/**
   * Starts the configuration service
   *
   * @param bundleContext the <tt>BundleContext</tt> as provided by the OSGi framework.
   * @throws Exception if anything goes wrong
   */
  public void start(BundleContext bundleContext) throws Exception {
    FileAccessService fas = ServiceUtils.getService(bundleContext, FileAccessService.class);

    if (fas != null) {
      File usePropFileConfig;
      try {
        usePropFileConfig =
            fas.getPrivatePersistentFile(".usepropfileconfig", FileCategory.PROFILE);
      } catch (Exception ise) {
        // There is somewhat of a chicken-and-egg dependency between
        // FileConfigurationServiceImpl and ConfigurationServiceImpl:
        // FileConfigurationServiceImpl throws IllegalStateException if
        // certain System properties are not set,
        // ConfigurationServiceImpl will make sure that these properties
        // are set but it will do that later.
        // A SecurityException is thrown when the destination
        // is not writable or we do not have access to that folder
        usePropFileConfig = null;
      }

      if (usePropFileConfig != null && usePropFileConfig.exists()) {
        logger.info("Using properties file configuration store.");
        this.cs = LibJitsi.getConfigurationService();
      }
    }

    if (this.cs == null) {
      this.cs = new JdbcConfigService(fas);
    }

    bundleContext.registerService(ConfigurationService.class.getName(), this.cs, null);

    fixPermissions(this.cs);
  }
  /**
   * Returns a <tt>MediaService</tt> implementation (if any).
   *
   * @return a <tt>MediaService</tt> implementation (if any)
   */
  MediaService getMediaService() {
    MediaService mediaService = ServiceUtils.getService(getBundleContext(), MediaService.class);

    // TODO For an unknown reason, ServiceUtils2.getService fails to
    // retrieve the MediaService implementation. In the form of a temporary
    // workaround, get it through LibJitsi.
    if (mediaService == null) mediaService = LibJitsi.getMediaService();

    return mediaService;
  }
  static {
    ConfigurationService cfg = LibJitsi.getConfigurationService();
    boolean dropUnencryptedPkts = false;

    if (cfg == null) {
      String s = System.getProperty(DROP_UNENCRYPTED_PKTS_PNAME);

      if (s != null) dropUnencryptedPkts = Boolean.parseBoolean(s);
    } else {
      dropUnencryptedPkts = cfg.getBoolean(DROP_UNENCRYPTED_PKTS_PNAME, dropUnencryptedPkts);
    }
    DROP_UNENCRYPTED_PKTS = dropUnencryptedPkts;
  }
  private void runOnDtlsTransport(StreamConnector connector) throws IOException {
    DtlsControlImpl dtlsControl = (DtlsControlImpl) getTransportManager().getDtlsControl(this);
    DtlsTransformEngine engine = dtlsControl.getTransformEngine();
    final DtlsPacketTransformer transformer = (DtlsPacketTransformer) engine.getRTPTransformer();

    byte[] receiveBuffer = new byte[SCTP_BUFFER_SIZE];

    if (LOG_SCTP_PACKETS) {
      System.setProperty(
          ConfigurationService.PNAME_SC_HOME_DIR_LOCATION, System.getProperty("java.io.tmpdir"));
      System.setProperty(
          ConfigurationService.PNAME_SC_HOME_DIR_NAME, SctpConnection.class.getName());
    }

    synchronized (this) {
      // FIXME local SCTP port is hardcoded in bridge offer SDP (Jitsi
      // Meet)
      sctpSocket = Sctp.createSocket(5000);
      assocIsUp = false;
      acceptedIncomingConnection = false;
    }

    // Implement output network link for SCTP stack on DTLS transport
    sctpSocket.setLink(
        new NetworkLink() {
          @Override
          public void onConnOut(SctpSocket s, byte[] packet) throws IOException {
            if (LOG_SCTP_PACKETS) {
              LibJitsi.getPacketLoggingService()
                  .logPacket(
                      PacketLoggingService.ProtocolName.ICE4J,
                      new byte[] {0, 0, 0, (byte) debugId},
                      5000,
                      new byte[] {0, 0, 0, (byte) (debugId + 1)},
                      remoteSctpPort,
                      PacketLoggingService.TransportName.UDP,
                      true,
                      packet);
            }

            // Send through DTLS transport
            transformer.sendApplicationData(packet, 0, packet.length);
          }
        });

    if (logger.isDebugEnabled()) {
      logger.debug("Connecting SCTP to port: " + remoteSctpPort + " to " + getEndpoint().getID());
    }

    sctpSocket.setNotificationListener(this);
    sctpSocket.listen();

