Pass events down to contents

smack-experimental/src/main/java/org/jivesoftware/smackx/jft/JingleFileTransferManager.java

@@ -166,7 +166,7 @@ public final class JingleFileTransferManager extends Manager implements JingleDe
     }
 
     @Override
-    public void notifyContentAdd(JingleContent content) {
+    public void notifyContentAdd(JingleSession session, JingleContent content) {
         notifyTransfer((JingleFileTransfer) content.getDescription());
     }
 }

smack-experimental/src/main/java/org/jivesoftware/smackx/jft/adapter/package-info.java

@@ -0,0 +1,22 @@
+/**
+ *
+ * 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.
+ */
+
+/**
+ * Smack's API for <a href="https://xmpp.org/extensions/xep-0234.html">XEP-0234: Jingle File Transfer</a>.
+ * Adapters.
+ */
+package org.jivesoftware.smackx.jft.adapter;

smack-experimental/src/main/java/org/jivesoftware/smackx/jft/controller/IncomingFileOfferController.java

@@ -19,9 +19,13 @@ package org.jivesoftware.smackx.jft.controller;
 import java.io.File;
 import java.util.concurrent.Future;
 
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPConnection;
+import org.jivesoftware.smack.XMPPException;
+
 /**
  * Created by vanitas on 27.07.17.
  */
 public interface IncomingFileOfferController extends JingleFileTransferController {
-    Future<Void> accept(File target);
+    Future<Void> accept(XMPPConnection connection, File target) throws InterruptedException, XMPPException.XMPPErrorException, SmackException.NotConnectedException, SmackException.NoResponseException;
 }

smack-experimental/src/main/java/org/jivesoftware/smackx/jft/internal/JingleIncomingFileOffer.java

@@ -23,6 +23,9 @@ import java.util.concurrent.Future;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPConnection;
+import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smackx.bytestreams.BytestreamSession;
 import org.jivesoftware.smackx.jft.controller.IncomingFileOfferController;
 import org.jivesoftware.smackx.jft.element.JingleFileTransferChildElement;
@@ -69,10 +72,12 @@ public class JingleIncomingFileOffer extends AbstractJingleFileOffer<RemoteFile>
     }
 
     @Override
-    public Future<Void> accept(File target) {
+    public Future<Void> accept(XMPPConnection connection, File target)
+            throws InterruptedException, XMPPException.XMPPErrorException, SmackException.NotConnectedException,
+            SmackException.NoResponseException {
         JingleSession session = getParent().getParent();
         if (session.getSessionState() == JingleSession.SessionState.pending) {
-            //session.accept();
+            session.accept(connection);
         }
 
         return null;

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

@@ -28,5 +28,5 @@ public interface JingleDescriptionManager {
 
     void notifySessionInitiate(JingleSession session);
 
-    void notifyContentAdd(JingleContent content);
+    void notifyContentAdd(JingleSession session, JingleContent content);
 }

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

@@ -27,6 +27,7 @@ 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.smack.util.StringUtils;
 import org.jivesoftware.smackx.bytestreams.BytestreamSession;
 import org.jivesoftware.smackx.jingle.Callback;
@@ -62,6 +63,69 @@ public class JingleContent implements JingleTransportCallback {
     private final List<Callback> callbacks = Collections.synchronizedList(new ArrayList<Callback>());
     private final Set<String> transportBlacklist = Collections.synchronizedSet(new HashSet<String>());
 
