src: Reorganizing source code in preparation to merge NRD code

Note that as of this commit, there are several changes in location of
compiled binaries in `build/` folder:

* `nfd` has been moved to `build/bin/nfd`
* `unit-tests` has been split into `unit-tests-core` and `unit-tests-daemon`

Change-Id: I2c830c117879edbaa5457d6423c13f0273285919
Refs: #1486
diff --git a/tests/daemon/face/tcp.cpp b/tests/daemon/face/tcp.cpp
new file mode 100644
index 0000000..07e6ec5
--- /dev/null
+++ b/tests/daemon/face/tcp.cpp
@@ -0,0 +1,440 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014  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
+ *
+ * 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 "face/tcp-factory.hpp"
+#include <ndn-cpp-dev/security/key-chain.hpp>
+
+#include "tests/test-common.hpp"
+#include "tests/limited-io.hpp"
+
+namespace nfd {
+namespace tests {
+
+BOOST_FIXTURE_TEST_SUITE(FaceTcp, BaseFixture)
+
+BOOST_AUTO_TEST_CASE(ChannelMap)
+{
+  TcpFactory factory;
+
+  shared_ptr<TcpChannel> channel1 = factory.createChannel("127.0.0.1", "20070");
+  shared_ptr<TcpChannel> channel1a = factory.createChannel("127.0.0.1", "20070");
+  BOOST_CHECK_EQUAL(channel1, channel1a);
+  BOOST_CHECK_EQUAL(channel1->getUri().toString(), "tcp4://127.0.0.1:20070");
+
+  shared_ptr<TcpChannel> channel2 = factory.createChannel("127.0.0.1", "20071");
+  BOOST_CHECK_NE(channel1, channel2);
+
+  shared_ptr<TcpChannel> channel3 = factory.createChannel("::1", "20071");
+  BOOST_CHECK_NE(channel2, channel3);
+  BOOST_CHECK_EQUAL(channel3->getUri().toString(), "tcp6://[::1]:20071");
+}
+
+class EndToEndFixture : protected BaseFixture
+{
+public:
+  void
+  channel1_onFaceCreated(const shared_ptr<Face>& newFace)
+  {
+    BOOST_CHECK(!static_cast<bool>(face1));
+    face1 = newFace;
+    face1->onReceiveInterest +=
+      bind(&EndToEndFixture::face1_onReceiveInterest, this, _1);
+    face1->onReceiveData +=
+      bind(&EndToEndFixture::face1_onReceiveData, this, _1);
+    face1->onFail +=
+      bind(&EndToEndFixture::face1_onFail, this);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  channel1_onConnectFailed(const std::string& reason)
+  {
+    BOOST_CHECK_MESSAGE(false, reason);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  face1_onReceiveInterest(const Interest& interest)
+  {
+    face1_receivedInterests.push_back(interest);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  face1_onReceiveData(const Data& data)
+  {
+    face1_receivedDatas.push_back(data);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  face1_onFail()
+  {
+    face1.reset();
+    limitedIo.afterOp();
+  }
+
+  void
+  channel2_onFaceCreated(const shared_ptr<Face>& newFace)
+  {
+    BOOST_CHECK(!static_cast<bool>(face2));
+    face2 = newFace;
+    face2->onReceiveInterest +=
+      bind(&EndToEndFixture::face2_onReceiveInterest, this, _1);
+    face2->onReceiveData +=
+      bind(&EndToEndFixture::face2_onReceiveData, this, _1);
+    face2->onFail +=
+      bind(&EndToEndFixture::face2_onFail, this);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  channel2_onConnectFailed(const std::string& reason)
+  {
+    BOOST_CHECK_MESSAGE(false, reason);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  face2_onReceiveInterest(const Interest& interest)
+  {
+    face2_receivedInterests.push_back(interest);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  face2_onReceiveData(const Data& data)
+  {
+    face2_receivedDatas.push_back(data);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  face2_onFail()
+  {
+    face2.reset();
+    limitedIo.afterOp();
+  }
+
+  void
+  channel_onFaceCreated(const shared_ptr<Face>& newFace)
