int CAP_NT_SMBS = 0x0010;
    /** RPC remote APIs capability */
    int CAP_RPC_REMOTE_APIS = 0x0020;
    /** 32-bit status codes capability */
    int CAP_STATUS32 = 0x0040;
    /** Level II oplocks capability */
    int CAP_LEVEL_II_OPLOCKS = 0x0080;
    /** Lock and read capability */
    int CAP_LOCK_AND_READ = 0x0100;
    /** NT find capability */
    int CAP_NT_FIND = 0x0200;
    /** DFS capability */

     */
    int CAP_RPC_REMOTE_APIS = 0x0020;
    /**
     * NT status codes are supported capability.
     */
    int CAP_STATUS32 = 0x0040;
    /**
     * Level II oplocks are supported capability.
     */
    int CAP_LEVEL_II_OPLOCKS = 0x0080;
    /**
     * Lock and read operation is supported capability.
     */
    int CAP_LOCK_AND_READ = 0x0100;
    /**

     *
     * @throws IOException
     *             if a network error occurs
     */

    @Override
    public int read() throws IOException {
        // need oplocks to cache otherwise use BufferedInputStream
        if (read(this.tmp, 0, 1) == -1) {
            return -1;
        }
        return this.tmp[0] & 0xFF;
    }

    /**

        // Force lease release if break handling times out
        releaseLease(key);
        log.warn("Lease break timeout for key: {}", key);
    }
}
```

### 10.2 Fallback to Oplocks
```java
if (!context.getConfig().isUseLeases() || !session.supports(SMB3_0)) {
    // Fall back to traditional oplock mechanism
    useOplockInstead();
}
```

## 11. Monitoring and Metrics