fileIdField.setAccessible(true);
            fileIdField.set(notification, fileId);

            String result = notification.toString();

            // Note: There's a typo in the original code - "Opblock" instead of "Oplock"
            assertTrue(result.startsWith("Smb2OpblockBreakNotification["));
            assertTrue(result.contains("oplockLevel=" + oplockLevel));

        String ip = "192.168.1.7";

        // Block the IP
        for (int i = 1; i <= 5; i++) {
            assertTrue(rateLimiter.checkAttempt("user" + i, ip));
            rateLimiter.recordFailure("user" + i, ip);
        }

        // Should be blocked
        assertFalse(rateLimiter.checkAttempt("user6", ip), "IP should be blocked");

        // Manually unblock

            log.info("Manually unlocked account: {}", username);
            return true;
        }
        return false;
    }

    /**
     * Manually unblock an IP
     *
     * @param sourceIp the IP to unblock
     * @return true if IP was unblocked, false if not found
     */
    public boolean unblockIp(String sourceIp) {
        IpAttempts ip = ipAttempts.get(sourceIp);

		}
		m.addResponse(Response{Err: ErrIncorrectSequence})
		return false
	}
	m.RecvSeq++
	return true
}

// response will send handleIncoming response to client.
// may never block.
// Should return whether the next call would block.
func (m *muxClient) response(seq uint32, r Response) {
	if debugReqs {
		fmt.Println(m.MuxID, m.parent.String(), "RESP")
	}
	if debugPrint {

		if err != nil {
			if !xnet.IsNetworkOrHostDown(err, true) {
				gridLogIfNot(ctx, fmt.Errorf("ws read: %w", err), net.ErrClosed, io.EOF)
			}
			return
		}
		block := c.blockMessages.Load()
		if block != nil && *block != nil {
			<-*block
		}

		if c.incomingBytes != nil {
			c.incomingBytes(int64(len(msg)))
		}

		// Parse the received message
		var m message

        runJavaBinaryCompatibilityCheck(v1, v2) {
            assertNotBinaryCompatible()
            block()
        }

    internal
    fun checkBinaryCompatible(v1: File.() -> Unit = {}, v2: File.() -> Unit = {}, block: CheckResult.() -> Unit = {}): CheckResult =
        runBinaryCompatibilityCheck(v1, v2) {
            assertBinaryCompatible()
            block()
        }

    /**
     * No oplock
     */
    public static final byte SMB2_OPLOCK_LEVEL_NONE = 0x0;
    /**
     * Level II oplock
     */
    public static final byte SMB2_OPLOCK_LEVEL_II = 0x1;
    /**
     * Exclusive oplock
     */
    public static final byte SMB2_OPLOCK_LEVEL_EXCLUSIVE = 0x8;
    /**
     * Batch oplock
     */

        DummyAndXBlock block = new DummyAndXBlock(next);

        assertNotNull(block);
        assertSame(next, block.andx, "andx should reference provided SMB");
    }

    @Test
    @DisplayName("getBatchLimit defaults to 0")
    void testGetBatchLimitDefault() {
        DummyAndXBlock block = new DummyAndXBlock();
        assertEquals(0, block.getBatchLimit((byte) 0x25));
    }

    @Test

// nearest block edge where 0 <= n < blockSize.
func blockPadding(offset int64) (n int64) {
	return -offset & (blockSize - 1)
}

var zeroBlock block

type block [blockSize]byte

// Convert block to any number of formats.
func (b *block) toV7() *headerV7       { return (*headerV7)(b) }
func (b *block) toGNU() *headerGNU     { return (*headerGNU)(b) }

## Implementation Phases

### Phase 1: SMB3 Lease Implementation (Foundation)
**Priority: HIGH** | **Estimated Effort: 3-4 weeks**

SMB3 leases replace the traditional oplock mechanism and are foundational for other features.

#### 1.1 Core Lease Infrastructure
```
Package: jcifs.internal.smb2.lease
├── Smb2LeaseBreak.java          - Lease break notification handling