check(socket == null)
    val socket = serverSocket!!.accept()!!
    this.socket = socket

    // Bail out now if this instance was closed while waiting for the socket to accept.
    synchronized(this) {
      if (executor.isShutdown) {
        socket.close()
        return
      }
    }
    val outputStream = socket.getOutputStream()
    val inputStream = socket.getInputStream()

    getDelegate(sslSocket)?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? = getDelegate(sslSocket)?.getSelectedProtocol(sslSocket)

  @Synchronized private fun getDelegate(sslSocket: SSLSocket): SocketAdapter? {
    if (this.delegate == null && socketAdapterFactory.matchesSocket(sslSocket)) {
      this.delegate = socketAdapterFactory.create(sslSocket)
    }

        final Properties copyProperties = new Properties();
        // guard against modification/removal of keys in the given properties (MNG-5670, MNG-6053, MNG-6105)
        synchronized (properties) {
            copyProperties.putAll(properties);
        }
        return copyProperties;
    }

    int readDataWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        if (pipe.pipeIn != null) {
            final TransactNamedPipeInputStream in = (TransactNamedPipeInputStream) pipe.pipeIn;
            synchronized (in.lock) {
                in.receive(buffer, bufferIndex, len);
                in.lock.notify();
            }
        }
        return len;
    }

    @Override
    public String toString() {

        DcerpcHandle handle = null;
        LsaPolicyHandle policyHandle = null;

        synchronized (sid_cache) {
            try {
                handle = DcerpcHandle.getHandle("ncacn_np:" + authorityServerName + "[\\PIPE\\lsarpc]", auth);
                String server = authorityServerName;

 * since an iteration across all row keys occurs.
 *
 * <p>Note that this implementation is not synchronized. If multiple threads access this table
 * concurrently and one of the threads modifies the table, it must be synchronized externally.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#table">{@code Table}</a>.
 *

 * since an iteration across all row keys occurs.
 *
 * <p>Note that this implementation is not synchronized. If multiple threads access this table
 * concurrently and one of the threads modifies the table, it must be synchronized externally.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#table">{@code Table}</a>.
 *

        handle.sendrecv(rpc);
        if (rpc.retval != 0) {
            throw new SmbException(rpc.retval, false);
        }
        this.opened = true;
    }

    @Override
    public synchronized void close() throws IOException {
        if (this.opened) {
            this.opened = false;
            final MsrpcLsarClose rpc = new MsrpcLsarClose(this);
            this.handle.sendrecv(rpc);

     * The ingester is inserted into the collection and the array is re-sorted by priority.
     * This method is thread-safe.
     *
     * @param ingester the ingester to add
     */
    public synchronized void add(final Ingester ingester) {
        if (logger.isDebugEnabled()) {
            logger.debug("Loaded Ingester: {}", ingester.getClass().getSimpleName());
        }

    /**
     * Marks the current position in this input stream.
     *
     * @param readlimit the maximum limit of bytes that can be read before the mark position becomes invalid
     */
    @Override
    public synchronized void mark(final int readlimit) {
        inputStream.mark(readlimit);
    }

    /**
     * Tests if this input stream supports the mark and reset methods.
     *