Pass along errors about DNS resolution.

author: Kevin Smith <git@kismith.co.uk> 2012-03-03 11:56:45 (GMT)
committer: Kevin Smith <git@kismith.co.uk> 2012-03-04 16:01:01 (GMT)
commit: 4b6694377e3a0308009bdf90be0a4e0de463b215 (patch)
tree: 86b860395d040c38774dfa4400979f9687dff8ae /Swiften/Network
parent: fde71bd59b1412ae475c06f2d4100ce088e86af6 (diff)
download: swift-4b6694377e3a0308009bdf90be0a4e0de463b215.zip
swift-4b6694377e3a0308009bdf90be0a4e0de463b215.tar.bz2
6 files changed, 75 insertions, 26 deletions
diff --git a/Swiften/Network/ChainedConnector.cpp b/Swiften/Network/ChainedConnector.cpp
index 1a38e53..0a1283f 100644
--- a/Swiften/Network/ChainedConnector.cpp
+++ b/Swiften/Network/ChainedConnector.cpp
@@ -41,18 +41,18 @@ void ChainedConnector::start() {
 
 void ChainedConnector::stop() {
 	if (currentConnector) {
-		currentConnector->onConnectFinished.disconnect(boost::bind(&ChainedConnector::handleConnectorFinished, this, _1));
+		currentConnector->onConnectFinished.disconnect(boost::bind(&ChainedConnector::handleConnectorFinished, this, _1, _2));
 		currentConnector->stop();
 		currentConnector.reset();
 	}
-	finish(boost::shared_ptr<Connection>());
+	finish(boost::shared_ptr<Connection>(), boost::shared_ptr<Error>());
 }
 
 void ChainedConnector::tryNextConnectionFactory() {
 	assert(!currentConnector);
 	if (connectionFactoryQueue.empty()) {
 		SWIFT_LOG(debug) << "No more connection factories" << std::endl;
-		finish(boost::shared_ptr<Connection>());
+		finish(boost::shared_ptr<Connection>(), lastError);
 	}
 	else {
 		ConnectionFactory* connectionFactory = connectionFactoryQueue.front();
@@ -60,23 +60,24 @@ void ChainedConnector::tryNextConnectionFactory() {
 		connectionFactoryQueue.pop_front();
 		currentConnector = Connector::create(hostname, resolver, connectionFactory, timerFactory);
 		currentConnector->setTimeoutMilliseconds(timeoutMilliseconds);
-		currentConnector->onConnectFinished.connect(boost::bind(&ChainedConnector::handleConnectorFinished, this, _1));
+		currentConnector->onConnectFinished.connect(boost::bind(&ChainedConnector::handleConnectorFinished, this, _1, _2));
 		currentConnector->start();
 	}
 }
 
-void ChainedConnector::handleConnectorFinished(boost::shared_ptr<Connection> connection) {
+void ChainedConnector::handleConnectorFinished(boost::shared_ptr<Connection> connection, boost::shared_ptr<Error> error) {
 	SWIFT_LOG(debug) << "Connector finished" << std::endl;
-	currentConnector->onConnectFinished.disconnect(boost::bind(&ChainedConnector::handleConnectorFinished, this, _1));
+	currentConnector->onConnectFinished.disconnect(boost::bind(&ChainedConnector::handleConnectorFinished, this, _1, _2));
+	lastError = error;
 	currentConnector.reset();
 	if (connection) {
-		finish(connection);
+		finish(connection, error);
 	}
 	else {
 		tryNextConnectionFactory();
 	}
 }
 
-void ChainedConnector::finish(boost::shared_ptr<Connection> connection) {
-	onConnectFinished(connection);
+void ChainedConnector::finish(boost::shared_ptr<Connection> connection, boost::shared_ptr<Error> error) {
+	onConnectFinished(connection, error);
 }
diff --git a/Swiften/Network/ChainedConnector.h b/Swiften/Network/ChainedConnector.h
index 15b17f3..12ef023 100644
--- a/Swiften/Network/ChainedConnector.h
+++ b/Swiften/Network/ChainedConnector.h
@@ -12,6 +12,7 @@
 #include <boost/shared_ptr.hpp>
 
 #include <Swiften/Base/boost_bsignals.h>
+#include <Swiften/Base/Error.h>
 
 namespace Swift {
 	class Connection;
@@ -28,12 +29,12 @@ namespace Swift {
 			void start();
 			void stop();
 
