diff --git a/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterGroup.java b/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterGroup.java
index 8fd19bd05..f756c26cb 100644
--- a/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterGroup.java
+++ b/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterGroup.java
@@ -22,7 +22,7 @@ import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
 
-import org.jivesoftware.smack.PacketCollector;
+import org.jivesoftware.smack.Manager;
 import org.jivesoftware.smack.XMPPConnection;
 import org.jivesoftware.smack.SmackException.NoResponseException;
 import org.jivesoftware.smack.SmackException.NotConnectedException;
@@ -37,10 +37,9 @@ import org.jxmpp.jid.Jid;
  * @see Roster#getGroup(String)
  * @author Matt Tucker
  */
-public class RosterGroup {
+public class RosterGroup extends Manager {
 
     private final String name;
-    private final XMPPConnection connection;
     private final Set<RosterEntry> entries;
 
     /**
@@ -50,8 +49,8 @@ public class RosterGroup {
      * @param connection the connection the group belongs to.
      */
     RosterGroup(String name, XMPPConnection connection) {
+        super(connection);
         this.name = name;
-        this.connection = connection;
         entries = new LinkedHashSet<RosterEntry>();
     }
 
@@ -85,7 +84,7 @@ public class RosterGroup {
                 item.removeGroupName(this.name);
                 item.addGroupName(name);
                 packet.addRosterItem(item);
-                connection.createPacketCollectorAndSend(packet).nextResultOrThrow();
+                connection().createPacketCollectorAndSend(packet).nextResultOrThrow();
             }
         }
     }
@@ -171,7 +170,6 @@ public class RosterGroup {
      * @throws InterruptedException 
      */
     public void addEntry(RosterEntry entry) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
-        PacketCollector collector = null;
         // Only add the entry if it isn't already in the list.
         synchronized (entries) {
             if (!entries.contains(entry)) {
@@ -181,12 +179,9 @@ public class RosterGroup {
                 item.addGroupName(getName());
                 packet.addRosterItem(item);
                 // Wait up to a certain number of seconds for a reply from the server.
-                collector = connection.createPacketCollectorAndSend(packet);
+                connection().createPacketCollectorAndSend(packet).nextResultOrThrow();
             }
         }
-        if (collector != null) {
-            collector.nextResultOrThrow();
-        }
     }
 
     /**
@@ -203,7 +198,6 @@ public class RosterGroup {
      * @throws InterruptedException 
      */
     public void removeEntry(RosterEntry entry) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
-        PacketCollector collector = null;
         // Only remove the entry if it's in the entry list.
         // Remove the entry locally, if we wait for RosterPacketListenerprocess>>Packet(Packet)
         // to take place the entry will exist in the group until a packet is received from the 
@@ -216,12 +210,9 @@ public class RosterGroup {
                 item.removeGroupName(this.getName());
                 packet.addRosterItem(item);
                 // Wait up to a certain number of seconds for a reply from the server.
-                collector = connection.createPacketCollectorAndSend(packet);
+                connection().createPacketCollectorAndSend(packet).nextResultOrThrow();
             }
         }
-        if (collector != null) {
-            collector.nextResultOrThrow();
-        }
     }
 
     void addEntryLocal(RosterEntry entry) {
diff --git a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/agent/AgentSession.java b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/agent/AgentSession.java
index 46c5b6753..e662294f7 100644
--- a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/agent/AgentSession.java
+++ b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/agent/AgentSession.java
@@ -41,6 +41,8 @@ import org.jivesoftware.smack.filter.AndFilter;
 import org.jivesoftware.smack.filter.FromMatchesFilter;
 import org.jivesoftware.smack.filter.OrFilter;
 import org.jivesoftware.smack.filter.StanzaTypeFilter;
+import org.jivesoftware.smack.iqrequest.AbstractIqRequestHandler;
+import org.jivesoftware.smack.iqrequest.IQRequestHandler.Mode;
 import org.jivesoftware.smack.packet.DefaultExtensionElement;
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smack.packet.Message;
@@ -141,8 +143,6 @@ public class AgentSession {
 
         // Create a filter to listen for packets we're interested in.
         OrFilter filter = new OrFilter(
-                        new StanzaTypeFilter(OfferRequestProvider.OfferRequestPacket.class),
-                        new StanzaTypeFilter(OfferRevokeProvider.OfferRevokePacket.class),
                         new StanzaTypeFilter(Presence.class),
                         new StanzaTypeFilter(Message.class));
 
