Exemplo n.º 1
0
        public RtspStatusCode TearDown()
        {
            if ((_rtspSocket == null))
            {
                Connect();
            }
            RtspResponse response;
            var          request = new RtspRequest(RtspMethod.Teardown, string.Format("rtsp://{0}:{1}/stream={2}", _rtspDevice.ServerAddress, 554, _rtspStreamId), 1, 0);

            request.Headers.Add("Session", _rtspSessionId);
            SendRequest(request);
            ReceiveResponse(out response);

            if (_rtpListener != null)
            {
                _rtpListener.Dispose();
                _rtpListener = null;
            }
            if (_rtcpListener != null)
            {
                _rtcpListener.Dispose();
                _rtcpListener.PacketReceived -= new RtcpListener.PacketReceivedHandler(RtcpPacketReceived);
                _rtcpListener = null;
            }
            StopKeepAliveThread();
            return(response.StatusCode);
        }
Exemplo n.º 2
0
        public RtspStatusCode Setup(string query, TransmissionMode transmissionmode)
        {
            RtspRequest  request;
            RtspResponse response;

            if ((_rtspSocket == null))
            {
                Connect();
            }
            if (string.IsNullOrEmpty(_rtspSessionId))
            {
                request = new RtspRequest(RtspMethod.Setup, string.Format("rtsp://{0}:{1}/?{2}", _rtspDevice.ServerAddress, 554, query), 1, 0);
                switch (transmissionmode)
                {
                case TransmissionMode.Multicast:
                    request.Headers.Add("Transport", string.Format("RTP/AVP;{0}", transmissionmode.ToString().ToLower()));
                    break;

                case TransmissionMode.Unicast:
                    var activeTcpConnections = IPGlobalProperties.GetIPGlobalProperties().GetActiveTcpConnections();
                    var usedPorts            = new HashSet <int>();
                    foreach (var connection in activeTcpConnections)
                    {
                        usedPorts.Add(connection.LocalEndPoint.Port);
                    }
                    for (var port = 40000; port <= 65534; port += 2)
                    {
                        if (!usedPorts.Contains(port) && !usedPorts.Contains(port + 1))
                        {
                            _rtpPort  = port;
                            _rtcpPort = port + 1;
                            break;
                        }
                    }
                    request.Headers.Add("Transport", string.Format("RTP/AVP;{0};client_port={1}-{2}", transmissionmode.ToString().ToLower(), _rtpPort, _rtcpPort));
                    break;
                }
            }
            else
            {
                request = new RtspRequest(RtspMethod.Setup, string.Format("rtsp://{0}:{1}/?{2}", _rtspDevice.ServerAddress, 554, query), 1, 0);
                switch (transmissionmode)
                {
                case TransmissionMode.Multicast:
                    request.Headers.Add("Session", _rtspSessionId);
                    request.Headers.Add("Transport", string.Format("RTP/AVP;{0}", transmissionmode.ToString().ToLower()));
                    break;

                case TransmissionMode.Unicast:
                    request.Headers.Add("Session", _rtspSessionId);
                    request.Headers.Add("Transport", string.Format("RTP/AVP;{0};client_port={1}-{2}", transmissionmode.ToString().ToLower(), _rtpPort, _rtcpPort));
                    break;
                }
            }
            SendRequest(request);
            ReceiveResponse(out response);
            if (response.StatusCode == RtspStatusCode.Ok)
            {
                if (!response.Headers.TryGetValue("com.ses.streamID", out _rtspStreamId))
                {
                    Logger.Error(string.Format("Failed to tune, not able to locate Stream ID header in RTSP SETUP response"));
                }
                string sessionHeader;
                if (!response.Headers.TryGetValue("Session", out sessionHeader))
                {
                    Logger.Error(string.Format("Failed to tune, not able to locate Session header in RTSP SETUP response"));
                }
                ProcessSessionHeader(sessionHeader, "Setup");
                string transportHeader;
                if (!response.Headers.TryGetValue("Transport", out transportHeader))
                {
                    Logger.Error(string.Format("Failed to tune, not able to locate Transport header in RTSP SETUP response"));
                }
                ProcessTransportHeader(transportHeader);

                StartKeepAliveThread();
                _rtpListener = new RtpListener(Destination, RtpPort, transmissionmode);
                _rtpListener.StartRtpListenerThread();

                _rtcpListener = new RtcpListener(Destination, RtcpPort, transmissionmode);
                _rtcpListener.PacketReceived += new RtcpListener.PacketReceivedHandler(RtcpPacketReceived);
                _rtcpListener.StartRtcpListenerThread();
            }
            return(response.StatusCode);
        }