+    public IQ handleJingleRequest(JingleElement request, XMPPConnection connection) {
+        switch (request.getAction()) {
+            case content_modify:
+                return handleContentModify(request, connection);
+            case description_info:
+                return handleDescriptionInfo(request, connection);
+            case security_info:
+                return handleSecurityInfo(request, connection);
+            case session_info:
+                return handleSessionInfo(request, connection);
+            case transport_accept:
+                return handleTransportAccept(request, connection);
+            case transport_info:
+                return handleTransportInfo(request, connection);
+            case transport_reject:
+                return handleTransportReject(request, connection);
+            case transport_replace:
+                return handleTransportReplace(request, connection);
+            default:
+                throw new AssertionError("Illegal jingle action: " + request.getAction() + " is not allowed here.");
+        }
+    }
+
+    public IQ handleSessionAccept(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleContentModify(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleDescriptionInfo(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public void handleContentRemove(JingleSession session, XMPPConnection connection) {
+
+    }
+
+    public IQ handleSecurityInfo(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleSessionInfo(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleTransportAccept(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleTransportInfo(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleTransportReject(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
+    public IQ handleTransportReplace(JingleElement request, XMPPConnection connection) {
+        return IQ.createResultIQ(request);
+    }
+
     public enum STATE {
         pending_accept,
         pending_transmission_start,
@@ -77,9 +141,9 @@ public class JingleContent implements JingleTransportCallback {
     }
 
     public JingleContent(JingleDescription<?> description, JingleTransport<?> transport, JingleSecurity<?> security, String name, String disposition, JingleContentElement.Creator creator, JingleContentElement.Senders senders) {
-        this.description = description;
+        setDescription(description);
-        this.transport = transport;
+        setTransport(transport);
-        this.security = security;
+        setSecurity(security);
         this.name = name;
         this.disposition = disposition;
         this.creator = creator;
@@ -178,7 +242,7 @@ public class JingleContent implements JingleTransportCallback {
     }
 
     public void setDescription(JingleDescription<?> description) {
-        if (this.description != description) {
+        if (description != null && this.description != description) {
             this.description = description;
             description.setParent(this);
         }
@@ -189,7 +253,7 @@ public class JingleContent implements JingleTransportCallback {
     }
 
     public void setTransport(JingleTransport<?> transport) {
-        if (this.transport != transport) {
+        if (transport != null && this.transport != transport) {
             this.transport = transport;
             transport.setParent(this);
         }
@@ -200,7 +264,7 @@ public class JingleContent implements JingleTransportCallback {
     }
 
     public void setSecurity(JingleSecurity<?> security) {
-        if (this.security != security) {
+        if (security != null && this.security != security) {
             this.security = security;
             security.setParent(this);
         }
@@ -266,14 +330,17 @@ public class JingleContent implements JingleTransportCallback {
         connection.createStanzaCollectorAndSend(transportReplace).nextResultOrThrow();
     }
 
-    public void onContentAccept(XMPPConnection connection)
+    public void handleContentAccept(JingleElement request, XMPPConnection connection) {
-            throws SmackException.NotConnectedException, InterruptedException {
         //Establish transport
+        try {
             if (isReceiving()) {
                 getTransport().establishIncomingBytestreamSession(connection, this, getParent());
             } else if (isSending()) {
                 getTransport().establishOutgoingBytestreamSession(connection, this, getParent());
             }
+        } catch (SmackException.NotConnectedException | InterruptedException e) {
+            LOGGER.log(Level.SEVERE, "Error establishing connection: " + e, e);
+        }
     }
 
     public static String randomName() {

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

@@ -21,7 +21,6 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -33,12 +32,8 @@ import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smack.util.Async;
 import org.jivesoftware.smackx.jingle.JingleDescriptionManager;
 import org.jivesoftware.smackx.jingle.JingleManager;
-import org.jivesoftware.smackx.jingle.adapter.JingleTransportAdapter;
 import org.jivesoftware.smackx.jingle.element.JingleAction;
-import org.jivesoftware.smackx.jingle.element.JingleContentDescriptionElement;
 import org.jivesoftware.smackx.jingle.element.JingleContentElement;
-import org.jivesoftware.smackx.jingle.element.JingleContentTransportElement;
-import org.jivesoftware.smackx.jingle.element.JingleContentTransportInfoElement;
 import org.jivesoftware.smackx.jingle.element.JingleElement;
 import org.jivesoftware.smackx.jingle.element.JingleReasonElement;
 import org.jivesoftware.smackx.jingle.exception.UnsupportedDescriptionException;
@@ -55,6 +50,7 @@ public class JingleSession {
     private static final Logger LOGGER = Logger.getLogger(JingleSession.class.getName());
 
     private final ConcurrentHashMap<String, JingleContent> contents = new ConcurrentHashMap<>();
+    private final ConcurrentHashMap<String, JingleContent> proposedContents = new ConcurrentHashMap<>();
     private final JingleManager jingleManager;
 
     private final FullJid initiator, responder;
@@ -82,36 +78,6 @@ public class JingleSession {
         this.sessionState = SessionState.fresh;
     }
 
