return new RdmaTransport(context, address, provider);
            } catch (IOException e) {
                log.warn("Failed to create RDMA transport, falling back to TCP", e);
            }
        }
    }
    
    // Fall back to TCP
    return new SmbTransport(context, address.getAddress(), address.getPort());
}

private RdmaProvider selectRdmaProvider() {
    // Try providers in order of preference

labels.logout_button=Logout
labels.profile=Change Password
labels.administration=Administration
labels.profile_button=Settings
labels.profile.title=Settings
labels.profile.update=Update
labels.profile.back=Back
labels.profile.placeholder_old_password=Current Password
labels.profile.placeholder_new_password=New Password
labels.profile.placeholder_confirm_new_password=Confirm New Password
labels.top.search=Search

    protected ResourceUtil() {
        // nothing
    }

    /**
     * Gets the HTTP URL for the OpenSearch (Fesen) server.
     * First checks for a system-configured search engine address,
     * then falls back to the URL configured in FessConfig.
     *
     * @return the HTTP URL for the OpenSearch server
     */
    public static String getFesenHttpUrl() {
        final String url = SystemUtil.getSearchEngineHttpAddress();

                }
            }
        } catch (Exception e) {
            log.debug("Cached directory listing failed, falling back to direct query", e);
        }
        
        // Fall back to direct server query
        return directory.performDirectEnumeration();
    }
}
```

## 10. Monitoring and Metrics

### 10.1 Directory Cache Statistics

            searchPaging(data, form);
        });
    }

    /**
     * Go back to the list page.
     * @param form The search form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse back(final SearchForm form) {
        saveToken();
        return asHtml(path_AdminCrawlinginfo_AdminCrawlinginfoJsp).renderWith(data -> {

labels.logout_button=Logout
labels.profile=Change Password
labels.administration=Administration
labels.profile_button=Settings
labels.profile.title=Settings
labels.profile.update=Update
labels.profile.back=Back
labels.profile.placeholder_old_password=Current Password
labels.profile.placeholder_new_password=New Password
labels.profile.placeholder_confirm_new_password=Confirm New Password
labels.top.search=Search

            auth.setRealm("REALM.TEST");
            assertEquals("REALM.TEST", auth.getUserDomain());
        }

        @Test
        @DisplayName("getUserDomain: falls back to super domain when no realm/subject")
        void getUserDomain_fallbackToSuper() {
            Kerb5Authenticator auth = new Kerb5Authenticator(null, "DOM", "u", "p");

    }

    @Test
    void testOpenConnection_NullSystemProperty_UsesDefaultHandlers() throws Exception {
        // This test verifies that when the system property is null, the handler
        // falls back to using default handlers without throwing NullPointerException.
        System.clearProperty("java.protocol.handler.pkgs");
        setupMockProtocolHandlers();
        URL url = new URL("http://example.com/resource");

        assertTrue(ctx.isEstablished());

        // When gssContext is null, isEstablished returns false
        setPrivateField(ctx, "gssContext", null);
        assertFalse(ctx.isEstablished());
        // Put it back for subsequent tests
        setPrivateField(ctx, "gssContext", gssContext);
    }

    @Test
    @DisplayName("supportsIntegrity always true")
    void supportsIntegrity_alwaysTrue() {

            throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
        });
        saveToken();
        if (form.crudMode.intValue() == CrudMode.EDIT) {
            // back
            form.crudMode = CrudMode.DETAILS;
            return asDetailsHtml();
        }
        form.crudMode = CrudMode.EDIT;
        return asEditHtml();
    }