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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2017 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.
*/
#ifndef NDN_SECURITY_V2_CERTIFICATE_FETCHER_FROM_NETWORK_HPP
#define NDN_SECURITY_V2_CERTIFICATE_FETCHER_FROM_NETWORK_HPP
#include "certificate-fetcher.hpp"
namespace ndn {
namespace lp {
class Nack;
} // namespace lp
namespace security {
namespace v2 {
/**
* @brief Fetch missing keys from the network
*/
class CertificateFetcherFromNetwork : public CertificateFetcher
{
public:
explicit
CertificateFetcherFromNetwork(Face& face);
protected:
void
doFetch(const shared_ptr<CertificateRequest>& certRequest, const shared_ptr<ValidationState>& state,
const ValidationContinuation& continueValidation) override;
private:
/**
* @brief Callback invoked when certificate is retrieved.
*/
void
dataCallback(const Data& data,
const shared_ptr<CertificateRequest>& certRequest, const shared_ptr<ValidationState>& state,
const ValidationContinuation& continueValidation);
/**
* @brief Callback invoked when interest for fetching certificate gets NACKed.
*
* It will retry if certRequest->m_nRetriesLeft > 0
*
* @todo Delay retry for some amount of time
*/
void
nackCallback(const lp::Nack& nack,
const shared_ptr<CertificateRequest>& certRequest, const shared_ptr<ValidationState>& state,
const ValidationContinuation& continueValidation);
/**
* @brief Callback invoked when interest for fetching certificate times out.
*
* It will retry if certRequest->m_nRetriesLeft > 0
*/
void
timeoutCallback(const shared_ptr<CertificateRequest>& certRequest, const shared_ptr<ValidationState>& state,
const ValidationContinuation& continueValidation);
protected:
Face& m_face;
};
} // namespace v2
} // namespace security
} // namespace ndn
#endif // NDN_SECURITY_V2_CERTIFICATE_FETCHER_FROM_NETWORK_HPP