-    public void addContent(JingleContent content) {
-        contents.put(content.getName(), content);
-        content.setParent(this);
-    }
-
-    public void addContent(JingleContentElement content)
-            throws UnsupportedSecurityException, UnsupportedTransportException, UnsupportedDescriptionException {
-        addContent(JingleContent.fromElement(content));
-    }
-
-    public ConcurrentHashMap<String, JingleContent> getContents() {
-        return contents;
-    }
-
-    public JingleContent getContent(String name) {
-        return contents.get(name);
-    }
-
-    public JingleContent getSoleContentOrThrow() {
-        if (contents.isEmpty()) {
-            return null;
-        }
-
-        if (contents.size() > 1) {
-            throw new IllegalStateException();
-        }
-
-        return contents.values().iterator().next();
-    }
-
     public static JingleSession fromSessionInitiate(JingleManager manager, JingleElement initiate)
             throws UnsupportedSecurityException, UnsupportedDescriptionException, UnsupportedTransportException {
         if (initiate.getAction() != JingleAction.session_initiate) {
@@ -131,10 +97,23 @@ public class JingleSession {
     }
 
     public void initiate(XMPPConnection connection) throws SmackException.NotConnectedException, InterruptedException, XMPPException.XMPPErrorException, SmackException.NoResponseException {
+        if (this.sessionState != SessionState.fresh) {
+            throw new IllegalStateException("Session is not in fresh state.");
+        }
+
         connection.createStanzaCollectorAndSend(createSessionInitiate()).nextResultOrThrow();
         this.sessionState = SessionState.pending;
     }
 
+    public void accept(XMPPConnection connection) throws SmackException.NotConnectedException, InterruptedException, XMPPException.XMPPErrorException, SmackException.NoResponseException {
+        if (this.sessionState != SessionState.pending) {
+            throw new IllegalStateException("Session is not in pending state.");
+        }
+
+        connection.createStanzaCollectorAndSend(createSessionAccept()).nextResultOrThrow();
+        this.sessionState = SessionState.active;
+    }
+
     public JingleElement createSessionInitiate() {
         if (role != Role.initiator) {
             throw new IllegalStateException("Sessions role is not initiator.");
@@ -148,87 +127,81 @@ public class JingleSession {
         return JingleElement.createSessionInitiate(getInitiator(), getResponder(), getSessionId(), contentElements);
     }
 
+    public JingleElement createSessionAccept() {
+        if (role != Role.responder) {
+            throw new IllegalStateException("Sessions role is not responder.");
+        }
+
+        List<JingleContentElement> contentElements = new ArrayList<>();
+        for (JingleContent c : contents.values()) {
+            contentElements.add(c.getElement());
+        }
+
+        return JingleElement.createSessionAccept(getInitiator(), getResponder(), getSessionId(), contentElements);
+    }
+
     public IQ handleJingleRequest(JingleElement request) {
         switch (request.getAction()) {
+            case content_modify:
+            case description_info:
+            case security_info:
+            case session_info:
+            case transport_accept:
+            case transport_info:
+            case transport_reject:
+            case transport_replace:
+                return getSoleAffectedContentOrThrow(request).handleJingleRequest(request, jingleManager.getConnection());
             case content_accept:
                 return handleContentAccept(request);
             case content_add:
                 return handleContentAdd(request);
-            case content_modify:
-                return handleContentModify(request);
             case content_reject:
                 return handleContentReject(request);
             case content_remove:
                 return handleContentRemove(request);
-            case description_info:
-                return handleDescriptionInfo(request);
-            case session_info:
-                return handleSessionInfo(request);
-            case security_info:
-                return handleSecurityInfo(request);
             case session_accept:
                 return handleSessionAccept(request);
-            case transport_accept:
-                return handleTransportAccept(request);
-            case transport_info:
-                return handleTransportInfo(request);
             case session_initiate:
                 return handleSessionInitiate(request);
-            case transport_reject:
-                return handleTransportReject(request);
             case session_terminate:
                 return handleSessionTerminate(request);
-            case transport_replace:
-                return handleTransportReplace(request);
             default:
-                throw new AssertionError("Unknown Jingle Action enum! " + request.getAction());
+                throw new AssertionError("Illegal jingle action: " + request.getAction());
         }
     }
 