@@ -157,6 +157,37 @@ public class AgentSession {
             }
         };
         connection.addAsyncStanzaListener(packetListener, filter);
+
+        connection.registerIQRequestHandler(new AbstractIqRequestHandler(
+                OfferRequestProvider.OfferRequestPacket.ELEMENT,
+                OfferRequestProvider.OfferRequestPacket.NAMESPACE, IQ.Type.set,
+                Mode.async) {
+
+            @Override
+            public IQ handleIQRequest(IQ iqRequest) {
+                // Acknowledge the IQ set.
+                IQ reply = IQ.createResultIQ(iqRequest);
+
+                fireOfferRequestEvent((OfferRequestProvider.OfferRequestPacket) iqRequest);
+                return reply;
+            }
+        });
+
+        connection.registerIQRequestHandler(new AbstractIqRequestHandler(
+                OfferRevokeProvider.OfferRevokePacket.ELEMENT,
+                OfferRevokeProvider.OfferRevokePacket.NAMESPACE, IQ.Type.set,
+                Mode.async) {
+
+            @Override
+            public IQ handleIQRequest(IQ iqRequest) {
+                // Acknowledge the IQ set.
+                IQ reply = IQ.createResultIQ(iqRequest);
+
+                fireOfferRevokeEvent((OfferRevokeProvider.OfferRevokePacket) iqRequest);
+                return reply;
+            }
+        });
+
         // Create the agent associated to this session
         agent = new Agent(connection, workgroupJID);
     }
@@ -704,15 +735,8 @@ public class AgentSession {
 
     // PacketListener Implementation.
 
-    private void handlePacket(Stanza packet) throws NotConnectedException, InterruptedException {
-        if (packet instanceof OfferRequestProvider.OfferRequestPacket) {
-            // Acknowledge the IQ set.
-            IQ reply = IQ.createResultIQ((IQ) packet);
-            connection.sendStanza(reply);
-
-            fireOfferRequestEvent((OfferRequestProvider.OfferRequestPacket)packet);
-        }
-        else if (packet instanceof Presence) {
+    private void handlePacket(Stanza packet) {
+        if (packet instanceof Presence) {
             Presence presence = (Presence)packet;
 
             // The workgroup can send us a number of different presence packets. We
@@ -794,13 +818,6 @@ public class AgentSession {
                         message.getFrom(), metaData);
             }
         }
-        else if (packet instanceof OfferRevokeProvider.OfferRevokePacket) {
-            // Acknowledge the IQ set.
-            IQ reply = IQ.createResultIQ((OfferRevokeProvider.OfferRevokePacket) packet);
-            connection.sendStanza(reply);
-
-            fireOfferRevokeEvent((OfferRevokeProvider.OfferRevokePacket)packet);
-        }
     }
 
     /**
diff --git a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRequestProvider.java b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRequestProvider.java
index 770129b89..ed19640b4 100644
--- a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRequestProvider.java
+++ b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRequestProvider.java
@@ -111,6 +111,9 @@ public class OfferRequestProvider extends IQProvider<IQ> {
 
     public static class OfferRequestPacket extends IQ {
 
+        public static final String ELEMENT = "offer";
+        public static final String NAMESPACE = "http://jabber.org/protocol/workgroup";
+
         private int timeout;
         private Jid userID;
         private Jid userJID;
@@ -121,7 +124,7 @@ public class OfferRequestProvider extends IQProvider<IQ> {
         public OfferRequestPacket(Jid userJID, Jid userID, int timeout, Map<String, List<String>> metaData,
                 String sessionID, OfferContent content)
         {
-            super("offer", "http://jabber.org/protocol/workgroup");
+            super(ELEMENT, NAMESPACE);
             this.userJID = userJID;
             this.userID = userID;
             this.timeout = timeout;
diff --git a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRevokeProvider.java b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRevokeProvider.java
index 297eee74a..bdca48492 100644
--- a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRevokeProvider.java
+++ b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/packet/OfferRevokeProvider.java
@@ -69,13 +69,15 @@ public class OfferRevokeProvider extends IQProvider<IQ> {
 
     public class OfferRevokePacket extends IQ {
 
+        public static final String ELEMENT = "offer-revoke";
+        public static final String NAMESPACE = "http://jabber.org/protocol/workgroup";
         private Jid userJID;
         private Jid userID;
         private String sessionID;
         private String reason;
 
         public OfferRevokePacket (Jid userJID, Jid userID, String cause, String sessionID) {
-            super("offer-revoke", "http://jabber.org/protocol/workgroup");
+            super(ELEMENT, NAMESPACE);
             this.userJID = userJID;
             this.userID = userID;
             this.reason = cause;