/* * Copyright 2004 The WebRTC Project Authors. All rights reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include "p2p/base/port.h" #include #include #include #include #include #include #include #include #include "absl/strings/string_view.h" #include "absl/types/optional.h" #include "api/candidate.h" #include "api/packet_socket_factory.h" #include "api/transport/stun.h" #include "api/units/time_delta.h" #include "p2p/base/basic_packet_socket_factory.h" #include "p2p/base/p2p_constants.h" #include "p2p/base/port_allocator.h" #include "p2p/base/port_interface.h" #include "p2p/base/stun_port.h" #include "p2p/base/stun_server.h" #include "p2p/base/tcp_port.h" #include "p2p/base/test_stun_server.h" #include "p2p/base/test_turn_server.h" #include "p2p/base/transport_description.h" #include "p2p/base/turn_port.h" #include "p2p/base/turn_server.h" #include "p2p/client/relay_port_factory_interface.h" #include "rtc_base/arraysize.h" #include "rtc_base/async_packet_socket.h" #include "rtc_base/buffer.h" #include "rtc_base/byte_buffer.h" #include "rtc_base/checks.h" #include "rtc_base/dscp.h" #include "rtc_base/fake_clock.h" #include "rtc_base/gunit.h" #include "rtc_base/helpers.h" #include "rtc_base/logging.h" #include "rtc_base/nat_server.h" #include "rtc_base/nat_socket_factory.h" #include "rtc_base/nat_types.h" #include "rtc_base/net_helper.h" #include "rtc_base/network.h" #include "rtc_base/network/sent_packet.h" #include "rtc_base/network_constants.h" #include "rtc_base/proxy_info.h" #include "rtc_base/socket.h" #include "rtc_base/socket_adapters.h" #include "rtc_base/socket_address.h" #include "rtc_base/third_party/sigslot/sigslot.h" #include "rtc_base/thread.h" #include "rtc_base/time_utils.h" #include "rtc_base/virtual_socket_server.h" #include "test/gtest.h" #include "test/scoped_key_value_config.h" using rtc::AsyncListenSocket; using rtc::AsyncPacketSocket; using rtc::ByteBufferReader; using rtc::ByteBufferWriter; using rtc::NAT_ADDR_RESTRICTED; using rtc::NAT_OPEN_CONE; using rtc::NAT_PORT_RESTRICTED; using rtc::NAT_SYMMETRIC; using rtc::NATType; using rtc::PacketSocketFactory; using rtc::Socket; using rtc::SocketAddress; namespace cricket { namespace { constexpr int kDefaultTimeout = 3000; constexpr int kShortTimeout = 1000; constexpr int kMaxExpectedSimulatedRtt = 200; const SocketAddress kLocalAddr1("192.168.1.2", 0); const SocketAddress kLocalAddr2("192.168.1.3", 0); const SocketAddress kLinkLocalIPv6Addr("fe80::aabb:ccff:fedd:eeff", 0); const SocketAddress kNatAddr1("77.77.77.77", rtc::NAT_SERVER_UDP_PORT); const SocketAddress kNatAddr2("88.88.88.88", rtc::NAT_SERVER_UDP_PORT); const SocketAddress kStunAddr("99.99.99.1", STUN_SERVER_PORT); const SocketAddress kTurnUdpIntAddr("99.99.99.4", STUN_SERVER_PORT); const SocketAddress kTurnTcpIntAddr("99.99.99.4", 5010); const SocketAddress kTurnUdpExtAddr("99.99.99.5", 0); const RelayCredentials kRelayCredentials("test", "test"); // TODO(?): Update these when RFC5245 is completely supported. // Magic value of 30 is from RFC3484, for IPv4 addresses. const uint32_t kDefaultPrflxPriority = ICE_TYPE_PREFERENCE_PRFLX << 24 | 30 << 8 | (256 - ICE_CANDIDATE_COMPONENT_DEFAULT); constexpr int kTiebreaker1 = 11111; constexpr int kTiebreaker2 = 22222; constexpr int kTiebreakerDefault = 44444; const char* data = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"; Candidate GetCandidate(Port* port) { RTC_DCHECK_GE(port->Candidates().size(), 1); return port->Candidates()[0]; } SocketAddress GetAddress(Port* port) { return GetCandidate(port).address(); } std::unique_ptr CopyStunMessage(const IceMessage& src) { auto dst = std::make_unique(); ByteBufferWriter buf; src.Write(&buf); ByteBufferReader read_buf(buf); dst->Read(&read_buf); return dst; } bool WriteStunMessage(const StunMessage& msg, ByteBufferWriter* buf) { buf->Resize(0); // clear out any existing buffer contents return msg.Write(buf); } } // namespace // Stub port class for testing STUN generation and processing. class TestPort : public Port { public: TestPort(rtc::Thread* thread, absl::string_view type, rtc::PacketSocketFactory* factory, const rtc::Network* network, uint16_t min_port, uint16_t max_port, absl::string_view username_fragment, absl::string_view password) : Port(thread, type, factory, network, min_port, max_port, username_fragment, password) {} ~TestPort() {} // Expose GetStunMessage so that we can test it. using cricket::Port::GetStunMessage; // The last StunMessage that was sent on this Port. // TODO(?): Make these const; requires changes to SendXXXXResponse. rtc::BufferT* last_stun_buf() { return last_stun_buf_.get(); } IceMessage* last_stun_msg() { return last_stun_msg_.get(); } int last_stun_error_code() { int code = 0; if (last_stun_msg_) { const StunErrorCodeAttribute* error_attr = last_stun_msg_->GetErrorCode(); if (error_attr) { code = error_attr->code(); } } return code; } virtual void PrepareAddress() { // Act as if the socket was bound to the best IP on the network, to the // first port in the allowed range. rtc::SocketAddress addr(Network()->GetBestIP(), min_port()); AddAddress(addr, addr, rtc::SocketAddress(), "udp", "", "", Type(), ICE_TYPE_PREFERENCE_HOST, 0, "", true); } virtual bool SupportsProtocol(absl::string_view protocol) const { return true; } virtual ProtocolType GetProtocol() const { return PROTO_UDP; } // Exposed for testing candidate building. void AddCandidateAddress(const rtc::SocketAddress& addr) { AddAddress(addr, addr, rtc::SocketAddress(), "udp", "", "", Type(), type_preference_, 0, "", false); } void AddCandidateAddress(const rtc::SocketAddress& addr, const rtc::SocketAddress& base_address, absl::string_view type, int type_preference, bool final) { AddAddress(addr, base_address, rtc::SocketAddress(), "udp", "", "", type, type_preference, 0, "", final); } virtual Connection* CreateConnection(const Candidate& remote_candidate, CandidateOrigin origin) { Connection* conn = new ProxyConnection(NewWeakPtr(), 0, remote_candidate); AddOrReplaceConnection(conn); // Set use-candidate attribute flag as this will add USE-CANDIDATE attribute // in STUN binding requests. conn->set_use_candidate_attr(true); return conn; } virtual int SendTo(const void* data, size_t size, const rtc::SocketAddress& addr, const rtc::PacketOptions& options, bool payload) { if (!payload) { auto msg = std::make_unique(); auto buf = std::make_unique>( static_cast(data), size); ByteBufferReader read_buf(*buf); if (!msg->Read(&read_buf)) { return -1; } last_stun_buf_ = std::move(buf); last_stun_msg_ = std::move(msg); } return static_cast(size); } virtual int SetOption(rtc::Socket::Option opt, int value) { return 0; } virtual int GetOption(rtc::Socket::Option opt, int* value) { return -1; } virtual