* @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        // ensure file is open
        if (this.handle == null || !this.handle.isValid()) {
            // one extra acquire to keep this open till the stream is released
            this.handle =
                    this.file.openUnshared(this.openFlags, this.access, this.sharing, SmbConstants.ATTR_NORMAL, this.options).acquire();

        assertEquals(0x0001, decodedHeader.getFlags());
        assertEquals(testSessionId, decodedHeader.getSessionId());
    }

    // Duplicate testFlags method removed - keeping the first one

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 64, 1024, 4096, 65536 })
    @DisplayName("Should handle various message sizes")
    void testVariousMessageSizes(int messageSize) {
        // When

    void testHexdump() {
        // Capture output
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PrintStream ps = new PrintStream(baos);

        // Test with 16 bytes (one complete line)
        byte[] data1 = createTestData(16);
        Hexdump.hexdump(ps, data1, 0, 16);
        String output1 = baos.toString();

        assertNotNull(output1);

import jcifs.smb.SmbException;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbFileInputStream;

/**
 * This servlet may be used to "browse" the entire hierarchy of resources
 * on an SMB network like one might with Network Neighborhood or Windows
 * Explorer. The users credentials with be negotiated using NTLM SSP if
 * the client is Microsoft Internet Explorer.
 *
 * @deprecated Unsupported
 */
@Deprecated
/**

    class SamrSamArrayTests {

        @Test
        @DisplayName("Should encode array with entries")
        void testEncode() throws NdrException {
            // Given: SAM array with one entry
            samr.SamrSamArray array = new samr.SamrSamArray();
            array.count = 1;
            samr.SamrSamEntry entry = new samr.SamrSamEntry();
            entry.name = new rpc.unicode_string();

                    this.sidCache.put(resolved[si], resolved[si]);
                }
            }
        }
    }

    /**
     * Resolve an array of SIDs using a cache and at most one MSRPC request.
     * <p>
     * This method will attempt
     * to resolve SIDs using a cache and cache the results of any SIDs that
     * required resolving with the authority. SID cache entries are currently not

        if (this.disableMic) {
            return;
        }

        // No MIC verification if not present and not required
        // or if the chosen mechanism is our preferred one
        if ((mechanismListMIC == null || !this.mechContext.supportsIntegrity()) && this.requireMic
                && !this.mechContext.isPreferredMech(this.selectedMech)) {

          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,

          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,

     * The user code is used to uniquely identify users across sessions and requests.
     * It checks multiple sources in order: request attribute, request parameter, cookie, user bean, or generates a new one.
     *
     * @return the user code string, or null if no valid session exists
     */
    public String getUserCode() {
        return LaRequestUtil.getOptionalRequest().map(request -> {