tools: modularize ndn-autoconfig-server

refs #4158

Change-Id: I90eb570e2ca2ae611d48aeb1e456712c1d148531
diff --git a/tests/tools/ndn-autoconfig-server/program.t.cpp b/tests/tools/ndn-autoconfig-server/program.t.cpp
new file mode 100644
index 0000000..afcf908
--- /dev/null
+++ b/tests/tools/ndn-autoconfig-server/program.t.cpp
@@ -0,0 +1,146 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017,  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/>.
+ */
+
+#include "ndn-autoconfig-server/program.hpp"
+
+#include "tests/identity-management-fixture.hpp"
+#include <ndn-cxx/encoding/buffer.hpp>
+#include <ndn-cxx/util/dummy-client-face.hpp>
+
+namespace ndn {
+namespace tools {
+namespace autoconfig_server {
+namespace tests {
+
+using namespace ::nfd::tests;
+
+class AutoconfigServerFixture : public IdentityManagementFixture
+{
+public:
+  AutoconfigServerFixture()
+    : face({true, true})
+  {
+  }
+
+  void
+  initialize(const Options& options)
+  {
+    program = make_unique<Program>(options, face, m_keyChain);
+    face.processEvents(time::milliseconds(1));
+    face.sentInterests.clear();
+  }
+
+public:
+  util::DummyClientFace face;
+  unique_ptr<Program> program;
+};
+
+BOOST_AUTO_TEST_SUITE(NdnAutoconfigServer)
+BOOST_FIXTURE_TEST_SUITE(TestProgram, AutoconfigServerFixture)
+
+BOOST_AUTO_TEST_CASE(HubData)
+{
+  Options options;
+  options.hubFaceUri = FaceUri("udp4://192.0.2.1:6363");
+  this->initialize(options);
+
+  Interest interest("/localhop/ndn-autoconf/hub");
+  face.receive(interest);
+  face.processEvents(time::milliseconds(1));
+
+  BOOST_CHECK_EQUAL(face.sentData.size(), 1);
+  const Name& dataName = face.sentData.at(0).getName();
+  BOOST_CHECK_EQUAL(dataName.size(), interest.getName().size() + 1);
+  BOOST_CHECK(interest.getName().isPrefixOf(dataName));
+  BOOST_CHECK(dataName.at(-1).isVersion());
+
+  // interest2 asks for a different version, and should not be responded
+  Interest interest2(Name(interest.getName()).appendVersion(dataName.at(-1).toVersion() - 1));
+  face.receive(interest2);
+  face.processEvents(time::milliseconds(1));
+  BOOST_CHECK_EQUAL(face.sentData.size(), 1);
+}
+
+BOOST_AUTO_TEST_CASE(RoutablePrefixesDataset)
+{
+  Options options;
+  options.hubFaceUri = FaceUri("udp4://192.0.2.1:6363");
+  const int nRoutablePrefixes = 2000;
+  for (int i = 0; i < nRoutablePrefixes; ++i) {
+    options.routablePrefixes.push_back(Name("/PREFIX").appendNumber(i));
+  }
+  this->initialize(options);
+
+  Interest interest("/localhop/nfd/rib/routable-prefixes");
+  face.receive(interest);
+  face.processEvents(time::milliseconds(1));
+
+  BOOST_CHECK_EQUAL(face.sentData.size(), 1);
+  const Name& dataName0 = face.sentData.at(0).getName();
+  BOOST_CHECK_EQUAL(dataName0.size(), interest.getName().size() + 2);
+  BOOST_CHECK(interest.getName().isPrefixOf(dataName0));
+  BOOST_CHECK(dataName0.at(-2).isVersion());
+  BOOST_CHECK(dataName0.at(-1).isSegment());
+
+  while (face.sentData.back().getFinalBlockId() != face.sentData.back().getName().at(-1)) {
+    const Name& lastName = face.sentData.back().getName();
+    Interest interest2(lastName.getPrefix(-1).appendSegment(lastName.at(-1).toSegment() + 1));
+    face.receive(interest2);
+    face.processEvents(time::milliseconds(1));
+  }
+
+  auto buffer = make_shared<Buffer>();
+  for (const Data& data : face.sentData) {