-			boost::signal<void (boost::shared_ptr<Connection>)> onConnectFinished;
+			boost::signal<void (boost::shared_ptr<Connection>, boost::shared_ptr<Error>)> onConnectFinished;
 
 		private:
-			void finish(boost::shared_ptr<Connection> connection);
+			void finish(boost::shared_ptr<Connection> connection, boost::shared_ptr<Error>);
 			void tryNextConnectionFactory();
-			void handleConnectorFinished(boost::shared_ptr<Connection>);
+			void handleConnectorFinished(boost::shared_ptr<Connection>, boost::shared_ptr<Error>);
 
 		private:
 			std::string hostname;
@@ -43,5 +44,6 @@ namespace Swift {
 			int timeoutMilliseconds;
 			std::deque<ConnectionFactory*> connectionFactoryQueue;
 			boost::shared_ptr<Connector> currentConnector;
+			boost::shared_ptr<Error> lastError;
 	};
 };
diff --git a/Swiften/Network/Connector.cpp b/Swiften/Network/Connector.cpp
index 378875b..5e7f8d9 100644
--- a/Swiften/Network/Connector.cpp
+++ b/Swiften/Network/Connector.cpp
@@ -17,7 +17,7 @@
 
 namespace Swift {
 
-Connector::Connector(const std::string& hostname, DomainNameResolver* resolver, ConnectionFactory* connectionFactory, TimerFactory* timerFactory, int defaultPort) : hostname(hostname), resolver(resolver), connectionFactory(connectionFactory), timerFactory(timerFactory), defaultPort(defaultPort), timeoutMilliseconds(0), queriedAllServices(true) {
+Connector::Connector(const std::string& hostname, DomainNameResolver* resolver, ConnectionFactory* connectionFactory, TimerFactory* timerFactory, int defaultPort) : hostname(hostname), resolver(resolver), connectionFactory(connectionFactory), timerFactory(timerFactory), defaultPort(defaultPort), timeoutMilliseconds(0), queriedAllServices(true), foundSomeDNS(false) {
 }
 
 void Connector::setTimeoutMilliseconds(int milliseconds) {
@@ -56,6 +56,9 @@ void Connector::handleServiceQueryResult(const std::vector<DomainNameServiceQuer
 	SWIFT_LOG(debug) << result.size() << " SRV result(s)" << std::endl;
 	serviceQueryResults = std::deque<DomainNameServiceQuery::Result>(result.begin(), result.end());
 	serviceQuery.reset();
+	if (!serviceQueryResults.empty()) {
+		foundSomeDNS = true;
+	}
 	tryNextServiceOrFallback();
 }
 
@@ -86,6 +89,7 @@ void Connector::handleAddressQueryResult(const std::vector<HostAddress>& address
 		tryNextServiceOrFallback();
 	}
 	else {
+		foundSomeDNS = true;
 		addressQueryResults = std::deque<HostAddress>(addresses.begin(), addresses.end());
 		tryNextAddress();
 	}
@@ -160,7 +164,7 @@ void Connector::finish(boost::shared_ptr<Connection> connection) {
 		currentConnection->onConnectFinished.disconnect(boost::bind(&Connector::handleConnectionConnectFinished, shared_from_this(), _1));
 		currentConnection.reset();
 	}
-	onConnectFinished(connection);
+	onConnectFinished(connection, (connection || foundSomeDNS) ? boost::shared_ptr<Error>() : boost::make_shared<DomainNameResolveError>());
 }
 
 void Connector::handleTimeout() {
diff --git a/Swiften/Network/Connector.h b/Swiften/Network/Connector.h
index 8f2c359..bf0efaf 100644
--- a/Swiften/Network/Connector.h
+++ b/Swiften/Network/Connector.h
@@ -35,7 +35,7 @@ namespace Swift {
 			void start();
 			void stop();
 
-			boost::signal<void (boost::shared_ptr<Connection>)> onConnectFinished;
+			boost::signal<void (boost::shared_ptr<Connection>, boost::shared_ptr<Error>)> onConnectFinished;
 
 		private:
 			Connector(const std::string& hostname, DomainNameResolver*, ConnectionFactory*, TimerFactory*, int defaultPort);
@@ -67,5 +67,6 @@ namespace Swift {
 			std::deque<HostAddress> addressQueryResults;
 			bool queriedAllServices;
 			boost::shared_ptr<Connection> currentConnection;
+			bool foundSomeDNS;
 	};
 };
diff --git a/Swiften/Network/UnitTest/ChainedConnectorTest.cpp b/Swiften/Network/UnitTest/ChainedConnectorTest.cpp
index c7d23da..a2fceb9 100644
--- a/Swiften/Network/UnitTest/ChainedConnectorTest.cpp
+++ b/Swiften/Network/UnitTest/ChainedConnectorTest.cpp
@@ -17,6 +17,7 @@
 #include <Swiften/Network/StaticDomainNameResolver.h>
 #include <Swiften/Network/DummyTimerFactory.h>
 #include <Swiften/EventLoop/DummyEventLoop.h>
+#include <Swiften/Network/DomainNameResolveError.h>
 
 using namespace Swift;
 
