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diff --git a/cpp/src/qpid/broker/Protocol.h b/cpp/src/qpid/broker/Protocol.h
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+++ b/cpp/src/qpid/broker/Protocol.h
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+#ifndef QPID_BROKER_PROTOCOL_H
+#define QPID_BROKER_PROTOCOL_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 <map>
+#include <string>
+#include <boost/shared_ptr.hpp>
+#include <boost/intrusive_ptr.hpp>
+
+namespace qpid {
+namespace sys {
+class ConnectionCodec;
+class OutputControl;
+struct SecuritySettings;
+}
+namespace framing {
+class Buffer;
+class ProtocolVersion;
+}
+namespace broker {
+class Message;
+class RecoverableMessage;
+namespace amqp_0_10 {
+class MessageTransfer;
+}
+
+/**
+ * A simple abstraction allowing pluggable protocol(s)
+ * (versions). AMQP 0-10 is considered the default. Alternatives must
+ * provide a ConnectionCodec for encoding/decoding the protocol in
+ * full, a means of translating the native message format of that
+ * protocol into AMQP 0-10 and a means of recovering durable messages
+ * from disk.
+ */
+class Protocol
+{
+  public:
+    virtual ~Protocol() {}
+    virtual qpid::sys::ConnectionCodec* create(const qpid::framing::ProtocolVersion&, qpid::sys::OutputControl&, const std::string&, const qpid::sys::SecuritySettings&) = 0;
+    virtual boost::intrusive_ptr<const qpid::broker::amqp_0_10::MessageTransfer> translate(const Message&) = 0;
+    virtual boost::shared_ptr<RecoverableMessage> recover(qpid::framing::Buffer&) = 0;
+
+  private:
+};
+
+class ProtocolRegistry : public Protocol
+{
+  public:
+    qpid::sys::ConnectionCodec* create(const qpid::framing::ProtocolVersion&, qpid::sys::OutputControl&, const std::string&, const qpid::sys::SecuritySettings&);
+    boost::intrusive_ptr<const qpid::broker::amqp_0_10::MessageTransfer> translate(const Message&);
+    boost::shared_ptr<RecoverableMessage> recover(qpid::framing::Buffer&);
+
+    ~ProtocolRegistry();
+    void add(const std::string&, Protocol*);
+  private:
+    //name may be useful for descriptive purposes or even for some
+    //limited manipulation of ordering
+    typedef std::map<std::string, Protocol*> Protocols;
+    Protocols protocols;
+};
+}} // namespace qpid::broker
+
+#endif  /*!QPID_BROKER_PROTOCOL_H*/