Add JingleTransportSession classes

smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/IncomingJingleFileOffer.java

@@ -29,8 +29,8 @@ import org.jivesoftware.smackx.jingle.JingleTransportMethodManager;
 import org.jivesoftware.smackx.jingle.Role;
 import org.jivesoftware.smackx.jingle.element.Jingle;
 import org.jivesoftware.smackx.jingle.element.JingleContent;
-import org.jivesoftware.smackx.jingle.element.JingleContentTransport;
 import org.jivesoftware.smackx.jingle.transports.JingleTransportInitiationCallback;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
 import org.jivesoftware.smackx.jingle_filetransfer.callback.IncomingFileOfferCallback;
 import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransfer;
 
@@ -49,8 +49,7 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
         pending,
         sent_transport_replace,
         active,
-        terminated,
+        terminated
-        ;
     }
 
     private State state;
@@ -78,9 +77,8 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
         this.creator = content.getCreator();
         this.file = (JingleFileTransfer) content.getDescription();
         this.name = content.getName();
-        this.transport = content.getJingleTransport();
-        this.transportManager = tm.getTransportManager(initiate);
 
+        JingleTransportManager<?> transportManager = tm.getTransportManager(initiate);
         if (transportManager == null) {
             //Try fallback.
             pendingSessionInitiate = initiate;
@@ -94,13 +92,16 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
                 return jutil.createAck(initiate);
             }
 
-            transport = transportManager.createTransport(getInitiator());
+            transportSession = transportManager.transportSession(this);
             jutil.sendTransportReplace(initiate.getFrom().asFullJidOrThrow(), initiate.getInitiator(),
-                    initiate.getSid(), creator, name, transport);
+                    initiate.getSid(), creator, name, transportSession.createTransport());
             state = State.sent_transport_replace;
             return jutil.createAck(initiate);
         }
 
+        transportSession = transportManager.transportSession(this);
+        transportSession.setRemoteTransport(initiate.getContents().get(0).getJingleTransport());
+
         JingleFileTransferManager.getInstanceFor(connection).notifyIncomingFileOffer(initiate, this);
         state = State.pending;
         return jutil.createAck(initiate);
@@ -115,15 +116,15 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
         }
 
         JingleFileTransferManager.getInstanceFor(connection).notifyIncomingFileOffer(pendingSessionInitiate, this);
-        transport = transportAccept.getContents().get(0).getJingleTransport();
+        transportSession.setRemoteTransport(transportAccept.getContents().get(0).getJingleTransport());
         state = State.pending;
         return jutil.createAck(transportAccept);
     }
 
     @Override
-    public void acceptIncomingFileOffer(Jingle request, final File target) {
+    public void acceptIncomingFileOffer(final Jingle request, final File target) {
         LOGGER.log(Level.INFO, "Client accepted incoming file offer. Try to start receiving.");
-        if (transportManager == null) {
+        if (transportSession == null) {
             //Unsupported transport
             LOGGER.log(Level.WARNING, "Unsupported Transport method.");
             try {
@@ -134,13 +135,12 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
             return;
         }
 
-        final JingleContentTransport transport = transportManager.createTransport(request);
+        queued.add(threadPool.submit(new Runnable() {
-        tasks.add(new Runnable() {
             @Override
             public void run() {
                 try {
                     state = State.active;
-                    transportManager.initiateIncomingSession(getInitiator(), transport, new JingleTransportInitiationCallback() {
+                    transportSession.initiateIncomingSession(new JingleTransportInitiationCallback() {
                         @Override
                         public void onSessionInitiated(BytestreamSession bytestreamSession) {
                             receivingThread = new ReceivingThread(bytestreamSession, file, target);
@@ -152,12 +152,12 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
 
                         }
                     });
-                    jutil.sendSessionAccept(getInitiator(), sid, creator, name, JingleContent.Senders.initiator, file, transport);
+                    jutil.sendSessionAccept(getInitiator(), sid, creator, name, JingleContent.Senders.initiator, file, transportSession.createTransport());
                 } catch (SmackException.NotConnectedException | SmackException.NoResponseException | XMPPException.XMPPErrorException | InterruptedException e) {
                     LOGGER.log(Level.SEVERE, "Could not send session-accept: " + e, e);
                 }
             }
-        });
+        }));
     }
 
     @Override

smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileRequest.java

@@ -34,7 +34,7 @@ public class JingleFileRequest extends JingleFileTransferSession {
 
     public static JingleFileRequest createOutgoingFileRequest(XMPPConnection connection, FullJid recipient) {
         return new JingleFileRequest(connection, connection.getUser().asFullJidOrThrow(), recipient, Role.initiator,
-                JingleManager.randomSid());
+                JingleManager.randomId());
     }
 
     public static JingleFileRequest createIncomingFileRequest(XMPPConnection connection, Jingle request) {

smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileTransferSession.java

@@ -21,8 +21,6 @@ import org.jivesoftware.smackx.jingle.JingleSession;
 import org.jivesoftware.smackx.jingle.JingleUtil;
 import org.jivesoftware.smackx.jingle.Role;
 import org.jivesoftware.smackx.jingle.element.JingleContent;
-import org.jivesoftware.smackx.jingle.element.JingleContentTransport;
-import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
 import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransfer;
 
 import org.jxmpp.jid.FullJid;
@@ -44,8 +42,6 @@ public abstract class JingleFileTransferSession extends JingleSession {
     protected JingleContent.Creator creator;
     protected String name;
     protected JingleFileTransfer file;
-    protected JingleContentTransport transport;
-    protected JingleTransportManager<?> transportManager;
 
     private final Type type;
 
