// Write context header
        SMBUtil.writeInt4(0, dst, dstIndex); // Next (offset to next context, 0 for last)
        dstIndex += 4;

        SMBUtil.writeInt2(16, dst, dstIndex); // NameOffset (from start of context)
        dstIndex += 2;

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

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

        // Write context header
        SMBUtil.writeInt4(0, buffer, offset); // Next (offset to next context, 0 for last)
        offset += 4;

        SMBUtil.writeInt2(16, buffer, offset); // NameOffset (from start of context)
        offset += 2;

        SMBUtil.writeInt2(4, buffer, offset); // NameLength
        offset += 2;

        SMBUtil.writeInt2(0, buffer, offset); // Reserved
        offset += 2;

        writeInt4(buffer, dataOffset + 16, leaseState);  // LeaseState
        writeInt4(buffer, dataOffset + 20, leaseFlags);  // LeaseFlags
        writeInt8(buffer, dataOffset + 24, leaseDuration);  // LeaseDuration
        
        if (isV2()) {
            System.arraycopy(parentLeaseKey.getKey(), 0, buffer, dataOffset + 32, 16);  // ParentLeaseKey
            writeInt2(buffer, dataOffset + 48, epoch);  // Epoch

        dst[dstIndex + CMD_OFFSET] = command;
        dst[dstIndex + FLAGS_OFFSET] = flags;
        writeInt2(flags2, dst, dstIndex + FLAGS_OFFSET + 1);
        dstIndex += TID_OFFSET;
        writeInt2(tid, dst, dstIndex);
        writeInt2(pid, dst, dstIndex + 2);
        writeInt2(uid, dst, dstIndex + 4);
        writeInt2(mid, dst, dstIndex + 6);
        return HEADER_LENGTH;
    }

    @Test
    void testInt2ReadWrite() {
        byte[] buffer = new byte[2];
        ServerMessageBlock.writeInt2(0x1234, buffer, 0);
        assertEquals(0x1234, ServerMessageBlock.readInt2(buffer, 0));
    }

    @Test
    void testInt4ReadWrite() {
        byte[] buffer = new byte[4];
        ServerMessageBlock.writeInt4(0x12345678, buffer, 0);
        assertEquals(0x12345678, ServerMessageBlock.readInt4(buffer, 0));
    }

        namelen_index = dstIndex;
        dstIndex += 2;
        writeInt4(flags0, dst, dstIndex);
        dstIndex += 4;
        writeInt4(rootDirectoryFid, dst, dstIndex);
        dstIndex += 4;
        writeInt4(desiredAccess, dst, dstIndex);
        dstIndex += 4;
        writeInt8(allocationSize, dst, dstIndex);
        dstIndex += 8;
        writeInt4(extFileAttributes, dst, dstIndex);
        dstIndex += 4;

     * @param dstIndex starting index
     * @return number of bytes written
     */
    public int encode(byte[] dst, int dstIndex) {
        SMBUtil.writeInt8(offset, dst, dstIndex);
        SMBUtil.writeInt4(token, dst, dstIndex + 8);
        SMBUtil.writeInt4(length, dst, dstIndex + 12);
        return 16;
    }

    /**
     * Decode from byte array
     *
     * @param buffer source buffer

        dstIndex += 2;
        SMBUtil.writeInt2(this.token != null ? this.token.length : 0, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt8(this.previousSessionId, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, offsetOffset);

        dstIndex += pad8(dstIndex);

        if (this.token != null) {

     * @see jcifs.Encodable#encode(byte[], int)
     */
    @Override
    public int encode(final byte[] dst, int dstIndex) {
        final int start = dstIndex;
        SMBUtil.writeInt8(this.timeout, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt4(this.nameBytes.length, dst, dstIndex);
        dstIndex += 4;

        dst[dstIndex] = (byte) (this.timeoutSpecified ? 0x1 : 0x0);
        dstIndex++;

            System.arraycopy(SMBUtil.SMB2_HEADER, 0, buffer, 0, 4);
            // Set up async message fields
            SMBUtil.writeInt4(ServerMessageBlock2.SMB2_FLAGS_ASYNC_COMMAND, buffer, 16); // flags with async
            SMBUtil.writeInt8(789L, buffer, 32); // async ID
            SMBUtil.writeInt8(456L, buffer, 40); // session ID
            return buffer;
        }

        private byte[] createErrorResponseMessage() {