/// <summary>
/// Attempts to determine which media stream a received RTP packet is for.
/// </summary>
/// <param name="header">The header of the received RTP packet.</param>
/// <returns>The media type for the received packet or null if it could not be determined.</returns>
private SDPMediaTypesEnum?GetMediaTypeForRtpPacket(RTPHeader header)
{
if (m_audioStream != null && m_audioStream.RemoteSsrc == header.SyncSource)
{
return(SDPMediaTypesEnum.audio);
}
else if (m_videoStream != null && m_videoStream.RemoteSsrc == header.SyncSource)
{
return(SDPMediaTypesEnum.video);
}
else if (m_audioStream != null && m_videoStream == null)
{
if (m_audioStream.RemoteSsrc == null)
{
m_audioStream.RemoteSsrc = header.SyncSource;
}
return(SDPMediaTypesEnum.audio);
}
else if (m_videoStream != null && m_audioStream == null)
{
if (m_videoStream.RemoteSsrc == null)
{
m_videoStream.RemoteSsrc = header.SyncSource;
}
return(SDPMediaTypesEnum.video);
}
else if (m_videoStream != null && !m_videoStream.RemoteSsrc.HasValue && m_videoStream.IsRemotePayloadIDMatch(header.PayloadType))
{
m_videoStream.RemoteSsrc = header.SyncSource;
return(SDPMediaTypesEnum.video);
}
else if (m_audioStream != null && !m_audioStream.RemoteSsrc.HasValue &&
(m_audioStream.IsRemotePayloadIDMatch(header.PayloadType) || m_audioStream.RemotePayloadIDs == null))
{
// For audio only SIP calls it's likely that setting the payload ID's will be
// overlooked. Assume that if nothing previous has matched then this is an audio
// RTP packet from the remote party.
m_audioStream.RemoteSsrc = header.SyncSource;
return(SDPMediaTypesEnum.audio);
}
else
{
logger.LogWarning("An RTP packet was received that could not be matched to an audio or video stream.");
return(null);
}
}
public RTPPacket(byte[] packet)
{
Header = new RTPHeader(packet);
Payload = new byte[packet.Length - Header.Length];
Array.Copy(packet, Header.Length, Payload, 0, Payload.Length);
}
public RTPPacket(int payloadSize)
{
Header = new RTPHeader();
Payload = new byte[payloadSize];
}
public RTPPacket()
{
Header = new RTPHeader();
}
public void CustomisedHeaderRoundTripTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPHeader src = new RTPHeader();
src.Version = 3;
src.PaddingFlag = 1;
src.HeaderExtensionFlag = 1;
src.MarkerBit = 1;
src.CSRCCount = 3;
src.PayloadType = (int)RTPPayloadTypesEnum.GSM;
byte[] headerBuffer = src.GetHeader(1, 0, 1);
RTPHeader dst = new RTPHeader(headerBuffer);
Console.WriteLine("Versions: " + src.Version + ", " + dst.Version);
Console.WriteLine("PaddingFlag: " + src.PaddingFlag + ", " + dst.PaddingFlag);
Console.WriteLine("HeaderExtensionFlag: " + src.HeaderExtensionFlag + ", " + dst.HeaderExtensionFlag);
Console.WriteLine("CSRCCount: " + src.CSRCCount + ", " + dst.CSRCCount);
Console.WriteLine("MarkerBit: " + src.MarkerBit + ", " + dst.MarkerBit);
Console.WriteLine("PayloadType: " + src.PayloadType + ", " + dst.PayloadType);
Console.WriteLine("SequenceNumber: " + src.SequenceNumber + ", " + dst.SequenceNumber);
