private async void SendReport(object state)
{
try
{
foreach (var(senderSsrc, senderReport) in _senderReports)
{
if (!_receiverReports.TryGetValue(senderSsrc, out var receiverReport))
{
continue;
}
var sourceDescriptionPacket = new RtcpSourceDescriptionPacket
{
Chunks = new List <RtcpSourceDescriptionChunk>(1)
{
new RtcpSourceDescriptionChunk
{
SynchronizationSource = receiverReport.SynchronizationSource,
Items = new List <RtcpSourceDescriptionItem>(1)
{
new RtcpSourceDescriptionItem
{
Type = SourceDescriptionType.CName,
Text = Environment.MachineName
}
}
}
}
};
await _rtcpClient.SendAsync(senderReport.RemoteEndPoint, receiverReport, sourceDescriptionPacket);
}
_senderReports.Clear();
}
catch (Exception e)
{
Debug.WriteLine($"Exception occurred {e}", nameof(RtcpReceptionReportScheduler));
}
}
private static RtcpSourceDescriptionPacket ParseRtcpSourceDescriptionPacket(byte sourceCount, Span <byte> bytes, ref int idx)
{
var rtcpPacket = new RtcpSourceDescriptionPacket();
rtcpPacket.Chunks = new List <RtcpSourceDescriptionChunk>(sourceCount);
for (var i = 0; i < sourceCount; i++)
{
var chunk = new RtcpSourceDescriptionChunk();
chunk.SynchronizationSource = BinaryPrimitives.ReadUInt32BigEndian(bytes);
idx += 4;
chunk.Items = new List <RtcpSourceDescriptionItem>();
var type = (SourceDescriptionType)bytes[idx];
idx += 1;
while (type != SourceDescriptionType.End)
{
var item = new RtcpSourceDescriptionItem();
item.Type = type;
var textLen = bytes[idx];
idx += 1;
var textBytes = bytes.Slice(0, textLen).ToArray();
idx += textLen;
item.Text = Encoding.UTF8.GetString(textBytes);
chunk.Items.Add(item);
type = (SourceDescriptionType)bytes[idx];
idx += 1;
}
rtcpPacket.Chunks.Add(chunk);
}
return(rtcpPacket);
}