Esempio n. 1
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  /**
   * Creates a new <tt>JingleNodesRelayedCandidate</tt> instance which is to represent a specific
   * <tt>TransportAddress</tt>.
   *
   * @param transportAddress the <tt>TransportAddress</tt> allocated by the relay
   * @param component the <tt>Component</tt> for which the candidate will be added
   * @param localEndPoint <tt>TransportAddress</tt> of the Jingle Nodes relay where we will send our
   *     packet.
   * @return a new <tt>JingleNodesRelayedCandidate</tt> instance which represents the specified
   *     <tt>TransportAddress</tt>
   */
  protected JingleNodesCandidate createJingleNodesCandidate(
      TransportAddress transportAddress, Component component, TransportAddress localEndPoint) {
    JingleNodesCandidate cand = null;

    try {
      cand = new JingleNodesCandidate(transportAddress, component, localEndPoint);
      IceSocketWrapper stunSocket = cand.getStunSocket(null);
      cand.getStunStack().addSocket(stunSocket);
    } catch (Throwable e) {
      logger.debug("Exception occurred when creating JingleNodesCandidate: " + e);
    }

    return cand;
  }
Esempio n. 2
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  /**
   * Gathers Jingle Nodes candidates for all host <tt>Candidate</tt>s that are already present in
   * the specified <tt>component</tt>. This method relies on the specified <tt>component</tt> to
   * already contain all its host candidates so that it would resolve them.
   *
   * @param component the {@link Component} that we'd like to gather candidate Jingle Nodes
   *     <tt>Candidate</tt>s for
   * @return the <tt>LocalCandidate</tt>s gathered by this <tt>CandidateHarvester</tt>
   */
  @Override
  public synchronized Collection<LocalCandidate> harvest(Component component) {
    logger.info("harvest Jingle Nodes");

    Collection<LocalCandidate> candidates = new HashSet<LocalCandidate>();
    String ip = null;
    int port = -1;

    /* if we have already a candidate (RTCP) allocated, get it */
    if (localAddressSecond != null && relayedAddressSecond != null) {
      LocalCandidate candidate =
          createJingleNodesCandidate(relayedAddressSecond, component, localAddressSecond);

      // try to add the candidate to the component and then only add it to
      // the harvest not redundant (not sure how it could be red. but ...)
      if (component.addLocalCandidate(candidate)) {
        candidates.add(candidate);
      }

      localAddressSecond = null;
      relayedAddressSecond = null;
      return candidates;
    }

    XMPPConnection conn = serviceNode.getConnection();
    JingleChannelIQ ciq = null;

    if (serviceNode != null) {
      final TrackerEntry preferred = serviceNode.getPreferedRelay();

      if (preferred != null) {
        ciq = SmackServiceNode.getChannel(conn, preferred.getJid());
      }
    }

    if (ciq != null) {
      ip = ciq.getHost();
      port = ciq.getRemoteport();

      if (logger.isInfoEnabled()) {
        logger.info(
            "JN relay: " + ip + " remote port:" + port + " local port: " + ciq.getLocalport());
      }

      if (ip == null || ciq.getRemoteport() == 0) {
        logger.warn("JN relay ignored because ip was null or port 0");
        return candidates;
      }

      // Drop the scope or interface name if the relay sends it
      // along in its IPv6 address. The scope/ifname is only valid on the
      // host that owns the IP and we don't need it here.
      int scopeIndex = ip.indexOf('%');
      if (scopeIndex > 0) {
        logger.warn("Dropping scope from assumed IPv6 address " + ip);
        ip = ip.substring(0, scopeIndex);
      }

      /* RTP */
      TransportAddress relayedAddress = new TransportAddress(ip, port, Transport.UDP);
      TransportAddress localAddress = new TransportAddress(ip, ciq.getLocalport(), Transport.UDP);

      LocalCandidate local = createJingleNodesCandidate(relayedAddress, component, localAddress);

      /* RTCP */
      relayedAddressSecond = new TransportAddress(ip, port + 1, Transport.UDP);
      localAddressSecond = new TransportAddress(ip, ciq.getLocalport() + 1, Transport.UDP);

      // try to add the candidate to the component and then only add it to
      // the harvest not redundant (not sure how it could be red. but ...)
      if (component.addLocalCandidate(local)) {
        candidates.add(local);
      }
    }

    return candidates;
  }
Esempio n. 3
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/**
 * Implements a <tt>CandidateHarvester</tt> which gathers <tt>Candidate</tt>s for a specified {@link
 * Component} using Jingle Nodes as defined in XEP 278 "Jingle Relay Nodes".
 *
 * @author Sebastien Vincent
 */
public class JingleNodesHarvester extends AbstractCandidateHarvester {
  /**
   * The <tt>Logger</tt> used by the <tt>JingleNodesHarvester</tt> class and its instances for
   * logging output.
   */
  private static final Logger logger = Logger.getLogger(JingleNodesHarvester.class.getName());

  /** XMPP connection. */
  private SmackServiceNode serviceNode = null;