Console.WriteLine("Timestamp: " + src.Timestamp + ", " + dst.Timestamp);
Console.WriteLine("SyncSource: " + src.SyncSource + ", " + dst.SyncSource);
string rawHeader = null;
foreach(byte headerByte in headerBuffer)
{
rawHeader += headerByte.ToString("x");
}
Console.WriteLine("Raw Header: " + rawHeader);
Assert.IsTrue(src.Version == dst.Version, "Version was mismatched.");
Assert.IsTrue(src.PaddingFlag == dst.PaddingFlag, "PaddingFlag was mismatched.");
Assert.IsTrue(src.HeaderExtensionFlag == dst.HeaderExtensionFlag, "HeaderExtensionFlag was mismatched.");
Assert.IsTrue(src.CSRCCount == dst.CSRCCount, "CSRCCount was mismatched.");
Assert.IsTrue(src.MarkerBit == dst.MarkerBit, "MarkerBit was mismatched.");
Assert.IsTrue(src.SequenceNumber == dst.SequenceNumber, "PayloadType was mismatched.");
Assert.IsTrue(src.HeaderExtensionFlag == dst.HeaderExtensionFlag, "SequenceNumber was mismatched.");
Assert.IsTrue(src.Timestamp == dst.Timestamp, "Timestamp was mismatched.");
Assert.IsTrue(src.SyncSource == dst.SyncSource, "SyncSource was mismatched.");
}
public void HeaderRoundTripTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPHeader src = new RTPHeader();
byte[] headerBuffer = src.GetHeader(1, 0, 1);
RTPHeader dst = new RTPHeader(headerBuffer);
Console.WriteLine("Versions: " + src.Version + ", " + dst.Version);
Console.WriteLine("PaddingFlag: " + src.PaddingFlag + ", " + dst.PaddingFlag);
Console.WriteLine("HeaderExtensionFlag: " + src.HeaderExtensionFlag + ", " + dst.HeaderExtensionFlag);
Console.WriteLine("CSRCCount: " + src.CSRCCount + ", " + dst.CSRCCount);
Console.WriteLine("MarkerBit: " + src.MarkerBit + ", " + dst.MarkerBit);
Console.WriteLine("PayloadType: " + src.PayloadType + ", " + dst.PayloadType);
Console.WriteLine("SequenceNumber: " + src.SequenceNumber + ", " + dst.SequenceNumber);
Console.WriteLine("Timestamp: " + src.Timestamp + ", " + dst.Timestamp);
Console.WriteLine("SyncSource: " + src.SyncSource + ", " + dst.SyncSource);
Console.WriteLine("Raw Header: " + System.Text.Encoding.ASCII.GetString(headerBuffer, 0, headerBuffer.Length));
Assert.IsTrue(src.Version == dst.Version, "Version was mismatched.");
Assert.IsTrue(src.PaddingFlag == dst.PaddingFlag, "PaddingFlag was mismatched.");
Assert.IsTrue(src.HeaderExtensionFlag == dst.HeaderExtensionFlag, "HeaderExtensionFlag was mismatched.");
Assert.IsTrue(src.CSRCCount == dst.CSRCCount, "CSRCCount was mismatched.");
Assert.IsTrue(src.MarkerBit == dst.MarkerBit, "MarkerBit was mismatched.");
Assert.IsTrue(src.SequenceNumber == dst.SequenceNumber, "PayloadType was mismatched.");
Assert.IsTrue(src.HeaderExtensionFlag == dst.HeaderExtensionFlag, "SequenceNumber was mismatched.");
Assert.IsTrue(src.Timestamp == dst.Timestamp, "Timestamp was mismatched.");
Assert.IsTrue(src.SyncSource == dst.SyncSource, "SyncSource was mismatched.");
}
public void GetHeaderTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPHeader rtpHeader = new RTPHeader();
byte[] headerBuffer = rtpHeader.GetHeader(1, 0, 1);
int byteNum = 1;
