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diff --git a/qpid/cpp/src/qpid/ha/QueueReplicator.h b/qpid/cpp/src/qpid/ha/QueueReplicator.h
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+#ifndef QPID_HA_QUEUEREPLICATOR_H
+#define QPID_HA_QUEUEREPLICATOR_H
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ *
+ */
+#include "qpid/broker/Exchange.h"
+#include "qpid/framing/SequenceSet.h"
+#include <boost/enable_shared_from_this.hpp>
+#include <iosfwd>
+
+namespace qpid {
+
+namespace broker {
+class Bridge;
+class Link;
+class Queue;
+class QueueRegistry;
+class SessionHandler;
+class Deliverable;
+}
+
+namespace ha {
+
+/**
+ * Exchange created on a backup broker to replicate a queue on the primary.
+ *
+ * Puts replicated messages on the local queue, handles dequeue events.
+ * Creates a ReplicatingSubscription on the primary by passing special
+ * arguments to the consume command.
+ *
+ * THREAD SAFE: Called in different connection threads.
+ */
+class QueueReplicator : public broker::Exchange,
+                        public boost::enable_shared_from_this<QueueReplicator>
+{
+  public:
+    static const std::string DEQUEUE_EVENT_KEY;
+    static const std::string POSITION_EVENT_KEY;
+    static std::string replicatorName(const std::string& queueName);
+
+    QueueReplicator(boost::shared_ptr<broker::Queue> q, boost::shared_ptr<broker::Link> l);
+    ~QueueReplicator();
+
+    void activate();            // Call after ctor
+    void deactivate();          // Call before dtor
+
+    std::string getType() const;
+    bool bind(boost::shared_ptr<broker::Queue
+              >, const std::string&, const framing::FieldTable*);
+    bool unbind(boost::shared_ptr<broker::Queue>, const std::string&, const framing::FieldTable*);
+    void route(broker::Deliverable&, const std::string&, const framing::FieldTable*);
+    bool isBound(boost::shared_ptr<broker::Queue>, const std::string* const, const framing::FieldTable* const);
+
+  private:
+    void initializeBridge(broker::Bridge& bridge, broker::SessionHandler& sessionHandler,
+                          boost::shared_ptr<QueueReplicator> self);
+    void dequeue(framing::SequenceNumber, const sys::Mutex::ScopedLock&);
+
+    std::string logPrefix;
+    std::string bridgeName;
+    sys::Mutex lock;
+    boost::shared_ptr<broker::Queue> queue;
+    boost::shared_ptr<broker::Link> link;
+};
+
+}} // namespace qpid::ha
+
+#endif  /*!QPID_HA_QUEUEREPLICATOR_H*/