/**
* $RCSfile: JingleManager.java,v $
* $Revision: 1.4 $
* $Date: 2007/07/17 22:13:16 $
*
* Copyright 2003-2005 Jive Software.
*
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smackx.jingle;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.jivesoftware.smack.ConnectionCreationListener;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.RosterListener;
import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.provider.ProviderManager;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smackx.ServiceDiscoveryManager;
import org.jivesoftware.smackx.jingle.listeners.CreatedJingleSessionListener;
import org.jivesoftware.smackx.jingle.listeners.JingleListener;
import org.jivesoftware.smackx.jingle.listeners.JingleSessionListener;
import org.jivesoftware.smackx.jingle.listeners.JingleSessionRequestListener;
import org.jivesoftware.smackx.jingle.media.JingleMediaManager;
import org.jivesoftware.smackx.jingle.media.PayloadType;
import org.jivesoftware.smackx.jingle.nat.BasicTransportManager;
import org.jivesoftware.smackx.jingle.nat.TransportCandidate;
import org.jivesoftware.smackx.jingle.nat.TransportResolver;
import org.jivesoftware.smackx.packet.DiscoverInfo;
import org.jivesoftware.smackx.packet.Jingle;
import org.jivesoftware.smackx.provider.JingleProvider;
/**
* Jingle is a session establishment protocol defined in (XEP-0166).
* It defines a framework for negotiating and managing out-of-band ( data that is send and receive through other connection than XMPP connection) data sessions over XMPP.
* With this protocol you can setup VOIP Calls, Video Streaming, File transfers and whatever out-of-band session based transmission.
* <p/>
* To create a Jingle Session you need a Transport method and a Payload type.
* <p/>
* A transport method is how it will trasmit and receive network packets. Transport MUST have one or more candidates.
* A transport candidate is an IP Address with a defined port, that other party must send data to.
* <p/>
* A supported payload type, is the data encoding format that the jmf will be transmitted.
* For instance an Audio Payload "GSM".
* <p/>
* A Jingle session negociates a payload type and a pair of transport candidates.
* Which means that when a Jingle Session is establhished you will have two defined transport candidates with addresses
* and a defined Payload type.
* In other words, you will have two IP address with their respective ports, and a Codec type defined.
* <p/>
* The JingleManager is a facade built upon Jabber Jingle (XEP-166) to allow the
* use of Jingle. This implementation allows the user to simply
* use this class for setting the Jingle parameters, create and receive Jingle Sessions.
* <p/>
* In order to use the Jingle, the user must provide a
* TransportManager that will handle the resolution of potential IP addresses taht can be used to transport the streaming (jmf).
* This TransportManager can be initialized with several default resolvers,
* including a fixed solver that can be used when the address and port are know
* in advance.
* This API have ready to use Transport Managers, for instance: BasicTransportManager, STUNTransportManager, BridgedTransportManager.
* <p/>
* You should also especify a JingleMediaManager if you want that JingleManager assume Media control
* Using a JingleMediaManager implementation is the easier way to implement a Jingle Application.
* <p/>
* Otherwise before creating an outgoing connection, the user must create jingle session
* listeners that will be called when different events happen. The most
* important event is <i>sessionEstablished()</i>, that will be called when all
* the negotiations are finished, providing the payload type for the
* transmission as well as the remote and local addresses and ports for the
* communication. See JingleSessionListener for a complete list of events that can be
* observed.
