public void ExtendedBinaryReaderTest()
{
var testBytes = new byte[]
{
0x15, 0x00, 0x00, 0x00, // Size
0x02, 0x00, 0x00, 0x00, // Id
0x03, 0x00, 0x00, 0x00, // Type
0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x00,
0x00,
};
using (var ms = new MemoryStream(testBytes))
{
using (var reader = new BinaryReaderExt(ms))
{
var sizeTestValue = reader.ReadInt32LittleEndian();
Assert.Equal(21, sizeTestValue);
var idTestValue = reader.ReadInt32LittleEndian();
Assert.Equal(2, idTestValue);
var typeTestValue = reader.ReadInt32LittleEndian();
Assert.Equal(3, typeTestValue);
var payloadTestValue = reader.ReadAscii();
Assert.Equal("Hello World", payloadTestValue);
}
}
}
public RemoteConPacket(byte[] packetBytes, bool useUtf8 = false)
{
if (useUtf8)
{
_packetEncoding = Encoding.UTF8;
}
using (var ms = new MemoryStream(packetBytes))
{
using (var reader = new BinaryReaderExt(ms))
{
Size = reader.ReadInt32LittleEndian();
// The size field (4-Bytes Little Endian Int) is, according to specification, not included.
if (Size + 4 != packetBytes.Length)
{
throw new LengthMismatchException("packet length mismatch");
}
Id = reader.ReadInt32LittleEndian();
var packetType = reader.ReadInt32LittleEndian();
if (!Enum.IsDefined(typeof(PacketType), packetType))
{
throw new InvalidPacketTypeException("Invalid packet type");
}
Type = (PacketType)Enum.ToObject(typeof(PacketType), packetType);
if (!useUtf8)
{
Payload = reader.ReadAscii();
// Get payload length by subtracting 9 bytes (ID 4-Bytes, Type 4-Bytes, Null-terminator 1-Byte)
if (Encoding.ASCII.GetByteCount(Payload) > Size - 9)
{
throw new LengthMismatchException("Payload length mismatch");
}
}
else
{
Payload = Encoding.UTF8.GetString(reader.ReadBytes(Size - 10));
reader.ReadByte();
}
var nullTerminator = reader.ReadByte();
if (nullTerminator != 0x00)
{
throw new NullTerminatorMissingException("Missing last null-terminator");
}
if (reader.BaseStream.Position != reader.BaseStream.Length)
{
throw new Exception("More data to read");
}
}
}
}