@@ -25,11 +26,13 @@ class ChainedConnectorTest : public CppUnit::TestFixture {
 		CPPUNIT_TEST(testConnect_FirstConnectorSucceeds);
 		CPPUNIT_TEST(testConnect_SecondConnectorSucceeds);
 		CPPUNIT_TEST(testConnect_NoConnectorSucceeds);
+		CPPUNIT_TEST(testConnect_NoDNS);
 		CPPUNIT_TEST(testStop);
 		CPPUNIT_TEST_SUITE_END();
 
 	public:
 		void setUp() {
+			error.reset();
 			host = HostAddressPort(HostAddress("1.1.1.1"), 1234);
 			eventLoop = new DummyEventLoop();
 			resolver = new StaticDomainNameResolver(eventLoop);
@@ -58,6 +61,7 @@ class ChainedConnectorTest : public CppUnit::TestFixture {
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
 			CPPUNIT_ASSERT_EQUAL(1, boost::dynamic_pointer_cast<MockConnection>(connections[0])->id);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_SecondConnectorSucceeds() {
@@ -71,6 +75,7 @@ class ChainedConnectorTest : public CppUnit::TestFixture {
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
 			CPPUNIT_ASSERT_EQUAL(2, boost::dynamic_pointer_cast<MockConnection>(connections[0])->id);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_NoConnectorSucceeds() {
@@ -83,6 +88,24 @@ class ChainedConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
+		}
+
+		void testConnect_NoDNS() {
+			/* Reset resolver so there's no record */
+			delete resolver;
+			resolver = new StaticDomainNameResolver(eventLoop);
+			boost::shared_ptr<ChainedConnector> testling(createConnector());
+			connectionFactory1->connects = false;
+			connectionFactory2->connects = false;
+
+			testling->start();
+			//testling->stop();
+			eventLoop->processEvents();
+
+			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
+			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testStop() {
@@ -104,11 +127,12 @@ class ChainedConnectorTest : public CppUnit::TestFixture {
 			factories.push_back(connectionFactory1);
 			factories.push_back(connectionFactory2);
 			boost::shared_ptr<ChainedConnector> connector = boost::make_shared<ChainedConnector>("foo.com", resolver, factories, timerFactory);
-			connector->onConnectFinished.connect(boost::bind(&ChainedConnectorTest::handleConnectorFinished, this, _1));
+			connector->onConnectFinished.connect(boost::bind(&ChainedConnectorTest::handleConnectorFinished, this, _1, _2));
 			return connector;
 		}
 
-		void handleConnectorFinished(boost::shared_ptr<Connection> connection) {
+		void handleConnectorFinished(boost::shared_ptr<Connection> connection, boost::shared_ptr<Error> resultError) {
+			error = resultError;
 			boost::shared_ptr<MockConnection> c(boost::dynamic_pointer_cast<MockConnection>(connection));
 			if (connection) {
 				assert(c);
@@ -156,6 +180,7 @@ class ChainedConnectorTest : public CppUnit::TestFixture {
 		MockConnectionFactory* connectionFactory2;
 		DummyTimerFactory* timerFactory;
 		std::vector< boost::shared_ptr<MockConnection> > connections;
+		boost::shared_ptr<Error> error;
 };
 
 CPPUNIT_TEST_SUITE_REGISTRATION(ChainedConnectorTest);
diff --git a/Swiften/Network/UnitTest/ConnectorTest.cpp b/Swiften/Network/UnitTest/ConnectorTest.cpp
index 6488e67..67270be 100644
--- a/Swiften/Network/UnitTest/ConnectorTest.cpp
+++ b/Swiften/Network/UnitTest/ConnectorTest.cpp
@@ -17,6 +17,7 @@
 #include <Swiften/Network/StaticDomainNameResolver.h>
 #include <Swiften/Network/DummyTimerFactory.h>
 #include <Swiften/EventLoop/DummyEventLoop.h>
+#include <Swiften/Network/DomainNameAddressQuery.h>
 
 using namespace Swift;
 