@@ -75,4 +71,9 @@ public abstract class JingleFileTransferSession extends JingleSession {
     public boolean isReceiver() {
         return (isRequest() && isInitiator()) || (isOffer() && isResponder());
     }
+
+    @Override
+    public XMPPConnection getConnection() {
+        return connection;
+    }
 }

smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/OutgoingJingleFileOffer.java

@@ -48,8 +48,8 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
         pending,
         sent_transport_replace,
         active,
-        terminated,
+        terminated
-        ;}
+    }
 
     private Thread sendingThread;
     private File source;
@@ -62,13 +62,13 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
     }
 
     public OutgoingJingleFileOffer(XMPPConnection connection, FullJid recipient) {
-        this(connection, recipient, JingleManager.randomSid());
+        this(connection, recipient, JingleManager.randomId());
     }
 
     public void send(File file) throws InterruptedException, XMPPException.XMPPErrorException,
             SmackException.NotConnectedException, SmackException.NoResponseException {
         source = file;
-        String contentName = JingleManager.randomSid();
+        String contentName = JingleManager.randomId();
         JingleFileTransfer transfer = JingleFileTransferManager.fileTransferFromFile(file);
 
         initiateFileOffer(transfer, JingleContent.Creator.initiator, contentName);
@@ -79,18 +79,18 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
             throw new IllegalStateException("This session is not fresh.");
         }
 
-        transportManager = JingleTransportMethodManager.getInstanceFor(connection)
+        JingleTransportManager<?> transportManager = JingleTransportMethodManager.getInstanceFor(connection)
                 .getBestAvailableTransportManager();
 
         if (transportManager == null) {
             throw new IllegalStateException("There must be at least one workable transport method.");
         }
 
-        transport = transportManager.createTransport(getResponder());
+        transportSession = transportManager.transportSession(this);
 
         state = State.pending;
 
-        jutil.sendSessionInitiateFileOffer(getResponder(), getSessionId(), creator, name, file, transport);
+        jutil.sendSessionInitiateFileOffer(getResponder(), getSessionId(), creator, name, file, transportSession.createTransport());
     }
 
     @Override
@@ -103,10 +103,10 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
 
         LOGGER.log(Level.INFO, "Session was accepted. Initiate Bytestream.");
         state = State.active;
-        tasks.add(new Runnable() {
+        queued.add(threadPool.submit(new Runnable() {
             @Override
             public void run() {
-                transportManager.initiateOutgoingSession(getResponder(), transport, new JingleTransportInitiationCallback() {
+                transportSession.initiateOutgoingSession(new JingleTransportInitiationCallback() {
                     @Override
                     public void onSessionInitiated(final BytestreamSession session) {
                         LOGGER.log(Level.INFO, "BytestreamSession initiated. Start transfer.");
@@ -120,7 +120,7 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
                     }
                 });
             }
-        });
+        }));
 
         return jutil.createAck(sessionAccept);
     }
@@ -147,7 +147,7 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
         final JingleTransportManager<?> replacementManager = JingleTransportMethodManager.getInstanceFor(connection)
                 .getTransportManager(transportReplace);
 
-        tasks.add(new Runnable() {
+        queued.add(threadPool.submit(new Runnable() {
             @Override
             public void run() {
                 try {
@@ -155,7 +155,7 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
                         LOGGER.log(Level.INFO, "Accept transport-replace.");
                         jutil.sendTransportAccept(transportReplace.getFrom().asFullJidOrThrow(),
                                 transportReplace.getInitiator(), transportReplace.getSid(), creator, name,
-                                replacementManager.createTransport(getResponder()));
+                                transportSession.createTransport());
                     } else {
                         LOGGER.log(Level.INFO, "Unsupported transport. Reject transport-replace.");
                         jutil.sendTransportReject(transportReplace.getFrom().asFullJidOrThrow(), transportReplace.getInitiator(),
@@ -165,7 +165,7 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
                     LOGGER.log(Level.SEVERE, "Help me please!", e);
                 }
             }
-        });
+        }));
 
         return jutil.createAck(transportReplace);
     }

smack-extensions/src/main/java/org/jivesoftware/smackx/bytestreams/socks5/Socks5Client.java

@@ -46,7 +46,7 @@ import org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream.StreamHost;
  * 
  * @author Henning Staib
  */
-class Socks5Client {
+public class Socks5Client {
 
     private static final Logger LOGGER = Logger.getLogger(Socks5Client.class.getName());
 

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/FullJidAndSessionId.java

@@ -30,6 +30,14 @@ public class FullJidAndSessionId {
         this.sessionId = sessionId;
     }
 
+    public FullJid getFullJid() {
+        return fullJid;
+    }
+
+    public String getSessionId() {
+        return sessionId;
+    }
+
     @Override
     public int hashCode() {
         int hashCode = 31 * fullJid.hashCode();

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleManager.java

@@ -34,6 +34,7 @@ import org.jivesoftware.smackx.jingle.element.JingleAction;
 import org.jivesoftware.smackx.jingle.element.JingleContent;
 import org.jivesoftware.smackx.jingle.element.JingleContentDescription;
 import org.jivesoftware.smackx.jingle.transports.jingle_ibb.JingleIBBTransportManager;
+import org.jivesoftware.smackx.jingle.transports.jingle_s5b.JingleS5BTransportManager;
 
 import org.jxmpp.jid.FullJid;
 