-    private IQ handleTransportReplace(final JingleElement request) {
+    /* ############## Processed in this class ############## */
+
+    /**
+     * Handle incoming session-accept stanza.
+     * @param request session-accept stanza.
+     * @return result.
+     */
+    private IQ handleSessionAccept(final JingleElement request) {
+        this.sessionState = SessionState.active;
+
+        for (final JingleContent content : contents.values()) {
             Async.go(new Runnable() {
                 @Override
                 public void run() {
-                List<JingleContentElement> affectedContents = request.getContents();
+                    content.handleSessionAccept(request, jingleManager.getConnection());
-                List<JingleElement> responses = new ArrayList<>();
-
-                for (JingleContentElement affected : affectedContents) {
-                    JingleContent content = contents.get(affected.getName());
-                    JingleContentTransportElement newTransport = affected.getTransport();
-                    Set<String> blacklist = content.getTransportBlacklist();
-
-                    // Proposed transport method might already be on the blacklist (eg. because of previous failures)
-                    if (blacklist.contains(newTransport.getNamespace())) {
-                        responses.add(JingleElement.createTransportReject(getInitiator(), getPeer(), getSessionId(),
-                                content.getCreator(), content.getName(), newTransport));
-                        continue;
-                    }
-
-                    JingleTransportAdapter<?> transportAdapter = JingleManager.getJingleTransportAdapter(
-                            newTransport.getNamespace());
-                    // This might be an unknown transport.
-                    if (transportAdapter == null) {
-                        responses.add(JingleElement.createTransportReject(getInitiator(), getPeer(), getSessionId(),
-                                content.getCreator(), content.getName(), newTransport));
-                        continue;
-                    }
-
-                    //Otherwise, when all went well so far, accept the transport-replace
-                    content.setTransport(JingleManager.getJingleTransportAdapter(newTransport.getNamespace())
-                            .transportFromElement(newTransport));
-                    responses.add(JingleElement.createTransportAccept(getInitiator(), getPeer(), getSessionId(),
-                            content.getCreator(), content.getName(), newTransport));
-                }
-
-                for (JingleElement response : responses) {
-                    try {
-                        jingleManager.getConnection().createStanzaCollectorAndSend(response).nextResultOrThrow();
-                    } catch (SmackException.NoResponseException | XMPPException.XMPPErrorException | InterruptedException | SmackException.NotConnectedException e) {
-                        LOGGER.log(Level.SEVERE, "Could not send response to transport-replace: " + e, e);
-                    }
-                }
                 }
             });
+        }
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleSessionInitiate(JingleElement request) {
+        JingleDescription<?> description = getSoleContentOrThrow().getDescription();
+        JingleDescriptionManager descriptionManager = jingleManager.getDescriptionManager(description.getNamespace());
+
+        if (descriptionManager == null) {
+            LOGGER.log(Level.WARNING, "Unsupported description type: " + description.getNamespace());
+            return JingleElement.createSessionTerminate(getPeer(), getSessionId(), JingleReasonElement.Reason.unsupported_applications);
+        }
+
+        descriptionManager.notifySessionInitiate(this);
 
         return IQ.createResultIQ(request);
     }
@@ -247,168 +220,193 @@ public class JingleSession {
         return IQ.createResultIQ(request);
     }
 
-    private IQ handleTransportReject(JingleElement request) {
+    private IQ handleContentAccept(final JingleElement request) {
-        HashMap<JingleContentElement, JingleContent> affectedContents = getAffectedContents(request);
+        for (JingleContentElement a : request.getContents()) {
-        for (JingleContent c : affectedContents.values()) {
+            final JingleContent accepted = proposedContents.get(a.getName());
 
