예제 #1
0
  /**
   * Closes the connection by setting presence to unavailable then closing the stream to the XMPP
   * server. The shutdown logic will be used during a planned disconnection or when dealing with an
   * unexpected disconnection. Unlike {@link #disconnect()} the connection's packet reader, packet
   * writer, and {@link Roster} will not be removed; thus connection's state is kept.
   *
   * @param unavailablePresence the presence packet to send during shutdown.
   */
  protected void shutdown(Presence unavailablePresence) {
    // Set presence to offline.
    PacketWriter packetWriter = this.packetWriter;
    if (packetWriter != null) {
      packetWriter.sendPacket(unavailablePresence);
    }

    this.setWasAuthenticated(authenticated);
    authenticated = false;
    connected = false;

    PacketReader packetReader = this.packetReader;
    if (packetReader != null) {
      packetReader.shutdown();
    }
    packetWriter = this.packetWriter;
    if (packetWriter != null) {
      packetWriter.shutdown();
    }
    // Wait 150 ms for processes to clean-up, then shutdown.
    try {
      Thread.sleep(150);
    } catch (Exception e) {
      // Ignore.
    }

    // Close down the readers and writers.
    Reader reader = this.reader;
    if (reader != null) {
      try {
        reader.close();
      } catch (Throwable ignore) {
        /* ignore */
      }
      this.reader = null;
    }
    Writer writer = this.writer;
    if (writer != null) {
      try {
        writer.close();
      } catch (Throwable ignore) {
        /* ignore */
      }
      this.writer = null;
    }

    try {
      socket.close();
    } catch (Exception e) {
      // Ignore.
    }

    saslAuthentication.init();
  }
예제 #2
0
  /**
   * Initializes the connection by creating a packet reader and writer and opening a XMPP stream to
   * the server.
   *
   * @throws XMPPException if establishing a connection to the server fails.
   */
  private void initConnection() throws XMPPException {
    PacketReader packetReader = this.packetReader;
    PacketWriter packetWriter = this.packetWriter;
    boolean isFirstInitialization = packetReader == null || packetWriter == null;
    usingCompression = false;

    // Set the reader and writer instance variables
    initReaderAndWriter();

    try {
      if (isFirstInitialization) {
        this.packetWriter = packetWriter = new PacketWriter(this);
        this.packetReader = packetReader = new PacketReader(this);

        // If debugging is enabled, we should start the thread that will listen for
        // all packets and then log them.
        if (config.isDebuggerEnabled()) {
          addPacketListener(debugger.getReaderListener(), null);
          if (debugger.getWriterListener() != null) {
            addPacketSendingListener(debugger.getWriterListener(), null);
          }
        }
      } else {
        packetWriter.init();
        packetReader.init();
      }

      // Start the packet writer. This will open a XMPP stream to the server
      packetWriter.startup();
      // Start the packet reader. The startup() method will block until we
      // get an opening stream packet back from server.
      packetReader.startup();

      // Make note of the fact that we're now connected.
      connected = true;

      // Start keep alive process (after TLS was negotiated - if available)
      packetWriter.startKeepAliveProcess();

      if (isFirstInitialization) {
        // Notify listeners that a new connection has been established
        for (ConnectionCreationListener listener : getConnectionCreationListeners()) {
          listener.connectionCreated(this);
        }
      } else if (!wasAuthenticated) {
        packetReader.notifyReconnection();
      }

    } catch (XMPPException ex) {
      // An exception occurred in setting up the connection. Make sure we shut down the
      // readers and writers and close the socket.

      if (packetWriter != null) {
        try {
          packetWriter.shutdown();
        } catch (Throwable ignore) {
          /* ignore */
        }
        this.packetWriter = null;
      }
      if (packetReader != null) {
        try {
          packetReader.shutdown();
        } catch (Throwable ignore) {
          /* ignore */
        }
        this.packetReader = null;
      }
      if (reader != null) {
        try {
          reader.close();
        } catch (Throwable ignore) {
          /* ignore */
        }
        reader = null;
      }
      if (writer != null) {
        try {
          writer.close();
        } catch (Throwable ignore) {
          /* ignore */
        }
        writer = null;
      }
      if (socket != null) {
        try {
          socket.close();
        } catch (Exception e) {
          /* ignore */
        }
        socket = null;
      }
      this.setWasAuthenticated(authenticated);
      chatManager = null;
      authenticated = false;
      connected = false;

      throw ex; // Everything stoppped. Now throw the exception.
    }
  }