1 files changed, 224 insertions, 0 deletions
diff --git a/net.cpp b/net.cpp
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+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum 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.
+
+	cpp-ethereum 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 cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file net.cpp
+ * @author Alex Leverington <nessence@gmail.com>
+ * @date 2014
+ */
+
+#include <boost/test/unit_test.hpp>
+
+#include <libdevcore/Worker.h>
+#include <libdevcrypto/Common.h>
+#include <libp2p/UDP.h>
+#include <libp2p/NodeTable.h>
+using namespace std;
+using namespace dev;
+using namespace dev::p2p;
+namespace ba = boost::asio;
+namespace bi = ba::ip;
+
+BOOST_AUTO_TEST_SUITE(net)
+
+/**
+ * Only used for testing. Not useful beyond tests.
+ */
+class TestHost: public Worker
+{
+public:
+	TestHost(): Worker("test",0), m_io() {};
+	virtual ~TestHost() { m_io.stop(); stopWorking(); }
+	void start() { startWorking(); }
+	void doWork() { m_io.run(); }
+	void doneWorking() { m_io.reset(); m_io.poll(); m_io.reset(); }
+
+protected:
+	ba::io_service m_io;
+};
+
+struct TestNodeTable: public NodeTable
+{
+	/// Constructor
+	TestNodeTable(ba::io_service& _io, KeyPair _alias, uint16_t _port = 30300): NodeTable(_io, _alias, _port) {}
+
+	static std::vector<std::pair<KeyPair,unsigned>> createTestNodes(unsigned _count)
+	{
+		std::vector<std::pair<KeyPair,unsigned>> ret;
+		asserts(_count < 1000);
+		static uint16_t s_basePort = 30500;
+
+		ret.clear();
+		for (unsigned i = 0; i < _count; i++)
+		{
+			KeyPair k = KeyPair::create();
+			ret.push_back(make_pair(k,s_basePort+i));
+		}
+
+		return std::move(ret);
+	}
+
+	void pingTestNodes(std::vector<std::pair<KeyPair,unsigned>> const& _testNodes)
+	{
+		bi::address ourIp = bi::address::from_string("127.0.0.1");
+		for (auto& n: _testNodes)
+		{
+			ping(bi::udp::endpoint(ourIp, n.second));
+			this_thread::sleep_for(chrono::milliseconds(2));
+		}
+	}
+
+	void populateTestNodes(std::vector<std::pair<KeyPair,unsigned>> const& _testNodes, size_t _count = 0)
+	{
+		if (!_count)
+			_count = _testNodes.size();
+
+		bi::address ourIp = bi::address::from_string("127.0.0.1");
+		for (auto& n: _testNodes)
+			if (_count--)
+				noteActiveNode(n.first.pub(), bi::udp::endpoint(ourIp, n.second));
+			else
+				break;
+	}
+
+	void reset()
+	{
+		Guard l(x_state);
+		for (auto& n: m_state) n.nodes.clear();
+	}
+};
+
+/**
+ * Only used for testing. Not useful beyond tests.