+    const Block& content = data.getContent();
+    std::copy(content.value_begin(), content.value_end(), std::back_inserter(*buffer));
+  }
+
+  Block payload(tlv::Content, buffer);
+  payload.parse();
+  BOOST_CHECK_EQUAL(payload.elements_size(), nRoutablePrefixes);
+  for (int i = 0; i < nRoutablePrefixes; ++i) {
+    BOOST_CHECK_EQUAL(Name(payload.elements().at(i)), options.routablePrefixes.at(i));
+  }
+}
+
+BOOST_AUTO_TEST_CASE(RoutablePrefixesDisabled)
+{
+  Options options;
+  options.hubFaceUri = FaceUri("udp4://192.0.2.1:6363");
+  this->initialize(options);
+
+  Interest interest("/localhop/nfd/rib/routable-prefixes");
+  face.receive(interest);
+  face.processEvents(time::milliseconds(1));
+  BOOST_CHECK_EQUAL(face.sentData.size(), 0);
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestProgram
+BOOST_AUTO_TEST_SUITE_END() // NdnAutoconfigServer
+
+} // namespace tests
+} // namespace autoconfig_server
+} // namespace tools
+} // namespace ndn
diff --git a/tools/ndn-autoconfig-server.cpp b/tools/ndn-autoconfig-server.cpp
deleted file mode 100644
index 50632ee..0000000
--- a/tools/ndn-autoconfig-server.cpp
+++ /dev/null
@@ -1,219 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2016,  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/>.
- */
-
-#include "core/version.hpp"
-#include <ndn-cxx/encoding/tlv-nfd.hpp>
-#include <ndn-cxx/face.hpp>
-#include <ndn-cxx/security/key-chain.hpp>
-
-namespace ndn {
-
-const static Name LOCALHOP_HUB               = "/localhop/ndn-autoconf/hub";
-const static Name LOCALHOP_ROUTABLE_PREFIXES = "/localhop/nfd/rib/routable-prefixes";
-
-static void
-usage(const char* programName)
-{
-  std::cout << "Usage:\n" << programName  << " [-h] [-V] [-p prefix] [-p prefix] ... Uri \n"
-            << "   -h        - print usage and exit\n"
-            << "   -V        - print version number and exit\n"
-            << "   -p prefix - the local prefix of the hub\n"
-            << "\n"
-            << "   Uri - a FaceMgmt URI\n"
-            << std::endl;
-}
-
-class PrefixCollection : noncopyable
-{
-public:
-  bool
-  empty() const
-  {
-    return m_prefixes.empty();
-  }
-
-  void
-  add(const Name& prefix)
-  {
-    m_prefixes.push_back(prefix);
-  }
-
-  template<bool T>
-  size_t
-  wireEncode(EncodingImpl<T>& encoder) const
-  {
-    size_t totalLength = 0;
-
-    for (std::vector<Name>::const_reverse_iterator i = m_prefixes.rbegin();
-         i != m_prefixes.rend(); ++i) {
-      totalLength += i->wireEncode(encoder);
-    }
-
-    totalLength += encoder.prependVarNumber(totalLength);
-    totalLength += encoder.prependVarNumber(tlv::Content);
-    return totalLength;
-  }
-
-  Block
-  wireEncode() const
-  {
-    Block block;
-
-    EncodingEstimator estimator;
-    size_t estimatedSize = wireEncode(estimator);
-
-    EncodingBuffer buffer(estimatedSize);
-    wireEncode(buffer);
-
-    return buffer.block();
-  }
-
-private:
-  std::vector<Name> m_prefixes;
-};
-
-class NdnAutoconfigServer : noncopyable
-{
-public:
-  NdnAutoconfigServer(const std::string& hubFaceUri, const PrefixCollection& routablePrefixes)
-  {
-    KeyChain m_keyChain;
-
-    // pre-create hub Data
-    m_hubData = make_shared<Data>(Name(LOCALHOP_HUB).appendVersion());
-    m_hubData->setFreshnessPeriod(time::hours(1)); // 1 hour
-    m_hubData->setContent(makeBinaryBlock(tlv::nfd::Uri,
