import org.apache.commons.lang3.StringUtils;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPClient.NatServerResolverImpl;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPFileFilters;
import org.apache.commons.net.ftp.FTPSClient;
import org.apache.commons.net.util.TrustManagerUtils;

            assertEquals("ftp://localhost:10021/text 3.txt", urlList.get(2));
            assertEquals("ftp://localhost:10021/text1.txt", urlList.get(3));
            assertEquals("ftp://localhost:10021/text2.txt", urlList.get(4));
        } finally {
            if (server != null) {
                server.stop();
            }
        }
    }

### Key Features

- **Multi-Protocol Support**: HTTP/HTTPS, File System, FTP, SMB/CIFS, Cloud Storage (MinIO, S3)
- **Comprehensive Content Extraction**: Office documents, PDFs, archives, images, audio/video files

        urlFilter.init(sessionId);

        urlFilter.addInclude("(http|https|ftp|file)://.*");
        urlFilter.addExclude("javascript:.*");
        urlFilter.addExclude("mailto:.*");

        assertTrue(urlFilter.match("http://example.com/"));
        assertTrue(urlFilter.match("https://example.com/"));
        assertTrue(urlFilter.match("ftp://files.com/"));
        assertTrue(urlFilter.match("file:///home/user/file"));

        Rule matchedRule1 = ruleManager.getRule(responseData1);
        assertEquals("httpRule", matchedRule1.getRuleId()); // First match

        ResponseData responseData2 = new ResponseData();
        responseData2.setUrl("ftp://files.com/document.pdf");
        Rule matchedRule2 = ruleManager.getRule(responseData2);
        assertEquals("pdfRule", matchedRule2.getRuleId());

        ResponseData responseData3 = new ResponseData();