public void ReadResponse(byte[] datas, long offset, long size, out byte[] rcvData)
{
serializer.SetBuffer(datas, offset, size);
methodId = (ushort)((uint)serializer.ReadUShort() & 0x3FFF); //0x3F (0011 1111) sets left most 2 bits to 00
methodLength = serializer.ReadUShort();
transactionID = serializer.ReadBytes(16);
if (!Enum.IsDefined(typeof(STUNMethod), (STUNMethod)methodId) || methodLength != serializer.byteLength - serializer.bytePos)
{
serializer.SetStartPos();
isIndicateData = IsSTUNMessage = false;
serializer.ReverserBuffer((int)offset, 4);
ushort appSize = serializer.ReadUShort();
responseChannelNumber = serializer.ReadUShort();
rcvData = new byte[appSize];
Array.Copy(datas, 4, rcvData, 0, appSize);
return;
}
method = (STUNMethod)methodId;
isIndicateData = method == STUNMethod.DataIndication;
IsSTUNMessage = !isIndicateData;
ReadAttribute(out rcvData);
}