```java
// In SmbFile.java
private DirectoryLeaseManager directoryLeaseManager;
private Smb2LeaseKey directoryLeaseKey;

@Override
public SmbFile[] listFiles() throws IOException {
    if (!isDirectory()) {
        throw new IOException("Not a directory");
    }
    
    // Check if we can use cached directory listing
    if (directoryLeaseManager != null && 

    private final ServerSocket serverSocket;

    private MyServerExampleWithFrq() throws IOException {
      this.serverSocket = new ServerSocket(0);
    }

    static MyServerExampleWithFrq create(AtomicBoolean finalizeReferentRan) throws IOException {
      MyServerExampleWithFrq myServer = new MyServerExampleWithFrq();
      ServerSocket serverSocket = myServer.serverSocket;

    private final ServerSocket serverSocket;

    private MyServerExampleWithFrq() throws IOException {
      this.serverSocket = new ServerSocket(0);
    }

    static MyServerExampleWithFrq create(AtomicBoolean finalizeReferentRan) throws IOException {
      MyServerExampleWithFrq myServer = new MyServerExampleWithFrq();
      ServerSocket serverSocket = myServer.serverSocket;

   * deleted in the tear-down for this test.
   */
  protected final File createTempDir() throws IOException {
    File tempFile = File.createTempFile("IoTestCase", "");
    if (!tempFile.delete() || !tempFile.mkdir()) {
      throw new IOException("failed to create temp dir");
    }
    filesToDelete.add(tempFile);
    return tempFile;
  }

  /**

            if (dr != null) {
                final DfsReferral start = dr;
                IOException e = null;

                do {
                    try {
                        addr = UniAddress.getByName(dr.server);
                        return SmbTransport.getSmbTransport(addr, 0);
                    } catch (final IOException ioe) {
                        e = ioe;
                    }

import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.fail;

import java.io.IOException;
import java.lang.reflect.Field;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Properties;

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;

     * Otherwise, a ByteArrayInputStream is returned to read the data from memory.
     *
     * @return an InputStream to read the cached content
     * @throws IOException if an I/O error occurs while creating the InputStream
     */
    public InputStream getInputStream() throws IOException {
        if (file != null) {
            return new FileInputStream(file);
        }
        return new ByteArrayInputStream(data);
    }

        @DisplayName("Constructor with invalid signature should throw IOException")
        void testConstructor_ByteArray_InvalidSignature() {
            // Given
            byte[] invalidSignature = new byte[100];
            Arrays.fill(invalidSignature, (byte) 0xFF); // Fill with non-NTLMSSP signature

            // When & Then
            IOException thrown = assertThrows(IOException.class, () -> new Type2Message(invalidSignature));

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.netbios;

import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.connection

import java.io.IOException
import java.net.InetAddress
import java.net.Proxy
import java.net.Socket
import okhttp3.Connection
import okhttp3.Handshake
import okhttp3.HttpUrl
import okhttp3.Protocol
import okhttp3.Route

/**