+ */
+struct TestNodeTableHost: public TestHost
+{
+	TestNodeTableHost(unsigned _count = 8): m_alias(KeyPair::create()), nodeTable(new TestNodeTable(m_io, m_alias)), testNodes(TestNodeTable::createTestNodes(_count)) {};
+	~TestNodeTableHost() { m_io.stop(); stopWorking(); }
+
+	void setup() { for (auto n: testNodes) nodeTables.push_back(make_shared<TestNodeTable>(m_io,n.first,n.second)); }
+
+	void pingAll() { for (auto& t: nodeTables) t->pingTestNodes(testNodes); }
+
+	void populateAll(size_t _count = 0) { for (auto& t: nodeTables) t->populateTestNodes(testNodes, _count); }
+
+	void populate(size_t _count = 0) { nodeTable->populateTestNodes(testNodes, _count); }
+
+	KeyPair m_alias;
+	shared_ptr<TestNodeTable> nodeTable;
+	std::vector<std::pair<KeyPair,unsigned>> testNodes; // keypair and port
+	std::vector<shared_ptr<TestNodeTable>> nodeTables;
+};
+
+class TestUDPSocket: UDPSocketEvents, public TestHost
+{
+public:
+	TestUDPSocket(): m_socket(new UDPSocket<TestUDPSocket, 1024>(m_io, *this, 30300)) {}
+
+	void onDisconnected(UDPSocketFace*) {};
+	void onReceived(UDPSocketFace*, bi::udp::endpoint const&, bytesConstRef _packet) { if (_packet.toString() == "AAAA") success = true; }
+
+	shared_ptr<UDPSocket<TestUDPSocket, 1024>> m_socket;
+
+	bool success = false;
+};
+
+BOOST_AUTO_TEST_CASE(test_neighbours_packet)
+{
+	KeyPair k = KeyPair::create();
+	std::vector<std::pair<KeyPair,unsigned>> testNodes(TestNodeTable::createTestNodes(16));
+	bi::udp::endpoint to(boost::asio::ip::address::from_string("127.0.0.1"), 30000);
+
+	Neighbours out(to);
+	for (auto n: testNodes)
+	{
+		Neighbours::Node node;
+		node.ipAddress = boost::asio::ip::address::from_string("127.0.0.1").to_string();
+		node.port = n.second;
+		node.node = n.first.pub();
+		out.nodes.push_back(node);
+	}
+	out.sign(k.sec());
+
+	bytesConstRef packet(out.data.data(), out.data.size());
+	bytesConstRef rlpBytes(packet.cropped(h256::size + Signature::size + 1));
+	Neighbours in = Neighbours::fromBytesConstRef(to, rlpBytes);
+	int count = 0;
+	for (auto n: in.nodes)
+	{
+		BOOST_REQUIRE_EQUAL(testNodes[count].second, n.port);
+		BOOST_REQUIRE_EQUAL(testNodes[count].first.pub(), n.node);
+		BOOST_REQUIRE_EQUAL(sha3(testNodes[count].first.pub()), sha3(n.node));
+		count++;
+	}
+}
+
+BOOST_AUTO_TEST_CASE(test_findnode_neighbours)
+{
+	// Executing findNode should result in a list which is serialized
+	// into Neighbours packet. Neighbours packet should then be deserialized
+	// into the same list of nearest nodes.
+}
+
+BOOST_AUTO_TEST_CASE(test_windows_template)
+{
+	bi::udp::endpoint ep;
+	PingNode p(ep);
+}
+
+BOOST_AUTO_TEST_CASE(kademlia)
+{
+	// Not yet a 'real' test.
+	TestNodeTableHost node(8);
+	node.start();
+	node.nodeTable->discover(); // ideally, joining with empty node table logs warning we can check for
+	node.setup();
+	node.populate();
+	clog << "NodeTable:\n" << *node.nodeTable.get() << endl;
+
+	node.populateAll();
+	clog << "NodeTable:\n" << *node.nodeTable.get() << endl;
+
+	auto nodes = node.nodeTable->nodes();
+	nodes.sort();
+
+	node.nodeTable->reset();
+	clog << "NodeTable:\n" << *node.nodeTable.get() << endl;
+
+	node.populate(1);
+	clog << "NodeTable:\n" << *node.nodeTable.get() << endl;
+
+	node.nodeTable->discover();
+	this_thread::sleep_for(chrono::milliseconds(2000));
+	clog << "NodeTable:\n" << *node.nodeTable.get() << endl;
+
+	BOOST_REQUIRE_EQUAL(node.nodeTable->count(), 8);
+
+	auto netNodes = node.nodeTable->nodes();
+	netNodes.sort();
+
+}
+
+BOOST_AUTO_TEST_CASE(test_udp_once)
+{
+	UDPDatagram d(bi::udp::endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 30300), bytes({65,65,65,65}));
+	TestUDPSocket a; a.m_socket->connect(); a.start();
+	a.m_socket->send(d);
+	this_thread::sleep_for(chrono::seconds(1));
+	BOOST_REQUIRE_EQUAL(true, a.success);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+