int GetError() { return 0; } void Reset() { last_stun_buf_.reset(); last_stun_msg_.reset(); } void set_type_preference(int type_preference) { type_preference_ = type_preference; } private: void OnSentPacket(rtc::AsyncPacketSocket* socket, const rtc::SentPacket& sent_packet) { PortInterface::SignalSentPacket(sent_packet); } std::unique_ptr> last_stun_buf_; std::unique_ptr last_stun_msg_; int type_preference_ = 0; }; static void SendPingAndReceiveResponse(Connection* lconn, TestPort* lport, Connection* rconn, TestPort* rport, rtc::ScopedFakeClock* clock, int64_t ms) { lconn->Ping(rtc::TimeMillis()); ASSERT_TRUE_WAIT(lport->last_stun_msg(), kDefaultTimeout); ASSERT_TRUE(lport->last_stun_buf()); rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); clock->AdvanceTime(webrtc::TimeDelta::Millis(ms)); ASSERT_TRUE_WAIT(rport->last_stun_msg(), kDefaultTimeout); ASSERT_TRUE(rport->last_stun_buf()); lconn->OnReadPacket(rport->last_stun_buf()->data(), rport->last_stun_buf()->size(), /* packet_time_us */ -1); } class TestChannel : public sigslot::has_slots<> { public: // Takes ownership of `p1` (but not `p2`). explicit TestChannel(std::unique_ptr p1) : port_(std::move(p1)) { port_->SignalPortComplete.connect(this, &TestChannel::OnPortComplete); port_->SignalUnknownAddress.connect(this, &TestChannel::OnUnknownAddress); port_->SubscribePortDestroyed( [this](PortInterface* port) { OnSrcPortDestroyed(port); }); } ~TestChannel() { Stop(); } int complete_count() { return complete_count_; } Connection* conn() { return conn_; } const SocketAddress& remote_address() { return remote_address_; } const std::string remote_fragment() { return remote_frag_; } void Start() { port_->PrepareAddress(); } void CreateConnection(const Candidate& remote_candidate) { RTC_DCHECK(!conn_); conn_ = port_->CreateConnection(remote_candidate, Port::ORIGIN_MESSAGE); IceMode remote_ice_mode = (ice_mode_ == ICEMODE_FULL) ? ICEMODE_LITE : ICEMODE_FULL; conn_->set_use_candidate_attr(remote_ice_mode == ICEMODE_FULL); conn_->SignalStateChange.connect(this, &TestChannel::OnConnectionStateChange); conn_->SignalDestroyed.connect(this, &TestChannel::OnDestroyed); conn_->SignalReadyToSend.connect(this, &TestChannel::OnConnectionReadyToSend); connection_ready_to_send_ = false; } void OnConnectionStateChange(Connection* conn) { if (conn->write_state() == Connection::STATE_WRITABLE) { conn->set_use_candidate_attr(true); nominated_ = true; } } void AcceptConnection(const Candidate& remote_candidate) { if (conn_) { conn_->SignalDestroyed.disconnect(this); conn_ = nullptr; } ASSERT_TRUE(remote_request_.get() != NULL); Candidate c = remote_candidate; c.set_address(remote_address_); conn_ = port_->CreateConnection(c, Port::ORIGIN_MESSAGE); conn_->SignalDestroyed.connect(this, &TestChannel::OnDestroyed); conn_->SendStunBindingResponse(remote_request_.get()); remote_request_.reset(); } void Ping() { Ping(0); } void Ping(int64_t now) { conn_->Ping(now); } void Stop() { if (conn_) { port_->DestroyConnection(conn_); conn_ = nullptr; } } void OnPortComplete(Port* port) { complete_count_++; } void SetIceMode(IceMode ice_mode) { ice_mode_ = ice_mode; } int SendData(const char* data, size_t len) { rtc::PacketOptions options; return conn_->Send(data, len, options); } void OnUnknownAddress(PortInterface* port, const SocketAddress& addr, ProtocolType proto, IceMessage* msg, const std::string& rf, bool /*port_muxed*/) { ASSERT_EQ(port_.get(), port); if (!remote_address_.IsNil()) { ASSERT_EQ(remote_address_, addr); } const cricket::StunUInt32Attribute* priority_attr = msg->GetUInt32(STUN_ATTR_PRIORITY); const cricket::StunByteStringAttribute* mi_attr = msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY); const cricket::StunUInt32Attribute* fingerprint_attr = msg->GetUInt32(STUN_ATTR_FINGERPRINT); EXPECT_TRUE(priority_attr != NULL); EXPECT_TRUE(mi_attr != NULL); EXPECT_TRUE(fingerprint_attr != NULL); remote_address_ = addr; remote_request_ = CopyStunMessage(*msg); remote_frag_ = rf; } void OnDestroyed(Connection* conn) { ASSERT_EQ(conn_, conn); RTC_LOG(LS_INFO) << "OnDestroy connection " << conn << " deleted"; conn_ = nullptr; // When the connection is destroyed, also clear these fields so future // connections are possible. remote_request_.reset(); remote_address_.Clear(); } void OnSrcPortDestroyed(PortInterface* port) { Port* destroyed_src = port_.release(); ASSERT_EQ(destroyed_src, port); } Port* port() { return port_.get(); } bool nominated() const { return nominated_; } void set_connection_ready_to_send(bool ready) { connection_ready_to_send_ = ready; } bool connection_ready_to_send() const { return connection_ready_to_send_; } private: // ReadyToSend will only issue after a Connection recovers from ENOTCONN void OnConnectionReadyToSend(Connection* conn) { ASSERT_EQ(conn, conn_); connection_ready_to_send_ = true; } IceMode ice_mode_ = ICEMODE_FULL; std::unique_ptr port_; int complete_count_ = 0; Connection* conn_ = nullptr; SocketAddress remote_address_; std::unique_ptr remote_request_; std::string remote_frag_; bool nominated_ = false; bool connection_ready_to_send_ = false; }; class PortTest : public ::testing::Test, public sigslot::has_slots<> { public: PortTest() : ss_(new rtc::VirtualSocketServer()), main_(ss_.get()), socket_factory_(ss_.get()), nat_factory1_(ss_.get(), kNatAddr1, SocketAddress()), nat_factory2_(ss_.get(), kNatAddr2, SocketAddress()), nat_socket_factory1_(&nat_factory1_), nat_socket_factory2_(&nat_factory2_), stun_server_(TestStunServer::Create(ss_.get(), kStunAddr)), turn_server_(&main_, ss_.get(), kTurnUdpIntAddr, kTurnUdpExtAddr), username_(rtc::CreateRandomString(ICE_UFRAG_LENGTH)), password_(rtc::CreateRandomString(ICE_PWD_LENGTH)), role_conflict_(false), ports_destroyed_(0) {} ~PortTest() { // Workaround for tests that trigger async destruction of objects that we // need to give an opportunity here to run, before proceeding with other // teardown. rtc::Thread::Current()->ProcessMessages(0); } protected: std::string password() { return password_; } void TestLocalToLocal() { auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity("udp", std::move(port1), "udp", std::move(port2), true, true, true, true); } void TestLocalToStun(NATType ntype) { auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); nat_server2_ = CreateNatServer(kNatAddr2, ntype); auto port2 = CreateStunPort(kLocalAddr2, &nat_socket_factory2_); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity("udp", std::move(port1), StunName(ntype), std::move(port2), ntype == NAT_OPEN_CONE, true, ntype != NAT_SYMMETRIC, true); } void TestLocalToRelay(ProtocolType proto) { auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_UDP); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity("udp", std::move(port1), RelayName(proto), std::move(port2), false, true, true, true); } void TestStunToLocal(NATType ntype) { nat_server1_ = CreateNatServer(kNatAddr1, ntype); auto port1 = CreateStunPort(kLocalAddr1, &nat_socket_factory1_); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity(StunName(ntype), std::move(port1), "udp", std::move(port2), true, ntype != NAT_SYMMETRIC, true, true); } void TestStunToStun(NATType ntype1, NATType ntype2) { nat_server1_ = CreateNatServer(kNatAddr1, ntype1); auto port1 = CreateStunPort(kLocalAddr1, &nat_socket_factory1_); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); nat_server2_ = CreateNatServer(kNatAddr2, ntype2); auto port2 = CreateStunPort(kLocalAddr2, &nat_socket_factory2_); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity(StunName(ntype1), std::move(port1), StunName(ntype2), std::move(port2), ntype2 == NAT_OPEN_CONE, ntype1 != NAT_SYMMETRIC, ntype2 != NAT_SYMMETRIC, ntype1 + ntype2 < (NAT_PORT_RESTRICTED + NAT_SYMMETRIC)); } void TestStunToRelay(NATType ntype, ProtocolType proto) { nat_server1_ = CreateNatServer(kNatAddr1, ntype); auto port1 = CreateStunPort(kLocalAddr1, &nat_socket_factory1_); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_UDP); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity(StunName(ntype), std::move(port1), RelayName(proto), std::move(port2), false, ntype != NAT_SYMMETRIC, true, true); } void TestTcpToTcp() { auto port1 = CreateTcpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateTcpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity("tcp", std::move(port1), "tcp", std::move(port2), true, false, true, true); } void TestTcpToRelay(ProtocolType proto) { auto port1 = CreateTcpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_TCP); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity("tcp", std::move(port1), RelayName(proto), std::move(port2), false, false, true, true); } void TestSslTcpToRelay(ProtocolType proto) { auto port1 = CreateTcpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_SSLTCP); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); TestConnectivity("ssltcp", std::move(port1), RelayName(proto), std::move(port2), false, false, true, true); } rtc::Network* MakeNetwork(const SocketAddress& addr) { networks_.emplace_back("unittest", "unittest", addr.ipaddr(), 32); networks_.back().AddIP(addr.ipaddr()); return &networks_.back(); } rtc::Network* MakeNetworkMultipleAddrs( const SocketAddress& global_addr, const SocketAddress& link_local_addr, const webrtc::FieldTrialsView* field_trials) { networks_.emplace_back("unittest", "unittest", global_addr.ipaddr(), 32, rtc::ADAPTER_TYPE_UNKNOWN, field_trials); networks_.back().AddIP(link_local_addr.ipaddr()); networks_.back().AddIP(global_addr.ipaddr()); networks_.back().AddIP(link_local_addr.ipaddr()); return &networks_.back(); } // helpers for above functions std::unique_ptr CreateUdpPort(const SocketAddress& addr) { return CreateUdpPort(addr, &socket_factory_); } std::unique_ptr CreateUdpPort(const SocketAddress& addr, PacketSocketFactory* socket_factory) { auto port = UDPPort::Create(&main_, socket_factory, MakeNetwork(addr), 0, 0, username_, password_, true, absl::nullopt, &field_trials_); port->SetIceTiebreaker(kTiebreakerDefault); return port; } std::unique_ptr CreateUdpPortMultipleAddrs( const SocketAddress& global_addr, const SocketAddress& link_local_addr, PacketSocketFactory* socket_factory, const webrtc::test::ScopedKeyValueConfig& field_trials) { auto port = UDPPort::Create( &main_, socket_factory, MakeNetworkMultipleAddrs(global_addr, link_local_addr, &field_trials), 0, 0, username_, password_, true, absl::nullopt, &field_trials); port->SetIceTiebreaker(kTiebreakerDefault); return port; } std::unique_ptr CreateTcpPort(const SocketAddress& addr) { return CreateTcpPort(addr, &socket_factory_); } std::unique_ptr CreateTcpPort(const SocketAddress& addr, PacketSocketFactory* socket_factory) { auto port = TCPPort::Create(&main_, socket_factory, MakeNetwork(addr), 0, 0, username_, password_, true, &field_trials_); port->SetIceTiebreaker(kTiebreakerDefault); return port; } std::unique_ptr CreateStunPort(const SocketAddress& addr, rtc::PacketSocketFactory* factory) { ServerAddresses stun_servers; stun_servers.insert(kStunAddr); auto port = StunPort::Create(&main_, factory, MakeNetwork(addr), 0, 0, username_, password_, stun_servers, absl::nullopt, &field_trials_); port->SetIceTiebreaker(kTiebreakerDefault); return port; } std::unique_ptr CreateRelayPort(const SocketAddress& addr, ProtocolType int_proto, ProtocolType ext_proto) { return CreateTurnPort(addr, &socket_factory_, int_proto, ext_proto); } std::unique_ptr CreateTurnPort(const SocketAddress& addr, PacketSocketFactory* socket_factory, ProtocolType int_proto, ProtocolType ext_proto) { SocketAddress server_addr = int_proto == PROTO_TCP ? kTurnTcpIntAddr : kTurnUdpIntAddr; return CreateTurnPort(addr, socket_factory, int_proto, ext_proto, server_addr); } std::unique_ptr CreateTurnPort( const SocketAddress& addr, PacketSocketFactory* socket_factory, ProtocolType int_proto, ProtocolType ext_proto, const rtc::SocketAddress& server_addr) { RelayServerConfig config; config.credentials = kRelayCredentials; ProtocolAddress server_address(server_addr, int_proto); CreateRelayPortArgs args; args.network_thread = &main_; args.socket_factory = socket_factory; args.network = MakeNetwork(addr); args.username = username_; args.password = password_; args.server_address = &server_address; args.config = &config; args.field_trials = &field_trials_; auto port = TurnPort::Create(args, 0, 0); port->SetIceTiebreaker(kTiebreakerDefault); return port; } std::unique_ptr CreateNatServer(const SocketAddress& addr, rtc::NATType type) { return std::make_unique(type, ss_.get(), addr, addr, ss_.get(), addr); } static const char* StunName(NATType type) { switch (type) { case NAT_OPEN_CONE: return "stun(open cone)"; case NAT_ADDR_RESTRICTED: return "stun(addr restricted)"; case NAT_PORT_RESTRICTED: return "stun(port restricted)"; case NAT_SYMMETRIC: return "stun(symmetric)"; default: return "stun(?)"; } } static const char* RelayName(ProtocolType proto) { switch (proto) { case PROTO_UDP: return "turn(udp)"; case PROTO_TCP: return "turn(tcp)"; case PROTO_SSLTCP: return "turn(ssltcp)"; case PROTO_TLS: return "turn(tls)"; default: return "turn(?)"; } } void TestCrossFamilyPorts(int type); void ExpectPortsCanConnect(bool can_connect, Port* p1, Port* p2); // This does all the work and then deletes `port1` and `port2`. void TestConnectivity(absl::string_view name1, std::unique_ptr port1, absl::string_view name2, std::unique_ptr port2, bool accept, bool same_addr1, bool same_addr2, bool possible); // This connects the provided channels which have already started. `ch1` // should have its Connection created (either through CreateConnection() or // TCP reconnecting mechanism before entering this function. void ConnectStartedChannels(TestChannel* ch1, TestChannel* ch2) { ASSERT_TRUE(ch1->conn()); EXPECT_TRUE_WAIT(ch1->conn()->connected(), kDefaultTimeout); // for TCP connect ch1->Ping(); WAIT(!ch2->remote_address().IsNil(), kShortTimeout); // Send a ping from dst to src. ch2->AcceptConnection(GetCandidate(ch1->port())); ch2->Ping(); EXPECT_EQ_WAIT(Connection::STATE_WRITABLE, ch2->conn()->write_state(), kDefaultTimeout); } // This connects and disconnects the provided channels in the same sequence as // TestConnectivity with all options set to `true`. It does not delete either // channel. void StartConnectAndStopChannels(TestChannel* ch1, TestChannel* ch2) { // Acquire addresses. ch1->Start(); ch2->Start(); ch1->CreateConnection(GetCandidate(ch2->port())); ConnectStartedChannels(ch1, ch2); // Destroy the connections. ch1->Stop(); ch2->Stop(); } // This disconnects both end's Connection and make sure ch2 ready for new // connection. void DisconnectTcpTestChannels(TestChannel* ch1, TestChannel* ch2) { TCPConnection* tcp_conn1 = static_cast(ch1->conn()); TCPConnection* tcp_conn2 = static_cast(ch2->conn()); ASSERT_TRUE( ss_->CloseTcpConnections(tcp_conn1->socket()->GetLocalAddress(), tcp_conn2->socket()->GetLocalAddress())); // Wait for both OnClose are delivered. EXPECT_TRUE_WAIT(!ch1->conn()->connected(), kDefaultTimeout); EXPECT_TRUE_WAIT(!ch2->conn()->connected(), kDefaultTimeout); // Ensure redundant SignalClose events on TcpConnection won't break tcp // reconnection. Chromium will fire SignalClose for all outstanding IPC // packets during reconnection. tcp_conn1->socket()->NotifyClosedForTest(0); tcp_conn2->socket()->NotifyClosedForTest(0); // Speed up destroying ch2's connection such that the test is ready to // accept a new connection from ch1 before ch1's connection destroys itself. ch2->Stop(); EXPECT_TRUE_WAIT(ch2->conn() == NULL, kDefaultTimeout); } void TestTcpReconnect(bool ping_after_disconnected, bool send_after_disconnected) { auto port1 = CreateTcpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateTcpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); port2->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); // Set up channels and ensure both ports will be deleted. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); EXPECT_EQ(0, ch1.complete_count()); EXPECT_EQ(0, ch2.complete_count()); ch1.Start(); ch2.Start(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout); // Initial connecting the channel, create connection on channel1. ch1.CreateConnection(GetCandidate(ch2.port())); ConnectStartedChannels(&ch1, &ch2); // Shorten the timeout period. const int kTcpReconnectTimeout = kDefaultTimeout; static_cast(ch1.conn()) ->set_reconnection_timeout(kTcpReconnectTimeout); static_cast(ch2.conn()) ->set_reconnection_timeout(kTcpReconnectTimeout); EXPECT_FALSE(ch1.connection_ready_to_send()); EXPECT_FALSE(ch2.connection_ready_to_send()); // Once connected, disconnect them. DisconnectTcpTestChannels(&ch1, &ch2); if (send_after_disconnected || ping_after_disconnected) { if (send_after_disconnected) { // First SendData after disconnect should fail but will trigger // reconnect. EXPECT_EQ(-1, ch1.SendData(data, static_cast(strlen(data)))); } if (ping_after_disconnected) { // Ping should trigger reconnect. ch1.Ping(); } // Wait for channel's outgoing TCPConnection connected. EXPECT_TRUE_WAIT(ch1.conn()->connected(), kDefaultTimeout); // Verify that we could still connect channels. ConnectStartedChannels(&ch1, &ch2); EXPECT_TRUE_WAIT(ch1.connection_ready_to_send(), kTcpReconnectTimeout); // Channel2 is the passive one so a new connection is created during // reconnect. This new connection should never have issued ENOTCONN // hence the connection_ready_to_send() should be false. EXPECT_FALSE(ch2.connection_ready_to_send()); } else { EXPECT_EQ(ch1.conn()->write_state(), Connection::STATE_WRITABLE); // Since the reconnection never happens, the connections should have been // destroyed after the timeout. EXPECT_TRUE_WAIT(!ch1.conn(), kTcpReconnectTimeout + kDefaultTimeout); EXPECT_TRUE(!ch2.conn()); } // Tear down and ensure that goes smoothly. ch1.Stop(); ch2.Stop(); EXPECT_TRUE_WAIT(ch1.conn() == NULL, kDefaultTimeout); EXPECT_TRUE_WAIT(ch2.conn() == NULL, kDefaultTimeout); } std::unique_ptr CreateStunMessage(StunMessageType type) { auto msg = std::make_unique(type, "TESTTESTTEST"); return msg; } std::unique_ptr CreateStunMessageWithUsername( StunMessageType type, absl::string_view username) { std::unique_ptr msg = CreateStunMessage(type); msg->AddAttribute(std::make_unique( STUN_ATTR_USERNAME, std::string(username))); return msg; } std::unique_ptr CreateTestPort(const rtc::SocketAddress& addr, absl::string_view username, absl::string_view password) { auto port = std::make_unique(&main_, "test", &socket_factory_, MakeNetwork(addr), 0, 0, username, password); port->SignalRoleConflict.connect(this, &PortTest::OnRoleConflict); return port; } std::unique_ptr CreateTestPort(const rtc::SocketAddress& addr, absl::string_view username, absl::string_view password, cricket::IceRole role, int tiebreaker) { auto port = CreateTestPort(addr, username, password); port->SetIceRole(role); port->SetIceTiebreaker(tiebreaker); return port; } // Overload to create a test port given an rtc::Network directly. std::unique_ptr CreateTestPort(const rtc::Network* network, absl::string_view username, absl::string_view password) { auto port = std::make_unique(&main_, "test", &socket_factory_, network, 0, 0, username, password); port->SignalRoleConflict.connect(this, &PortTest::OnRoleConflict); return port; } void OnRoleConflict(PortInterface* port) { role_conflict_ = true; } bool role_conflict() const { return role_conflict_; } void ConnectToSignalDestroyed(PortInterface* port) { port->SubscribePortDestroyed( [this](PortInterface* port) { OnDestroyed(port); }); } void OnDestroyed(PortInterface* port) { ++ports_destroyed_; } int ports_destroyed() const { return ports_destroyed_; } rtc::BasicPacketSocketFactory* nat_socket_factory1() { return &nat_socket_factory1_; } rtc::VirtualSocketServer* vss() { return ss_.get(); } private: // When a "create port" helper method is called with an IP, we create a // Network with that IP and add it to this list. Using a list instead of a // vector so that when it grows, pointers aren't invalidated. std::list networks_; std::unique_ptr ss_; rtc::AutoSocketServerThread main_; rtc::BasicPacketSocketFactory socket_factory_; std::unique_ptr nat_server1_; std::unique_ptr nat_server2_; rtc::NATSocketFactory nat_factory1_; rtc::NATSocketFactory nat_factory2_; rtc::BasicPacketSocketFactory nat_socket_factory1_; rtc::BasicPacketSocketFactory nat_socket_factory2_; std::unique_ptr stun_server_; TestTurnServer turn_server_; std::string username_; std::string password_; bool role_conflict_; int ports_destroyed_; webrtc::test::ScopedKeyValueConfig field_trials_; }; void PortTest::TestConnectivity(absl::string_view name1, std::unique_ptr port1, absl::string_view name2, std::unique_ptr port2, bool accept, bool same_addr1, bool same_addr2, bool possible) { rtc::ScopedFakeClock clock; RTC_LOG(LS_INFO) << "Test: " << name1 << " to " << name2 << ": "; port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); port2->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); // Set up channels and ensure both ports will be deleted. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); EXPECT_EQ(0, ch1.complete_count()); EXPECT_EQ(0, ch2.complete_count()); // Acquire addresses. ch1.Start(); ch2.Start(); ASSERT_EQ_SIMULATED_WAIT(1, ch1.complete_count(), kDefaultTimeout, clock); ASSERT_EQ_SIMULATED_WAIT(1, ch2.complete_count(), kDefaultTimeout, clock); // Send a ping from src to dst. This may or may not make it. ch1.CreateConnection(GetCandidate(ch2.port())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_TRUE_SIMULATED_WAIT(ch1.conn()->connected(), kDefaultTimeout, clock); // for TCP connect ch1.Ping(); SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock); if (accept) { // We are able to send a ping from src to dst. This is the case when // sending to UDP ports and cone NATs. EXPECT_TRUE(ch1.remote_address().IsNil()); EXPECT_EQ(ch2.remote_fragment(), ch1.port()->username_fragment()); // Ensure the ping came from the same address used for src. // This is the case unless the source NAT was symmetric. if (same_addr1) EXPECT_EQ(ch2.remote_address(), GetAddress(ch1.port())); EXPECT_TRUE(same_addr2); // Send a ping from dst to src. ch2.AcceptConnection(GetCandidate(ch1.port())); ASSERT_TRUE(ch2.conn() != NULL); ch2.Ping(); EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch2.conn()->write_state(), kDefaultTimeout, clock); } else { // We can't send a ping from src to dst, so flip it around. This will happen // when the destination NAT is addr/port restricted or symmetric. EXPECT_TRUE(ch1.remote_address().IsNil()); EXPECT_TRUE(ch2.remote_address().IsNil()); // Send a ping from dst to src. Again, this may or may not make it. ch2.CreateConnection(GetCandidate(ch1.port())); ASSERT_TRUE(ch2.conn() != NULL); ch2.Ping(); SIMULATED_WAIT(ch2.conn()->write_state() == Connection::STATE_WRITABLE, kShortTimeout, clock); if (same_addr1 && same_addr2) { // The new ping got back to the source. EXPECT_TRUE(ch1.conn()->receiving()); EXPECT_EQ(Connection::STATE_WRITABLE, ch2.conn()->write_state()); // First connection may not be writable if the first ping did not get // through. So we will have to do another. if (ch1.conn()->write_state() == Connection::STATE_WRITE_INIT) { ch1.Ping(); EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch1.conn()->write_state(), kDefaultTimeout, clock); } } else if (!same_addr1 && possible) { // The new ping went to the candidate address, but that address was bad. // This will happen when the source NAT is symmetric. EXPECT_TRUE(ch1.remote_address().IsNil()); EXPECT_TRUE(ch2.remote_address().IsNil()); // However, since we have now sent a ping to the source IP, we should be // able to get a ping from it. This gives us the real source address. ch1.Ping(); EXPECT_TRUE_SIMULATED_WAIT(!ch2.remote_address().IsNil(), kDefaultTimeout, clock); EXPECT_FALSE(ch2.conn()->receiving()); EXPECT_TRUE(ch1.remote_address().IsNil()); // Pick up the actual address and establish the connection. ch2.AcceptConnection(GetCandidate(ch1.port())); ASSERT_TRUE(ch2.conn() != NULL); ch2.Ping(); EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch2.conn()->write_state(), kDefaultTimeout, clock); } else if (!same_addr2 && possible) { // The new ping came in, but from an unexpected address. This will happen // when the destination NAT is symmetric. EXPECT_FALSE(ch1.remote_address().IsNil()); EXPECT_FALSE(ch1.conn()->receiving()); // Update our address and complete the connection. ch1.AcceptConnection(GetCandidate(ch2.port())); ch1.Ping(); EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch1.conn()->write_state(), kDefaultTimeout, clock); } else { // (!possible) // There should be s no way for the pings to reach each other. Check it. EXPECT_TRUE(ch1.remote_address().IsNil()); EXPECT_TRUE(ch2.remote_address().IsNil()); ch1.Ping(); SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock); EXPECT_TRUE(ch1.remote_address().IsNil()); EXPECT_TRUE(ch2.remote_address().IsNil()); } } // Everything should be good, unless we know the situation is impossible. ASSERT_TRUE(ch1.conn() != NULL); ASSERT_TRUE(ch2.conn() != NULL); if (possible) { EXPECT_TRUE(ch1.conn()->receiving()); EXPECT_EQ(Connection::STATE_WRITABLE, ch1.conn()->write_state()); EXPECT_TRUE(ch2.conn()->receiving()); EXPECT_EQ(Connection::STATE_WRITABLE, ch2.conn()->write_state()); } else { EXPECT_FALSE(ch1.conn()->receiving()); EXPECT_NE(Connection::STATE_WRITABLE, ch1.conn()->write_state()); EXPECT_FALSE(ch2.conn()->receiving()); EXPECT_NE(Connection::STATE_WRITABLE, ch2.conn()->write_state()); } // Tear down and ensure that goes smoothly. ch1.Stop(); ch2.Stop(); EXPECT_TRUE_SIMULATED_WAIT(ch1.conn() == NULL, kDefaultTimeout, clock); EXPECT_TRUE_SIMULATED_WAIT(ch2.conn() == NULL, kDefaultTimeout, clock); } class FakePacketSocketFactory : public rtc::PacketSocketFactory { public: FakePacketSocketFactory() : next_udp_socket_(NULL), next_server_tcp_socket_(NULL) {} ~FakePacketSocketFactory() override {} AsyncPacketSocket* CreateUdpSocket(const SocketAddress& address, uint16_t min_port, uint16_t max_port) override { EXPECT_TRUE(next_udp_socket_ != NULL); AsyncPacketSocket* result = next_udp_socket_; next_udp_socket_ = NULL; return result; } AsyncListenSocket* CreateServerTcpSocket(const SocketAddress& local_address, uint16_t min_port, uint16_t max_port, int opts) override { EXPECT_TRUE(next_server_tcp_socket_ != NULL); AsyncListenSocket* result = next_server_tcp_socket_; next_server_tcp_socket_ = NULL; return result; } AsyncPacketSocket* CreateClientTcpSocket( const SocketAddress& local_address, const SocketAddress& remote_address, const rtc::ProxyInfo& proxy_info, const std::string& user_agent, const rtc::PacketSocketTcpOptions& opts) override { EXPECT_TRUE(next_client_tcp_socket_.has_value()); AsyncPacketSocket* result = *next_client_tcp_socket_; next_client_tcp_socket_ = nullptr; return result; } void set_next_udp_socket(AsyncPacketSocket* next_udp_socket) { next_udp_socket_ = next_udp_socket; } void set_next_server_tcp_socket(AsyncListenSocket* next_server_tcp_socket) { next_server_tcp_socket_ = next_server_tcp_socket; } void set_next_client_tcp_socket(AsyncPacketSocket* next_client_tcp_socket) { next_client_tcp_socket_ = next_client_tcp_socket; } std::unique_ptr CreateAsyncDnsResolver() override { return nullptr; } private: AsyncPacketSocket* next_udp_socket_; AsyncListenSocket* next_server_tcp_socket_; absl::optional next_client_tcp_socket_; }; class FakeAsyncPacketSocket : public AsyncPacketSocket { public: // Returns current local address. Address may be set to NULL if the // socket is not bound yet (GetState() returns STATE_BINDING). virtual SocketAddress GetLocalAddress() const { return local_address_; } // Returns remote address. Returns zeroes if this is not a client TCP socket. virtual SocketAddress GetRemoteAddress() const { return remote_address_; } // Send a packet. virtual int Send(const void* pv, size_t cb, const rtc::PacketOptions& options) { if (error_ == 0) { return static_cast(cb); } else { return -1; } } virtual int SendTo(const void* pv, size_t cb, const SocketAddress& addr, const rtc::PacketOptions& options) { if (error_ == 0) { return static_cast(cb); } else { return -1; } } virtual int Close() { return 0; } virtual State GetState() const { return state_; } virtual int GetOption(Socket::Option opt, int* value) { return 0; } virtual int SetOption(Socket::Option opt, int value) { return 0; } virtual int GetError() const { return 0; } virtual void SetError(int error) { error_ = error; } void set_state(State state) { state_ = state; } SocketAddress local_address_; SocketAddress remote_address_; private: int error_ = 0; State state_; }; class FakeAsyncListenSocket : public AsyncListenSocket { public: // Returns current local address. Address may be set to NULL if the // socket is not bound yet (GetState() returns STATE_BINDING). virtual SocketAddress GetLocalAddress() const { return local_address_; } void Bind(const SocketAddress& address) { local_address_ = address; state_ = State::kBound; } virtual int GetOption(Socket::Option opt, int* value) { return 0; } virtual int SetOption(Socket::Option opt, int value) { return 0; } virtual State GetState() const { return state_; } private: SocketAddress local_address_; State state_ = State::kClosed; }; // Local -> XXXX TEST_F(PortTest, TestLocalToLocal) { TestLocalToLocal(); } TEST_F(PortTest, TestLocalToConeNat) { TestLocalToStun(NAT_OPEN_CONE); } TEST_F(PortTest, TestLocalToARNat) { TestLocalToStun(NAT_ADDR_RESTRICTED); } TEST_F(PortTest, TestLocalToPRNat) { TestLocalToStun(NAT_PORT_RESTRICTED); } TEST_F(PortTest, TestLocalToSymNat) { TestLocalToStun(NAT_SYMMETRIC); } // Flaky: https://code.google.com/p/webrtc/issues/detail?id=3316. TEST_F(PortTest, DISABLED_TestLocalToTurn) { TestLocalToRelay(PROTO_UDP); } // Cone NAT -> XXXX TEST_F(PortTest, TestConeNatToLocal) { TestStunToLocal(NAT_OPEN_CONE); } TEST_F(PortTest, TestConeNatToConeNat) { TestStunToStun(NAT_OPEN_CONE, NAT_OPEN_CONE); } TEST_F(PortTest, TestConeNatToARNat) { TestStunToStun(NAT_OPEN_CONE, NAT_ADDR_RESTRICTED); } TEST_F(PortTest, TestConeNatToPRNat) { TestStunToStun(NAT_OPEN_CONE, NAT_PORT_RESTRICTED); } TEST_F(PortTest, TestConeNatToSymNat) { TestStunToStun(NAT_OPEN_CONE, NAT_SYMMETRIC); } TEST_F(PortTest, TestConeNatToTurn) { TestStunToRelay(NAT_OPEN_CONE, PROTO_UDP); } // Address-restricted NAT -> XXXX TEST_F(PortTest, TestARNatToLocal) { TestStunToLocal(NAT_ADDR_RESTRICTED); } TEST_F(PortTest, TestARNatToConeNat) { TestStunToStun(NAT_ADDR_RESTRICTED, NAT_OPEN_CONE); } TEST_F(PortTest, TestARNatToARNat) { TestStunToStun(NAT_ADDR_RESTRICTED, NAT_ADDR_RESTRICTED); } TEST_F(PortTest, TestARNatToPRNat) { TestStunToStun(NAT_ADDR_RESTRICTED, NAT_PORT_RESTRICTED); } TEST_F(PortTest, TestARNatToSymNat) { TestStunToStun(NAT_ADDR_RESTRICTED, NAT_SYMMETRIC); } TEST_F(PortTest, TestARNatToTurn) { TestStunToRelay(NAT_ADDR_RESTRICTED, PROTO_UDP); } // Port-restricted NAT -> XXXX TEST_F(PortTest, TestPRNatToLocal) { TestStunToLocal(NAT_PORT_RESTRICTED); } TEST_F(PortTest, TestPRNatToConeNat) { TestStunToStun(NAT_PORT_RESTRICTED, NAT_OPEN_CONE); } TEST_F(PortTest, TestPRNatToARNat) { TestStunToStun(NAT_PORT_RESTRICTED, NAT_ADDR_RESTRICTED); } TEST_F(PortTest, TestPRNatToPRNat) { TestStunToStun(NAT_PORT_RESTRICTED, NAT_PORT_RESTRICTED); } TEST_F(PortTest, TestPRNatToSymNat) { // Will "fail" TestStunToStun(NAT_PORT_RESTRICTED, NAT_SYMMETRIC); } TEST_F(PortTest, TestPRNatToTurn) { TestStunToRelay(NAT_PORT_RESTRICTED, PROTO_UDP); } // Symmetric NAT -> XXXX TEST_F(PortTest, TestSymNatToLocal) { TestStunToLocal(NAT_SYMMETRIC); } TEST_F(PortTest, TestSymNatToConeNat) { TestStunToStun(NAT_SYMMETRIC, NAT_OPEN_CONE); } TEST_F(PortTest, TestSymNatToARNat) { TestStunToStun(NAT_SYMMETRIC, NAT_ADDR_RESTRICTED); } TEST_F(PortTest, TestSymNatToPRNat) { // Will "fail" TestStunToStun(NAT_SYMMETRIC, NAT_PORT_RESTRICTED); } TEST_F(PortTest, TestSymNatToSymNat) { // Will "fail" TestStunToStun(NAT_SYMMETRIC, NAT_SYMMETRIC); } TEST_F(PortTest, TestSymNatToTurn) { TestStunToRelay(NAT_SYMMETRIC, PROTO_UDP); } // Outbound TCP -> XXXX TEST_F(PortTest, TestTcpToTcp) { TestTcpToTcp(); } TEST_F(PortTest, TestTcpReconnectOnSendPacket) { TestTcpReconnect(false /* ping */, true /* send */); } TEST_F(PortTest, TestTcpReconnectOnPing) { TestTcpReconnect(true /* ping */, false /* send */); } TEST_F(PortTest, TestTcpReconnectTimeout) { TestTcpReconnect(false /* ping */, false /* send */); } // Test when TcpConnection never connects, the OnClose() will be called to // destroy the connection. TEST_F(PortTest, TestTcpNeverConnect) { auto port1 = CreateTcpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); // Set up a channel and ensure the port will be deleted. TestChannel ch1(std::move(port1)); EXPECT_EQ(0, ch1.complete_count()); ch1.Start(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); std::unique_ptr server( vss()->CreateSocket(kLocalAddr2.family(), SOCK_STREAM)); // Bind but not listen. EXPECT_EQ(0, server->Bind(kLocalAddr2)); Candidate c = GetCandidate(ch1.port()); c.set_address(server->GetLocalAddress()); ch1.CreateConnection(c); EXPECT_TRUE(ch1.conn()); EXPECT_TRUE_WAIT(!ch1.conn(), kDefaultTimeout); // for TCP connect } /* TODO(?): Enable these once testrelayserver can accept external TCP. TEST_F(PortTest, TestTcpToTcpRelay) { TestTcpToRelay(PROTO_TCP); } TEST_F(PortTest, TestTcpToSslTcpRelay) { TestTcpToRelay(PROTO_SSLTCP); } */ // Outbound SSLTCP -> XXXX /* TODO(?): Enable these once testrelayserver can accept external SSL. TEST_F(PortTest, TestSslTcpToTcpRelay) { TestSslTcpToRelay(PROTO_TCP); } TEST_F(PortTest, TestSslTcpToSslTcpRelay) { TestSslTcpToRelay(PROTO_SSLTCP); } */ // Test that a connection