@@ -67,6 +68,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
 			CPPUNIT_ASSERT(host1 == *(connections[0]->hostAddressPort));
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_NoSRVHost() {
@@ -79,6 +81,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
 			CPPUNIT_ASSERT(host3 == *(connections[0]->hostAddressPort));
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_FirstAddressHostFails() {
@@ -97,6 +100,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
 			CPPUNIT_ASSERT(HostAddressPort(address2, 1234) == *(connections[0]->hostAddressPort));
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_NoHosts() {
@@ -107,6 +111,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_FirstSRVHostFails() {
@@ -120,6 +125,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(host2 == *(connections[0]->hostAddressPort));
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_AllSRVHostsFailWithoutFallbackHost() {
@@ -134,6 +140,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_AllSRVHostsFailWithFallbackHost() {
@@ -150,6 +157,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
 			CPPUNIT_ASSERT(host3 == *(connections[0]->hostAddressPort));
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_SRVAndFallbackHostsFail() {
@@ -164,6 +172,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_TimeoutDuringResolve() {
@@ -177,6 +186,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 			eventLoop->processEvents();
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
+			CPPUNIT_ASSERT(boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 			CPPUNIT_ASSERT(!connections[0]);
 		}
 
@@ -193,6 +203,7 @@ class ConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testConnect_NoTimeout() {
@@ -207,19 +218,21 @@ class ConnectorTest : public CppUnit::TestFixture {
 
 			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
 			CPPUNIT_ASSERT(connections[0]);
+			CPPUNIT_ASSERT(!boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testStop_DuringSRVQuery() {
-				Connector::ref testling(createConnector());
-				resolver->addXMPPClientService("foo.com", host1);
+			Connector::ref testling(createConnector());
+			resolver->addXMPPClientService("foo.com", host1);
 
-				testling->start();
-				testling->stop();
+			testling->start();
+			testling->stop();
 
-				eventLoop->processEvents();
+			eventLoop->processEvents();
 
-				CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
-				CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(connections.size()));
+			CPPUNIT_ASSERT(!connections[0]);
+			CPPUNIT_ASSERT(boost::dynamic_pointer_cast<DomainNameResolveError>(error));
 		}
 
 		void testStop_Timeout() {
@@ -242,16 +255,17 @@ class ConnectorTest : public CppUnit::TestFixture {
 	private:
 		Connector::ref createConnector() {
 			Connector::ref connector = Connector::create("foo.com", resolver, connectionFactory, timerFactory);
-			connector->onConnectFinished.connect(boost::bind(&ConnectorTest::handleConnectorFinished, this, _1));
+			connector->onConnectFinished.connect(boost::bind(&ConnectorTest::handleConnectorFinished, this, _1, _2));
 			return connector;
 		}
 
-		void handleConnectorFinished(boost::shared_ptr<Connection> connection) {
+		void handleConnectorFinished(boost::shared_ptr<Connection> connection, boost::shared_ptr<Error> resultError) {
 			boost::shared_ptr<MockConnection> c(boost::dynamic_pointer_cast<MockConnection>(connection));
 			if (connection) {
 				assert(c);
 			}
 			connections.push_back(c);
+			error = resultError;
 		}
 
 		struct MockConnection : public Connection {
@@ -299,6 +313,8 @@ class ConnectorTest : public CppUnit::TestFixture {
 		MockConnectionFactory* connectionFactory;
 		DummyTimerFactory* timerFactory;
 		std::vector< boost::shared_ptr<MockConnection> > connections;
+		boost::shared_ptr<Error> error;
+
 };
 
 CPPUNIT_TEST_SUITE_REGISTRATION(ConnectorTest);
author	Kevin Smith <git@kismith.co.uk>	2012-03-03 11:56:45 (GMT)
committer	Kevin Smith <git@kismith.co.uk>	2012-03-04 16:01:01 (GMT)
commit	4b6694377e3a0308009bdf90be0a4e0de463b215 (patch)
tree	86b860395d040c38774dfa4400979f9687dff8ae /Swiften/Network
parent	fde71bd59b1412ae475c06f2d4100ce088e86af6 (diff)
download	swift-4b6694377e3a0308009bdf90be0a4e0de463b215.zip swift-4b6694377e3a0308009bdf90be0a4e0de463b215.tar.bz2