public uint ReadUInt(NetworkPacket packet)
{
ushort attrLength = packet.ReadUShort();
uint value = packet.ReadUInt();
return(value);
}
public override void ReadRequest(NetworkPacket packet)
{
segmentLen = 0;
startPos = packet.ReadUInt();
//first stream segment
if (startPos == 0)
{
uint totalBytes = packet.ReadUInt();
command = packet.ReadString();
byteData = new byte[totalBytes];
segmentLen = packet.ReadUInt();
byte[] bytes = packet.ReadBytes((int)segmentLen);
SetBuffer(bytes, 0);
return;
}
//subsequent stream segments
segmentLen = packet.ReadUInt();
byteData = packet.ReadBytes((int)segmentLen);
}
public string ReadErrorCode(NetworkPacket packet)
{
ushort attrLength = packet.ReadUShort();
uint bits = packet.ReadUInt();
uint code = bits & 0xFF;
uint codeClass = (bits & 0x700) >> 8;
string phrase = packet.ReadString(attrLength - 4);
while ((attrLength++) % 4 != 0)
{
packet.ReadByte();
}
return("Error (" + codeClass + code.ToString("D2") + "): " + phrase);
}
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);
}