@@ -102,7 +103,7 @@ public final class JingleManager extends Manager {
         //Register transports.
         JingleTransportMethodManager transportMethodManager = JingleTransportMethodManager.getInstanceFor(connection);
         transportMethodManager.registerTransportManager(JingleIBBTransportManager.getInstanceFor(connection));
-        //transportMethodManager.registerTransportManager(JingleS5BTransportManager.getInstanceFor(connection));
+        transportMethodManager.registerTransportManager(JingleS5BTransportManager.getInstanceFor(connection));
     }
 
     public JingleHandler registerDescriptionHandler(String namespace, JingleHandler handler) {
@@ -119,7 +120,7 @@ public final class JingleManager extends Manager {
         return jingleSessionHandlers.remove(fullJidAndSessionId);
     }
 
-    public static String randomSid() {
+    public static String randomId() {
         return StringUtils.randomString(24);
     }
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleSession.java

@@ -16,14 +16,18 @@
  */
 package org.jivesoftware.smackx.jingle;
 
-import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.ArrayList;
-import java.util.logging.Level;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPConnection;
 import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportSession;
 
 import org.jxmpp.jid.FullJid;
 
@@ -38,38 +42,9 @@ public abstract class JingleSession implements JingleSessionHandler {
 
     protected final String sid;
 
-    protected final ConcurrentLinkedQueue<Runnable> tasks = new ConcurrentLinkedQueue<Runnable>() {
+    protected ExecutorService threadPool = Executors.newSingleThreadExecutor();
-        private static final long serialVersionUID = 1L;
+    protected ArrayList<Future<?>> queued = new ArrayList<>();
-
+    protected JingleTransportSession<?> transportSession;
-        @Override
-        public boolean add(Runnable runnable) {
-            synchronized (tasks) {
-                LOGGER.log(Level.INFO, "Add task.");
-                boolean b = super.add(runnable);
-                tasks.notify();
-                return b;
-            }
-        }
-    };
-
-    private final Thread worker = new Thread() {
-        @Override
-        public void run() {
-            synchronized (tasks) {
-                while (true) {
-                    try {
-                        tasks.wait();
-                        while (!tasks.isEmpty()) {
-                            LOGGER.log(Level.INFO, "Run task.");
-                            tasks.poll().run();
-                        }
-                    } catch (InterruptedException e) {
-                        LOGGER.log(Level.WARNING, "Interrupted.");
-                    }
-                }
-            }
-        }
-    };
 
     public JingleSession(FullJid initiator, FullJid responder, Role role, String sid) {
         if (role == Role.initiator) {
@@ -81,7 +56,6 @@ public abstract class JingleSession implements JingleSessionHandler {
         }
         this.sid = sid;
         this.role = role;
-        worker.start();
     }
 
     public FullJid getInitiator() {
@@ -100,6 +74,14 @@ public abstract class JingleSession implements JingleSessionHandler {
         return role == Role.responder;
     }
 
+    public FullJid getRemote() {
+        return remote;
+    }
+
+    public FullJid getLocal() {
+        return local;
+    }
+
     public String getSessionId() {
         return sid;
     }
@@ -108,6 +90,14 @@ public abstract class JingleSession implements JingleSessionHandler {
         return new FullJidAndSessionId(remote, sid);
     }
 
+    public JingleTransportSession<?> getTransportSession() {
+        return transportSession;
+    }
+
+    protected void setTransportSession(JingleTransportSession<?> transportSession) {
+        this.transportSession = transportSession;
+    }
+
     @Override
     public int hashCode() {
         int hashCode = 31 + getInitiator().hashCode();
@@ -153,7 +143,7 @@ public abstract class JingleSession implements JingleSessionHandler {
             case transport_accept:
                 return handleTransportAccept(jingle);
             case transport_info:
-                return handleTransportInfo(jingle);
+                return transportSession.handleTransportInfo(jingle);
             case session_initiate:
                 return handleSessionInitiate(jingle);
             case transport_reject:
@@ -218,10 +208,6 @@ public abstract class JingleSession implements JingleSessionHandler {
         return IQ.createResultIQ(transportAccept);
     }
 
-    protected IQ handleTransportInfo(Jingle transportInfo) {
-        return IQ.createResultIQ(transportInfo);
-    }
-
     protected IQ handleTransportReplace(Jingle transportReplace)
             throws InterruptedException, XMPPException.XMPPErrorException,
             SmackException.NotConnectedException, SmackException.NoResponseException {
@@ -232,4 +218,6 @@ public abstract class JingleSession implements JingleSessionHandler {
         return IQ.createResultIQ(transportReject);
     }
 
+    public abstract XMPPConnection getConnection();
+
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleTransportMethodManager.java

@@ -36,14 +36,6 @@ public final class JingleTransportMethodManager extends Manager {
 
     private static final WeakHashMap<XMPPConnection, JingleTransportMethodManager> INSTANCES = new WeakHashMap<>();
 
-    static {
-        ClassLoader classLoader = JingleTransportMethodManager.class.getClassLoader();
-        String[] knownTransports = new String[] {
-                "org.jivesoftware.smackx.jingle.transports.jingle_s5b.JingleS5BTransportManager",
-                "org.jivesoftware.smackx.jingle.transports.jingle_ibb.JingleIBBTransportManager"
-                };
-        //TODO: Load dynamically.
-    }
     private final HashMap<String, JingleTransportManager<?>> transportManagers = new HashMap<>();
 
     private static final String[] transportPreference = new String[] {
@@ -68,10 +60,17 @@ public final class JingleTransportMethodManager extends Manager {
         transportManagers.put(manager.getNamespace(), manager);
     }
 
