import jcifs.smb1.Config;
import jcifs.smb1.util.LogStream;

/**
Do not use this class. Writing to the OutputStream of this type of socket
requires leaving a 4 byte prefix for the NBT header. IOW you must call
write( buf, 4, len ). Calling write( buf, 0, len ) will generate an error.
 */

public class NbtSocket extends Socket {

    private static final int SSN_SRVC_PORT = 139;
    private static final int BUFFER_SIZE = 512;

	return n, nil
}

func (f *testFile) Write(b []byte) (int, error) {
	if len(b) == 0 {
		return 0, nil
	}
	if len(f.ops) == 0 {
		return 0, errors.New("unexpected Write operation")
	}
	s, ok := f.ops[0].(string)
	if !ok {
		return 0, errors.New("unexpected Write operation")
	}

	if !strings.HasPrefix(s, string(b)) {
		return 0, testError{fmt.Errorf("got Write(%q), want Write(%q)", b, s)}
	}
	if len(s) > len(b) {

 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * 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.internal.smb1.trans;

import jcifs.Configuration;
import jcifs.internal.SMBProtocolDecodingException;

  fun fromDer(byteString: ByteString): T {
    val buffer = Buffer().write(byteString)
    val reader = DerReader(buffer)
    return fromDer(reader)
  }

  /**
   * Writes [value] to this adapter, unless it is the default value and can be safely omitted.
   *
   * If this does write a value, it will write a tag and a length and a full value.
   */
  fun toDer(
    writer: DerWriter,
    value: T,

    client.webSocket!!.close(1000, "Hello")
    server.processNextFrame()
    // Not closed until close reply is received.
    assertThat(client.closed).isFalse()

    // Manually write an invalid masked close frame.
    server.sink.write("888760b420bb635c68de0cd84f".decodeHex()).emit()
    client.processNextFrame() // Detects error, disconnects immediately since close already sent.
    client.webSocket!!.finishReader()

		}
	}

	return &LockedFile{File: f}, nil
}

// TryLockedOpenFile - tries a new write lock, functionality
// it is similar to LockedOpenFile with with syscall.LOCK_EX
// mode but along with syscall.LOCK_NB such that the function
// doesn't wait forever but instead returns if it cannot
// acquire a write lock.
func TryLockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {

        offset += 4;

        // Write context name
        System.arraycopy(CONTEXT_NAME_BYTES, 0, buffer, offset, 4);
        offset += 4;

        // Padding to align data to 8-byte boundary
        offset += 4;

        // Write standard lease data (32 bytes)
        leaseKey.encode(buffer, offset); // LeaseKey (16 bytes)
        offset += 16;

}

// getSHA256Hash returns SHA-256 sum of given data.
func getSHA256Sum(data []byte) []byte {
	hash := sha256.New()
	hash.Write(data)
	return hash.Sum(nil)
}

// getMD5Sum returns MD5 sum of given data.
func getMD5Sum(data []byte) []byte {
	hash := md5.New()
	hash.Write(data)
	return hash.Sum(nil)
}

// getMD5Hash returns MD5 hash in hex encoding of given data.
func getMD5Hash(data []byte) string {

}

// A DRWMutex is a distributed mutual exclusion lock.
type DRWMutex struct {
	Names                []string
	writeLocks           []string // Array of nodes that granted a write lock
	readLocks            []string // Array of array of nodes that granted reader locks
	rng                  *rand.Rand
	m                    sync.Mutex // Mutex to prevent multiple simultaneous locks from this node

        SMBUtil.writeInt4(STRUCTURE_SIZE, dst, dstIndex); // DataLength
        dstIndex += 4;

        // Write context name
        System.arraycopy(CONTEXT_NAME_BYTES, 0, dst, dstIndex, 4);
        dstIndex += 4;

        // Padding to align data to 8-byte boundary
        dstIndex += 4;

        // Write durable handle V2 request data (32 bytes total)
        // MS-SMB2 2.2.13.2.4 structure: