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Alexander Afanasyevc169a812014-05-20 20:37:29 -04001/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
Davide Pesaventocdcde902017-08-23 15:40:22 -04002/*
Davide Pesavento0f830802018-01-16 23:58:58 -05003 * Copyright (c) 2013-2018 Regents of the University of California.
Alexander Afanasyevdfa52c42014-04-24 21:10:11 -07004 *
5 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
Alexander Afanasyevdfa52c42014-04-24 21:10:11 -07006 *
Alexander Afanasyevc169a812014-05-20 20:37:29 -04007 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
8 * terms of the GNU Lesser General Public License as published by the Free Software
9 * Foundation, either version 3 of the License, or (at your option) any later version.
10 *
11 * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
12 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14 *
15 * You should have received copies of the GNU General Public License and GNU Lesser
16 * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
17 * <http://www.gnu.org/licenses/>.
18 *
19 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
Alexander Afanasyevdfa52c42014-04-24 21:10:11 -070020 *
21 * @author Alexander Afanasyev <http://lasr.cs.ucla.edu/afanasyev/index.html>
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080022 */
23
Alexander Afanasyev766cea72014-04-24 19:16:42 -070024// correct way to include ndn-cxx headers
25// #include <ndn-cxx/face.hpp>
Alexander Afanasyev09c613f2014-01-29 00:23:58 -080026#include "face.hpp"
27
Davide Pesaventocdcde902017-08-23 15:40:22 -040028#include <iostream>
29
Alexander Afanasyev151a8552014-04-11 00:54:43 -070030// Enclosing code in ndn simplifies coding (can also use `using namespace ndn`)
31namespace ndn {
Davide Pesaventocdcde902017-08-23 15:40:22 -040032// Additional nested namespaces can be used to prevent/limit name conflicts
Alexander Afanasyev151a8552014-04-11 00:54:43 -070033namespace examples {
34
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070035class Consumer : noncopyable
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080036{
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070037public:
38 void
39 run()
40 {
41 Interest interest(Name("/example/testApp/randomData"));
Davide Pesavento0f830802018-01-16 23:58:58 -050042 interest.setInterestLifetime(2_s); // 2 seconds
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070043 interest.setMustBeFresh(true);
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080044
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070045 m_face.expressInterest(interest,
46 bind(&Consumer::onData, this, _1, _2),
Weiwei Liuab9aad02016-10-09 13:56:04 -070047 bind(&Consumer::onNack, this, _1, _2),
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070048 bind(&Consumer::onTimeout, this, _1));
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080049
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070050 std::cout << "Sending " << interest << std::endl;
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080051
52 // processEvents will block until the requested data received or timeout occurs
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070053 m_face.processEvents();
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080054 }
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070055
56private:
57 void
58 onData(const Interest& interest, const Data& data)
59 {
60 std::cout << data << std::endl;
Alexander Afanasyevc4b75982014-01-09 14:51:45 -080061 }
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070062
63 void
Weiwei Liuab9aad02016-10-09 13:56:04 -070064 onNack(const Interest& interest, const lp::Nack& nack)
65 {
66 std::cout << "received Nack with reason " << nack.getReason()
67 << " for interest " << interest << std::endl;
68 }
69
70 void
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070071 onTimeout(const Interest& interest)
72 {
73 std::cout << "Timeout " << interest << std::endl;
74 }
75
76private:
77 Face m_face;
78};
Alexander Afanasyev151a8552014-04-11 00:54:43 -070079
80} // namespace examples
81} // namespace ndn
82
83int
84main(int argc, char** argv)
85{
Steve DiBenedetto9fcc24f2015-01-05 12:16:16 -070086 ndn::examples::Consumer consumer;
87 try {
88 consumer.run();
89 }
90 catch (const std::exception& e) {
91 std::cerr << "ERROR: " << e.what() << std::endl;
92 }
93 return 0;
Alexander Afanasyev151a8552014-04-11 00:54:43 -070094}