private void sendPacket(NetcodePacketHeader packetHeader, byte[] packetData, int packetDataLen, byte[] key)
{
// assign a sequence number to this packet
packetHeader.SequenceNumber = this.nextPacketSequence++;
// encrypt packet data
byte[] encryptedPacketBuffer = BufferPool.GetBuffer(2048);
int encryptedBytes = PacketIO.EncryptPacketData(packetHeader, connectToken.ProtocolID, packetData, packetDataLen, key, encryptedPacketBuffer);
int packetLen = 0;
// write packet to byte array
var packetBuffer = BufferPool.GetBuffer(2048);
using (var packetWriter = ByteArrayReaderWriter.Get(packetBuffer))
{
packetHeader.Write(packetWriter);
packetWriter.WriteBuffer(encryptedPacketBuffer, encryptedBytes);
packetLen = (int)packetWriter.WritePosition;
}
// send packet
try {
socket.SendTo(packetBuffer, packetLen, currentServerEndpoint);
}
catch { }
BufferPool.ReturnBuffer(packetBuffer);
BufferPool.ReturnBuffer(encryptedPacketBuffer);
}
// encrypts a packet and sends it to the endpoint
private void sendPacketToClient(NetcodePacketHeader packetHeader, byte[] packetData, int packetDataLen, EndPoint endpoint, byte[] key)
{
// assign a sequence number to this packet
packetHeader.SequenceNumber = this.nextSequenceNumber++;
// encrypt packet data
byte[] encryptedPacketBuffer = BufferPool.GetBuffer(2048);
int encryptedBytes = PacketIO.EncryptPacketData(packetHeader, protocolID, packetData, packetDataLen, key, encryptedPacketBuffer);
int packetLen = 0;
// write packet to byte array
var packetBuffer = BufferPool.GetBuffer(2048);
using (var packetWriter = ByteArrayReaderWriter.Get(packetBuffer))
{
packetHeader.Write(packetWriter);
packetWriter.WriteBuffer(encryptedPacketBuffer, encryptedBytes);
packetLen = (int)packetWriter.WritePosition;
}
// send packet
listenSocket.SendTo(packetBuffer, packetLen, SocketFlags.None, endpoint);
BufferPool.ReturnBuffer(packetBuffer);
BufferPool.ReturnBuffer(encryptedPacketBuffer);
}