guess-from-identity-name.cpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2014-2017, Regents of the University of California,
4  * Arizona Board of Regents,
5  * Colorado State University,
6  * University Pierre & Marie Curie, Sorbonne University,
7  * Washington University in St. Louis,
8  * Beijing Institute of Technology,
9  * The University of Memphis.
10  *
11  * This file is part of NFD (Named Data Networking Forwarding Daemon).
12  * See AUTHORS.md for complete list of NFD authors and contributors.
13  *
14  * NFD is free software: you can redistribute it and/or modify it under the terms
15  * of the GNU General Public License as published by the Free Software Foundation,
16  * either version 3 of the License, or (at your option) any later version.
17  *
18  * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
19  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
20  * PURPOSE. See the GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License along with
23  * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
24  */
25 
27 #include "dns-srv.hpp"
28 
29 #include <ndn-cxx/security/pib/identity.hpp>
30 #include <ndn-cxx/security/pib/pib.hpp>
31 
32 #include <sstream>
33 
34 namespace ndn {
35 namespace tools {
36 namespace autoconfig {
37 
39  : m_keyChain(keyChain)
40 {
41 }
42 
43 void
44 GuessFromIdentityName::doStart()
45 {
46  std::cerr << "Trying default identity name..." << std::endl;
47 
48  Name identity = m_keyChain.getPib().getDefaultIdentity().getName();
49 
50  std::ostringstream serverName;
51  for (auto i = identity.rbegin(); i != identity.rend(); ++i) {
52  serverName << i->toUri() << ".";
53  }
54  serverName << "_homehub._autoconf.named-data.net";
55 
56  try {
57  std::string hubUri = querySrvRr(serverName.str());
58  this->provideHubFaceUri(hubUri);
59  }
60  catch (const DnsSrvError& e) {
61  this->fail(e.what());
62  }
63 }
64 
65 } // namespace autoconfig
66 } // namespace tools
67 } // namespace ndn
Copyright (c) 2014-2017, Regents of the University of California, Arizona Board of Regents...
Definition: dns-srv.cpp:41
provide synchronous DNS SRV record querying
std::string querySrvRr(const std::string &fqdn)
Send DNS SRV request for fqdn.
Definition: dns-srv.cpp:116
void fail(const std::string &msg)
Definition: stage.cpp:65
void provideHubFaceUri(const std::string &s)
parse HUB FaceUri from string and declare success
Definition: stage.cpp:45