<dependency>
    <groupId>org.codelibs</groupId>
    <artifactId>jcifs</artifactId>
    <version>2.1.39</version>
</dependency>
```



## Features

### Protocol Support
The library supports a full range of SMB protocols with automatic negotiation:

**Supported Protocols:**
- **SMB1/CIFS**: Legacy support via `jcifs.smb1/` package
- **SMB 2.0.2**: Windows Vista+ (0x0202)
- **SMB 2.1**: Windows 7/Server 2008R2 (0x0210)

        final Smb2TransformHeader header = new Smb2TransformHeader();

        // Check protocol ID
        final int protocolId = SMBUtil.readInt4(buffer, bufferIndex);
        if (protocolId != TRANSFORM_PROTOCOL_ID) {
            throw new IllegalArgumentException("Invalid transform header protocol ID: 0x" + Integer.toHexString(protocolId));
        }
        bufferIndex += 4;

        // Read signature

            }
        } else {
            failedValidations.incrementAndGet();
            log.warn("Invalid SMB protocol ID: 0x{}", Integer.toHexString(protocolId));
            throw new SmbException("Invalid SMB protocol identifier");
        }

        // Validate command is in valid range
        if (command < 0 || command > 255) {
            failedValidations.incrementAndGet();

crawler.urlFilter.addInclude(".*\\.pdf$");

// Exclude patterns  
crawler.urlFilter.addExclude(".*\\.js$");
crawler.urlFilter.addExclude(".*login.*");
```

## Supported Protocols and Formats

### Protocols
- **HTTP/HTTPS**: Full web crawling support with cookies, authentication, redirects
- **File System**: Local and network file system access
- **FTP**: FTP server crawling with authentication

                }
            }
        }
    }

    /**
     * Initializes the minimum and maximum protocol versions from string values.
     *
     * @param minStr string representation of minimum protocol version
     * @param maxStr string representation of maximum protocol version
     */
    protected void initProtocolVersions(final String minStr, final String maxStr) {

## Origin { #origin }

An origin is the combination of protocol (`http`, `https`), domain (`myapp.com`, `localhost`, `localhost.tiangolo.com`), and port (`80`, `443`, `8080`).

So, all these are different origins:

* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Even if they are all in `localhost`, they use different protocols or ports, so, they are different "origins".

## Steps { #steps }

        // Protocol errors
        INVALID_PARAMETER("Invalid parameter", ErrorCategory.PROTOCOL, false), NOT_SUPPORTED("Operation not supported",
                ErrorCategory.PROTOCOL, false), INVALID_PROTOCOL("Invalid protocol", ErrorCategory.PROTOCOL,
                        false), MESSAGE_TOO_LARGE("Message too large", ErrorCategory.PROTOCOL, false),

        // Resource errors

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

import jcifs.RuntimeCIFSException;
import jcifs.smb.RequestParam;

/**
 * This class simplifies communication for protocols that support
 * multiplexing requests. It encapsulates a stream and some protocol
 * knowledge (provided by a concrete subclass) so that connecting,
 * disconnecting, sending, and receiving can be syncronized

* **After** obtaining a secure connection, the communication protocol is **still HTTP**.
    * The contents are **encrypted**, even though they are being sent with the **HTTP protocol**.

     */
    boolean isDfsConvertToFQDN();

    /**
     * Minimum protocol version
     *
     * Property {@code jcifs.smb.client.minVersion} (string, default SMB1)
     *
     * @see DialectVersion
     * @return minimum protocol version to use/allow
     * @since 2.1
     */
    DialectVersion getMinimumVersion();

    /**
     * Maximum protocol version
     *