/// <summary>
/// Event handler for an RTCP packet being received from the remote party.
/// </summary>
/// <param name="remoteEndPoint">The end point the packet was received from.</param>
/// <param name="buffer">The data received.</param>
internal void ControlDataReceived(IPEndPoint remoteEndPoint, byte[] buffer)
{
try
{
var rtcpCompoundPacket = new RTCPCompoundPacket(buffer);
if (rtcpCompoundPacket != null && rtcpCompoundPacket.SenderReport != null)
{
if (m_receptionReport == null)
{
m_receptionReport = new ReceptionReport(rtcpCompoundPacket.SenderReport.SSRC);
}
m_receptionReport.RtcpSenderReportReceived(rtcpCompoundPacket.SenderReport.NtpTimestamp);
var sr = rtcpCompoundPacket.SenderReport;
logger.LogDebug($"Received RtcpSenderReport from {remoteEndPoint} pkts {sr.PacketCount} bytes {sr.OctetCount}");
}
}
catch (Exception excp)
{
logger.LogError($"Exception RTCPSession.ControlDataReceived. {excp.Message}");
}
}
/// <summary>
/// Removes the reception report when the remote party indicates no more RTP packets
/// for that SSRC will be received by sending an RTCP BYE.
/// </summary>
/// <param name="ssrc">The SSRC of the reception report being closed. Typically this
/// should be the SSRC received in the RTCP BYE.</param>
internal void RemoveReceptionReport(uint ssrc)
{
if (m_receptionReport != null && m_receptionReport.SSRC == ssrc)
{
logger.LogDebug($"RTCP session removing reception report for remote ssrc {ssrc}.");
m_receptionReport = null;
}
}
/// <summary>
/// Event handler for an RTP packet being received by the RTP session.
/// Used for measuring transmission statistics.
/// </summary>
internal void RecordRtpPacketReceived(RTPPacket rtpPacket)
{
LastActivityAt = DateTime.Now;
IsTimedOut = false;
PacketsReceivedCount++;
OctetsReceivedCount += (uint)rtpPacket.Payload.Length;
if (m_receptionReport == null)
{
m_receptionReport = new ReceptionReport(rtpPacket.Header.SyncSource);
}
m_receptionReport.RtpPacketReceived(rtpPacket.Header.SequenceNumber, rtpPacket.Header.Timestamp, DateTimeToNtpTimestamp32(DateTime.Now));
}
/// <summary>
/// Event handler for an RTP packet being received by the RTP session.
/// </summary>
internal void RtpPacketReceived(RTPPacket rtpPacket)
{
RTPLastActivityAt = DateTime.Now;
PacketsReceivedCount++;
OctetsReceivedCount += (uint)rtpPacket.Payload.Length;
if (m_receptionReport == null)
{
m_receptionReport = new ReceptionReport(rtpPacket.Header.SyncSource);
}
bool ready = m_receptionReport.RtpPacketReceived(rtpPacket.Header.SequenceNumber, rtpPacket.Header.Timestamp, DateTimeToNtpTimestamp32(DateTime.Now));
if (!m_isClosed && ready == true && m_rtcpReportTimer == null)
{
// Send the initial RTCP sender report once the first RTP packet arrives.
SendReportTimerCallback(null);
}
}