}
        }
        if (readULong(material, 8) != 3) {
            throw new IOException("Not a Type 3 message.");
        }
        byte[] lmResponse = readSecurityBuffer(material, 12);
        int lmResponseOffset = readULong(material, 16);
        byte[] ntResponse = readSecurityBuffer(material, 20);
        int ntResponseOffset = readULong(material, 24);

            if (material[i] != NTLMSSP_SIGNATURE[i]) {
                throw new IOException("Not an NTLMSSP message.");
            }
        }
        if (readULong(material, 8) != 2) {
            throw new IOException("Not a Type 2 message.");
        }
        int flags = readULong(material, 20);
        setFlags(flags);
        String target = null;
        byte[] bytes = readSecurityBuffer(material, 12);

                throw new IOException("Not an NTLMSSP message.");
            }
        }
        pos += 8;

        if ( readULong(material, pos) != NTLMSSP_TYPE1 ) {
            throw new IOException("Not a Type 1 message.");
        }
        pos += 4;

        int flags = readULong(material, pos);
        setFlags(flags);
        pos += 4;

        if ( ( flags & NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED ) != 0 ) {

        setNTResponse(ntResponseBytes);
        int ntResponseOffset = readULong(material, pos + 4);
        pos += 8;

        byte[] domainBytes = readSecurityBuffer(material, pos);
        int domainOffset = readULong(material, pos + 4);
        pos += 8;

        byte[] userBytes = readSecurityBuffer(material, pos);
        int userOffset = readULong(material, pos + 4);
        pos += 8;

     */
    public void setFlag(int flag, boolean value) {
        setFlags(value ? (getFlags() | flag) :
                (getFlags() & (0xffffffff ^ flag)));
    }

    static int readULong(byte[] src, int index) {
        return (src[index] & 0xff) |
                ((src[index + 1] & 0xff) << 8) |
                ((src[index + 2] & 0xff) << 16) |
                ((src[index + 3] & 0xff) << 24);
    }

     */
    public void setFlag ( int flag, boolean value ) {
        setFlags(value ? ( getFlags() | flag ) : ( getFlags() & ( 0xffffffff ^ flag ) ));
    }


    static int readULong ( byte[] src, int index ) {
        return ( src[ index ] & 0xff ) | ( ( src[ index + 1 ] & 0xff ) << 8 ) | ( ( src[ index + 2 ] & 0xff ) << 16 )
                | ( ( src[ index + 3 ] & 0xff ) << 24 );
    }

            if (material[i] != NTLMSSP_SIGNATURE[i]) {
                throw new IOException("Not an NTLMSSP message.");
            }
        }
        if (readULong(material, 8) != 1) {
            throw new IOException("Not a Type 1 message.");
        }
        int flags = readULong(material, 12);
        String suppliedDomain = null;
        if ((flags & NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED) != 0) {

            }
        }
        pos += 8;

        if ( readULong(input, pos) != NTLMSSP_TYPE2 ) {
            throw new IOException("Not a Type 2 message.");
        }
        pos += 4;

        int flags = readULong(input, pos + 8);
        setFlags(flags);

        byte[] targetName = readSecurityBuffer(input, pos);
        int targetNameOff = readULong(input, pos + 4);
        if ( targetName.length != 0 ) {

    metadata: ByteString?,
  ) {
    val source = file.source().buffer()
    assertThat(source.readByteString(prefix.size.toLong())).isEqualTo(prefix)
    assertThat(source.readLong()).isEqualTo(upstreamSize)
    assertThat(source.readLong()).isEqualTo(metadataSize.toLong())
    if (upstream != null) {
      assertThat(source.readUtf8(upstreamSize)).isEqualTo(upstream)
    }
    if (metadata != null) {

   * Reads a {@code long} as specified by {@link DataInputStream#readLong()}, except using
   * little-endian byte order.
   *
   * @return the next eight bytes of the input stream, interpreted as a {@code long} in
   *     little-endian byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public long readLong() throws IOException {
    byte b1 = readAndCheckByte();