1 files changed, 79 insertions, 0 deletions
diff --git a/trunk/qpid/cpp/src/qpid/sys/ConnectionCodec.h b/trunk/qpid/cpp/src/qpid/sys/ConnectionCodec.h
new file mode 100644
index 0000000000..7231b1daa6
--- /dev/null
+++ b/trunk/qpid/cpp/src/qpid/sys/ConnectionCodec.h
@@ -0,0 +1,79 @@
+#ifndef QPID_SYS_CONNECTION_CODEC_H
+#define QPID_SYS_CONNECTION_CODEC_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/sys/Codec.h"
+#include "qpid/framing/ProtocolVersion.h"
+
+namespace qpid {
+
+namespace sys {
+
+class InputHandlerFactory;
+class OutputControl;
+
+/**
+ * Interface of coder/decoder for a connection of a specific protocol
+ * version.
+ */
+class ConnectionCodec : public Codec {
+  public:
+    virtual ~ConnectionCodec() {}
+
+    /** Network connection was closed from other end. */
+    virtual void closed() = 0;
+    
+    virtual bool isClosed() const = 0;
+
+    virtual framing::ProtocolVersion getVersion() const = 0;
+
+    struct Factory {
+        virtual ~Factory() {}
+
+        /** Security Strength Factor - indicates the level of security provided
+         * by the underlying transport.  If zero, the transport provides no
+         * security (e.g. TCP). If non-zero, the transport provides some level
+         * of security (e.g. SSL).  The values for SSF can be interpreted as:
+         *
+         * 0 = No protection.
+         * 1 = Integrity checking only.
+         * >1 = Supports authentication, integrity and confidentiality.
+         *      The number represents the encryption key length.
+         */
+
+        /** Return 0 if version unknown */
+        virtual ConnectionCodec* create(
+            framing::ProtocolVersion, OutputControl&, const std::string& id,
+            unsigned int conn_ssf
+        ) = 0;
+
+        /** Return "preferred" codec for outbound connections. */
+        virtual ConnectionCodec* create(
+            OutputControl&, const std::string& id,
+            unsigned int conn_ssf
+        ) = 0;
+    };
+};
+
+}} // namespace qpid::sys
+
+#endif  /*!QPID_SYS_CONNECTION_CODEC_H*/