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/*******************************************************************************
* *
* M-DART Routing Protocol *
* *
* Copyright (C) 2006 by Marcello Caleffi *
* marcello.caleffi@unina.it *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions are met: *
* 1. Redistributions of source code must retain the above copyright notice, *
* this list of conditions and the following disclaimer. *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* 3. The name of the author may not be used to endorse or promote products *
* derived from this software without specific prior written permission. *
* *
* This software is provided by the author ``as is'' and any express or *
* implied warranties, including, but not limited to, the implied warranties *
* of merchantability and fitness for a particular purpose are disclaimed. *
* in no event shall the author be liable for any direct, indirect, *
* incidental, special, exemplary, or consequential damages (including, but *
* not limited to, procurement of substitute goods or services; loss of use, *
* data, or profits; or business interruption) however caused and on any *
* theory of liability, whether in contract, strict liability, or tort *
* (including negligence or otherwise) arising in any way out of the use of *
* this software, even if advised of the possibility of such damage. *
* *
* The M-DART code has been developed by Marcello Caleffi during his Ph.D. at *
* the Department of Biomedical, Electronic and Telecommunications Engineering *
* University of Naples Federico II, Italy. *
* *
* In order to give credit and recognition to the author, if you use M-DART *
* results or results obtained by modificating the M-DART source code, please *
* cite one of the following papers: *
* - M. Caleffi, L. Paura, "M-DART: Multi-Path Dynamic Address RouTing", *
* Wireless Communications and Mobile Computing, 2010 *
* - M. Caleffi, G. Ferraiuolo, L. Paura, "Augmented Tree-based Routing *
* Protocol for Scalable Ad Hoc Networks", Proc. of IEEE MASS '07: IEEE *
* Internatonal Conference on Mobile Adhoc and Sensor Systems, Pisa (Italy), *
* October 8-11 2007. *
* *
******************************************************************************/
#ifndef __mdart_dht_h__
#define __mdart_dht_h__
#include <mdart/mdart_function.h>
//------------------------------------------------------------------------------
// DHT entry
//------------------------------------------------------------------------------
class DHT_Entry {
public:
DHT_Entry(nsaddr_t id, nsaddr_t address) {
id_ = id;
address_ = address;
expire_ = CURRENT_TIME + MDART_DHT_ENTRY_TIMEOUT;
}
inline nsaddr_t id() const {
return id_;
}
inline nsaddr_t address() const {
return address_;
}
inline void address(nsaddr_t address) {
address_ = address;
}
inline double expire() const {
return expire_;
}
inline void expire(double expire) {
expire_ = expire;
}
private:
nsaddr_t id_;
nsaddr_t address_;
double expire_;
};
//------------------------------------------------------------------------------
// DHT Table
//------------------------------------------------------------------------------
typedef std::set<DHT_Entry*> dhtTable;
//------------------------------------------------------------------------------
// DHT timer
//------------------------------------------------------------------------------
class DHT;
class DHTTimer : public Handler {
public:
DHTTimer(DHT* dht);
void handle(Event*);
protected:
DHT* dht_;
Event intr;
u_int32_t counter;
};
//------------------------------------------------------------------------------
// DHT
//------------------------------------------------------------------------------
class DHT {
public:
// DHT
DHT();
~DHT();
// DHT functions
void addEntry(nsaddr_t, nsaddr_t);
void addEntry(nsaddr_t, nsaddr_t, double);
void purge();
DHT_Entry* getEntry(u_int32_t);
nsaddr_t findAdd(nsaddr_t);
nsaddr_t findId(nsaddr_t);
u_int32_t DHTSize();
PacketData* getDHTUpdate();
// void setDHTUpdate(PacketData*);
// Debug functions
void printDHT();
private:
// DHT private functions
DHT_Entry* getEntry(nsaddr_t);
void removeEntry(nsaddr_t);
void clear();
// DHT private members
DHTTimer* timer_;
dhtTable* table_;
};
#endif /* __mdart_dht_h__ */
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