+  {
+    faces.push_back(newFace);
+    limitedIo.afterOp();
+  }
+
+  void
+  channel_onConnectFailed(const std::string& reason)
+  {
+    BOOST_CHECK_MESSAGE(false, reason);
+
+    limitedIo.afterOp();
+  }
+
+  void
+  checkFaceList(size_t shouldBe)
+  {
+    BOOST_CHECK_EQUAL(faces.size(), shouldBe);
+  }
+
+public:
+  LimitedIo limitedIo;
+
+  shared_ptr<Face> face1;
+  std::vector<Interest> face1_receivedInterests;
+  std::vector<Data> face1_receivedDatas;
+  shared_ptr<Face> face2;
+  std::vector<Interest> face2_receivedInterests;
+  std::vector<Data> face2_receivedDatas;
+
+  std::list< shared_ptr<Face> > faces;
+};
+
+BOOST_FIXTURE_TEST_CASE(EndToEnd4, EndToEndFixture)
+{
+  TcpFactory factory1;
+
+  shared_ptr<TcpChannel> channel1 = factory1.createChannel("127.0.0.1", "20070");
+  factory1.createChannel("127.0.0.1", "20071");
+
+  BOOST_CHECK_EQUAL(channel1->isListening(), false);
+
+  channel1->listen(bind(&EndToEndFixture::channel1_onFaceCreated,   this, _1),
+                   bind(&EndToEndFixture::channel1_onConnectFailed, this, _1));
+
+  BOOST_CHECK_EQUAL(channel1->isListening(), true);
+
+  TcpFactory factory2;
+
+  shared_ptr<TcpChannel> channel2 = factory2.createChannel("127.0.0.2", "20070");
+  factory2.createChannel("127.0.0.2", "20071");
+
+  factory2.createFace(FaceUri("tcp://127.0.0.1:20070"),
+                      bind(&EndToEndFixture::channel2_onFaceCreated, this, _1),
+                      bind(&EndToEndFixture::channel2_onConnectFailed, this, _1));
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(2, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot connect or cannot accept connection");
+
+  BOOST_REQUIRE(static_cast<bool>(face1));
+  BOOST_REQUIRE(static_cast<bool>(face2));
+
+  BOOST_CHECK(face1->isOnDemand());
+  BOOST_CHECK(!face2->isOnDemand());
+
+  BOOST_CHECK_EQUAL(face2->getRemoteUri().toString(), "tcp4://127.0.0.1:20070");
+  BOOST_CHECK_EQUAL(face1->getLocalUri().toString(), "tcp4://127.0.0.1:20070");
+  // face1 has an unknown remoteUri, since the source port is automatically chosen by OS
+
+  BOOST_CHECK_EQUAL(face1->isLocal(), true);
+  BOOST_CHECK_EQUAL(face2->isLocal(), true);
+
+  BOOST_CHECK_EQUAL(static_cast<bool>(dynamic_pointer_cast<LocalFace>(face1)), true);
+  BOOST_CHECK_EQUAL(static_cast<bool>(dynamic_pointer_cast<LocalFace>(face2)), true);
+
+  // integrated tests needs to check that TcpFace for non-loopback fails these tests...
+
+  Interest interest1("ndn:/TpnzGvW9R");
+  Data     data1    ("ndn:/KfczhUqVix");
+  data1.setContent(0, 0);
+  Interest interest2("ndn:/QWiIMfj5sL");
+  Data     data2    ("ndn:/XNBV796f");
+  data2.setContent(0, 0);
+
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  // set fake signature on data1 and data2
+  data1.setSignature(fakeSignature);
+  data2.setSignature(fakeSignature);
+
+  face1->sendInterest(interest1);
+  face1->sendInterest(interest1);
+  face1->sendInterest(interest1);
+  face1->sendData    (data1    );
+  face2->sendInterest(interest2);
+  face2->sendData    (data2    );
+  face2->sendData    (data2    );
+  face2->sendData    (data2    );
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(8, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot send or receive Interest/Data packets");
+
+
+  BOOST_REQUIRE_EQUAL(face1_receivedInterests.size(), 1);
+  BOOST_REQUIRE_EQUAL(face1_receivedDatas    .size(), 3);
+  BOOST_REQUIRE_EQUAL(face2_receivedInterests.size(), 3);
+  BOOST_REQUIRE_EQUAL(face2_receivedDatas    .size(), 1);
+
+  BOOST_CHECK_EQUAL(face1_receivedInterests[0].getName(), interest2.getName());
+  BOOST_CHECK_EQUAL(face1_receivedDatas    [0].getName(), data2.getName());
