tools/ndn-autoconfig/dns-srv.hpp

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014-2022,  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 NFD (Named Data Networking Forwarding Daemon).
 * See AUTHORS.md for complete list of NFD authors and contributors.
 *
 * NFD 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.
 *
 * NFD 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
 * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NFD_TOOLS_NDN_AUTOCONFIG_DNS_SRV_HPP
#define NFD_TOOLS_NDN_AUTOCONFIG_DNS_SRV_HPP

#include <stdexcept>
#include <string>

namespace ndn::autoconfig {

/** \file
 *  \brief provide synchronous DNS SRV record querying
 */

class DnsSrvError : public std::runtime_error
{
public:
  using std::runtime_error::runtime_error;
};

/** \brief Send DNS SRV request for \p fqdn
 *  \param fqdn a fully qualified domain name
 *  \return FaceUri of the hub from the requested SRV record
 *  \throw DnsSrvError query returns nothing or SRV record cannot be parsed
 */
std::string
querySrvRr(const std::string& fqdn);

/** \brief Send DNS SRV request using search domain list
 *  \return FaceUri of the hub from the requested SRV record
 *  \throw DnsSrvError if query returns nothing or SRV record cannot be parsed
 */
std::string
querySrvRrSearch();

} // namespace ndn::autoconfig

#endif // NFD_TOOLS_NDN_AUTOCONFIG_DNS_SRV_HPP