+    public static JingleTransportManager<?> getTransportManager(XMPPConnection connection, String namespace) {
+        return getInstanceFor(connection).getTransportManager(namespace);
+    }
+
     public JingleTransportManager<?> getTransportManager(String namespace) {
         return transportManagers.get(namespace);
     }
 
+    public static JingleTransportManager<?> getTransportManager(XMPPConnection connection, Jingle request) {
+        return getInstanceFor(connection).getTransportManager(request);
+    }
     public JingleTransportManager<?> getTransportManager(Jingle request) {
 
         JingleContent content = request.getContents().get(0);
@@ -87,10 +86,10 @@ public final class JingleTransportMethodManager extends Manager {
         return getTransportManager(transport.getNamespace());
     }
 
-    /**
+    public JingleTransportManager<?> getBestAvailableTransportManager(XMPPConnection connection) {
-     * TODO: Find better solution.
+        return getInstanceFor(connection).getBestAvailableTransportManager();
-     * @return
+    }
-     */
+
     public JingleTransportManager<?> getBestAvailableTransportManager() {
         JingleTransportManager<?> tm;
         for (String ns : transportPreference) {

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/JingleTransportManager.java

@@ -16,22 +16,22 @@
  */
 package org.jivesoftware.smackx.jingle.transports;
 
+import org.jivesoftware.smack.ConnectionListener;
 import org.jivesoftware.smack.XMPPConnection;
-import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle.JingleSession;
 import org.jivesoftware.smackx.jingle.element.JingleContentTransport;
 
-import org.jxmpp.jid.FullJid;
-
 /**
  * Manager for a JingleTransport method.
  * @param <D> JingleContentTransport.
  */
-public abstract class JingleTransportManager<D extends JingleContentTransport> {
+public abstract class JingleTransportManager<D extends JingleContentTransport> implements ConnectionListener {
 
     private final XMPPConnection connection;
 
     public JingleTransportManager(XMPPConnection connection) {
         this.connection = connection;
+        connection.addConnectionListener(this);
     }
 
     public XMPPConnection getConnection() {
@@ -40,12 +40,36 @@ public abstract class JingleTransportManager<D extends JingleContentTransport> {
 
     public abstract String getNamespace();
 
-    public abstract D createTransport(FullJid recipient);
+    public abstract JingleTransportSession<D> transportSession(JingleSession jingleSession);
 
-    public abstract D createTransport(Jingle request);
 
-    public abstract void initiateOutgoingSession(FullJid remote, JingleContentTransport transport, JingleTransportInitiationCallback callback);
+    @Override
+    public void connected(XMPPConnection connection) {
 
-    public abstract void initiateIncomingSession(FullJid remote, JingleContentTransport transport, JingleTransportInitiationCallback callback);
+    }
 
+    @Override
+    public void connectionClosed() {
+
+    }
+
+    @Override
+    public void connectionClosedOnError(Exception e) {
+
+    }
+
+    @Override
+    public void reconnectionSuccessful() {
+
+    }
+
+    @Override
+    public void reconnectingIn(int seconds) {
+
+    }
+
+    @Override
+    public void reconnectionFailed(Exception e) {
+
+    }
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/JingleTransportNegotiator.java

@@ -1,24 +0,0 @@
-/**
- *
- * Copyright 2017 Paul Schaub
- *
- * 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.transports;
-
-/**
- * Created by vanitas on 20.06.17.
- */
-public interface JingleTransportNegotiator {
-
-}

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/JingleTransportSession.java

@@ -0,0 +1,67 @@
+/**
+ *
+ * Copyright 2017 Paul Schaub
+ *
+ * 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.transports;
+
+import java.lang.ref.WeakReference;
+
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smackx.jingle.JingleSession;
+import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle.element.JingleContent;
+import org.jivesoftware.smackx.jingle.element.JingleContentTransport;
+
+/**
+ * Created by vanitas on 20.06.17.
+ */
+public abstract class JingleTransportSession<T extends JingleContentTransport> {
+    protected final WeakReference<JingleSession> jingleSession;
+    protected JingleContentTransport remoteTransport;
+    protected JingleContentTransport localTransport;
+
+    public JingleTransportSession(JingleSession session) {
+        this.jingleSession = new WeakReference<>(session);
+    }
+
+    public abstract T createTransport();
+
+    public void processJingle(Jingle jingle) {
+        if (jingle.getContents().size() == 0) {
+            return;
+        }
+
+        JingleContent content = jingle.getContents().get(0);
+        JingleContentTransport t = content.getJingleTransport();
+
+        if (t != null && t.getNamespace().equals(getNamespace())) {
+            remoteTransport = t;
+        }
+    }
+
+    public abstract void initiateOutgoingSession(JingleTransportInitiationCallback callback);
+
+    public abstract void initiateIncomingSession(JingleTransportInitiationCallback callback);
+
+    public abstract String getNamespace();
+
+    public abstract IQ handleTransportInfo(Jingle transportInfo);
+
+    public void setRemoteTransport(JingleContentTransport remoteTransport) {
+        this.remoteTransport = remoteTransport;
+    }
+
+    public abstract JingleTransportManager<T> transportManager();
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_ibb/JingleIBBTransportManager.java

@@ -18,23 +18,14 @@ package org.jivesoftware.smackx.jingle.transports.jingle_ibb;
 
 import java.util.WeakHashMap;
 