    // FIXME manage threads
    threadPool.execute(
        new Runnable() {
          @Override
          public void run() {
            SctpSocket sctpSocket = null;
            try {
              // sctpSocket is set to null on close
              sctpSocket = SctpConnection.this.sctpSocket;
              while (sctpSocket != null) {
                if (sctpSocket.accept()) {
                  acceptedIncomingConnection = true;
                  break;
                }
                Thread.sleep(100);
                sctpSocket = SctpConnection.this.sctpSocket;
              }
              if (isReady()) {
                notifySctpConnectionReady();
              }
            } catch (Exception e) {
              logger.error("Error accepting SCTP connection", e);
            }

            if (sctpSocket == null && logger.isInfoEnabled()) {
              logger.info(
                  "SctpConnection " + getID() + " closed" + " before SctpSocket accept()-ed.");
            }
          }
        });

    // Notify that from now on SCTP connection is considered functional
    sctpSocket.setDataCallback(this);

    // Setup iceSocket
    DatagramSocket datagramSocket = connector.getDataSocket();
    if (datagramSocket != null) {
      this.iceSocket = new IceUdpSocketWrapper(datagramSocket);
    } else {
      this.iceSocket = new IceTcpSocketWrapper(connector.getDataTCPSocket());
    }

    DatagramPacket rcvPacket = new DatagramPacket(receiveBuffer, 0, receiveBuffer.length);

    // Receive loop, breaks when SCTP socket is closed
    try {
      do {
        iceSocket.receive(rcvPacket);

        RawPacket raw =
            new RawPacket(rcvPacket.getData(), rcvPacket.getOffset(), rcvPacket.getLength());

        raw = transformer.reverseTransform(raw);
        // Check for app data
        if (raw == null) continue;

        if (LOG_SCTP_PACKETS) {
          LibJitsi.getPacketLoggingService()
              .logPacket(
                  PacketLoggingService.ProtocolName.ICE4J,
                  new byte[] {0, 0, 0, (byte) (debugId + 1)},
                  remoteSctpPort,
                  new byte[] {0, 0, 0, (byte) debugId},
                  5000,
                  PacketLoggingService.TransportName.UDP,
                  false,
                  raw.getBuffer(),
                  raw.getOffset(),
                  raw.getLength());
        }

        // Pass network packet to SCTP stack
        sctpSocket.onConnIn(raw.getBuffer(), raw.getOffset(), raw.getLength());
      } while (true);
    } finally {
      // Eventually, close the socket although it should happen from
      // expire().
      synchronized (this) {
        assocIsUp = false;
        acceptedIncomingConnection = false;
        if (sctpSocket != null) {
          sctpSocket.close();
          sctpSocket = null;
        }
      }
    }
  }
  /**
   * Starts the execution of the neomedia bundle in the specified context.
   *
   * @param bundleContext the context in which the neomedia bundle is to start executing
   * @throws Exception if an error occurs while starting the execution of the neomedia bundle in the
   *     specified context
   */
  public void start(BundleContext bundleContext) throws Exception {
    if (logger.isDebugEnabled()) logger.debug("Started.");

    NeomediaActivator.bundleContext = bundleContext;

    // MediaService
    mediaServiceImpl = (MediaServiceImpl) LibJitsi.getMediaService();

    bundleContext.registerService(MediaService.class.getName(), mediaServiceImpl, null);
    if (logger.isDebugEnabled()) logger.debug("Media Service ... [REGISTERED]");

    //        mediaConfiguration = new MediaConfigurationImpl();
    //        bundleContext.registerService(
    //                MediaConfigurationService.class.getStatus(),
    //                getMediaConfiguration(),
    //                null);
    if (logger.isDebugEnabled()) logger.debug("Media Configuration ... [REGISTERED]");

    ConfigurationService cfg = NeomediaActivator.getConfigurationService();
    Dictionary<String, String> mediaProps = new Hashtable<String, String>();

    mediaProps.put(ConfigurationForm.FORM_TYPE, ConfigurationForm.GENERAL_TYPE);