foreach(byte headerByte in headerBuffer)
{
Console.WriteLine(byteNum + ": " + headerByte.ToString("x"));
byteNum++;
}
}
public RTPPacket(byte[] packet)
{
Header = new RTPHeader(packet);
}
public RTPPacket(int payloadSize)
{
Header = new RTPHeader();
Payload = new byte[payloadSize]; //GetNullPayload(payloadSize);
}
public RTPPacket()
{
Header = new RTPHeader();
}
public RTPPacket(byte[] packet)
{
Header = new RTPHeader(packet);
Payload = new byte[packet.Length - Header.Length];
Array.Copy(packet, Header.Length, Payload, 0, Payload.Length);
}
public RTPPacket(int payloadSize)
{
Header = new RTPHeader();
Payload = new byte[payloadSize];
}
private void Send()
{
try
{
int payloadSize = RTPPacketSendSize;
RTPPacket rtpPacket = new RTPPacket(RTPPacketSendSize);
byte[] rtpBytes = rtpPacket.GetBytes();
RTPHeader rtpHeader = new RTPHeader();
rtpHeader.SequenceNumber = (UInt16)65000; //Convert.ToUInt16(Crypto.GetRandomInt(0, UInt16.MaxValue));
uint sendTimestamp = uint.MaxValue - 5000;
uint lastSendTimestamp = sendTimestamp;
UInt16 lastSeqNum = 0;
logger.Debug("RTP send stream starting to " + IPSocket.GetSocketString(m_streamEndPoint) + " with payload size " + payloadSize + " bytes.");
Sending = true;
m_startRTPSendTime = DateTime.MinValue;
m_lastRTPSentTime = DateTime.MinValue;
m_sampleStartSeqNo = rtpHeader.SequenceNumber;
DateTime lastRTPSendAttempt = DateTime.Now;
while (m_udpListener != null && !StopListening)
{
// This may be changed by the listener so it needs to be set each iteration.
IPEndPoint dstEndPoint = m_streamEndPoint;
//logger.Info("Sending RTP packet to " + dstEndPoint.Address + ":" + dstEndPoint.Port);
if (payloadSize != m_rtpPacketSendSize)
{
payloadSize = m_rtpPacketSendSize;
logger.Info("Changing RTP payload to " + payloadSize);
rtpPacket = new RTPPacket(RTP_HEADER_SIZE + m_rtpPacketSendSize);
rtpBytes = rtpPacket.GetBytes();
}
try
{
if (m_startRTPSendTime == DateTime.MinValue)
{
m_startRTPSendTime = DateTime.Now;
rtpHeader.MarkerBit = 0;
logger.Debug("RTPSink Send SyncSource=" + rtpPacket.Header.SyncSource + ".");
}
else
{
lastSendTimestamp = sendTimestamp;
double milliSinceLastSend = DateTime.Now.Subtract(m_lastRTPSentTime).TotalMilliseconds;
sendTimestamp = Convert.ToUInt32((lastSendTimestamp + (milliSinceLastSend * TIMESTAMP_FACTOR)) % uint.MaxValue);
if (lastSendTimestamp > sendTimestamp)
{
logger.Error("RTP Sender previous timestamp (" + lastSendTimestamp + ") > timestamp (" + sendTimestamp + ") ms since last send=" + milliSinceLastSend + ", lastseqnum=" + lastSeqNum + ", seqnum=" + rtpHeader.SequenceNumber + ".");
}
if (DateTime.Now.Subtract(m_lastRTPSentTime).TotalMilliseconds > 75)
{
logger.Debug("delayed send: " + rtpHeader.SequenceNumber + ", time since last send " + DateTime.Now.Subtract(m_lastRTPSentTime).TotalMilliseconds + "ms.");
}
}
rtpHeader.Timestamp = sendTimestamp;
byte[] rtpHeaderBytes = rtpHeader.GetBytes();
Array.Copy(rtpHeaderBytes, 0, rtpBytes, 0, rtpHeaderBytes.Length);
// Send RTP packets and any extra channels required to emulate mutliple calls.