-import org.jivesoftware.smack.SmackException;
 import org.jivesoftware.smack.XMPPConnection;
-import org.jivesoftware.smack.XMPPException;
+import org.jivesoftware.smackx.jingle.JingleSession;
-import org.jivesoftware.smackx.bytestreams.BytestreamListener;
-import org.jivesoftware.smackx.bytestreams.BytestreamRequest;
-import org.jivesoftware.smackx.bytestreams.BytestreamSession;
-import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager;
-import org.jivesoftware.smackx.jingle.element.Jingle;
-import org.jivesoftware.smackx.jingle.element.JingleContentTransport;
 import org.jivesoftware.smackx.jingle.provider.JingleContentProviderManager;
-import org.jivesoftware.smackx.jingle.transports.JingleTransportInitiationCallback;
 import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportSession;
 import org.jivesoftware.smackx.jingle.transports.jingle_ibb.element.JingleIBBTransport;
 import org.jivesoftware.smackx.jingle.transports.jingle_ibb.provider.JingleIBBTransportProvider;
 
-import org.jxmpp.jid.FullJid;
-
 /**
  * Manager for Jingle InBandBytestream transports (XEP-0261).
  */
@@ -62,51 +53,12 @@ public final class JingleIBBTransportManager extends JingleTransportManager<Jing
     }
 
     @Override
-    public JingleIBBTransport createTransport(FullJid recipient) {
+    public JingleTransportSession<JingleIBBTransport> transportSession(JingleSession jingleSession) {
-        return new JingleIBBTransport();
+        return new JingleIBBTransportSession(jingleSession);
     }
 
     @Override
-    public JingleIBBTransport createTransport(Jingle request) {
+    public void authenticated(XMPPConnection connection, boolean resumed) {
-        JingleIBBTransport rTransport = (JingleIBBTransport) request.getContents().get(0).getJingleTransport();
+        //Nothing to do.
-        return new JingleIBBTransport(rTransport.getBlockSize(), rTransport.getSessionId());
-    }
-
-    @Override
-    public void initiateOutgoingSession(FullJid remote, JingleContentTransport transport, JingleTransportInitiationCallback callback) {
-        JingleIBBTransport ibbTransport = (JingleIBBTransport) transport;
-        BytestreamSession session;
-
-        try {
-            session = InBandBytestreamManager.getByteStreamManager(getConnection())
-                    .establishSession(remote, ibbTransport.getSessionId());
-            callback.onSessionInitiated(session);
-        } catch (SmackException.NoResponseException | InterruptedException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
-            callback.onException(e);
-        }
-    }
-
-    @Override
-    public void initiateIncomingSession(final FullJid remote, final JingleContentTransport transport, final JingleTransportInitiationCallback callback) {
-        final JingleIBBTransport ibbTransport = (JingleIBBTransport) transport;
-
-        InBandBytestreamManager.getByteStreamManager(getConnection()).addIncomingBytestreamListener(new BytestreamListener() {
-            @Override
-            public void incomingBytestreamRequest(BytestreamRequest request) {
-                if (request.getFrom().asFullJidIfPossible().equals(remote)
-                        && request.getSessionID().equals(ibbTransport.getSessionId())) {
-
-                    BytestreamSession session;
-
-                    try {
-                        session = request.accept();
-                    } catch (InterruptedException | SmackException | XMPPException.XMPPErrorException e) {
-                        callback.onException(e);
-                        return;
-                    }
-                    callback.onSessionInitiated(session);
-                }
-            }
-        });
     }
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_ibb/JingleIBBTransportSession.java

@@ -0,0 +1,117 @@
+/**
+ *
+ * Copyright 2017 Paul Schaub
+ *
+ * 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.transports.jingle_ibb;
+
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPException;
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smackx.bytestreams.BytestreamListener;
+import org.jivesoftware.smackx.bytestreams.BytestreamRequest;
+import org.jivesoftware.smackx.bytestreams.BytestreamSession;
+import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager;
+import org.jivesoftware.smackx.jingle.JingleSession;
+import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportInitiationCallback;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportSession;
+import org.jivesoftware.smackx.jingle.transports.jingle_ibb.element.JingleIBBTransport;
+
+public class JingleIBBTransportSession extends JingleTransportSession<JingleIBBTransport> {
+
+    private final JingleIBBTransportManager transportManager;
+
+    public JingleIBBTransportSession(JingleSession session) {
+        super(session);
+        transportManager = JingleIBBTransportManager.getInstanceFor(session.getConnection());
+    }
+
+    @Override
+    public JingleIBBTransport createTransport() {
+
+        if (remoteTransport == null) {
+            return new JingleIBBTransport();
+        } else {
+            JingleIBBTransport existing = (JingleIBBTransport) remoteTransport;
+            return new JingleIBBTransport(existing.getBlockSize(), existing.getSessionId());
+        }
+
+    }
+
+    @Override
+    public void initiateOutgoingSession(JingleTransportInitiationCallback callback) {
+        if (jingleSession.get() == null) {
+            callback.onException(new NullPointerException("Lost reference to JingleSession."));
+            return;
+        }
+
+        JingleIBBTransport ibbTransport = (JingleIBBTransport) remoteTransport;
+        BytestreamSession session;
+
+        try {
+            session = InBandBytestreamManager.getByteStreamManager(jingleSession.get().getConnection())
+                    .establishSession(jingleSession.get().getRemote(), ibbTransport.getSessionId());
+            callback.onSessionInitiated(session);
+        } catch (SmackException.NoResponseException | InterruptedException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
+            callback.onException(e);
+        }
+    }
+
+    @Override
+    public void initiateIncomingSession(final JingleTransportInitiationCallback callback) {
+
+        if (jingleSession.get() == null) {
+            callback.onException(new NullPointerException("Lost reference to JingleSession."));
+        }
+
+        final JingleIBBTransport ibbTransport = (JingleIBBTransport) remoteTransport;
+
+        InBandBytestreamManager.getByteStreamManager(jingleSession.get().getConnection()).addIncomingBytestreamListener(new BytestreamListener() {
+            @Override
+            public void incomingBytestreamRequest(BytestreamRequest request) {
+                if (request.getFrom().asFullJidIfPossible().equals(jingleSession.get().getRemote())
+                        && request.getSessionID().equals(ibbTransport.getSessionId())) {
+
+                    BytestreamSession session;
+
+                    try {
+                        session = request.accept();
+                    } catch (InterruptedException | SmackException | XMPPException.XMPPErrorException e) {
+                        callback.onException(e);
+                        return;
+                    }
+                    callback.onSessionInitiated(session);
+                }
+            }
+        });
+    }
+
+    @Override
+    public String getNamespace() {
+        return transportManager.getNamespace();
+    }
+
+    @Override
+    public IQ handleTransportInfo(Jingle transportInfo) {
+        return IQ.createResultIQ(transportInfo);
+        //TODO
+    }
+
+    @Override
+    public JingleTransportManager<JingleIBBTransport> transportManager() {
+        return JingleIBBTransportManager.getInstanceFor(jingleSession.get().getConnection());
+    }
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/JingleS5BTransportManager.java