-        }
+            if (accepted == null) {
-        return null;
+                throw new AssertionError("Illegal content name!");
             }
 
-    private IQ handleSessionInitiate(JingleElement request) {
+            proposedContents.remove(accepted.getName());
-        JingleDescription<?> description = getSoleContentOrThrow().getDescription();
+            contents.put(accepted.getName(), accepted);
-        JingleDescriptionManager descriptionManager = jingleManager.getDescriptionManager(description.getNamespace());
 
-        if (descriptionManager == null) {
+            Async.go(new Runnable() {
-            LOGGER.log(Level.WARNING, "Unsupported description type: " + description.getNamespace());
+                @Override
-            return JingleElement.createSessionTerminate(getPeer(), getSessionId(), JingleReasonElement.Reason.unsupported_applications);
+                public void run() {
+                    accepted.handleContentAccept(request, jingleManager.getConnection());
                 }
-
+            });
-        descriptionManager.notifySessionInitiate(this);
-
-        return IQ.createResultIQ(request);
-    }
-
-    private IQ handleTransportInfo(JingleElement request) {
-        HashMap<JingleContentElement, JingleContent> affectedContents = getAffectedContents(request);
-
-        for (Map.Entry<JingleContentElement, JingleContent> entry : affectedContents.entrySet()) {
-            JingleTransport<?> transport = entry.getValue().getTransport();
-            JingleContentTransportInfoElement info = entry.getKey().getTransport().getInfo();
-            transport.handleTransportInfo(info, request);
         }
 
         return IQ.createResultIQ(request);
     }
 
-    private IQ handleTransportAccept(JingleElement request) {
-        HashMap<JingleContentElement, JingleContent> affectedContents = getAffectedContents(request);
-        for (Map.Entry<JingleContentElement, JingleContent> entry : affectedContents.entrySet()) {
-
-            PendingJingleAction pending = pendingJingleActions.get(entry.getValue());
-            if (pending == null) {
-                continue;
-            }
-
-            if (pending.getAction() != JingleAction.transport_replace) {
-                //TODO: Are multiple contents even possible here?
-                //TODO: How to react to partially illegal requests?
-                return JingleElement.createJingleErrorOutOfOrder(request);
-            }
-
-            entry.getValue().setTransport(((PendingJingleAction.TransportReplace) pending).getNewTransport());
-        }
-
-        return IQ.createResultIQ(request);
-    }
-
-    private IQ handleSessionAccept(JingleElement request) {
-        this.sessionState = SessionState.active;
-
-        return null;
-    }
-
-    private IQ handleSecurityInfo(JingleElement request) {
-        HashMap<JingleContentElement, JingleContent> affectedContents = getAffectedContents(request);
-        List<JingleElement> responses = new ArrayList<>();
-
-        for (Map.Entry<JingleContentElement, JingleContent> entry : affectedContents.entrySet()) {
-            responses.add(entry.getValue().getSecurity().handleSecurityInfo(entry.getKey().getSecurity().getSecurityInfo(), request));
-        }
-
-        for (JingleElement response : responses) {
-            try {
-                getJingleManager().getConnection().createStanzaCollectorAndSend(response).nextResultOrThrow();
-            } catch (SmackException.NoResponseException | XMPPException.XMPPErrorException | SmackException.NotConnectedException | InterruptedException e) {
-                LOGGER.log(Level.SEVERE, "Could not send response to security-info: " + e, e);
-            }
-        }
-
-        return IQ.createResultIQ(request);
-    }
-
-    private IQ handleSessionInfo(JingleElement request) {
-        return null;
-    }
-
-    private IQ handleDescriptionInfo(JingleElement request) {
-        HashMap<JingleContentElement, JingleContent> affectedContents = getAffectedContents(request);
-        List<JingleElement> responses = new ArrayList<>();
-
-        for (Map.Entry<JingleContentElement, JingleContent> entry : affectedContents.entrySet()) {
-            responses.add(entry.getValue().getDescription().handleDescriptionInfo(entry.getKey().getDescription().getDescriptionInfo()));
-        }
-
-        for (JingleElement response : responses) {
-            try {
-                getJingleManager().getConnection().createStanzaCollectorAndSend(response).nextResultOrThrow();
-            } catch (SmackException.NoResponseException | XMPPException.XMPPErrorException | SmackException.NotConnectedException | InterruptedException e) {
-                LOGGER.log(Level.SEVERE, "Could not send response to description-info: " + e, e);
-            }
-        }
-
-        return IQ.createResultIQ(request);
-    }
-
-    private IQ handleContentRemove(JingleElement request) {
-        return null;
-    }
-
-    private IQ handleContentReject(JingleElement request) {
-        return null;
-    }
-
-    private IQ handleContentModify(JingleElement request) {
-        return null;
-    }
-
     private IQ handleContentAdd(JingleElement request) {
-        final List<JingleContentElement> proposedContents = request.getContents();
+        final JingleContent proposed = getSoleProposedContentOrThrow(request);
-        final List<JingleContentElement> acceptedContents = new ArrayList<>();
 