will be dead and deleted if // i) it has never received anything for MIN_CONNECTION_LIFETIME milliseconds // since it was created, or // ii) it has not received anything for DEAD_CONNECTION_RECEIVE_TIMEOUT // milliseconds since last receiving. TEST_F(PortTest, TestConnectionDead) { TestChannel ch1(CreateUdpPort(kLocalAddr1)); TestChannel ch2(CreateUdpPort(kLocalAddr2)); // Acquire address. ch1.Start(); ch2.Start(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout); // Test case that the connection has never received anything. int64_t before_created = rtc::TimeMillis(); ch1.CreateConnection(GetCandidate(ch2.port())); int64_t after_created = rtc::TimeMillis(); Connection* conn = ch1.conn(); ASSERT_NE(conn, nullptr); // It is not dead if it is after MIN_CONNECTION_LIFETIME but not pruned. conn->UpdateState(after_created + MIN_CONNECTION_LIFETIME + 1); rtc::Thread::Current()->ProcessMessages(0); EXPECT_TRUE(ch1.conn() != nullptr); // It is not dead if it is before MIN_CONNECTION_LIFETIME and pruned. conn->UpdateState(before_created + MIN_CONNECTION_LIFETIME - 1); conn->Prune(); rtc::Thread::Current()->ProcessMessages(0); EXPECT_TRUE(ch1.conn() != nullptr); // It will be dead after MIN_CONNECTION_LIFETIME and pruned. conn->UpdateState(after_created + MIN_CONNECTION_LIFETIME + 1); EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout); // Test case that the connection has received something. // Create a connection again and receive a ping. ch1.CreateConnection(GetCandidate(ch2.port())); conn = ch1.conn(); ASSERT_NE(conn, nullptr); int64_t before_last_receiving = rtc::TimeMillis(); conn->ReceivedPing(); int64_t after_last_receiving = rtc::TimeMillis(); // The connection will be dead after DEAD_CONNECTION_RECEIVE_TIMEOUT conn->UpdateState(before_last_receiving + DEAD_CONNECTION_RECEIVE_TIMEOUT - 1); rtc::Thread::Current()->ProcessMessages(100); EXPECT_TRUE(ch1.conn() != nullptr); conn->UpdateState(after_last_receiving + DEAD_CONNECTION_RECEIVE_TIMEOUT + 1); EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout); } TEST_F(PortTest, TestConnectionDeadWithDeadConnectionTimeout) { TestChannel ch1(CreateUdpPort(kLocalAddr1)); TestChannel ch2(CreateUdpPort(kLocalAddr2)); // Acquire address. ch1.Start(); ch2.Start(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout); // Note: set field trials manually since they are parsed by // P2PTransportChannel but P2PTransportChannel is not used in this test. IceFieldTrials field_trials; field_trials.dead_connection_timeout_ms = 90000; // Create a connection again and receive a ping. ch1.CreateConnection(GetCandidate(ch2.port())); auto conn = ch1.conn(); conn->SetIceFieldTrials(&field_trials); ASSERT_NE(conn, nullptr); int64_t before_last_receiving = rtc::TimeMillis(); conn->ReceivedPing(); int64_t after_last_receiving = rtc::TimeMillis(); // The connection will be dead after 90s conn->UpdateState(before_last_receiving + 90000 - 1); rtc::Thread::Current()->ProcessMessages(100); EXPECT_TRUE(ch1.conn() != nullptr); conn->UpdateState(after_last_receiving + 90000 + 1); EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout); } TEST_F(PortTest, TestConnectionDeadOutstandingPing) { auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); port1->SetIceTiebreaker(kTiebreaker1); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); port2->SetIceTiebreaker(kTiebreaker2); TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Acquire address. ch1.Start(); ch2.Start(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout); // Note: set field trials manually since they are parsed by // P2PTransportChannel but P2PTransportChannel is not used in this test. IceFieldTrials field_trials; field_trials.dead_connection_timeout_ms = 360000; // Create a connection again and receive a ping and then send // a ping and keep it outstanding. ch1.CreateConnection(GetCandidate(ch2.port())); auto conn = ch1.conn(); conn->SetIceFieldTrials(&field_trials); ASSERT_NE(conn, nullptr); conn->ReceivedPing(); int64_t send_ping_timestamp = rtc::TimeMillis(); conn->Ping(send_ping_timestamp); // The connection will be dead 30s after the ping was sent. conn->UpdateState(send_ping_timestamp + DEAD_CONNECTION_RECEIVE_TIMEOUT - 1); rtc::Thread::Current()->ProcessMessages(100); EXPECT_TRUE(ch1.conn() != nullptr); conn->UpdateState(send_ping_timestamp + DEAD_CONNECTION_RECEIVE_TIMEOUT + 1); EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout); } // This test case verifies standard ICE features in STUN messages. Currently it // verifies Message Integrity attribute in STUN messages and username in STUN // binding request will have colon (":") between remote and local username. TEST_F(PortTest, TestLocalToLocalStandard) { auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); port1->SetIceTiebreaker(kTiebreaker1); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); port2->SetIceTiebreaker(kTiebreaker2); // Same parameters as TestLocalToLocal above. TestConnectivity("udp", std::move(port1), "udp", std::move(port2), true, true, true, true); } // This test is trying to validate a successful and failure scenario in a // loopback test when protocol is RFC5245. For success IceTiebreaker, username // should remain equal to the request generated by the port and role of port // must be in controlling. TEST_F(PortTest, TestLoopbackCall) { auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); lport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); Connection* conn = lport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); conn->Ping(0); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = lport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); conn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); msg = lport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type()); // If the tiebreaker value is different from port, we expect a error // response. lport->Reset(); lport->AddCandidateAddress(kLocalAddr2); // Creating a different connection as `conn` is receiving. Connection* conn1 = lport->CreateConnection(lport->Candidates()[1], Port::ORIGIN_MESSAGE); conn1->Ping(0); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); msg = lport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); std::unique_ptr modified_req( CreateStunMessage(STUN_BINDING_REQUEST)); const StunByteStringAttribute* username_attr = msg->GetByteString(STUN_ATTR_USERNAME); modified_req->AddAttribute(std::make_unique( STUN_ATTR_USERNAME, username_attr->string_view())); // To make sure we receive error response, adding tiebreaker less than // what's present in request. modified_req->AddAttribute(std::make_unique( STUN_ATTR_ICE_CONTROLLING, kTiebreaker1 - 1)); modified_req->AddMessageIntegrity("lpass"); modified_req->AddFingerprint(); lport->Reset(); auto