for (int channelCount = 0; channelCount < m_channels; channelCount++)
{
//logger.Debug("Send rtp getting wallclock timestamp for " + DateTime.Now.ToString("dd MMM yyyy HH:mm:ss:fff"));
//DateTime sendTime = DateTime.Now;
//rtpHeader.Timestamp = RTPHeader.GetWallclockUTCStamp(sendTime);
//logger.Debug(rtpHeader.SequenceNumber + "," + rtpHeader.Timestamp);
m_udpListener.Send(rtpBytes, rtpBytes.Length, dstEndPoint);
m_lastRTPSentTime = DateTime.Now;
m_packetsSent++;
m_bytesSent += rtpBytes.Length;
if (m_packetsSent % 500 == 0)
{
logger.Debug("Total packets sent to " + dstEndPoint.ToString() + " " + m_packetsSent + ", bytes " + NumberFormatter.ToSIByteFormat(m_bytesSent, 2) + ".");
}
//sendLogger.Info(m_lastRTPSentTime.ToString("dd MMM yyyy HH:mm:ss:fff") + "," + m_lastRTPSentTime.Subtract(m_startRTPSendTime).TotalMilliseconds.ToString("0") + "," + rtpHeader.SequenceNumber + "," + rtpBytes.Length);
//sendLogger.Info(rtpHeader.SequenceNumber + "," + DateTime.Now.ToString("dd MMM yyyy HH:mm:ss:fff"));
if (DataSent != null)
{
try
{
DataSent(m_streamId, rtpBytes, dstEndPoint);
}
catch (Exception excp)
{
logger.Error("Exception RTPSink DataSent. " + excp.Message);
}
}
lastSeqNum = rtpHeader.SequenceNumber;
if (rtpHeader.SequenceNumber == UInt16.MaxValue)
{
//logger.Debug("RTPSink looping the sequence number in sample.");
rtpHeader.SequenceNumber = 0;
}
else
{
rtpHeader.SequenceNumber++;
}
}
}
catch (Exception excp)
{
logger.Error("Exception RTP Send. " + excp.GetType() + ". " + excp.Message);
if (excp.GetType() == typeof(SocketException))
{
logger.Error("socket exception errorcode=" + ((SocketException)excp).ErrorCode + ".");
}
logger.Warn("Remote socket closed on send. Last RTP recevied " + m_lastRTPReceivedTime.ToString("dd MMM yyyy HH:mm:ss") + ", last RTP successfull send " + m_lastRTPSentTime.ToString("dd MMM yyyy HH:mm:ss") + ".");
}
Thread.Sleep(RTPFrameSize);
#region Check for whether the stream has timed out on a send or receive and if so shut down the stream.
double noRTPRcvdDuration = (m_lastRTPReceivedTime != DateTime.MinValue) ? DateTime.Now.Subtract(m_lastRTPReceivedTime).TotalSeconds : 0;
double noRTPSentDuration = (m_lastRTPSentTime != DateTime.MinValue) ? DateTime.Now.Subtract(m_lastRTPSentTime).TotalSeconds : 0;
double testDuration = DateTime.Now.Subtract(m_startRTPSendTime).TotalSeconds;
if ((
noRTPRcvdDuration > NO_RTP_TIMEOUT ||
noRTPSentDuration > NO_RTP_TIMEOUT ||
(m_lastRTPReceivedTime == DateTime.MinValue && testDuration > NO_RTP_TIMEOUT)) && // If the test request comes from a private or unreachable IP address then no RTP will ever be received.
StopIfNoData)
{
logger.Warn("Disconnecting RTP stream on " + m_localEndPoint.Address.ToString() + ":" + m_localEndPoint.Port + " due to not being able to send any RTP for " + NO_RTP_TIMEOUT + "s.");
StopListening = true;
}
// Shutdown the socket even if there is still RTP but the stay alive limit has been exceeded.
if (RTPMaxStayAlive > 0 && DateTime.Now.Subtract(m_startRTPSendTime).TotalSeconds > RTPMaxStayAlive)
{
logger.Warn("Shutting down RTPSink due to passing RTPMaxStayAlive time.");
Shutdown();
StopListening = true;
}
#endregion
}
}
catch (Exception excp)
{
logger.Error("Exception Send RTPSink: " + excp.Message);
}
finally
{
#region Shut down socket.