  /**
   * JingleNodes relay allocate two address/port couple for us. Due to the architecture of Ice4j
   * that harvest address for each component, we store the second address/port couple.
   */
  private TransportAddress localAddressSecond = null;

  /**
   * JingleNodes relay allocate two address/port couple for us. Due to the architecture of Ice4j
   * that harvest address for each component, we store the second address/port couple.
   */
  private TransportAddress relayedAddressSecond = null;

  /**
   * Constructor.
   *
   * @param serviceNode the <tt>SmackServiceNode</tt>
   */
  public JingleNodesHarvester(SmackServiceNode serviceNode) {
    this.serviceNode = serviceNode;
  }

  /**
   * Gathers Jingle Nodes candidates for all host <tt>Candidate</tt>s that are already present in
   * the specified <tt>component</tt>. This method relies on the specified <tt>component</tt> to
   * already contain all its host candidates so that it would resolve them.
   *
   * @param component the {@link Component} that we'd like to gather candidate Jingle Nodes
   *     <tt>Candidate</tt>s for
   * @return the <tt>LocalCandidate</tt>s gathered by this <tt>CandidateHarvester</tt>
   */
  @Override
  public synchronized Collection<LocalCandidate> harvest(Component component) {
    logger.info("harvest Jingle Nodes");

    Collection<LocalCandidate> candidates = new HashSet<LocalCandidate>();
    String ip = null;
    int port = -1;

    /* if we have already a candidate (RTCP) allocated, get it */
    if (localAddressSecond != null && relayedAddressSecond != null) {
      LocalCandidate candidate =
          createJingleNodesCandidate(relayedAddressSecond, component, localAddressSecond);

      // try to add the candidate to the component and then only add it to
      // the harvest not redundant (not sure how it could be red. but ...)
      if (component.addLocalCandidate(candidate)) {
        candidates.add(candidate);
      }

      localAddressSecond = null;
      relayedAddressSecond = null;
      return candidates;
    }

    XMPPConnection conn = serviceNode.getConnection();
    JingleChannelIQ ciq = null;

    if (serviceNode != null) {
      final TrackerEntry preferred = serviceNode.getPreferedRelay();

      if (preferred != null) {
        ciq = SmackServiceNode.getChannel(conn, preferred.getJid());
      }
    }

    if (ciq != null) {
      ip = ciq.getHost();
      port = ciq.getRemoteport();

      if (logger.isInfoEnabled()) {
        logger.info(
            "JN relay: " + ip + " remote port:" + port + " local port: " + ciq.getLocalport());
      }

      if (ip == null || ciq.getRemoteport() == 0) {
        logger.warn("JN relay ignored because ip was null or port 0");
        return candidates;
      }

      // Drop the scope or interface name if the relay sends it
      // along in its IPv6 address. The scope/ifname is only valid on the
      // host that owns the IP and we don't need it here.
      int scopeIndex = ip.indexOf('%');
      if (scopeIndex > 0) {
        logger.warn("Dropping scope from assumed IPv6 address " + ip);
        ip = ip.substring(0, scopeIndex);
      }

      /* RTP */
      TransportAddress relayedAddress = new TransportAddress(ip, port, Transport.UDP);
      TransportAddress localAddress = new TransportAddress(ip, ciq.getLocalport(), Transport.UDP);

      LocalCandidate local = createJingleNodesCandidate(relayedAddress, component, localAddress);

      /* RTCP */
      relayedAddressSecond = new TransportAddress(ip, port + 1, Transport.UDP);
      localAddressSecond = new TransportAddress(ip, ciq.getLocalport() + 1, Transport.UDP);

      // try to add the candidate to the component and then only add it to
      // the harvest not redundant (not sure how it could be red. but ...)
      if (component.addLocalCandidate(local)) {
        candidates.add(local);
      }
    }

    return candidates;
  }

  /**
   * Creates a new <tt>JingleNodesRelayedCandidate</tt> instance which is to represent a specific
   * <tt>TransportAddress</tt>.
   *
   * @param transportAddress the <tt>TransportAddress</tt> allocated by the relay
   * @param component the <tt>Component</tt> for which the candidate will be added
   * @param localEndPoint <tt>TransportAddress</tt> of the Jingle Nodes relay where we will send our
   *     packet.
   * @return a new <tt>JingleNodesRelayedCandidate</tt> instance which represents the specified
   *     <tt>TransportAddress</tt>
   */
  protected JingleNodesCandidate createJingleNodesCandidate(
      TransportAddress transportAddress, Component component, TransportAddress localEndPoint) {
    JingleNodesCandidate cand = null;

    try {
      cand = new JingleNodesCandidate(transportAddress, component, localEndPoint);
      IceSocketWrapper stunSocket = cand.getStunSocket(null);
      cand.getStunStack().addSocket(stunSocket);
    } catch (Throwable e) {
      logger.debug("Exception occurred when creating JingleNodesCandidate: " + e);
    }

    return cand;
  }
}