@@ -17,7 +17,6 @@
 package org.jivesoftware.smackx.jingle.transports.jingle_s5b;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.WeakHashMap;
@@ -29,19 +28,14 @@ import org.jivesoftware.smack.XMPPConnection;
 import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smackx.bytestreams.socks5.Socks5BytestreamManager;
-import org.jivesoftware.smackx.bytestreams.socks5.Socks5Utils;
 import org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream;
-import org.jivesoftware.smackx.jingle.JingleManager;
+import org.jivesoftware.smackx.jingle.JingleSession;
-import org.jivesoftware.smackx.jingle.element.Jingle;
-import org.jivesoftware.smackx.jingle.element.JingleContentTransport;
 import org.jivesoftware.smackx.jingle.provider.JingleContentProviderManager;
-import org.jivesoftware.smackx.jingle.transports.JingleTransportInitiationCallback;
 import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportSession;
 import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransport;
-import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransportCandidate;
 import org.jivesoftware.smackx.jingle.transports.jingle_s5b.provider.JingleS5BTransportProvider;
 
-import org.jxmpp.jid.FullJid;
 import org.jxmpp.jid.Jid;
 
 /**
@@ -53,6 +47,9 @@ public final class JingleS5BTransportManager extends JingleTransportManager<Jing
 
     private static final WeakHashMap<XMPPConnection, JingleS5BTransportManager> INSTANCES = new WeakHashMap<>();
 
+    private List<Bytestream.StreamHost> localStreamHosts = null;
+    private List<Bytestream.StreamHost> availableStreamHosts = null;
+
     private JingleS5BTransportManager(XMPPConnection connection) {
         super(connection);
         JingleContentProviderManager.addJingleContentTransportProvider(getNamespace(), new JingleS5BTransportProvider());
@@ -73,67 +70,35 @@ public final class JingleS5BTransportManager extends JingleTransportManager<Jing
     }
 
     @Override
-    public JingleS5BTransport createTransport(FullJid recipient) {
+    public JingleTransportSession<JingleS5BTransport> transportSession(JingleSession jingleSession) {
-        return createTransport(recipient, JingleManager.randomSid(), Bytestream.Mode.tcp);
+        return new JingleS5BTransportSession(jingleSession);
     }
 
-    @Override
+    private List<Bytestream.StreamHost> queryAvailableStreamHosts() throws XMPPException.XMPPErrorException, SmackException.NotConnectedException, InterruptedException, SmackException.NoResponseException {
-    public JingleS5BTransport createTransport(Jingle request) {
-        FullJid remote = request.getFrom().asFullJidIfPossible();
-        JingleS5BTransport received = (JingleS5BTransport) request.getContents().get(0).getJingleTransport();
-
-        return createTransport(remote, received.getStreamId(), received.getMode());
-    }
-
-    private JingleS5BTransport createTransport(FullJid remote, String sid, Bytestream.Mode mode) {
-        JingleS5BTransport.Builder builder = JingleS5BTransport.getBuilder();
-        List<Bytestream.StreamHost> localStreams = getLocalStreamHosts();
-        List<Bytestream.StreamHost> availableStreams;
-        try {
-            availableStreams = getAvailableStreamHosts();
-        } catch (XMPPException.XMPPErrorException | SmackException.NoResponseException | InterruptedException | SmackException.NotConnectedException e) {
-            LOGGER.log(Level.WARNING, "Could not determine available StreamHosts: ", e);
-            availableStreams = Collections.emptyList();
-        }
-
-        for (Bytestream.StreamHost host : localStreams) {
-            JingleS5BTransportCandidate candidate = new JingleS5BTransportCandidate(host, 100);
-            builder.addTransportCandidate(candidate);
-        }
-
-        for (Bytestream.StreamHost host : availableStreams) {
-            JingleS5BTransportCandidate candidate = new JingleS5BTransportCandidate(host, 0);
-            builder.addTransportCandidate(candidate);
-        }
-
-        builder.setStreamId(sid);
-        builder.setMode(mode);
-        builder.setDestinationAddress(Socks5Utils.createDigest(sid, getConnection().getUser().asFullJidOrThrow(), remote));
-        return builder.build();
-    }
-
-
-    @Override
-    public void initiateOutgoingSession(FullJid remote, JingleContentTransport transport, JingleTransportInitiationCallback callback) {
-
-    }
-
-    @Override
-    public void initiateIncomingSession(FullJid remote, JingleContentTransport transport, JingleTransportInitiationCallback callback) {
-
-    }
-
-    public List<Bytestream.StreamHost> getAvailableStreamHosts() throws XMPPException.XMPPErrorException, SmackException.NotConnectedException, InterruptedException, SmackException.NoResponseException {
         Socks5BytestreamManager s5m = Socks5BytestreamManager.getBytestreamManager(getConnection());
         List<Jid> proxies = s5m.determineProxies();
         return determineStreamHostInfo(proxies);
     }
 