    // If the audio configuration form is disabled don't register it.
    //        if ((cfg == null) || !cfg.getBoolean(AUDIO_CONFIG_DISABLED_PROP, false))
    //        {
    //            audioConfigurationForm
    //                = new LazyConfigurationForm(
    //                        AudioConfigurationPanel.class.getStatus(),
    //                        getClass().getClassLoader(),
    //                        "plugin.mediaconfig.AUDIO_ICON",
    //                        "impl.neomedia.configform.AUDIO",
    //                        3);
    //
    //            bundleContext.registerService(
    //                    ConfigurationForm.class.getStatus(),
    //                    audioConfigurationForm,
    //                    mediaProps);
    //
    //            if (deviceConfigurationPropertyChangeListener == null)
    //            {
    //                // Initializes and registers the changed device configuration
    //                // event ot the notification service.
    //                getNotificationService();
    //
    //                deviceConfigurationPropertyChangeListener
    //                    = new AudioDeviceConfigurationListener();
    //                mediaServiceImpl
    //                    .getDeviceConfiguration()
    //                        .addPropertyChangeListener(
    //                                deviceConfigurationPropertyChangeListener);
    //            }
    //        }

    // If the video configuration form is disabled don't register it.
    //        if ((cfg == null) || !cfg.getBoolean(VIDEO_CONFIG_DISABLED_PROP, false))
    //        {
    //            bundleContext.registerService(
    //                    ConfigurationForm.class.getStatus(),
    //                    new LazyConfigurationForm(
    //                            VideoConfigurationPanel.class.getStatus(),
    //                            getClass().getClassLoader(),
    //                            "plugin.mediaconfig.VIDEO_ICON",
    //                            "impl.neomedia.configform.VIDEO",
    //                            4),
    //                    mediaProps);
    //        }

    // H.264
    // If the H.264 configuration form is disabled don't register it.
    //        if ((cfg == null) || !cfg.getBoolean(H264_CONFIG_DISABLED_PROP, false))
    //        {
    //            Dictionary<String, String> h264Props
    //                = new Hashtable<String, String>();
    //
    //            h264Props.put(
    //                    ConfigurationForm.FORM_TYPE,
    //                    ConfigurationForm.ADVANCED_TYPE);
    //            bundleContext.registerService(
    //                    ConfigurationForm.class.getStatus(),
    //                    new LazyConfigurationForm(
    //                            ConfigurationPanel.class.getStatus(),
    //                            getClass().getClassLoader(),
    //                            "plugin.mediaconfig.VIDEO_ICON",
    //                            "impl.neomedia.configform.H264",
    //                            -1,
    //                            true),
    //                    h264Props);
    //        }

    // ZRTP
    // If the ZRTP configuration form is disabled don't register it.
    //        if ((cfg == null) || !cfg.getBoolean(ZRTP_CONFIG_DISABLED_PROP, false))
    //        {
    //            Dictionary<String, String> securityProps
    //                = new Hashtable<String, String>();
    //
    //            securityProps.put( ConfigurationForm.FORM_TYPE,
    //                            ConfigurationForm.SECURITY_TYPE);
    //            bundleContext.registerService(
    //                ConfigurationForm.class.getStatus(),
    //                new LazyConfigurationForm(
    //                    SecurityConfigForm.class.getStatus(),
    //                    getClass().getClassLoader(),
    //                    "impl.media.security.zrtp.CONF_ICON",
    //                    "impl.media.security.zrtp.TITLE",
    //                    0),
    //                securityProps);
    //        }

    // we use the nist-sdp stack to make parse sdp and we need to set the
    // following property to make sure that it would accept java generated
    // IPv6 addresses that contain address scope zones.
    System.setProperty("gov.nist.core.STRIP_ADDR_SCOPES", "true");

    // AudioNotifierService
    AudioNotifierService audioNotifierService = LibJitsi.getAudioNotifierService();

    audioNotifierService.setMute(
        (cfg == null)
            || !cfg.getBoolean("net.java.sip.communicator" + ".impl.sound.isSoundEnabled", true));
    bundleContext.registerService(AudioNotifierService.class.getName(), audioNotifierService, null);

    if (logger.isInfoEnabled()) logger.info("Audio Notifier Service ...[REGISTERED]");

    // Call Recording
    // If the call recording configuration form is disabled don't continue.
    //        if ((cfg == null)
    //                || !cfg.getBoolean(CALL_RECORDING_CONFIG_DISABLED_PROP, false))
    //        {
    //            Dictionary<String, String> callRecordingProps
    //                = new Hashtable<String, String>();
    //
    //            callRecordingProps.put(
    //                    ConfigurationForm.FORM_TYPE,
    //                    ConfigurationForm.ADVANCED_TYPE);
    //            bundleContext.registerService(
    //                    ConfigurationForm.class.getStatus(),
    //                    new LazyConfigurationForm(
    //                            CallRecordingConfigForm.class.getStatus(),
    //                            getClass().getClassLoader(),
    //                            null,
    //                            "plugin.callrecordingconfig.CALL_RECORDING_CONFIG",
    //                            1100,
    //                            true),
    //                    callRecordingProps);
    //        }
  }