block.headerStart = 0;

        byte[] buf = new byte[64];
        buf[0] = 4; // wordCount
        buf[1] = 0x42; // andxCommand
        // andxOffset = 0 triggers workaround -> treat as no andx
        ServerMessageBlock.writeInt2(0, buf, 3);
        ServerMessageBlock.writeInt2(10, buf, 9); // byteCount

        int n = block.readAndXWireFormat(buf, 0);

        assertNotNull(s2);
        assertEquals(1, transport.getNumSessions(), "Should reuse existing session");
        s2.close();
    }

    @Test
    @DisplayName("DFS referrals: invalid double-slash prefix triggers exception")
    void dfsReferrals_invalidPath() {
        CIFSException ex = assertThrows(CIFSException.class, () -> transport.getDfsReferrals(ctx, "\\\\server\\share", null, null, 1));

                svc = this.service;
                if (svc == null) {
                    // there still is some kind of race condition, where?
                    // this used to trigger "invalid operation..."
                    throw new SmbException("Service is null in state " + this.connectionState.get());
                }
                checkRequest(transport, req, svc);

            }

            SmbResourceLocator locator = mock(SmbResourceLocator.class);
            when(parent.getLocator()).thenReturn(locator);
            // Host is empty -> triggers master browser path
            URL anyUrlWithEmptyHost = new URL("file:/");
            when(locator.getURL()).thenReturn(anyUrlWithEmptyHost);

        assertSame(session, session.unwrap(SmbSessionInternal.class));
        assertSame(session, session.unwrap(jcifs.SmbSession.class));

        // Edge: force incompatible class via raw type to trigger ClassCastException
        assertThrows(ClassCastException.class, () -> session.unwrap((Class) String.class));
    }

    @Test
    @DisplayName("toString contains key identifiers")
    void testToString() {

        networkExplorer = new NetworkExplorer() {
            @Override
            public void init(ServletConfig config) throws ServletException {
                // Read the parameters to trigger verification
                config.getInitParameter("jcifs.smb.client.domain");
                config.getInitParameter("jcifs.http.enableBasic");

                // Set required fields
                try {

        byte[] data = new byte[] { 1, 2, 3, 4 };
        InputStream in = new ByteArrayInputStream(concat(messageHeader(4), data));
        SocketInputStream sis = new SocketInputStream(in);

        // Read one byte to trigger message header processing
        assertEquals(1, sis.read());

        // 3 bytes should remain available in current message
        assertEquals(3, sis.available());

        // Read another byte

            assertTrue(rateLimiter.checkAttempt("user2", "192.168.1." + i));
        }
    }

    @Test
    public void testGlobalRateLimit() throws Exception {
        // Make many attempts to trigger global rate limit
        for (int i = 1; i <= 20; i++) {
            assertTrue(rateLimiter.checkAttempt("user" + i, "192.168.1." + i), "Attempt " + i + " should be allowed");
        }

				"application/spirits-event+xml",
				"application/srgs",
				"application/srgs+xml",
				"application/ssml+xml",
				"application/timestamp-query",
				"application/timestamp-reply",
				"application/tve-trigger",
				"application/ulpfec",
				"application/vemmi",
				"application/vividence.scriptfile",
				"application/vnd.3gpp.bsf+xml",
				"application/vnd.3gpp.pic-bw-large",
				"application/vnd.3gpp.pic-bw-small",

        testBlock.headerStart = 0;
        buffer[0] = 4; // wordCount at position 0
        buffer[1] = (byte) 0x42; // andxCommand
        SMBUtil.writeInt2(0, buffer, 3); // andxOffset = 0 (triggers Snap workaround)
        SMBUtil.writeInt2(20, buffer, 9); // byteCount

        int length = testBlock.readAndXWireFormat(buffer, 0);

        assertTrue(length > 0);