public static void SendPacket(UdpClient client, IPEndPoint endPoint,
ChunkConstruct packet)
{
if (packet.DataSize == 0)
{
return;
}
Debug.Assert((packet.Token & ~TokenHelper.TokenMask) == 0, "token out of range");
var buffer = new byte[MaxPacketSize];
var compressedSize = -1;
if (!packet.Flags.HasFlag(PacketFlags.Control))
{
compressedSize = Huffman.Compress(packet.Data, 0, packet.DataSize,
buffer, PacketHeaderSize, MaxPayload);
}
int finalSize;
if (compressedSize > 0 && compressedSize < packet.DataSize)
{
finalSize = compressedSize;
packet.Flags |= PacketFlags.Compression;
}
else
{
finalSize = packet.DataSize;
Buffer.BlockCopy(packet.Data, 0, buffer, PacketHeaderSize, packet.DataSize);
packet.Flags &= ~PacketFlags.Compression;
}
finalSize += PacketHeaderSize;
buffer[0] = (byte)((((int)packet.Flags << 2) & 0xfc) | ((packet.Ack >> 8) & 0x03)); // flags and ack
buffer[1] = (byte)((packet.Ack) & 0xff);
buffer[2] = (byte)((packet.NumChunks) & 0xff);
buffer[3] = (byte)((packet.Token >> 24) & 0xff);
buffer[4] = (byte)((packet.Token >> 16) & 0xff);
buffer[5] = (byte)((packet.Token >> 8) & 0xff);
buffer[6] = (byte)((packet.Token) & 0xff);
client.Send(buffer, finalSize, endPoint);
}
public static void SendPacket(UdpClient udpClient, IPEndPoint endPoint,
NetworkChunkConstruct packet)
{
var buffer = new byte[MAX_PACKET_SIZE];
var headerSize = PACKET_HEADER_SIZE_WITHOUT_TOKEN;
var compressedSize = -1;
if (packet.Flags.HasFlag(PacketFlags.TOKEN))
{
headerSize = PACKET_HEADER_SIZE;
packet.Token.ToByteArray(buffer, 3);
}
if (!packet.Flags.HasFlag(PacketFlags.CONTROL))
{
compressedSize = _huffman.Compress(packet.Data, 0, packet.DataSize,
buffer, headerSize, buffer.Length - headerSize);
}
//compressedSize = _huffman.Compress(packet.Data, 0, packet.DataSize,
// buffer, PACKET_HEADER_SIZE, buffer.Length - PACKET_HEADER_SIZE);
int finalSize;
if (compressedSize > 0 && compressedSize < packet.DataSize)
{
finalSize = compressedSize;
packet.Flags |= PacketFlags.COMPRESSION;
}
else
{
finalSize = packet.DataSize;
Buffer.BlockCopy(packet.Data, 0, buffer, headerSize, packet.DataSize);
packet.Flags &= ~PacketFlags.COMPRESSION;
}
finalSize += headerSize;
buffer[0] = (byte)((((int)packet.Flags << 2) & 0xfc) | ((packet.Ack >> 8) & 0x3));
buffer[1] = (byte)(packet.Ack & 0xff);
buffer[2] = (byte)packet.NumChunks;
udpClient.Send(buffer, finalSize, endPoint);
}