-    public List<Bytestream.StreamHost> getLocalStreamHosts() {
+    private List<Bytestream.StreamHost> queryLocalStreamHosts() {
         return Socks5BytestreamManager.getBytestreamManager(getConnection())
                 .getLocalStreamHost();
     }
 
+    public List<Bytestream.StreamHost> getAvailableStreamHosts() throws XMPPException.XMPPErrorException, SmackException.NotConnectedException, InterruptedException, SmackException.NoResponseException {
+        if (availableStreamHosts == null) {
+            availableStreamHosts = queryAvailableStreamHosts();
+        }
+        return availableStreamHosts;
+    }
+
+    public List<Bytestream.StreamHost> getLocalStreamHosts() {
+        if (localStreamHosts == null) {
+            localStreamHosts = queryLocalStreamHosts();
+        }
+        return localStreamHosts;
+    }
+
     public List<Bytestream.StreamHost> determineStreamHostInfo(List<Jid> proxies) {
         XMPPConnection connection = getConnection();
         List<Bytestream.StreamHost> streamHosts = new ArrayList<>();
@@ -155,4 +120,15 @@ public final class JingleS5BTransportManager extends JingleTransportManager<Jing
 
         return streamHosts;
     }
+
+
+    @Override
+    public void authenticated(XMPPConnection connection, boolean resumed) {
+        if (!resumed) try {
+            localStreamHosts = queryLocalStreamHosts();
+            availableStreamHosts = queryAvailableStreamHosts();
+        } catch (InterruptedException | SmackException.NoResponseException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
+            LOGGER.log(Level.WARNING, "Could not query available StreamHosts: " + e, e);
+        }
+    }
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/JingleS5BTransportSession.java

@@ -0,0 +1,141 @@
+/**
+ *
+ * Copyright 2017 Paul Schaub
+ *
+ * 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.transports.jingle_s5b;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.TimeoutException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPException;
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smackx.bytestreams.socks5.Socks5Client;
+import org.jivesoftware.smackx.bytestreams.socks5.Socks5Utils;
+import org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream;
+import org.jivesoftware.smackx.jingle.JingleManager;
+import org.jivesoftware.smackx.jingle.JingleSession;
+import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle.element.JingleContentTransportCandidate;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportInitiationCallback;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
+import org.jivesoftware.smackx.jingle.transports.JingleTransportSession;
+import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransport;
+import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransportCandidate;
+
+/**
+ * LOL.
+ */
+public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BTransport> {
+    private static final Logger LOGGER = Logger.getLogger(JingleS5BTransportSession.class.getName());
+    private final JingleS5BTransportManager transportManager;
+
+    public JingleS5BTransportSession(JingleSession jingleSession) {
+        super(jingleSession);
+        transportManager = JingleS5BTransportManager.getInstanceFor(jingleSession.getConnection());
+    }
+
+    @Override
+    public JingleS5BTransport createTransport() {
+        if (localTransport != null) {
+            return (JingleS5BTransport) localTransport;
+        }
+
+        return createTransport(JingleManager.randomId(), Bytestream.Mode.tcp);
+    }
+
+    private JingleS5BTransport createTransport(String sid, Bytestream.Mode mode) {
+        JingleS5BTransport.Builder builder = JingleS5BTransport.getBuilder();
+
+        for (Bytestream.StreamHost host : transportManager.getLocalStreamHosts()) {
+            JingleS5BTransportCandidate candidate = new JingleS5BTransportCandidate(host, 100);
+            builder.addTransportCandidate(candidate);
+        }
+
+        List<Bytestream.StreamHost> availableStreamHosts = null;
+
+        try {
+            availableStreamHosts = transportManager.getAvailableStreamHosts();
+        } catch (XMPPException.XMPPErrorException | SmackException.NoResponseException | InterruptedException | SmackException.NotConnectedException e) {
+            LOGGER.log(Level.WARNING, "Could not get available StreamHosts: " + e, e);
+        }
+
+        for (Bytestream.StreamHost host : availableStreamHosts != null ?
+                availableStreamHosts : Collections.<Bytestream.StreamHost>emptyList()) {
+            JingleS5BTransportCandidate candidate = new JingleS5BTransportCandidate(host, 0);
+            builder.addTransportCandidate(candidate);
+        }
+
+        builder.setStreamId(sid);
+        builder.setMode(mode);
+        builder.setDestinationAddress(Socks5Utils.createDigest(sid, jingleSession.get().getLocal(), jingleSession.get().getRemote()));
+        return builder.build();
+    }
+
+    @Override
+    public void initiateOutgoingSession(JingleTransportInitiationCallback callback) {
+        JingleS5BTransport receivedTransport = (JingleS5BTransport) remoteTransport;
+
+        Socket socket = null;
+        JingleS5BTransportCandidate workedForUs = null;
+
+        for (JingleContentTransportCandidate c : receivedTransport.getCandidates()) {
+            JingleS5BTransportCandidate candidate = (JingleS5BTransportCandidate) c;
+            Bytestream.StreamHost streamHost = candidate.getStreamHost();
+
+            String address = streamHost.getAddress();
+
+            try {
+                Socks5Client socks5Client = new Socks5Client(streamHost, receivedTransport.getDestinationAddress());
+                socket = socks5Client.getSocket(10 * 1000);
+                workedForUs = candidate;
+
+            } catch (IOException | XMPPException | InterruptedException | TimeoutException | SmackException e) {
+                LOGGER.log(Level.WARNING, "Could not connect to remotes address " + address + " with dstAddr "
+                        + receivedTransport.getDestinationAddress());
+            }
+
+            if (socket != null) {
+
+            }
+        }
+    }
+
+    @Override
+    public void initiateIncomingSession(JingleTransportInitiationCallback callback) {
+
+    }
+
+    @Override
+    public String getNamespace() {
+        return transportManager.getNamespace();
+    }
+
+    @Override
+    public IQ handleTransportInfo(Jingle transportInfo) {
+        return null;
+    }
+
+    @Override
+    public JingleTransportManager<JingleS5BTransport> transportManager() {
+        return JingleS5BTransportManager.getInstanceFor(jingleSession.get().getConnection());
+    }
+
+}