* <p/>
* This is an example of how to use the JingleManager:
* <i>This example implements a Jingle VOIP Call between two users.</i>
* <p/>
* <pre>
* <p/>
* To wait for an Incoming Jingle Session:
* <p/>
* try {
* <p/>
* // Connect to a XMPP Server
* Connection x1 = new XMPPConnection("xmpp.com");
* x1.connect();
* x1.login("juliet", "juliet");
* <p/>
* // Create a JingleManager using a BasicResolver
* final JingleManager jm1 = new JingleManager(
* x1, new BasicTransportManager());
* <p/>
* // Create a JingleMediaManager. In this case using Jingle Audio Media API
* JingleMediaManager jingleMediaManager = new AudioMediaManager();
* <p/>
* // Set the JingleMediaManager
* jm1.setMediaManager(jingleMediaManager);
* <p/>
* // Listen for incoming calls
* jm1.addJingleSessionRequestListener(new JingleSessionRequestListener() {
* public void sessionRequested(JingleSessionRequest request) {
* <p/>
* try {
* // Accept the call
* IncomingJingleSession session = request.accept();
* <p/>
* <p/>
* // Start the call
* session.start();
* } catch (XMPPException e) {
* e.printStackTrace();
* }
* <p/>
* }
* });
* <p/>
* Thread.sleep(15000);
* <p/>
* } catch (Exception e) {
* e.printStackTrace();
* }
* <p/>
* To create an Outgoing Jingle Session:
* <p/>
* try {
* <p/>
* // Connect to a XMPP Server
* Connection x0 = new XMPPConnection("xmpp.com");
* x0.connect();
* x0.login("romeo", "romeo");
* <p/>
* // Create a JingleManager using a BasicResolver
* final JingleManager jm0 = new JingleManager(
* x0, new BasicTransportManager());
* <p/>
* // Create a JingleMediaManager. In this case using Jingle Audio Media API
* JingleMediaManager jingleMediaManager = new AudioMediaManager(); // Using Jingle Media API
* <p/>
* // Set the JingleMediaManager
* jm0.setMediaManager(jingleMediaManager);
* <p/>
* // Create a new Jingle Call with a full JID
* OutgoingJingleSession js0 = jm0.createOutgoingJingleSession("juliet@xmpp.com/Smack");
* <p/>
* // Start the call
* js0.start();
* <p/>
* Thread.sleep(10000);
* js0.terminate();
* <p/>
* Thread.sleep(3000);
* <p/>
* } catch (Exception e) {
* e.printStackTrace();
* }
* </pre>
*
* @author Thiago Camargo
* @author Alvaro Saurin
* @author Jeff Williams
* @see JingleListener
* @see TransportResolver
* @see JingleSession
* @see JingleSession
* @see JingleMediaManager
* @see BasicTransportManager , STUNTransportManager, BridgedTransportManager, TransportResolver, BridgedResolver, ICEResolver, STUNResolver and BasicResolver.
*/
public class JingleManager implements JingleSessionListener {
private static final SmackLogger LOGGER = SmackLogger.getLogger(JingleManager.class);
// non-static
final List<JingleSession> jingleSessions = new ArrayList<JingleSession>();
// Listeners for manager events (ie, session requests...)
private List<JingleSessionRequestListener> jingleSessionRequestListeners;
// Listeners for created JingleSessions
private List<CreatedJingleSessionListener> creationListeners = new ArrayList<CreatedJingleSessionListener>();
// The XMPP connection
private Connection connection;
// The Media Managers
private List<JingleMediaManager> jingleMediaManagers;
/**
* Default constructor with a defined Connection, Transport Resolver and a Media Manager
* If a fully implemented JingleMediaSession is entered, JingleManager manage Jingle signalling and jmf
*
* @param connection XMPP Connection to be used
* @param jingleMediaManager an implemeted JingleMediaManager to be used.
*/
public JingleManager(Connection connection, List<JingleMediaManager> jingleMediaManagers) {
this.connection = connection;
this.jingleMediaManagers = jingleMediaManagers;
connection.getRoster().addRosterListener(new RosterListener() {
public void entriesAdded(Collection<String> addresses) {
}
public void entriesUpdated(Collection<String> addresses) {
}
public void entriesDeleted(Collection<String> addresses) {
}
public void presenceChanged(Presence presence) {
if (!presence.isAvailable()) {
String xmppAddress = presence.getFrom();
JingleSession aux = null;
for (JingleSession jingleSession : jingleSessions) {
if (jingleSession.getInitiator().equals(xmppAddress) || jingleSession.getResponder().equals(xmppAddress)) {
aux = jingleSession;
}
}
if (aux != null)
try {
aux.terminate();
} catch (XMPPException e) {
e.printStackTrace();
}
}
}
});
}
/**
* Setup the jingle system to let the remote clients know we support Jingle.
* (This used to be a static part of construction. The problem is a remote client might
* attempt a Jingle connection to us after we've created a Connection, but before we've
* setup an instance of a JingleManager. We will appear to not support Jingle. With the new
* method you just call it once and all new connections will report Jingle support.)
*/
public static void setJingleServiceEnabled() {
ProviderManager providerManager = ProviderManager.getInstance();
providerManager.addIQProvider("jingle", "urn:xmpp:tmp:jingle", new JingleProvider());
// Enable the Jingle support on every established connection
// The ServiceDiscoveryManager class should have been already
// initialized
Connection.addConnectionCreationListener(new ConnectionCreationListener() {
public void connectionCreated(Connection connection) {
JingleManager.setServiceEnabled(connection, true);
}
});
}
/**
* Enables or disables the Jingle support on a given connection.
* <p/>
* <p/>
* Before starting any Jingle jmf session, check that the user can handle
* it. Enable the Jingle support to indicate that this client handles Jingle
* messages.