-        final HashMap<String, List<JingleContent>> contentsByDescription = new HashMap<>();
+        final JingleDescriptionManager descriptionManager = jingleManager.getDescriptionManager(proposed.getDescription().getNamespace());
-
-        for (JingleContentElement p : proposedContents) {
-            JingleContentDescriptionElement description = p.getDescription();
-            List<JingleContent> list = contentsByDescription.get(description.getNamespace());
-            if (list == null) {
-                list = new ArrayList<>();
-                contentsByDescription.put(description.getNamespace(), list);
-            }
-            list.add(JingleContent.fromElement(p));
-        }
-
-        for (Map.Entry<String, List<JingleContent>> descriptionCategory : contentsByDescription.entrySet()) {
-            JingleDescriptionManager descriptionManager = JingleManager.getInstanceFor(getJingleManager().getConnection()).getDescriptionManager(descriptionCategory.getKey());
 
         if (descriptionManager == null) {
-                //blabla
+            throw new AssertionError("DescriptionManager is null: " + proposed.getDescription().getNamespace());
-                continue;
         }
 
-            for (final JingleContent content : descriptionCategory.getValue()) {
+        Async.go(new Runnable() {
-                descriptionManager.notifyContentAdd(content);
+            @Override
+            public void run() {
+                descriptionManager.notifyContentAdd(JingleSession.this, proposed);
             }
-        }
+        });
-
-        if (acceptedContents.size() > 0) {
-            JingleElement accept = JingleElement.createContentAccept(getPeer(), getSessionId(), acceptedContents);
-            try {
-                getJingleManager().getConnection().createStanzaCollectorAndSend(accept).nextResultOrThrow();
-            } catch (SmackException.NoResponseException | XMPPException.XMPPErrorException | InterruptedException | SmackException.NotConnectedException e) {
-                LOGGER.log(Level.SEVERE, "Could not send response to content-add: " + e, e);
-            }
-        }
-
-        //TODO: send content-reject for rejected contents!
 
         return IQ.createResultIQ(request);
     }
 
-    private IQ handleContentAccept(JingleElement request) {
+    private IQ handleContentReject(JingleElement request) {
-        return null;
+        for (JingleContentElement r : request.getContents()) {
+            final JingleContent rejected = proposedContents.get(r.getName());
+
+            if (rejected == null) {
+                throw new AssertionError("Illegal content name!");
             }
 
