byte[] buffer = new byte[10];
            int bufferIndex = 0;
            SMBUtil.writeInt2(4, buffer, bufferIndex); // Write structure size = 4
            SMBUtil.writeInt2(0, buffer, bufferIndex + 2); // Reserved field

            // When
            int bytesRead = response.readBytesWireFormat(buffer, bufferIndex);

            // Then
            assertEquals(4, bytesRead);
        }

        @Test

        SMBUtil.writeInt2(this.dialects.length, dst, dstIndex + 2);
        dstIndex += 4;

        SMBUtil.writeInt2(this.securityMode, dst, dstIndex);
        SMBUtil.writeInt2(0, dst, dstIndex + 2); // Reserved
        dstIndex += 4;

        SMBUtil.writeInt4(this.capabilities, dst, dstIndex);
        dstIndex += 4;

        System.arraycopy(this.clientGuid, 0, dst, dstIndex, 16);
        dstIndex += 16;

    public static final String NAME = "DHnQ";  // Durable Handle Request
    
    private static final int STRUCTURE_SIZE = 16;
    private long reserved;  // Must be zero
    
    public DurableHandleRequest() {
        super(NAME);
        this.reserved = 0;
    }
    
    @Override
    public void encode(byte[] buffer, int offset) {
        // Context header
        int nameLen = getName().length();

        }

        @Test
        @DisplayName("Should not modify reserved field bytes")
        void testReservedFieldNotModified() {
            lock = new Smb2Lock(999L, 888L, 0xFF);

            // Fill buffer with non-zero values
            Arrays.fill(buffer, (byte) 0xFF);

            lock.encode(buffer, 0);

            // Reserved field bytes are not modified by the encode method

        final int start = dstIndex;
        SMBUtil.writeInt2(24, dst, dstIndex);
        SMBUtil.writeInt2(this.closeFlags, dst, dstIndex + 2);
        dstIndex += 4;
        dstIndex += 4; // Reserved
        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;

        if (log.isDebugEnabled()) {

        dstIndex += 2;

        SMBUtil.writeInt2(4, dst, dstIndex); // NameLength
        dstIndex += 2;

        SMBUtil.writeInt2(0, dst, dstIndex); // Reserved
        dstIndex += 2;

        SMBUtil.writeInt2(24, dst, dstIndex); // DataOffset (from start of context)
        dstIndex += 2;

        SMBUtil.writeInt4(STRUCTURE_SIZE, dst, dstIndex); // DataLength

        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;

        SMBUtil.writeInt4(this.completionFilter, dst, dstIndex);
        dstIndex += 4;
        dstIndex += 4; // Reserved
        return dstIndex - start;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#readBytesWireFormat(byte[], int)
     */
    @Override

            "The system cannot find the file specified.", "Bad password.", "The system cannot find the path specified.", "reserved",
            "The client does not have the necessary access rights to perform the requested function.", "Access is denied.",
            "The TID specified was invalid.", "The handle is invalid.", "The network name cannot be found.",

            "The system cannot find the file specified.", "Bad password.", "The system cannot find the path specified.", "reserved",
            "The client does not have the necessary access rights to perform the requested function.", "Access is denied.",
            "The TID specified was invalid.", "The handle is invalid.", "The network name cannot be found.",

            assertEquals(targetOffset, SMBUtil.readInt8(buffer, startIndex + 8));

            // Verify length
            assertEquals(length, SMBUtil.readInt4(buffer, startIndex + 16));

            // Verify reserved bytes are zeros
            for (int i = 0; i < RESERVED_BYTES; i++) {
                assertEquals(0, buffer[startIndex + 20 + i]);
            }
        }

        @Test