+  BOOST_CHECK_EQUAL(face2_receivedInterests[0].getName(), interest1.getName());
+  BOOST_CHECK_EQUAL(face2_receivedDatas    [0].getName(), data1.getName());
+
+  const FaceCounters& counters1 = face1->getCounters();
+  BOOST_CHECK_EQUAL(counters1.getNInInterests() , 1);
+  BOOST_CHECK_EQUAL(counters1.getNInDatas()     , 3);
+  BOOST_CHECK_EQUAL(counters1.getNOutInterests(), 3);
+  BOOST_CHECK_EQUAL(counters1.getNOutDatas()    , 1);
+
+  const FaceCounters& counters2 = face2->getCounters();
+  BOOST_CHECK_EQUAL(counters2.getNInInterests() , 3);
+  BOOST_CHECK_EQUAL(counters2.getNInDatas()     , 1);
+  BOOST_CHECK_EQUAL(counters2.getNOutInterests(), 1);
+  BOOST_CHECK_EQUAL(counters2.getNOutDatas()    , 3);
+}
+
+BOOST_FIXTURE_TEST_CASE(EndToEnd6, EndToEndFixture)
+{
+  TcpFactory factory1;
+
+  shared_ptr<TcpChannel> channel1 = factory1.createChannel("::1", "20070");
+  shared_ptr<TcpChannel> channel2 = factory1.createChannel("::1", "20071");
+
+  channel1->listen(bind(&EndToEndFixture::channel1_onFaceCreated,   this, _1),
+                   bind(&EndToEndFixture::channel1_onConnectFailed, this, _1));
+
+  TcpFactory factory2;
+
+  factory2.createChannel("::2", "20070");
+
+  factory2.createFace(FaceUri("tcp://[::1]:20070"),
+                      bind(&EndToEndFixture::channel2_onFaceCreated, this, _1),
+                      bind(&EndToEndFixture::channel2_onConnectFailed, this, _1));
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(2, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot connect or cannot accept connection");
+
+  BOOST_REQUIRE(static_cast<bool>(face1));
+  BOOST_REQUIRE(static_cast<bool>(face2));
+
+  BOOST_CHECK_EQUAL(face2->getRemoteUri().toString(), "tcp6://[::1]:20070");
+  BOOST_CHECK_EQUAL(face1->getLocalUri().toString(), "tcp6://[::1]:20070");
+  // face1 has an unknown remoteUri, since the source port is automatically chosen by OS
+
+  BOOST_CHECK_EQUAL(face1->isLocal(), true);
+  BOOST_CHECK_EQUAL(face2->isLocal(), true);
+
+  BOOST_CHECK_EQUAL(static_cast<bool>(dynamic_pointer_cast<LocalFace>(face1)), true);
+  BOOST_CHECK_EQUAL(static_cast<bool>(dynamic_pointer_cast<LocalFace>(face2)), true);
+
+  // integrated tests needs to check that TcpFace for non-loopback fails these tests...
+
+  Interest interest1("ndn:/TpnzGvW9R");
+  Data     data1    ("ndn:/KfczhUqVix");
+  data1.setContent(0, 0);
+  Interest interest2("ndn:/QWiIMfj5sL");
+  Data     data2    ("ndn:/XNBV796f");
+  data2.setContent(0, 0);
+
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  // set fake signature on data1 and data2
+  data1.setSignature(fakeSignature);
+  data2.setSignature(fakeSignature);
+
+  face1->sendInterest(interest1);
+  face1->sendData    (data1    );
+  face2->sendInterest(interest2);
+  face2->sendData    (data2    );
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(4, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot send or receive Interest/Data packets");
+
+
+  BOOST_REQUIRE_EQUAL(face1_receivedInterests.size(), 1);
+  BOOST_REQUIRE_EQUAL(face1_receivedDatas    .size(), 1);
+  BOOST_REQUIRE_EQUAL(face2_receivedInterests.size(), 1);
+  BOOST_REQUIRE_EQUAL(face2_receivedDatas    .size(), 1);
+
+  BOOST_CHECK_EQUAL(face1_receivedInterests[0].getName(), interest2.getName());
+  BOOST_CHECK_EQUAL(face1_receivedDatas    [0].getName(), data2.getName());
+  BOOST_CHECK_EQUAL(face2_receivedInterests[0].getName(), interest1.getName());
+  BOOST_CHECK_EQUAL(face2_receivedDatas    [0].getName(), data1.getName());
+}
+
+BOOST_FIXTURE_TEST_CASE(MultipleAccepts, EndToEndFixture)
+{
+  TcpFactory factory;
+
+  shared_ptr<TcpChannel> channel1 = factory.createChannel("127.0.0.1", "20070");