-                                          reinterpret_cast<const uint8_t*>(hubFaceUri.c_str()),
-                                          hubFaceUri.size()));
-    m_keyChain.sign(*m_hubData);
-
-    // pre-create routable prefix Data
-    if (!routablePrefixes.empty()) {
-      Name routablePrefixesDataName(LOCALHOP_ROUTABLE_PREFIXES);
-      routablePrefixesDataName.appendVersion();
-      routablePrefixesDataName.appendSegment(0);
-      m_routablePrefixesData = make_shared<Data>(routablePrefixesDataName);
-      m_routablePrefixesData->setContent(routablePrefixes.wireEncode());
-      m_routablePrefixesData->setFinalBlockId(routablePrefixesDataName.get(-1));
-      m_routablePrefixesData->setFreshnessPeriod(time::seconds(5)); // 5s
-      m_keyChain.sign(*m_routablePrefixesData);
-    }
-  }
-
-  void
-  onHubInterest(const Name& name, const Interest& interest)
-  {
-    m_face.put(*m_hubData);
-  }
-
-  void
-  onRoutablePrefixesInterest(const Name& name, const Interest& interest)
-  {
-    m_face.put(*m_routablePrefixesData);
-  }
-
-  void
-  onRegisterFailed(const Name& prefix, const std::string& reason)
-  {
-    std::cerr << "ERROR: Failed to register prefix in local hub's daemon (" <<
-              reason << ")" << std::endl;
-    m_face.shutdown();
-  }
-
-  void
-  run()
-  {
-    m_face.setInterestFilter(LOCALHOP_HUB,
-                             bind(&NdnAutoconfigServer::onHubInterest, this, _1, _2),
-                             RegisterPrefixSuccessCallback(),
-                             bind(&NdnAutoconfigServer::onRegisterFailed, this, _1, _2));
-
-    if (static_cast<bool>(m_routablePrefixesData)) {
-      m_face.setInterestFilter(LOCALHOP_ROUTABLE_PREFIXES,
-                               bind(&NdnAutoconfigServer::onRoutablePrefixesInterest, this, _1, _2),
-                               RegisterPrefixSuccessCallback(),
-                               bind(&NdnAutoconfigServer::onRegisterFailed, this, _1, _2));
-    }
-
-    m_face.processEvents();
-  }
-
-private:
-  Face m_face;
-
-  shared_ptr<Data> m_hubData;
-  shared_ptr<Data> m_routablePrefixesData;
-};
-
-int
-main(int argc, char** argv)
-{
-  const char* programName = argv[0];
-
-  PrefixCollection routablePrefixes;
-
-  int opt;
-  while ((opt = getopt(argc, argv, "hVp:")) != -1) {
-    switch (opt) {
-    case 'h':
-      usage(programName);
-      return 0;
-    case 'V':
-      std::cout << NFD_VERSION_BUILD_STRING << std::endl;
-      return 0;
-    case 'p':
-      routablePrefixes.add(Name(optarg));
-      break;
-    default:
-      usage(programName);
-      return 1;
-    }
-  }
-
-  if (argc != optind + 1) {
-    usage(programName);
-    return 1;
-  }
-
-  std::string hubFaceUri = argv[optind];
-  NdnAutoconfigServer instance(hubFaceUri, routablePrefixes);
-
-  try {
-    instance.run();
-  }
-  catch (const std::exception& error) {
-    std::cerr << "ERROR: " << error.what() << std::endl;
-    return 1;
-  }
-  return 0;
-}
-
-} // namespace ndn
-
-int
-main(int argc, char** argv)
-{
-  return ndn::main(argc, argv);
-}
diff --git a/tools/ndn-autoconfig-server/main.cpp b/tools/ndn-autoconfig-server/main.cpp
new file mode 100644
index 0000000..3806d9a
--- /dev/null
+++ b/tools/ndn-autoconfig-server/main.cpp
@@ -0,0 +1,101 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017,  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/>.
