UDPConvergenceLayer.h

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00006  * 
00007  * Intel Open Source License 
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00038 #ifndef _UDP_CONVERGENCE_LAYER_H_
00039 #define _UDP_CONVERGENCE_LAYER_H_
00040 
00041 #include <oasys/io/UDPClient.h>
00042 #include <oasys/thread/Thread.h>
00043 #include <oasys/io/RateLimitedSocket.h>
00044 
00045 #include "IPConvergenceLayer.h"
00046 
00047 namespace dtn {
00048 
00049 class UDPConvergenceLayer : public IPConvergenceLayer {
00050 public:
00054     static const u_int MAX_BUNDLE_LEN = 65507;
00055 
00059     UDPConvergenceLayer();
00060         
00064     bool interface_up(Interface* iface, int argc, const char* argv[]);
00065 
00069     bool interface_down(Interface* iface);
00070     
00074     void dump_interface(Interface* iface, oasys::StringBuffer* buf);
00075 
00079     bool init_link(Link* link, int argc, const char* argv[]);
00080     
00084     void dump_link(Link* link, oasys::StringBuffer* buf);
00085     
00090     bool open_contact(const ContactRef& contact);
00091     
00095     bool close_contact(const ContactRef& contact);
00096 
00100     void send_bundle(const ContactRef& contact, Bundle* bundle);
00101 
00111     class Params : public CLInfo {
00112     public:
00113         in_addr_t local_addr_;          
00114         u_int16_t local_port_;          
00115         in_addr_t remote_addr_;         
00116         u_int16_t remote_port_;         
00117 
00118         u_int32_t rate_;                
00119         u_int32_t bucket_depth_;        
00120     };
00121     
00125     static Params defaults_;
00126 
00127 protected:
00128     bool parse_params(Params* params, int argc, const char** argv,
00129                       const char** invalidp);
00134     class Receiver : public CLInfo,
00135                      public oasys::UDPClient,
00136                      public oasys::Thread
00137     {
00138     public:
00142         Receiver(UDPConvergenceLayer::Params* params);
00143 
00147         virtual ~Receiver() {}
00148         
00158         void run();
00159 
00160         UDPConvergenceLayer::Params params_;
00161         
00162     protected:
00166         void process_data(u_char* bp, size_t len);
00167     };
00168 
00169     /*
00170      * Helper class that wraps the sender-side per-contact state.
00171      */
00172     class Sender : public CLInfo, public Logger {
00173     public:
00177         virtual ~Sender() {}
00178 
00182         bool init(Params* params, in_addr_t addr, u_int16_t port);
00183         
00184     private:
00185         friend class UDPConvergenceLayer;
00186         
00190         Sender(const ContactRef& contact);
00191         
00195         bool send_bundle(Bundle* bundle);
00196 
00200         Params* params_;
00201 
00205         oasys::UDPClient socket_;
00206 
00210         oasys::RateLimitedSocket rate_socket_;
00211         
00215         ContactRef contact_;
00216 
00222         u_char buf_[UDPConvergenceLayer::MAX_BUNDLE_LEN];
00223     };   
00224 };
00225 
00226 } // namespace dtn
00227 
00228 #endif /* _UDP_CONVERGENCE_LAYER_H_ */

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