return null;
                }
                final int before = this.connectionState.getAndSet(1);
                if (before == 1) {
                    // concurrent connection attempt
                    if (waitForState(transport) == 2) {
                        // finished connecting
                        return null;
                    }
                    // failure to connect

                }
            }
        }
    }

    /**
     * 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

    class HandleCreationTests {

        @Test
        @DisplayName("Should create DcerpcPipeHandle for ncacn_np protocol")
        void testGetHandleNcacnNpProtocol() {
            // When/Then: Should attempt to create DcerpcPipeHandle (may fail due to SMB URL creation)
            // This tests the protocol recognition logic, actual creation may fail due to missing SMB support

        @Override
        public void onRegistrationExpired(WitnessRegistration registration) {
            log.warn("Witness registration expired: {}", registration.getRegistrationId());
            // Could attempt re-registration here
        }
    }

    /**
     * Handle a witness event
     *
     * @param notification the witness notification
     */

        // Read the three data bytes
        assertEquals(1, sis.read());
        assertEquals(2, sis.read());
        assertEquals(3, sis.read());

        // After consuming all data, trying to read again will attempt to read
        // another packet header, but since there's no more data, it will throw IOException
        assertThrows(IOException.class, () -> sis.read());
    }

    @Test

    public void handleRdmaError(RdmaConnection connection, Exception error) {
        log.warn("RDMA error occurred: {}", error.getMessage());
        
        if (isRecoverableError(error)) {
            // Attempt to recover connection
            try {
                connection.reset();
                log.info("RDMA connection recovered");
            } catch (Exception e) {

    }

    void ssn139() throws IOException {
        final Name calledName = new Name(address.firstCalledName(), 0x20, null);
        do {
            /* These Socket constructors attempt to connect before SO_TIMEOUT can be applied
            if (localAddr == null) {
                socket = new Socket( address.getHostAddress(), 139 );
            } else {

 * </p>
 * <ul>
 *   <li>Normalizing text content</li>
 *   <li>Handling resource names and content types</li>
 *   <li>Retrying extraction without resource name or content type if the initial attempt fails</li>
 *   <li>Extracting text from metadata if the main content extraction fails</li>
 *   <li>Reading content as plain text if all other methods fail</li>
 *   <li>Applying post-extraction filters</li>

                    if (errorCount > maxErrorCount) {
                        throw e;
                    }
                    errorCount++;
                    logger.warn("Failed to access AccessResult data. Retrying... (attempt={}/{})", errorCount, maxErrorCount, e);
                } finally {
                    if (systemHelper.isForceStop()) {
                        finishCrawling = true;
                        if (logger.isDebugEnabled()) {

                }
            }
        }
    }

    /**
     * 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