private void SendRTPPacket(string sourceSocket, string destinationSocket)
{
try
{
//logger.Debug("Attempting to send RTP packet from " + sourceSocket + " to " + destinationSocket + ".");
Log("Attempting to send RTP packet from " + sourceSocket + " to " + destinationSocket + ".");
IPEndPoint sourceEP = IPSocket.GetIPEndPoint(sourceSocket);
IPEndPoint destEP = IPSocket.GetIPEndPoint(destinationSocket);
RTPPacket rtpPacket = new RTPPacket(80);
rtpPacket.Header.SequenceNumber = (UInt16)6500;
rtpPacket.Header.Timestamp = 100000;
UDPPacket udpPacket = new UDPPacket(sourceEP.Port, destEP.Port, rtpPacket.GetBytes());
IPv4Header ipHeader = new IPv4Header(ProtocolType.Udp, Crypto.GetRandomInt(6), sourceEP.Address, destEP.Address);
IPv4Packet ipPacket = new IPv4Packet(ipHeader, udpPacket.GetBytes());
byte[] data = ipPacket.GetBytes();
Socket rawSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
rawSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1);
rawSocket.SendTo(data, destEP);
}
catch (Exception excp)
{
logger.Error("Exception SendRTPPacket. " + excp.Message);
}
}
public void Send(byte[] buffer)
{
try
{
Peer.LastTimestamp = (Peer.LastTimestamp == 0) ? RTSPSession.DateTimeToNptTimestamp32(DateTime.Now) : Peer.LastTimestamp + TIMESTAMP_SPACING;
for (int index = 0; index *RTP_MAX_PAYLOAD < buffer.Length; index++)
{
int offset = (index == 0) ? 0 : (index * RTP_MAX_PAYLOAD);
int payloadLength = (offset + RTP_MAX_PAYLOAD < buffer.Length) ? RTP_MAX_PAYLOAD : buffer.Length - offset;
byte[] vp8HeaderBytes = (index == 0) ? new byte[] { 0x10 } : new byte[] { 0x00 };
RTPPacket rtpPacket = new RTPPacket(payloadLength + SRTP_AUTH_KEY_LENGTH + vp8HeaderBytes.Length);
rtpPacket.Header.SyncSource = Peer.SSRC;
rtpPacket.Header.SequenceNumber = Peer.SequenceNumber++;
rtpPacket.Header.Timestamp = Peer.LastTimestamp;
rtpPacket.Header.MarkerBit = ((offset + payloadLength) >= buffer.Length) ? 1 : 0; // Set marker bit for the last packet in the frame.
rtpPacket.Header.PayloadType = PAYLOAD_TYPE_ID;
Buffer.BlockCopy(vp8HeaderBytes, 0, rtpPacket.Payload, 0, vp8HeaderBytes.Length);
Buffer.BlockCopy(buffer, offset, rtpPacket.Payload, vp8HeaderBytes.Length, payloadLength);
var rtpBuffer = rtpPacket.GetBytes();
int rtperr = SrtpContext.ProtectRTP(rtpBuffer, rtpBuffer.Length - SRTP_AUTH_KEY_LENGTH);
if (rtperr != 0)
{
logger.Warn("SRTP packet protection failed, result " + rtperr + ".");
}
else
{
var connectedIceCandidate = Peer.LocalIceCandidates.Where(y => y.RemoteRtpEndPoint != null).First();
connectedIceCandidate.LocalRtpSocket.SendTo(rtpBuffer, connectedIceCandidate.RemoteRtpEndPoint);
}
}
}
catch (Exception sendExcp)
{
// logger.Error("SendRTP exception sending to " + client.SocketAddress + ". " + sendExcp.Message);
}
}
public void SendRTPPacket(string sourceSocket, string destinationSocket)
{
try
{
//logger.Debug("Attempting to send RTP packet from " + sourceSocket + " to " + destinationSocket + ".");
FireLogEvent("Attempting to send RTP packet from " + sourceSocket + " to " + destinationSocket + ".");
IPEndPoint sourceEP = IPSocket.GetIPEndPoint(sourceSocket);
IPEndPoint destEP = IPSocket.GetIPEndPoint(destinationSocket);
RTPPacket rtpPacket = new RTPPacket(80);
rtpPacket.Header.SequenceNumber = (UInt16)6500;
rtpPacket.Header.Timestamp = 100000;
UDPPacket udpPacket = new UDPPacket(sourceEP.Port, destEP.Port, rtpPacket.GetBytes());
IPv4Header ipHeader = new IPv4Header(ProtocolType.Udp, Crypto.GetRandomInt(6), sourceEP.Address, destEP.Address);
IPv4Packet ipPacket = new IPv4Packet(ipHeader, udpPacket.GetBytes());
byte[] data = ipPacket.GetBytes();
Socket rawSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
rawSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1);
rawSocket.SendTo(data, destEP);
}
catch (Exception excp)
{
logger.Error("Exception SendRTPPacket. " + excp.Message);
}
}