*
* @param connection the connection where the service will be enabled or
* disabled
* @param enabled indicates if the service will be enabled or disabled
*/
public synchronized static void setServiceEnabled(Connection connection, boolean enabled) {
if (isServiceEnabled(connection) == enabled) {
return;
}
if (enabled) {
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(Jingle.NAMESPACE);
} else {
ServiceDiscoveryManager.getInstanceFor(connection).removeFeature(Jingle.NAMESPACE);
}
}
/**
* Returns true if the Jingle support is enabled for the given connection.
*
* @param connection the connection to look for Jingle support
* @return a boolean indicating if the Jingle support is enabled for the
* given connection
*/
public static boolean isServiceEnabled(Connection connection) {
return ServiceDiscoveryManager.getInstanceFor(connection).includesFeature(Jingle.NAMESPACE);
}
/**
* Returns true if the specified user handles Jingle messages.
*
* @param connection the connection to use to perform the service discovery
* @param userID the user to check. A fully qualified xmpp ID, e.g.
* jdoe@example.com
* @return a boolean indicating whether the specified user handles Jingle
* messages
*/
public static boolean isServiceEnabled(Connection connection, String userID) {
try {
DiscoverInfo result = ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(userID);
return result.containsFeature(Jingle.NAMESPACE);
} catch (XMPPException e) {
e.printStackTrace();
return false;
}
}
/**
* Get the Media Managers of this Jingle Manager
*
* @return
*/
public List<JingleMediaManager> getMediaManagers() {
return jingleMediaManagers;
}
/**
* Set the Media Managers of this Jingle Manager
*
* @param jingleMediaManager JingleMediaManager to be used for open, close, start and stop jmf streamings
*/
public void setMediaManagers(List<JingleMediaManager> jingleMediaManagers) {
this.jingleMediaManagers = jingleMediaManagers;
}
/**
* Add a Jingle session request listenerJingle to listen to incoming session
* requests.
*
* @param jingleSessionRequestListener an implemented JingleSessionRequestListener
* @see #removeJingleSessionRequestListener(JingleSessionRequestListener)
* @see JingleListener
*/
public synchronized void addJingleSessionRequestListener(final JingleSessionRequestListener jingleSessionRequestListener) {
if (jingleSessionRequestListener != null) {
if (jingleSessionRequestListeners == null) {
initJingleSessionRequestListeners();
}
synchronized (jingleSessionRequestListeners) {
jingleSessionRequestListeners.add(jingleSessionRequestListener);
}
}
}
/**
* Removes a Jingle session listenerJingle.
*
* @param jingleSessionRequestListener The jingle session jingleSessionRequestListener to be removed
* @see #addJingleSessionRequestListener(JingleSessionRequestListener)
* @see JingleListener
*/
public void removeJingleSessionRequestListener(JingleSessionRequestListener jingleSessionRequestListener) {
if (jingleSessionRequestListeners == null) {
return;
}
synchronized (jingleSessionRequestListeners) {
jingleSessionRequestListeners.remove(jingleSessionRequestListener);
}
}
/**
* Adds a CreatedJingleSessionListener.
* This listener will be called when a session is created by the JingleManager instance.
*
* @param createdJingleSessionListener
*/
public void addCreationListener(CreatedJingleSessionListener createdJingleSessionListener) {
this.creationListeners.add(createdJingleSessionListener);
}
/**
* Removes a CreatedJingleSessionListener.
* This listener will be called when a session is created by the JingleManager instance.
*
* @param createdJingleSessionListener
*/
public void removeCreationListener(CreatedJingleSessionListener createdJingleSessionListener) {
this.creationListeners.remove(createdJingleSessionListener);
}
/**
* Trigger CreatedJingleSessionListeners that a session was created.
*
* @param jingleSession
*/
public void triggerSessionCreated(JingleSession jingleSession) {
jingleSessions.add(jingleSession);
jingleSession.addListener(this);
for (CreatedJingleSessionListener createdJingleSessionListener : creationListeners) {
try {
createdJingleSessionListener.sessionCreated(jingleSession);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void sessionEstablished(PayloadType pt, TransportCandidate rc, TransportCandidate lc, JingleSession jingleSession) {
}
public void sessionDeclined(String reason, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
jingleSession.close();
LOGGER.error("Declined:" + reason);
}
public void sessionRedirected(String redirection, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
}
public void sessionClosed(String reason, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
}
public void sessionClosedOnError(XMPPException e, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
}
public void sessionMediaReceived(JingleSession jingleSession, String participant) {
// Do Nothing
}
/**
* Register the listenerJingles, waiting for a Jingle packet that tries to
* establish a new session.