Shutdown();
if (SenderClosed != null)
{
try
{
SenderClosed(m_streamId, m_callDescriptorId);
}
catch (Exception excp)
{
logger.Error("Exception RTPSink SenderClosed. " + excp.Message);
}
}
#endregion
}
}
private void RTPPacketReceived(UDPListener listener, IPEndPoint localEndPoint, IPEndPoint remoteEndPoint, byte[] buffer)
{
if ((buffer[0] == 0x0 || buffer[0] == 0x1) && buffer.Length >= 20)
{
// Probably a STUN request.
STUNMessage stunMessage = STUNMessage.ParseSTUNMessage(buffer, buffer.Length);
if (stunMessage != null)
{
logger.Debug("STUN message received on RTP channel " + stunMessage.Header.MessageType + ".");
if (stunMessage.Header.MessageType == STUNMessageTypesEnum.BindingRequest)
{
logger.Debug("RTP channel sending STUN response to " + remoteEndPoint + ".");
STUNMessage stunResponse = new STUNMessage();
stunResponse.Header.MessageType = STUNMessageTypesEnum.BindingResponse;
stunResponse.Header.TransactionId = stunMessage.Header.TransactionId;
stunResponse.AddUsernameAttribute(Encoding.UTF8.GetString(stunMessage.Attributes[0].Value));
byte[] stunRespBytes = stunResponse.ToByteBuffer();
SendRaw(remoteEndPoint, stunRespBytes, stunRespBytes.Length);
}
}
}
else
{
logger.Debug("RTP packet received from " + remoteEndPoint + ".");
if (SampleReceived != null)
{
var rtpHeader = new RTPHeader(buffer);
SampleReceived(buffer, rtpHeader.Length);
}
}
}
private void Send()
{
try
{
int payloadSize = RTPPacketSendSize;
RTPPacket rtpPacket = new RTPPacket(RTPPacketSendSize);
byte[] rtpBytes = rtpPacket.GetBytes();
RTPHeader rtpHeader = new RTPHeader();
rtpHeader.SequenceNumber = (UInt16)65000; //Convert.ToUInt16(Crypto.GetRandomInt(0, UInt16.MaxValue));
uint sendTimestamp = uint.MaxValue - 5000;
uint lastSendTimestamp = sendTimestamp;
UInt16 lastSeqNum = 0;
logger.Debug("RTP send stream starting to " + IPSocket.GetSocketString(m_streamEndPoint) + " with payload size " + payloadSize + " bytes.");
Sending = true;
m_startRTPSendTime = DateTime.MinValue;
m_lastRTPSentTime = DateTime.MinValue;
m_sampleStartSeqNo = rtpHeader.SequenceNumber;
DateTime lastRTPSendAttempt = DateTime.Now;
while (m_udpListener != null && !StopListening)
{
// This may be changed by the listener so it needs to be set each iteration.
