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 byte[] GetBytes()
{
if (ICMP != null)
{
Protocol = 1; PacketData = ICMP.GetBytes();
}
if (TCP != null)
{
Protocol = 6; PacketData = TCP.GetBytes(ref SourceAddress, ref DestinationAddress);
}
if (UDP != null)
{
Protocol = 17; PacketData = UDP.GetBytes(ref SourceAddress, ref DestinationAddress);
}
if (PacketData == null)
{
PacketData = new byte[0];
}
if (Version == 0)
{
Version = 4;
}
if (HeaderLength == 0)
{
HeaderLength = 20;
}
TotalLength = (ushort)(HeaderLength + PacketData.Length);
byte[] Packet = new byte[TotalLength];
if (TimeToLive == 0)
{
TimeToLive = 128;
}
Packet[0] = (byte)(((Version & 0x0F) << 4) | ((HeaderLength / 4) & 0x0F));
Packet[1] = TypeOfService;
System.Buffer.BlockCopy(System.BitConverter.GetBytes(System.Net.IPAddress.HostToNetworkOrder((short)TotalLength)), 0, Packet, 2, 2);
System.Buffer.BlockCopy(System.BitConverter.GetBytes(System.Net.IPAddress.HostToNetworkOrder((short)Identification)), 0, Packet, 4, 2);
System.Buffer.BlockCopy(System.BitConverter.GetBytes(System.Net.IPAddress.HostToNetworkOrder((short)((FragmentOffset & 0x1F) | ((Flags & 0x03) << 13)))), 0, Packet, 6, 2);
Packet[8] = TimeToLive;
Packet[9] = Protocol;
System.Buffer.BlockCopy(System.BitConverter.GetBytes((short)0), 0, Packet, 10, 2);
System.Buffer.BlockCopy(SourceAddress.GetAddressBytes(), 0, Packet, 12, 4);
System.Buffer.BlockCopy(DestinationAddress.GetAddressBytes(), 0, Packet, 16, 4);
System.Buffer.BlockCopy(PacketData, 0, Packet, HeaderLength, PacketData.Length);
HeaderChecksum = GetChecksum(ref Packet, 0, HeaderLength - 1);
System.Buffer.BlockCopy(System.BitConverter.GetBytes(System.Net.IPAddress.HostToNetworkOrder((short)HeaderChecksum)), 0, Packet, 10, 2);
return(Packet);
}
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);
}
}