*/
private void initJingleSessionRequestListeners() {
PacketFilter initRequestFilter = new PacketFilter() {
// Return true if we accept this packet
public boolean accept(Packet pin) {
if (pin instanceof IQ) {
IQ iq = (IQ) pin;
if (iq.getType().equals(IQ.Type.SET)) {
if (iq instanceof Jingle) {
Jingle jin = (Jingle) pin;
if (jin.getAction().equals(JingleActionEnum.SESSION_INITIATE)) {
return true;
}
}
}
}
return false;
}
};
jingleSessionRequestListeners = new ArrayList<JingleSessionRequestListener>();
// Start a packet listener for session initiation requests
connection.addPacketListener(new PacketListener() {
public void processPacket(Packet packet) {
triggerSessionRequested((Jingle) packet);
}
}, initRequestFilter);
}
/**
* Disconnect all Jingle Sessions
*/
public void disconnectAllSessions() {
List<JingleSession> sessions = jingleSessions.subList(0, jingleSessions.size());
for (JingleSession jingleSession : sessions)
try {
jingleSession.terminate();
} catch (XMPPException e) {
e.printStackTrace();
}
sessions.clear();
}
/**
* Activates the listenerJingles on a Jingle session request.
*
* @param initJin the packet that must be passed to the jingleSessionRequestListener.
*/
void triggerSessionRequested(Jingle initJin) {
JingleSessionRequestListener[] jingleSessionRequestListeners = null;
// Make a synchronized copy of the listenerJingles
synchronized (this.jingleSessionRequestListeners) {
jingleSessionRequestListeners = new JingleSessionRequestListener[this.jingleSessionRequestListeners.size()];
this.jingleSessionRequestListeners.toArray(jingleSessionRequestListeners);
}
// ... and let them know of the event
JingleSessionRequest request = new JingleSessionRequest(this, initJin);
for (int i = 0; i < jingleSessionRequestListeners.length; i++) {
jingleSessionRequestListeners[i].sessionRequested(request);
}
}
// Session creation
/**
* Creates an Jingle session to start a communication with another user.
*
* @param responder the fully qualified jabber ID with resource of the other
* user.
* @param payloadTypes list of supported payload types
* @return The session on which the negotiation can be run.
*/
public JingleSession createOutgoingJingleSession(String responder) throws XMPPException {
if (responder == null || StringUtils.parseName(responder).length() <= 0 || StringUtils.parseServer(responder).length() <= 0
|| StringUtils.parseResource(responder).length() <= 0) {
throw new IllegalArgumentException("The provided user id was not fully qualified");
}
JingleSession session = new JingleSession(connection, (JingleSessionRequest) null, connection.getUser(), responder, jingleMediaManagers);
triggerSessionCreated(session);
return session;
}
/**
* Creates an Jingle session to start a communication with another user.
*
* @param responder the fully qualified jabber ID with resource of the other
* user.
* @return the session on which the negotiation can be run.
*/
// public OutgoingJingleSession createOutgoingJingleSession(String responder) throws XMPPException {
// if (this.getMediaManagers() == null) return null;
// return createOutgoingJingleSession(responder, this.getMediaManagers());
// }
/**
* When the session request is acceptable, this method should be invoked. It
* will create an JingleSession which allows the negotiation to procede.
*
* @param request the remote request that is being accepted.
* @param payloadTypes the list of supported Payload types that can be accepted
* @return the session which manages the rest of the negotiation.
*/
public JingleSession createIncomingJingleSession(JingleSessionRequest request) throws XMPPException {
if (request == null) {
throw new NullPointerException("Received request cannot be null");
}
JingleSession session = new JingleSession(connection, request, request.getFrom(), connection.getUser(), jingleMediaManagers);
triggerSessionCreated(session);
return session;
}
/**
* When the session request is acceptable, this method should be invoked. It
* will create an JingleSession which allows the negotiation to procede.
* This method use JingleMediaManager to select the supported Payload types.
*
* @param request the remote request that is being accepted.
* @return the session which manages the rest of the negotiation.
*/
// IncomingJingleSession createIncomingJingleSession(JingleSessionRequest request) throws XMPPException {
// if (request == null) {
// throw new NullPointerException("JingleMediaManager is not defined");
// }
// if (jingleMediaManager != null)
// return createIncomingJingleSession(request, jingleMediaManager.getPayloads());
//
// return createIncomingJingleSession(request, null);
// }
/**
* Get a session with the informed JID. If no session is found, return null.
*
* @param jid
* @return
*/
public JingleSession getSession(String jid) {
for (JingleSession jingleSession : jingleSessions) {
if (jingleSession.getResponder().equals(jid)) {
return jingleSession;
}
}
return null;
}
}