import jcifs.config.PropertyConfiguration;

/**
 * Global singleton context
 *
 * @author mbechler
 *
 */
public class SingletonContext extends BaseContext implements CIFSContext {

    private static final Logger log = LoggerFactory.getLogger(SingletonContext.class);
    private static SingletonContext INSTANCE;

    /**
     * Initialize singleton context using custom properties
     *
     * This method can only be called once.

    void resetSingleton() {
        try {
            Field instance = SingletonContext.class.getDeclaredField("INSTANCE");
            instance.setAccessible(true);
            instance.set(null, null);
        } catch (NoSuchFieldException | IllegalAccessException e) {
            log.error("Failed to reset SingletonContext instance", e);
            fail("Failed to reset SingletonContext instance: " + e.getMessage());
        }

import jcifs.SmbPipeResource;
import jcifs.context.SingletonContext;
import jcifs.internal.smb1.com.SmbComNTCreateAndX;
import jcifs.internal.smb1.com.SmbComNTCreateAndXResponse;

@ExtendWith(MockitoExtension.class)
class SmbNamedPipeTest {

    // Creates a minimal valid CIFS context that does not perform I/O by itself
    private CIFSContext ctx() {
        return SingletonContext.getInstance();
    }

    @Nested

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import jcifs.SmbResourceLocator;
import jcifs.context.SingletonContext;
import jcifs.smb.NtlmPasswordAuthentication;
import jcifs.smb.SmbFile;

/**
 * Unit tests for the NetworkExplorer servlet.
 * Tests initialization, authentication handling, and servlet lifecycle.
 */

- **DCE/RPC Protocol**: Support for advanced operations

## Quick Start

### Basic Usage

```java
import jcifs.CIFSContext;
import jcifs.context.SingletonContext;
import jcifs.smb.SmbFile;

// Using default context
CIFSContext context = SingletonContext.getInstance();

// Access a file (encryption is transparent - automatically used if server requires it)

        assertTrue(conn instanceof SmbFile);
        SmbFile file = (SmbFile) conn;
        assertNotNull(file.getContext(), "Context must be non-null");
        assertSame(SingletonContext.getInstance(), file.getContext(), "Should use SingletonContext when none provided");
    }

    @Test
    @DisplayName("parseURL: exact 'smb://' sets default port")
    void testParseURL_ExactRoot_DefaultPort() throws MalformedURLException {

import java.net.URLConnection;
import java.net.URLStreamHandler;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;
import jcifs.SmbConstants;
import jcifs.context.SingletonContext;

/**
 * URL handler for transparent smb:// URL handling
 *
 */
public class Handler extends URLStreamHandler {

    private static final Logger log = LoggerFactory.getLogger(Handler.class);

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Properties;
import java.util.StringTokenizer;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.context.SingletonContext;

/**
 * This class now contains only utilities for config parsing.
 *
 * We strongly suggest that you create an explicit {@link jcifs.context.CIFSContextWrapper}

import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.ResourceFilter;
import jcifs.SmbConstants;
import jcifs.SmbResource;
import jcifs.SmbResourceLocator;
import jcifs.context.SingletonContext;

/**
 * Tests for NetServerFileEntryAdapterIterator.
 *
 * Intent: Validate iteration behavior, filtering, invalid inputs handling,
 * and delegation to the underlying iterator.
 */

            NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(SingletonContext.getInstance(), WORKGROUP, USERNAME, PASSWORD);
            context = SingletonContext.getInstance().withCredentials(auth);
        } catch (Exception e) {
            log.warn("Failed to create authenticated context, trying guest access", e);
            context = SingletonContext.getInstance();
        }