+ */
+
+#include "program.hpp"
+#include "core/extended-error-message.hpp"
+#include "core/version.hpp"
+#include <unistd.h>
+
+namespace ndn {
+namespace tools {
+namespace autoconfig_server {
+
+static void
+usage(const char* programName)
+{
+  std::cout << "Usage:\n" << programName  << " [-h] [-V] [-p prefix] [-p prefix] ... hub-face\n"
+            << "  -h        - print usage and exit\n"
+            << "  -V        - print version number and exit\n"
+            << "  -p prefix - a local prefix of the HUB\n"
+            << "\n"
+            << "  hub-face  - a FaceUri to reach the HUB\n"
+            << std::endl;
+}
+
+int
+main(int argc, char** argv)
+{
+  Options options;
+
+  int opt = -1;
+  while ((opt = ::getopt(argc, argv, "hVp:")) != -1) {
+    switch (opt) {
+    case 'h':
+      usage(argv[0]);
+      return 0;
+    case 'V':
+      std::cout << NFD_VERSION_BUILD_STRING << std::endl;
+      return 0;
+    case 'p':
+      options.routablePrefixes.emplace_back(::optarg);
+      break;
+    default:
+      usage(argv[0]);
+      return 2;
+    }
+  }
+
+  if (argc != ::optind + 1) {
+    usage(argv[0]);
+    return 2;
+  }
+
+  if (!options.hubFaceUri.parse(argv[::optind])) {
+    std::cerr << "ERROR: cannot parse HUB FaceUri\n";
+    return 2;
+  }
+
+  try {
+    Face face;
+    KeyChain keyChain;
+    Program program(options, face, keyChain);
+    program.run();
+  }
+  catch (const std::exception& e) {
+    std::cerr << ::nfd::getExtendedErrorMessage(e) << std::endl;
+    return 1;
+  }
+  return 0;
+}
+
+} // namespace autoconfig_server
+} // namespace tools
+} // namespace ndn
+
+int
+main(int argc, char** argv)
+{
+  return ndn::tools::autoconfig_server::main(argc, argv);
+}
diff --git a/tools/ndn-autoconfig-server/program.cpp b/tools/ndn-autoconfig-server/program.cpp
new file mode 100644
index 0000000..c6c3b1a
--- /dev/null
+++ b/tools/ndn-autoconfig-server/program.cpp
@@ -0,0 +1,98 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017,  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/>.
