public STUNAddress ReadMappedAddress(NetworkPacket packet)
{
STUNAddress sa = new STUNAddress();
ushort attrLength = packet.ReadUShort();
byte empty = packet.ReadByte();
sa.family = packet.ReadByte();
sa.port = packet.ReadUShort();
switch (sa.family)
{
case 1:
sa.address = new byte[4];
break;
case 2:
sa.address = new byte[16];
break;
}
for (int i = 0; i < sa.address.Length; i++)
{
sa.address[i] = packet.ReadByte();
}
return(sa);
}
public STUNAddress ReadXorMappedAddress(NetworkPacket packet)
{
STUNAddress sa = new STUNAddress();
ushort attrLength = packet.ReadUShort();
ushort xorFlag16 = (ushort)(magicCookie >> 16);
byte empty = packet.ReadByte();
sa.family = packet.ReadByte();
sa.port = (ushort)(packet.ReadUShort() ^ xorFlag16);
switch (sa.family)
{
case 1:
byte[] xorFlagBytes = new byte[4];
Array.Copy(packet.ByteBuffer, 4, xorFlagBytes, 0, 4);
Array.Reverse(xorFlagBytes);
uint xorFlag32 = BitConverter.ToUInt32(xorFlagBytes, 0);
sa.address = new byte[4];
uint address = packet.ReadUInt() ^ xorFlag32;
sa.address[0] = (byte)((address & 0xff000000) >> 24);
sa.address[1] = (byte)((address & 0x00ff0000) >> 16);
sa.address[2] = (byte)((address & 0x0000ff00) >> 8);
sa.address[3] = (byte)(address & 0x000000ff);
break;
case 2:
sa.address = new byte[16];
byte[] xorFlags = new byte[16];
Array.Copy(transactionID, 0, xorFlags, xorFlags.Length, transactionID.Length);
for (int i = 0; i < sa.address.Length; i++)
{
sa.address[i] = (byte)(packet.ReadByte() ^ xorFlags[i]);
}
break;
}
return(sa);
}