IPEndPoint dstEndPoint = m_streamEndPoint;
//logger.Info("Sending RTP packet to " + dstEndPoint.Address + ":" + dstEndPoint.Port);
if (payloadSize != m_rtpPacketSendSize)
{
payloadSize = m_rtpPacketSendSize;
logger.Info("Changing RTP payload to " + payloadSize);
rtpPacket = new RTPPacket(RTP_HEADER_SIZE + m_rtpPacketSendSize);
rtpBytes = rtpPacket.GetBytes();
}
try
{
if (m_startRTPSendTime == DateTime.MinValue)
{
m_startRTPSendTime = DateTime.Now;
rtpHeader.MarkerBit = 0;
logger.Debug("RTPSink Send SyncSource=" + rtpPacket.Header.SyncSource + ".");
}
else
{
lastSendTimestamp = sendTimestamp;
double milliSinceLastSend = DateTime.Now.Subtract(m_lastRTPSentTime).TotalMilliseconds;
sendTimestamp = Convert.ToUInt32((lastSendTimestamp + (milliSinceLastSend * TIMESTAMP_FACTOR)) % uint.MaxValue);
if (lastSendTimestamp > sendTimestamp)
{
logger.Error("RTP Sender previous timestamp (" + lastSendTimestamp + ") > timestamp (" + sendTimestamp + ") ms since last send=" + milliSinceLastSend + ", lastseqnum=" + lastSeqNum + ", seqnum=" + rtpHeader.SequenceNumber + ".");
}
if (DateTime.Now.Subtract(m_lastRTPSentTime).TotalMilliseconds > 75)
{
logger.Debug("delayed send: " + rtpHeader.SequenceNumber + ", time since last send " + DateTime.Now.Subtract(m_lastRTPSentTime).TotalMilliseconds + "ms.");
}
}
rtpHeader.Timestamp = sendTimestamp;
byte[] rtpHeaderBytes = rtpHeader.GetBytes();
Array.Copy(rtpHeaderBytes, 0, rtpBytes, 0, rtpHeaderBytes.Length);
// Send RTP packets and any extra channels required to emulate mutliple calls.
for (int channelCount = 0; channelCount < m_channels; channelCount++)
{
//logger.Debug("Send rtp getting wallclock timestamp for " + DateTime.Now.ToString("dd MMM yyyy HH:mm:ss:fff"));
//DateTime sendTime = DateTime.Now;
//rtpHeader.Timestamp = RTPHeader.GetWallclockUTCStamp(sendTime);
//logger.Debug(rtpHeader.SequenceNumber + "," + rtpHeader.Timestamp);
m_udpListener.Send(rtpBytes, rtpBytes.Length, dstEndPoint);
m_lastRTPSentTime = DateTime.Now;
m_packetsSent++;
m_bytesSent += rtpBytes.Length;
if (m_packetsSent % 500 == 0)
{
logger.Debug("Total packets sent to " + dstEndPoint.ToString() + " " + m_packetsSent + ", bytes " + NumberFormatter.ToSIByteFormat(m_bytesSent, 2) + ".");
}
//sendLogger.Info(m_lastRTPSentTime.ToString("dd MMM yyyy HH:mm:ss:fff") + "," + m_lastRTPSentTime.Subtract(m_startRTPSendTime).TotalMilliseconds.ToString("0") + "," + rtpHeader.SequenceNumber + "," + rtpBytes.Length);
//sendLogger.Info(rtpHeader.SequenceNumber + "," + DateTime.Now.ToString("dd MMM yyyy HH:mm:ss:fff"));
if (DataSent != null)
{
try
{
DataSent(m_streamId, rtpBytes, dstEndPoint);
}
catch (Exception excp)
{
logger.Error("Exception RTPSink DataSent. " + excp.Message);
}
}
lastSeqNum = rtpHeader.SequenceNumber;
if (rtpHeader.SequenceNumber == UInt16.MaxValue)
{
//logger.Debug("RTPSink looping the sequence number in sample.");
rtpHeader.SequenceNumber = 0;
}
else
{
rtpHeader.SequenceNumber++;
}
}
}
catch (Exception excp)
{
logger.Error("Exception RTP Send. " + excp.GetType() + ". " + excp.Message);
if (excp.GetType() == typeof(SocketException))
{
logger.Error("socket exception errorcode=" + ((SocketException)excp).ErrorCode + ".");
}
logger.Warn("Remote socket closed on send. Last RTP recevied " + m_lastRTPReceivedTime.ToString("dd MMM yyyy HH:mm:ss") + ", last RTP successfull send " + m_lastRTPSentTime.ToString("dd MMM yyyy HH:mm:ss") + ".");
}
Thread.Sleep(RTPFrameSize);
#region Check for whether the stream has timed out on a send or receive and if so shut down the stream.
