/**
* 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();
}
/**
* 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.
}
}