smack-extensions/src/test/java/org/jivesoftware/smackx/jingle/JingleUtilTest.java

@@ -0,0 +1,102 @@
+/**
+ *
+ * Copyright 2017 Paul Schaub
+ *
+ * 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 org.jivesoftware.smack.DummyConnection;
+import org.jivesoftware.smack.XMPPConnection;
+import org.jivesoftware.smack.test.util.SmackTestSuite;
+import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle.element.JingleContent;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.jxmpp.jid.FullJid;
+import org.jxmpp.jid.impl.JidCreate;
+import org.jxmpp.stringprep.XmppStringprepException;
+
+/**
+ * Test the JingleUtil class.
+ */
+public class JingleUtilTest extends SmackTestSuite {
+
+    private XMPPConnection connection;
+    private JingleUtil jutil;
+
+    @Before
+    public void setup() {
+        connection = new DummyConnection(
+                DummyConnection.getDummyConfigurationBuilder()
+                .setUsernameAndPassword("romeo@montague.lit",
+                "iluvJulibabe13").build());
+        jutil = new JingleUtil(connection);
+    }
+
+    @Test
+    public void sessionInitiateTest() throws XmppStringprepException {
+        FullJid romeo = connection.getUser().asFullJidOrThrow();
+        FullJid juliet = JidCreate.fullFrom("juliet@capulet.example/yn0cl4bnw0yr3vym");
+
+        String sid = "851ba2";
+        String contentName = "a-file-offer";
+        Jingle jingle = jutil.createSessionInitiate(juliet, sid,
+                JingleContent.Creator.initiator, contentName, JingleContent.Senders.initiator, null, null);
+
+
+
+        String expected =
+                "<iq from='" + romeo.toString() + "' " +
+                    "id='nzu25s8' " +
+                    "to='juliet@capulet.example/yn0cl4bnw0yr3vym' " +
+                    "type='set'>" +
+                        "<jingle xmlns='urn:xmpp:jingle:1' " +
+                        "action='session-initiate' " +
+                        "initiator='romeo@montague.example/dr4hcr0st3lup4c' " +
+                        "sid='851ba2'>" +
+                            "<content creator='initiator' name='a-file-offer' senders='initiator'>" +
+                                "<description xmlns='urn:xmpp:jingle:apps:file-transfer:5'>" +
+                                    "<file>" +
+                                        "<date>1969-07-21T02:56:15Z</date>" +
+                                        "<desc>This is a test. If this were a real file...</desc>" +
+                                        "<media-type>text/plain</media-type>" +
+                                        "<name>test.txt</name>" +
+                                        "<range/>" +
+                                        "<size>6144</size>" +
+                                        "<hash xmlns='urn:xmpp:hashes:2' " +
+                                            "algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash>" +
+                                    "</file>" +
+                                "</description>" +
+                            "<transport xmlns='urn:xmpp:jingle:transports:s5b:1' " +
+                            "mode='tcp' " +
+                            "sid='vj3hs98y'> " +
+                            "<candidate cid='hft54dqy' " +
+                            "host='192.168.4.1' " +
+                            "jid='romeo@montague.example/dr4hcr0st3lup4c' " +
+                            "port='5086' " +
+                            "priority='8257636' " +
+                            "type='direct'/>" +
+                                "<candidate cid='hutr46fe' " +
+                                "host='24.24.24.1' " +
+                                "jid='romeo@montague.example/dr4hcr0st3lup4c' " +
+                                "port='5087' " +
+                                "priority='8258636' " +
+                                "type='direct'/>" +
+                            "</transport>" +
+                        "</content>" +
+                    "</jingle>" +
+                "</iq>";
+    }
+}