+  shared_ptr<TcpChannel> channel2 = factory.createChannel("127.0.0.1", "20071");
+
+  channel1->listen(bind(&EndToEndFixture::channel_onFaceCreated,   this, _1),
+                   bind(&EndToEndFixture::channel_onConnectFailed, this, _1));
+
+  channel2->connect("127.0.0.1", "20070",
+                    bind(&EndToEndFixture::channel_onFaceCreated, this, _1),
+                    bind(&EndToEndFixture::channel_onConnectFailed, this, _1),
+                    time::seconds(4)); // very short timeout
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(2, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot connect or cannot accept connection");
+
+
+  BOOST_CHECK_EQUAL(faces.size(), 2);
+
+  shared_ptr<TcpChannel> channel3 = factory.createChannel("127.0.0.1", "20072");
+  channel3->connect("127.0.0.1", "20070",
+                    bind(&EndToEndFixture::channel_onFaceCreated, this, _1),
+                    bind(&EndToEndFixture::channel_onConnectFailed, this, _1),
+                    time::seconds(4)); // very short timeout
+
+
+  shared_ptr<TcpChannel> channel4 = factory.createChannel("127.0.0.1", "20073");
+
+  BOOST_CHECK_NE(channel3, channel4);
+
+  scheduler::schedule(time::seconds(1),
+      bind(&TcpChannel::connect, channel4, "127.0.0.1", "20070",
+          // does not work without static_cast
+           static_cast<TcpChannel::FaceCreatedCallback>(
+               bind(&EndToEndFixture::channel_onFaceCreated, this, _1)),
+           static_cast<TcpChannel::ConnectFailedCallback>(
+               bind(&EndToEndFixture::channel_onConnectFailed, this, _1)),
+           time::seconds(4)));
+
+  scheduler::schedule(time::milliseconds(500),
+                      bind(&EndToEndFixture::checkFaceList, this, 4));
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(4,// 2 connects and 2 accepts
+                      time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot connect or cannot accept multiple connections");
+
+  BOOST_CHECK_EQUAL(faces.size(), 6);
+}
+
+
+BOOST_FIXTURE_TEST_CASE(FaceClosing, EndToEndFixture)
+{
+  TcpFactory factory;
+
+  shared_ptr<TcpChannel> channel1 = factory.createChannel("127.0.0.1", "20070");
+  shared_ptr<TcpChannel> channel2 = factory.createChannel("127.0.0.1", "20071");
+
+  channel1->listen(bind(&EndToEndFixture::channel1_onFaceCreated,   this, _1),
+                   bind(&EndToEndFixture::channel1_onConnectFailed, this, _1));
+
+  channel2->connect("127.0.0.1", "20070",
+                    bind(&EndToEndFixture::channel2_onFaceCreated, this, _1),
+                    bind(&EndToEndFixture::channel2_onConnectFailed, this, _1),
+                    time::seconds(4)); // very short timeout
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(2, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "TcpChannel error: cannot connect or cannot accept connection");
+
+  BOOST_CHECK_EQUAL(channel1->size(), 1);
+  BOOST_CHECK_EQUAL(channel2->size(), 1);
+
+  BOOST_REQUIRE(static_cast<bool>(face1));
+  BOOST_CHECK(static_cast<bool>(face2));
+
+  // Face::close must be invoked during io run to be counted as an op
+  scheduler::schedule(time::milliseconds(100), bind(&Face::close, face1));
+
+  BOOST_CHECK_MESSAGE(limitedIo.run(2, time::seconds(10)) == LimitedIo::EXCEED_OPS,
+                      "FaceClosing error: cannot properly close faces");
+
+  // both faces should get closed
+  BOOST_CHECK(!static_cast<bool>(face1));
+  BOOST_CHECK(!static_cast<bool>(face2));
+
+  BOOST_CHECK_EQUAL(channel1->size(), 0);
+  BOOST_CHECK_EQUAL(channel2->size(), 0);
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace nfd