double noRTPRcvdDuration = (m_lastRTPReceivedTime != DateTime.MinValue) ? DateTime.Now.Subtract(m_lastRTPReceivedTime).TotalSeconds : 0;
double noRTPSentDuration = (m_lastRTPSentTime != DateTime.MinValue) ? DateTime.Now.Subtract(m_lastRTPSentTime).TotalSeconds : 0;
double testDuration = DateTime.Now.Subtract(m_startRTPSendTime).TotalSeconds;
if ((
noRTPRcvdDuration > NO_RTP_TIMEOUT ||
noRTPSentDuration > NO_RTP_TIMEOUT ||
(m_lastRTPReceivedTime == DateTime.MinValue && testDuration > NO_RTP_TIMEOUT)) // If the test request comes from a private or unreachable IP address then no RTP will ever be received.
&& StopIfNoData)
{
logger.Warn("Disconnecting RTP stream on " + m_localEndPoint.Address.ToString() + ":" + m_localEndPoint.Port + " due to not being able to send any RTP for " + NO_RTP_TIMEOUT + "s.");
StopListening = true;
}
// Shutdown the socket even if there is still RTP but the stay alive limit has been exceeded.
if (RTPMaxStayAlive > 0 && DateTime.Now.Subtract(m_startRTPSendTime).TotalSeconds > RTPMaxStayAlive)
{
logger.Warn("Shutting down RTPSink due to passing RTPMaxStayAlive time.");
Shutdown();
StopListening = true;
}
#endregion
}
}
catch (Exception excp)
{
logger.Error("Exception Send RTPSink: " + excp.Message);
}
finally
{
#region Shut down socket.
Shutdown();
if (SenderClosed != null)
{
try
{
SenderClosed(m_streamId, m_callDescriptorId);
}
catch (Exception excp)
{
logger.Error("Exception RTPSink SenderClosed. " + excp.Message);
}
}
#endregion
}
}
private void SocketRead_Completed(object sender, SocketAsyncEventArgs e)
{
try
{
if (e.SocketError == SocketError.Success)
{
if (e.Buffer == null || e.Buffer.Length == 0)
{
// No need to care about zero byte packets.
//string remoteEndPoint = (inEndPoint != null) ? inEndPoint.ToString() : "could not determine";
//logger.Error("Zero bytes received on SIPUDPChannel " + m_localSIPEndPoint.ToString() + ".");
}
else
{
Debug.WriteLine("RTP packet received from " + e.RemoteEndPoint + ".");
logger.Debug("RTP packet received from " + e.RemoteEndPoint + ".");
if (SampleReceived != null)
{
try
{
var rtpBytes = e.Buffer.Take(e.BytesTransferred).ToArray();
var rtpHeader = new RTPHeader(rtpBytes);
SampleReceived(rtpBytes, rtpHeader.Length);
}
catch (Exception rtpParseExcp)
{
logger.Error("Exception WPRTPChannel parsing RTP. " + rtpParseExcp.Message);
}
}
}
}
else
{
Debug.WriteLine("Error listening on WPRTPChannel. " + e.SocketError.ToString());
logger.Error("Error listening on WPRTPChannel. " + e.SocketError.ToString());
}
if (!m_isClosed)
{
SocketAsyncEventArgs receiveArgs = new SocketAsyncEventArgs();
receiveArgs.RemoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
receiveArgs.SetBuffer(new Byte[MaxRTPMessageSize], 0, MaxRTPMessageSize);
receiveArgs.Completed += SocketRead_Completed;
m_rtpListener.ReceiveAsync(receiveArgs);
}
}
catch (Exception excp)
{
logger.Error("Exception WPRTPChannel SocketRead_Completed. " + excp.Message);
throw;
}
}
