation.Connect:
SendMessage(RTSP_COMMANDS.Describe(YoutubeSource.Source));
break;
case SocketAsyncOperation.Send:
ReceiveMessage();
break;
case SocketAsyncOperation.Receive:
var message = Encoding.UTF8.GetString(e.Buffer, 0, e.BytesTransferred);
var Messsage_Status = message.Substring(0, 15);
if (!Messsage_Status.Contains(RTSP_CONSTANTS.STATUS_OK))
{
throw new WebException(message);
}
switch (CurrentCommand)
{
case COMMAND.DESCRIBE:
DescribeFrame = new DESCRIBE(message);
CurrentCommand = COMMAND.SETUP;
SendMessage(RTSP_COMMANDS.Setup(DescribeFrame, UDP_PORT, 0));
break;
case COMMAND.SETUP:
SetupFrame = new SETUP(message);
CurrentCommand = COMMAND.PLAY;
SendMessage(RTSP_COMMANDS.Play(SetupFrame, DescribeFrame, 0));
break;
case COMMAND.PLAY:
PlayFrame = new PLAY(message);
iso = IsolatedStorageFile.GetUserStoreForApplication();
isf = new IsolatedStorageFileStream("track.aac", System.IO.FileMode.Create, iso);
isf.Close();
Udp_Socket_EvntArgs.RemoteEndPoint = new IPEndPoint(IPAddress.Any, SetupFrame.Server_RTP_Port);
Udp_Socket_EvntArgs.SetBuffer(new byte[MAX_BUFFER_SIZE], 0, MAX_BUFFER_SIZE);
UDP_SOCKET.ReceiveFromAsync(Udp_Socket_EvntArgs);
break;
case COMMAND.PAUSE:
break;
case COMMAND.TEARDOWN:
SendMessage(RTSP_COMMANDS.Teardown(PlayFrame, SetupFrame));
break;
}
break;
}
}