+            proposedContents.remove(rejected.getName());
+
+            /*
+            Async.go(new Runnable() {
+                @Override
+                public void run() {
+                    rejected.handleContentReject(request, jingleManager.getConnection());
+                }
+            });
+            */
+        }
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleContentRemove(final JingleElement request) {
+        for (JingleContentElement r : request.getContents()) {
+            final JingleContent removed = contents.get(r.getName());
+
+            if (removed == null) {
+                throw new AssertionError("Illegal content name!");
+            }
+
+            contents.remove(removed.getName());
+
+            Async.go(new Runnable() {
+                @Override
+                public void run() {
+                    removed.handleContentRemove(JingleSession.this, jingleManager.getConnection());
+                }
+            });
+        }
+
+        return IQ.createResultIQ(request);
+    }
+
+    /* ############## Processed further down ############## */
+
+    private IQ handleContentModify(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleContentModify(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleDescriptionInfo(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleDescriptionInfo(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleSecurityInfo(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleSecurityInfo(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleSessionInfo(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleSessionInfo(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleTransportAccept(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleTransportAccept(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleTransportInfo(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleTransportInfo(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleTransportReject(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleTransportReject(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    private IQ handleTransportReplace(final JingleElement request) {
+        final JingleContent content = getSoleAffectedContentOrThrow(request);
+        Async.go(new Runnable() {
+            @Override
+            public void run() {
+                content.handleTransportReplace(request, jingleManager.getConnection());
+            }
+        });
+
+        return IQ.createResultIQ(request);
+    }
+
+    /* ################ Other getters and setters ############### */
+
     public FullJid getInitiator() {
         return initiator;
     }
@@ -453,6 +451,57 @@ public class JingleSession {
         return map;
     }
 
+    private JingleContent getSoleAffectedContentOrThrow(JingleElement request) {
+        if (request.getContents().size() != 1) {
+            throw new AssertionError("More/less than 1 content in request!");
+        }
+
+        JingleContent content = contents.get(request.getContents().get(0).getName());
+        if (content == null) {
+            throw new AssertionError("Illegal content name!");
+        }
+
+        return content;
+    }
+
+    private JingleContent getSoleProposedContentOrThrow(JingleElement request) {
+        if (request.getContents().size() != 1) {
+            throw new AssertionError("More/less than 1 content in request!");
+        }
+
+        return JingleContent.fromElement(request.getContents().get(0));
+    }
+
+    public void addContent(JingleContent content) {
+        contents.put(content.getName(), content);
+        content.setParent(this);
+    }
+
+    public void addContent(JingleContentElement content)
+            throws UnsupportedSecurityException, UnsupportedTransportException, UnsupportedDescriptionException {
+        addContent(JingleContent.fromElement(content));
+    }
+
+    public ConcurrentHashMap<String, JingleContent> getContents() {
+        return contents;
+    }
+
+    public JingleContent getContent(String name) {
+        return contents.get(name);
+    }
+
+    public JingleContent getSoleContentOrThrow() {
+        if (contents.isEmpty()) {
+            return null;
+        }
+
+        if (contents.size() > 1) {
+            throw new IllegalStateException();
+        }
+
+        return contents.values().iterator().next();
+    }
+
     public SessionState getSessionState() {
         return sessionState;
     }

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

@@ -1,3 +1,19 @@
+/**
+ *
+ * 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.element;
 
 import org.jivesoftware.smack.packet.NamedElement;

smack-integration-test/src/main/java/org/jivesoftware/smackx/jft/JingleFileTransferTest.java

@@ -27,6 +27,8 @@ import java.util.ArrayList;
 import java.util.concurrent.Future;
 import java.util.logging.Level;
 
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smackx.bytestreams.socks5.Socks5Proxy;
 import org.jivesoftware.smackx.jft.controller.IncomingFileOfferController;
 import org.jivesoftware.smackx.jft.controller.OutgoingFileOfferController;
@@ -86,6 +88,7 @@ public class JingleFileTransferTest extends AbstractSmackIntegrationTest {
             @Override
             public void onIncomingFileOffer(IncomingFileOfferController offer) {
                 LOGGER.log(Level.INFO, "INCOMING FILE TRANSFER!");
+
                 offer.addProgressListener(new ProgressListener() {
                     @Override
                     public void started() {
@@ -102,11 +105,17 @@ public class JingleFileTransferTest extends AbstractSmackIntegrationTest {
                         resultSyncPoint2.signal();
                     }
                 });
-                receiveFuture.add(offer.accept(target));
+
+                try {
+                    receiveFuture.add(offer.accept(conTwo, target));
+                } catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NotConnectedException | SmackException.NoResponseException e) {
+                    fail(e.toString());
+                }
             }
         });
 
         OutgoingFileOfferController sending = aftm.sendFile(source, bob);
+
         sending.addProgressListener(new ProgressListener() {
             @Override
             public void started() {