--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlib/conv_layers/NullConvergenceLayer.h	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,63 @@
+/*
+ *    Copyright 2006 Intel Corporation
+ * 
+ *    Licensed 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.
+ */
+
+#ifndef _NULLCONVERGENCELAYER_H_
+#define _NULLCONVERGENCELAYER_H_
+
+#include "ConvergenceLayer.h"
+
+namespace dtn {
+
+/**
+ * The null convergence layer consumes all bundles immediately and
+ * does no actual transmission, roughly similar to /dev/null.
+ */
+class NullConvergenceLayer : public ConvergenceLayer {
+public:
+    NullConvergenceLayer();
+
+    /// Link parameters
+    class Params : public CLInfo {
+    public:
+        virtual ~Params() {}
+        virtual void serialize(oasys::SerializeAction* a);
+
+        /// Whether or not the link can actually send bundles (default true)
+        bool can_transmit_;
+    };
+
+    /// Default parameters
+    static Params defaults_;
+
+    /// @{ Virtual from ConvergenceLayer
+    bool init_link(const LinkRef& link, int argc, const char* argv[]);
+    bool reconfigure_link(const LinkRef& link, int argc, const char* argv[]);
+    void delete_link(const LinkRef& link);
+    bool open_contact(const ContactRef& contact);
+    void bundle_queued(const LinkRef& link, const BundleRef& bundle);
+    void cancel_bundle(const LinkRef& link, const BundleRef& bundle);
+    /// @}
+
+private:
+    /// Helper function to parse link parameters
+    bool parse_link_params(Params* params,
+                           int argc, const char** argv,
+                           const char** invalidp);
+};
+
+} // namespace dtn
+
+#endif /* _NULLCONVERGENCELAYER_H_ */