+ */
+
+#include "program.hpp"
+#include <ndn-cxx/encoding/block-helpers.hpp>
+#include <ndn-cxx/encoding/tlv.hpp>
+#include <ndn-cxx/encoding/tlv-nfd.hpp>
+
+namespace ndn {
+namespace tools {
+namespace autoconfig_server {
+
+static const Name HUB_DATA_NAME("/localhop/ndn-autoconf/hub");
+static const Name ROUTABLE_PREFIXES_DATA_PREFIX("/localhop/nfd");
+static const PartialName ROUTABLE_PREFIXES_DATA_SUFFIX("rib/routable-prefixes");
+
+Program::Program(const Options& options, Face& face, KeyChain& keyChain)
+  : m_face(face)
+  , m_keyChain(keyChain)
+  , m_dispatcher(face, keyChain)
+{
+  this->enableHubData(options.hubFaceUri);
+  if (!options.routablePrefixes.empty()) {
+    this->enableRoutablePrefixesDataset(options.routablePrefixes);
+  }
+}
+
+void
+Program::enableHubData(const FaceUri& hubFaceUri)
+{
+  std::string uri = hubFaceUri.toString();
+
+  auto data = make_shared<Data>(Name(HUB_DATA_NAME).appendVersion());
+  data->setFreshnessPeriod(time::hours(1));
+  data->setContent(makeBinaryBlock(tlv::nfd::Uri,
+                                   reinterpret_cast<const uint8_t*>(uri.data()), uri.size()));
+  m_keyChain.sign(*data);
+
+  m_face.setInterestFilter(HUB_DATA_NAME,
+    [this, data] (const Name&, const Interest& interest) {
+      if (interest.matchesData(*data)) {
+        m_face.put(*data);
+      }
+    },
+    bind(&Program::handlePrefixRegistrationFailure, this, _1, _2));
+}
+
+void
+Program::enableRoutablePrefixesDataset(const std::vector<Name>& routablePrefixes)
+{
+  m_dispatcher.addStatusDataset(ROUTABLE_PREFIXES_DATA_SUFFIX,
+    mgmt::makeAcceptAllAuthorization(),
+    [=] (const Name& prefix, const Interest& interest, mgmt::StatusDatasetContext& context) {
+      for (const Name& routablePrefix : routablePrefixes) {
+        context.append(routablePrefix.wireEncode());
+      }
+      context.end();
+    });
+  m_dispatcher.addTopPrefix(ROUTABLE_PREFIXES_DATA_PREFIX, false);
+
+  m_face.registerPrefix(Name(ROUTABLE_PREFIXES_DATA_PREFIX).append(ROUTABLE_PREFIXES_DATA_SUFFIX),
+    nullptr,
+    bind(&Program::handlePrefixRegistrationFailure, this, _1, _2));
+}
+
+void
+Program::handlePrefixRegistrationFailure(const Name& prefix, const std::string& reason)
+{
+  std::cerr << "ERROR: cannot register prefix " << prefix
+            << " (" << reason << ")" << std::endl;
+  m_face.shutdown();
+}
+
+} // namespace autoconfig_server
+} // namespace tools
+} // namespace ndn
diff --git a/tools/ndn-autoconfig-server/program.hpp b/tools/ndn-autoconfig-server/program.hpp
new file mode 100644
index 0000000..39b5bce
--- /dev/null
+++ b/tools/ndn-autoconfig-server/program.hpp
@@ -0,0 +1,75 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017,  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_SERVER_PROGRAM_HPP
+#define NFD_TOOLS_NDN_AUTOCONFIG_SERVER_PROGRAM_HPP
+
+#include "core/common.hpp"
+#include <ndn-cxx/face.hpp>
+#include <ndn-cxx/mgmt/dispatcher.hpp>
+#include <ndn-cxx/security/key-chain.hpp>
+
+namespace ndn {
+namespace tools {
+namespace autoconfig_server {
+
+struct Options
+{
+  FaceUri hubFaceUri;
+  std::vector<Name> routablePrefixes;
+};
+
+class Program : noncopyable
+{
+public:
+  Program(const Options& options, Face& face, KeyChain& keyChain);
+
+  void
+  run()
+  {
+    m_face.processEvents();
+  }
+
+private:
+  void
+  enableHubData(const FaceUri& hubFaceUri);
+
+  void
+  enableRoutablePrefixesDataset(const std::vector<Name>& routablePrefixes);
+
+  void
+  handlePrefixRegistrationFailure(const Name& prefix, const std::string& reason);
+
+private:
+  Face& m_face;
+  KeyChain& m_keyChain;
+  mgmt::Dispatcher m_dispatcher;
+};
+
+} // namespace autoconfig_server
+} // namespace tools
+} // namespace ndn
+
+#endif // NFD_TOOLS_NDN_AUTOCONFIG_SERVER_PROGRAM_HPP