this.readFlags = readFlags;
    }

    /**
     * Sets the number of bytes to read
     *
     * @param readLength
     *            the readLength to set
     */
    public void setReadLength(final int readLength) {
        this.readLength = readLength;
    }

    /**
     * Sets the file offset from which to start reading
     *
     * @param offset

            ASN1Util.readTagNumber(s, 0x1F);
        });
    }

    // --- readLength ---

    @Test
    void testReadLength_ShortForm() throws IOException {
        // Definite-length short form (length 10)
        InputStream s = new ByteArrayInputStream(new byte[] { 0x0A });
        int length = ASN1Util.readLength(s, 100, false);
        assertEquals(10, length);
    }

    @Test

    @Test
    @DisplayName("readLength should handle maximum length")
    void testReadLengthMaximum() {
        byte[] src = { (byte) 0x00, (byte) 0x01, (byte) 0xFF, (byte) 0xFF };
        int length = SessionServicePacket.readLength(src, 0);

        assertEquals(0x01FFFF, length);
    }

    @Test
    @DisplayName("readLength should handle zero length")
    void testReadLengthZero() {

        return ((src[srcIndex] & 0xFF) << 24) + ((src[srcIndex + 1] & 0xFF) << 16) + ((src[srcIndex + 2] & 0xFF) << 8)
                + (src[srcIndex + 3] & 0xFF);
    }

    static int readLength(final byte[] src, int srcIndex) {
        srcIndex++;
        return ((src[srcIndex++] & 0x01) << 16) + ((src[srcIndex++] & 0xFF) << 8) + (src[srcIndex++] & 0xFF);
    }

        final int ftag = in.read();
        final int tag = readTagNumber(in, ftag);
        if (tag != expectTag) {
            throw new IOException("Unexpected tag " + tag);
        }
        final int length = readLength(in, limit, false);
        final byte[] content = new byte[length];
        in.read(content);
        return content;
    }

    // shamelessly stolen from BC ASN1InputStream

            case SessionServicePacket.SESSION_KEEP_ALIVE:
                break;
            case SessionServicePacket.SESSION_MESSAGE:
                bip = SessionServicePacket.readLength(header, 0);
                break;
            case -1:
                if (tot > 0) {
                    return tot;
                }
                return -1;
            }
        }
    }

        return ((src[srcIndex] & 0xFF) << 24) + ((src[srcIndex + 1] & 0xFF) << 16) + ((src[srcIndex + 2] & 0xFF) << 8)
                + (src[srcIndex + 3] & 0xFF);
    }

    static int readLength(final byte[] src, int srcIndex) {
        srcIndex++;
        return ((src[srcIndex++] & 0x01) << 16) + ((src[srcIndex++] & 0xFF) << 8) + (src[srcIndex++] & 0xFF);
    }

        assertTrue(writeLength > 0);

        // Create new request to read
        NodeStatusRequest readRequest = new NodeStatusRequest(mockConfig, new Name(mockConfig));

        // Act - Read
        int readLength = readRequest.readWireFormat(buffer, 0);

        // Assert read
        assertEquals(0x1234, readRequest.nameTrnId);
        assertEquals(NameServicePacket.NBSTAT, readRequest.questionType);