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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013-2018 Regents of the University of California,
* Arizona Board of Regents,
* Colorado State University,
* University Pierre & Marie Curie, Sorbonne University,
* Washington University in St. Louis,
* Beijing Institute of Technology,
* The University of Memphis.
*
* 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.
*/
#include "collect-netifs.hpp"
#include "net/network-monitor.hpp"
#include <boost/asio/io_service.hpp>
namespace ndn {
namespace net {
namespace tests {
std::vector<shared_ptr<const NetworkInterface>>
collectNetworkInterfaces(bool allowCached)
{
static std::vector<shared_ptr<const NetworkInterface>> cached;
// cached.empty() indicates there's no cached list of netifs.
// Although it could also mean a system without any network interface, this situation is rare
// because the loopback interface is present on almost all systems.
if (!allowCached || cached.empty()) {
boost::asio::io_service io;
NetworkMonitor netmon(io);
if ((netmon.getCapabilities() & NetworkMonitor::CAP_ENUM) == 0) {
BOOST_THROW_EXCEPTION(NetworkMonitor::Error("NetworkMonitor::CAP_ENUM is unavailable"));
}
netmon.onEnumerationCompleted.connect([&io] { io.stop(); });
io.run();
io.reset();
cached = netmon.listNetworkInterfaces();
}
return cached;
}
} // namespace tests
} // namespace net
} // namespace ndn