diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java
index f7e89270a..d12157801 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bytestreams/socks5/Socks5Proxy.java
@@ -361,7 +361,7 @@ public final class Socks5Proxy {
      * 
      * @param digest to be removed from the list of allowed transfers
      */
-    protected void removeTransfer(String digest) {
+    public void removeTransfer(String digest) {
         this.allowedConnections.remove(digest);
         this.connectionMap.remove(digest);
     }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleContent.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleContent.java
index 45e60dc1b..51e7b8242 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleContent.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleContent.java
@@ -67,14 +67,39 @@ public class JingleContent implements JingleTransportCallback, JingleSecurityCal
     private final List<Callback> callbacks = Collections.synchronizedList(new ArrayList<Callback>());
     private final Set<String> transportBlacklist = Collections.synchronizedSet(new HashSet<String>());
 
+    private short state;
+
     public enum STATE {
-        pending_accept,
-        pending_transmission_start,
-        pending_transport_replace,
-        transmission_in_progress,
-        transmission_successful,
-        transmission_failed,
-        transmission_cancelled
+        pending_accept((short) 1),
+        pending_transmission_start((short) 2),
+        pending_transport_replace((short) 4),
+        transmission_in_progress((short) 8),
+        transmission_successful((short) 16),
+        transmission_failed((short) 32),
+        transmission_cancelled((short) 64),
+        ;
+
+        final short value;
+
+        STATE(short value) {
+            this.value = value;
+        }
+
+        short getValue() {
+            return value;
+        }
+    }
+
+    public void addState(STATE state) {
+        this.state |= state.getValue();
+    }
+
+    public void removeState(STATE state) {
+        this.state ^= state.getValue();
+    }
+
+    public boolean hasState(STATE state) {
+        return (this.state & state.getValue()) == state.getValue();
     }
 
     public JingleContent(JingleContentElement.Creator creator, JingleContentElement.Senders senders) {
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleTransport.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleTransport.java
index 20ad3b59a..5054eccd6 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleTransport.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/components/JingleTransport.java
@@ -135,4 +135,6 @@ public abstract class JingleTransport<D extends JingleContentTransportElement> e
     }
 
     public abstract void handleSessionAccept(JingleContentTransportElement transportElement, XMPPConnection connection);
+
+    public abstract void cleanup();
 }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_ibb/JingleIBBTransport.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_ibb/JingleIBBTransport.java
index 5052f92d0..818a9121b 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_ibb/JingleIBBTransport.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_ibb/JingleIBBTransport.java
@@ -126,6 +126,11 @@ public class JingleIBBTransport extends JingleTransport<JingleIBBTransportElemen
         }
     }
 
+    @Override
+    public void cleanup() {
+        // Nothing to do.
+    }
+
     @Override
     public void addOurCandidate(JingleTransportCandidate<?> candidate) {
         // Sorry, we don't want any candidates.
@@ -133,7 +138,7 @@ public class JingleIBBTransport extends JingleTransport<JingleIBBTransportElemen
 
     @Override
     public void prepare(XMPPConnection connection) {
-        // Nuffin taddooh.
+        // Nothing to do.
     }
 
     @Override
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_s5b/JingleS5BTransport.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_s5b/JingleS5BTransport.java
index 8d854259f..514644599 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_s5b/JingleS5BTransport.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transport/jingle_s5b/JingleS5BTransport.java
@@ -276,6 +276,11 @@ public class JingleS5BTransport extends JingleTransport<JingleS5BTransportElemen
         return CANDIDATE_FAILURE;
     }
 
+    @Override
+    public void cleanup() {
+        Socks5Proxy.getSocks5Proxy().removeTransfer(ourDstAddr);
+    }
+
     void connectIfReady() {
         final JingleS5BTransportManager jingleS5BTransportManager = JingleS5BTransportManager.getInstanceFor(getParent().getParent().getJingleManager().getConnection());
         final JingleSession session = getParent().getParent();