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Bug #2629 ยป consumer-exclude.cpp

Ilya Moiseenko, 03/09/2015 05:22 PM

 
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2014 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*
* @author Alexander Afanasyev <http://lasr.cs.ucla.edu/afanasyev/index.html>
*/

// correct way to include ndn-cxx headers
// #include <ndn-cxx/face.hpp>
#include "face.hpp"
#include "util/crypto.hpp"

// Enclosing code in ndn simplifies coding (can also use `using namespace ndn`)
namespace ndn {
// Additional nested namespace could be used to prevent/limit name contentions
namespace examples {

void
onData(Face& face,
const Interest& interest, Data& data)
{
std::cout << "I: " << interest.toUri() << std::endl;
std::cout << "D: " << data.getName().toUri() << std::endl;
}

void
onTimeout(Face& face,
const Interest& interest)
{
std::cout << "Timeout" << std::endl;
}

int
main(int argc, char** argv)
{
try {
Interest i(Name("/example/testApp/randomData"));
i.setScope(1);
i.setInterestLifetime(time::milliseconds(1000));
i.setMustBeFresh(true);

std::string content = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
ndn::ConstBufferPtr implicitDigestBuffer = ndn::crypto::sha256((uint8_t*)content.c_str(), content.size());
name::Component implicitDigest = name::Component::fromImplicitSha256Digest(implicitDigestBuffer);
Exclude exclusion;
exclusion.appendExclude(implicitDigest, false);
i.setExclude(exclusion);

Face face;
face.expressInterest(i,
bind(onData, ref(face), _1, _2),
bind(onTimeout, ref(face), _1));

// processEvents will block until the requested data received or timeout occurs
face.processEvents();
}
catch(std::exception& e) {
std::cerr << "ERROR: " << e.what() << std::endl;
return 1;
}
return 0;
}

} // namespace examples
} // namespace ndn

int
main(int argc, char** argv)
{
return ndn::examples::main(argc, argv);
}

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