}
        if (length < 0)
        {
            throw new EOFException("EOF found when length expected");
        }
        if (0xFF == length)
        {
            throw new IOException("invalid long form definite-length 0xFF");
        }

        int octetsCount = length & 0x7F, octetsPos = 0;

        length = 0;
        do
        {
            int octet = s.read();
            if (octet < 0)