예제 #1
0
        /// <summary>
        /// Send a PLAY request to the RTSP server to commence the media stream.
        /// </summary>
        public void Play()
        {
            ThreadPool.QueueUserWorkItem(delegate { ProcessRTPPackets(); });
            ThreadPool.QueueUserWorkItem(delegate { SendKeepAlives(); });

            RTSPRequest playRequest = new RTSPRequest(RTSPMethodsEnum.PLAY, _url);
            RTSPHeader  playHeader  = new RTSPHeader(_cseq++, _rtspSession.SessionID);

            playRequest.Header = playHeader;

            System.Diagnostics.Debug.WriteLine(playRequest.ToString());

            var rtspRequestBuffer = Encoding.UTF8.GetBytes(playRequest.ToString());

            _rtspStream.Write(rtspRequestBuffer, 0, rtspRequestBuffer.Length);

            var buffer    = new byte[2048];
            var bytesRead = _rtspStream.Read(buffer, 0, 2048);

            if (bytesRead > 0)
            {
                System.Diagnostics.Debug.WriteLine(Encoding.UTF8.GetString(buffer, 0, bytesRead));

                var rtspMessage = RTSPMessage.ParseRTSPMessage(buffer, null, null);

                if (rtspMessage.RTSPMessageType == RTSPMessageTypesEnum.Response)
                {
                    var playResponse = RTSPResponse.ParseRTSPResponse(rtspMessage);
                    logger.Debug("RTSP Response received to PLAY: " + playResponse.StatusCode + " " + playResponse.Status + " " + playResponse.ReasonPhrase + ".");
                }
            }
            else
            {
                throw new ApplicationException("Zero bytes were read from the RTSP client socket in response to a PLAY request.");
            }
        }
예제 #2
0
        public void Start(string url)
        {
            _url = url;

            Match urlMatch = Regex.Match(url, @"rtsp://(?<hostname>\S+?)/", RegexOptions.IgnoreCase);

            if (!urlMatch.Success)
            {
                throw new ApplicationException("The URL provided to the RTSP client was not recognised, " + url + ".");
            }
            else
            {
                string hostname = urlMatch.Result("${hostname}");
                int    port     = RTSP_PORT;

                if (hostname.Contains(':'))
                {
                    port     = GB28181.SIPSorcery.Sys.IPSocket.ParsePortFromSocket(hostname);
                    hostname = GB28181.SIPSorcery.Sys.IPSocket.ParseHostFromSocket(hostname);
                }

                logger.Debug("RTSP client connecting to " + hostname + ", port " + port + ".");

                _rtspConnection = new TcpClient(hostname, port);
                _rtspStream     = _rtspConnection.GetStream();

                _rtspSession = new RTSPSession();
                _rtspSession.RTPPayloadHeaderLength = _rtpPayloadHeaderLength;
                _rtspSession.ReservePorts();
                _rtspSession.OnRTPQueueFull += RTPQueueFull;

                RTSPRequest rtspRequest = new RTSPRequest(RTSPMethodsEnum.SETUP, url);
                RTSPHeader  rtspHeader  = new RTSPHeader(_cseq++, null);
                rtspHeader.Transport = new RTSPTransportHeader()
                {
                    ClientRTPPortRange = _rtspSession.RTPPort + "-" + _rtspSession.ControlPort
                };
                rtspRequest.Header = rtspHeader;
                string rtspReqStr = rtspRequest.ToString();

                RTSPMessage rtspMessage = null;

                System.Diagnostics.Debug.WriteLine(rtspReqStr);

                byte[] rtspRequestBuffer = Encoding.UTF8.GetBytes(rtspReqStr);
                _rtspStream.Write(rtspRequestBuffer, 0, rtspRequestBuffer.Length);

                byte[] buffer    = new byte[2048];
                int    bytesRead = _rtspStream.Read(buffer, 0, 2048);

                if (bytesRead > 0)
                {
                    System.Diagnostics.Debug.WriteLine(Encoding.UTF8.GetString(buffer, 0, bytesRead));

                    rtspMessage = RTSPMessage.ParseRTSPMessage(buffer, null, null);

                    if (rtspMessage.RTSPMessageType == RTSPMessageTypesEnum.Response)
                    {
                        var setupResponse = RTSPResponse.ParseRTSPResponse(rtspMessage);

                        if (setupResponse.Status == RTSPResponseStatusCodesEnum.OK)
                        {
                            _rtspSession.SessionID      = setupResponse.Header.Session;
                            _rtspSession.RemoteEndPoint = new IPEndPoint((_rtspConnection.Client.RemoteEndPoint as IPEndPoint).Address, setupResponse.Header.Transport.GetServerRTPPort());
                            _rtspSession.Start();

                            logger.Debug("RTSP Response received to SETUP: " + setupResponse.Status + ", session ID " + _rtspSession.SessionID + ", server RTP endpoint " + _rtspSession.RemoteEndPoint + ".");

                            if (OnSetupSuccess != null)
                            {
                                OnSetupSuccess(this);
                            }
                        }
                        else
                        {
                            logger.Warn("RTSP Response received to SETUP: " + setupResponse.Status + ".");
                            throw new ApplicationException("An error response of " + setupResponse.Status + " was received for an RTSP setup request.");
                        }
                    }
                }
                else
                {
                    throw new ApplicationException("Zero bytes were read from the RTSP client socket in response to a SETUP request.");
                }
            }
        }