1 /*

     2  *    Copyright 2006 Intel Corporation

     3  * 

     4  *    Licensed under the Apache License, Version 2.0 (the "License");

     5  *    you may not use this file except in compliance with the License.

     6  *    You may obtain a copy of the License at

     7  * 

     8  *        http://www.apache.org/licenses/LICENSE-2.0

     9  * 

    10  *    Unless required by applicable law or agreed to in writing, software

    11  *    distributed under the License is distributed on an "AS IS" BASIS,

    12  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    13  *    See the License for the specific language governing permissions and

    14  *    limitations under the License.

    15  */

    16 

    17 #ifndef _NULLCONVERGENCELAYER_H_

    18 #define _NULLCONVERGENCELAYER_H_

    19 

    20 #include "ConvergenceLayer.h"

    21 

    22 namespace dtn {

    23 

    24 /**

    25  * The null convergence layer consumes all bundles immediately and

    26  * does no actual transmission, roughly similar to /dev/null.

    27  */

    28 class NullConvergenceLayer : public ConvergenceLayer {

    29 public:

    30     NullConvergenceLayer();

    31 

    32     /// Link parameters

    33     class Params : public CLInfo {

    34     public:

    35         virtual ~Params() {}

    36         virtual void serialize(oasys::SerializeAction* a);

    37 

    38         /// Whether or not the link can actually send bundles (default true)

    39         bool can_transmit_;

    40     };

    41 

    42     /// Default parameters

    43     static Params defaults_;

    44 

    45     /// @{ Virtual from ConvergenceLayer

    46     bool init_link(const LinkRef& link, int argc, const char* argv[]);

    47     bool reconfigure_link(const LinkRef& link, int argc, const char* argv[]);

    48     void delete_link(const LinkRef& link);

    49     bool open_contact(const ContactRef& contact);

    50     void bundle_queued(const LinkRef& link, const BundleRef& bundle);

    51     void cancel_bundle(const LinkRef& link, const BundleRef& bundle);

    52     /// @}

    53 

    54 private:

    55     /// Helper function to parse link parameters

    56     bool parse_link_params(Params* params,

    57                            int argc, const char** argv,

    58                            const char** invalidp);

    59 };

    60 

    61 } // namespace dtn

    62 

    63 #endif /* _NULLCONVERGENCELAYER_H_ */