AODVApp.cc

// Copyright 2008 Michael Marsh, University of Maryland.
//
// This file is part of pydtn.
//
// pydtn is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// pydtn is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with pydtn.  If not, see <http://www.gnu.org/licenses/>.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the University
// of Maryland.
//
// pydtn extends and embeds the Python interpreter, which is
// Copyright 2001-2006 Python Software Foundation, All Rights Reserved,
// and is released under the PSF License Agreement.
//
// RANLUX random number generation uses the Boost library,
// Copyright 1994-2006 by various authors (details in individual files),
// which is released under the Boost Software License, Version 1.0.

#include "config.h"

#include "dtnaodv.h"
#include "AODVApp.h"
#include "AODVForwardingPolicy.h"
#include "dtn/Bundle.h"
#include "dtn/Node.h"
#include "dtn/Exception.h"

#include <iostream>

static unsigned char initstring[] = {'a','o','d','v','a','p','p'}; 
DTN::ByteString AODVApp::m_appID(initstring);

AODVApp::AODVApp( AODVForwardingPolicy* pol ) :
   Application(),
   m_policy( pol )
{
   if ( 0 != pol )
   {
      dtnaodv_appMap[ &(pol->state()) ] = this;
   }
}

AODVApp::~AODVApp()
{
}

void
AODVApp::send( const aodv_msghdr_t* headers, const aodv_chunk_t* message )
{
   if ( 0 == m_owner ) return;
   if ( 0 == m_policy ) return;
   if ( 0 == headers ) return;
   if ( 0 == message ) return;

   struct timeval tv = DTN::dtn_time();
   struct timeval e;
   e.tv_sec = tv.tv_sec;
   e.tv_usec = tv.tv_usec + 1000*m_policy->traversalTime();
   e.tv_sec += ( e.tv_usec / 1000000 );
   e.tv_usec = ( e.tv_usec % 1000000 );

   DTN::ByteString dest( headers->addr.data, headers->addr.length );
   const aodv_chunk_t* c = message;
   DTN::ByteString data;
   while ( 0 != c )
   {
      data.append( c->data, c->length );
      c = c->next;
   }
   DTN::Bundle::BundleType bt = DTN::Bundle::kData | DTN::Bundle::kNoACK;
   if ( dtnaodv_bcast_addr == dest )
   {
      bt |= DTN::Bundle::kBcast;
   }
   DTN::Bundle* b = new DTN::Bundle( m_owner->nextSeq(),
                                     m_owner->addr(),
                                     dest,
                                     data,
                                     tv,
                                     e,
                                     bt,
                                     m_appID );
   m_owner->forward(b);
}

void
AODVApp::notify()
{
   if ( 0 == m_owner ) return;
   if ( 0 == m_policy ) return;
   m_policy->notify();
}

void
AODVApp::process( const DTN::Bundle& b )
{
   if ( 0 == m_owner ) return;
   if ( 0 == m_policy ) return;
   m_policy->handleMessage(b);
}

---