assertEquals("file:", protocolHelper.getFileProtocols()[0]);
        assertEquals("smb:", protocolHelper.getFileProtocols()[1]);
        assertEquals("smbx:", protocolHelper.getFileProtocols()[2]);

        assertTrue(protocolHelper.isValidFileProtocol("smbx://test"));

        protocolHelper.addFileProtocol("smbx");
        assertEquals(2, protocolHelper.getWebProtocols().length);

# SMB3 Lease Feature - Detailed Design Document

## 1. Overview

SMB3 leases provide a client caching mechanism that replaces the traditional oplock mechanism. Leases enable better performance through client-side caching while maintaining cache coherency across multiple clients.

## 2. Protocol Specification Reference

- **MS-SMB2 Section 2.2.13**: SMB2 CREATE Request with Lease Context
- **MS-SMB2 Section 2.2.14**: SMB2 CREATE Response with Lease State

public static final String USE_RDMA = "jcifs.smb.client.useRDMA";
public static final String RDMA_PROVIDER = "jcifs.smb.client.rdmaProvider";
public static final String RDMA_READ_WRITE_THRESHOLD = "jcifs.smb.client.rdmaReadWriteThreshold";
public static final String RDMA_MAX_SEND_SIZE = "jcifs.smb.client.rdmaMaxSendSize";
public static final String RDMA_MAX_RECEIVE_SIZE = "jcifs.smb.client.rdmaMaxReceiveSize";

    }

    @Test
    void testEqualsAndHashCode() {
        ServerMessageBlock smb1 = new TestServerMessageBlock();
        smb1.mid = 100;

        ServerMessageBlock smb2 = new TestServerMessageBlock();
        smb2.mid = 100;

        ServerMessageBlock smb3 = new TestServerMessageBlock();
        smb3.mid = 200;

        assertEquals(smb1, smb2);
        assertNotEquals(smb1, smb3);

```properties
# Lease configuration
jcifs.smb.client.useLeases=true
jcifs.smb.client.leaseTimeout=30000

# Persistent handles
jcifs.smb.client.usePersistentHandles=true
jcifs.smb.client.durableTimeout=120000

# Multi-channel
jcifs.smb.client.useMultiChannel=true
jcifs.smb.client.maxChannels=4
jcifs.smb.client.channelBindingPolicy=required

# Directory leasing
jcifs.smb.client.useDirectoryLeasing=true

    }

    @Test
    @DisplayName("SMB version detection via flag or response type")
    void isSMB2_variants() throws Exception {
        // 1) smb2 flag set
        setField(transport, "smb2", true);
        assertTrue(transport.isSMB2());

        // 2) smb2 false but negotiated is SMB2 response
        setField(transport, "smb2", false);
        Smb2NegotiateResponse smb2 = new Smb2NegotiateResponse(cfg);

import jcifs.internal.smb2.info.Smb2SetInfoRequest;
import jcifs.internal.smb2.io.Smb2WriteRequest;
import jcifs.internal.smb2.io.Smb2WriteResponse;

/**
 * This <code>OutputStream</code> can write bytes to a file on an SMB file server.
 */

public class SmbFileOutputStream extends OutputStream {

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

import jcifs.internal.smb1.trans2.Trans2FindFirst2Response;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ioctl.Smb2IoctlRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlResponse;
import jcifs.internal.smb2.ioctl.ValidateNegotiateInfoRequest;
import jcifs.internal.smb2.ioctl.ValidateNegotiateInfoResponse;
import jcifs.internal.smb2.nego.Smb2NegotiateRequest;
import jcifs.internal.smb2.nego.Smb2NegotiateResponse;

        // Check SMB1 signature
        if (protocolId == 0x424D53FF) { // 0xFF 'S' 'M' 'B'
            // SMB1
            if (structureSize < 32 || structureSize > 65535) {
                failedValidations.incrementAndGet();
                throw new SmbException("Invalid SMB1 header size: " + structureSize);
            }
        }
        // Check SMB2/3 signature

    /**
     * Property {@code jcifs.smb.client.aes256Enabled} (boolean, default true)
     *
     * @return whether AES-256 encryption ciphers are enabled for SMB3.x
     * @since 2.2
     */
    boolean isAES256Enabled();

    /**
     * Property {@code jcifs.smb.client.compressionEnabled} (boolean, default false)
     *
     * @return whether SMB3 compression is enabled
     */