buf = std::make_unique(); WriteStunMessage(*modified_req, buf.get()); conn1->OnReadPacket(buf->Data(), buf->Length(), /* packet_time_us */ -1); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); msg = lport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_ERROR_RESPONSE, msg->type()); } // This test verifies role conflict signal is received when there is // conflict in the role. In this case both ports are in controlling and // `rport` has higher tiebreaker value than `lport`. Since `lport` has lower // value of tiebreaker, when it receives ping request from `rport` it will // send role conflict signal. TEST_F(PortTest, TestIceRoleConflict) { auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); rport->SetIceRole(cricket::ICEROLE_CONTROLLING); rport->SetIceTiebreaker(kTiebreaker2); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); rconn->Ping(0); ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = rport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); // Send rport binding request to lport. lconn->OnReadPacket(rport->last_stun_buf()->data(), rport->last_stun_buf()->size(), /* packet_time_us */ -1); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); EXPECT_EQ(STUN_BINDING_RESPONSE, lport->last_stun_msg()->type()); EXPECT_TRUE(role_conflict()); } TEST_F(PortTest, TestTcpNoDelay) { rtc::ScopedFakeClock clock; auto port1 = CreateTcpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); int option_value = -1; int success = port1->GetOption(rtc::Socket::OPT_NODELAY, &option_value); ASSERT_EQ(0, success); // GetOption() should complete successfully w/ 0 EXPECT_EQ(1, option_value); auto port2 = CreateTcpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); // Set up a connection, and verify that option is set on connected sockets at // both ends. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Acquire addresses. ch1.Start(); ch2.Start(); ASSERT_EQ_SIMULATED_WAIT(1, ch1.complete_count(), kDefaultTimeout, clock); ASSERT_EQ_SIMULATED_WAIT(1, ch2.complete_count(), kDefaultTimeout, clock); // Connect and send a ping from src to dst. ch1.CreateConnection(GetCandidate(ch2.port())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_TRUE_SIMULATED_WAIT(ch1.conn()->connected(), kDefaultTimeout, clock); // for TCP connect ch1.Ping(); SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock); // Accept the connection. ch2.AcceptConnection(GetCandidate(ch1.port())); ASSERT_TRUE(ch2.conn() != NULL); option_value = -1; success = static_cast(ch1.conn()) ->socket() ->GetOption(rtc::Socket::OPT_NODELAY, &option_value); ASSERT_EQ(0, success); EXPECT_EQ(1, option_value); option_value = -1; success = static_cast(ch2.conn()) ->socket() ->GetOption(rtc::Socket::OPT_NODELAY, &option_value); ASSERT_EQ(0, success); EXPECT_EQ(1, option_value); } TEST_F(PortTest, TestDelayedBindingUdp) { FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket(); FakePacketSocketFactory socket_factory; socket_factory.set_next_udp_socket(socket); auto port = CreateUdpPort(kLocalAddr1, &socket_factory); socket->set_state(AsyncPacketSocket::STATE_BINDING); port->PrepareAddress(); EXPECT_EQ(0U, port->Candidates().size()); socket->SignalAddressReady(socket, kLocalAddr2); EXPECT_EQ(1U, port->Candidates().size()); } TEST_F(PortTest, TestDisableInterfaceOfTcpPort) { FakeAsyncListenSocket* lsocket = new FakeAsyncListenSocket(); FakeAsyncListenSocket* rsocket = new FakeAsyncListenSocket(); FakePacketSocketFactory socket_factory; socket_factory.set_next_server_tcp_socket(lsocket); auto lport = CreateTcpPort(kLocalAddr1, &socket_factory); socket_factory.set_next_server_tcp_socket(rsocket); auto rport = CreateTcpPort(kLocalAddr2, &socket_factory); lsocket->Bind(kLocalAddr1); rsocket->Bind(kLocalAddr2); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(rport->Candidates().empty()); // A client socket. FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket(); socket->local_address_ = kLocalAddr1; socket->remote_address_ = kLocalAddr2; socket_factory.set_next_client_tcp_socket(socket); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); ASSERT_NE(lconn, nullptr); socket->SignalConnect(socket); lconn->Ping(0); // Now disconnect the client socket... socket->NotifyClosedForTest(1); // And prevent new sockets from being created. socket_factory.set_next_client_tcp_socket(nullptr); // Test that Ping() does not cause SEGV. lconn->Ping(0); } void PortTest::TestCrossFamilyPorts(int type) { FakePacketSocketFactory factory; std::unique_ptr ports[4]; SocketAddress addresses[4] = { SocketAddress("192.168.1.3", 0), SocketAddress("192.168.1.4", 0), SocketAddress("2001:db8::1", 0), SocketAddress("2001:db8::2", 0)}; for (int i = 0; i < 4; i++) { if (type == SOCK_DGRAM) { FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket(); factory.set_next_udp_socket(socket); ports[i] = CreateUdpPort(addresses[i], &factory); socket->set_state(AsyncPacketSocket::STATE_BINDING); socket->SignalAddressReady(socket, addresses[i]); } else if (type == SOCK_STREAM) { FakeAsyncListenSocket* socket = new FakeAsyncListenSocket(); factory.set_next_server_tcp_socket(socket); ports[i] = CreateTcpPort(addresses[i], &factory); socket->Bind(addresses[i]); } ports[i]->PrepareAddress(); } // IPv4 Port, connects to IPv6 candidate and then to IPv4 candidate. if (type == SOCK_STREAM) { FakeAsyncPacketSocket* clientsocket = new FakeAsyncPacketSocket(); factory.set_next_client_tcp_socket(clientsocket); } Connection* c = ports[0]->CreateConnection(GetCandidate(ports[2].get()), Port::ORIGIN_MESSAGE); EXPECT_TRUE(NULL == c); EXPECT_EQ(0U, ports[0]->connections().size()); c = ports[0]->CreateConnection(GetCandidate(ports[1].get()), Port::ORIGIN_MESSAGE); EXPECT_FALSE(NULL == c); EXPECT_EQ(1U, ports[0]->connections().size()); // IPv6 Port, connects to IPv4 candidate and to IPv6 candidate. if (type == SOCK_STREAM) { FakeAsyncPacketSocket* clientsocket = new FakeAsyncPacketSocket(); factory.set_next_client_tcp_socket(clientsocket); } c = ports[2]->CreateConnection(GetCandidate(ports[0].get()), Port::ORIGIN_MESSAGE); EXPECT_TRUE(NULL == c); EXPECT_EQ(0U, ports[2]->connections().size()); c = ports[2]->CreateConnection(GetCandidate(ports[3].get()), Port::ORIGIN_MESSAGE); EXPECT_FALSE(NULL == c); EXPECT_EQ(1U, ports[2]->connections().size()); } TEST_F(PortTest, TestSkipCrossFamilyTcp) { TestCrossFamilyPorts(SOCK_STREAM); } TEST_F(PortTest, TestSkipCrossFamilyUdp) { TestCrossFamilyPorts(SOCK_DGRAM); } void PortTest::ExpectPortsCanConnect(bool can_connect, Port* p1, Port* p2) { Connection* c = p1->CreateConnection(GetCandidate(p2), Port::ORIGIN_MESSAGE); if (can_connect) { EXPECT_FALSE(NULL == c); EXPECT_EQ(1U, p1->connections().size()); } else { EXPECT_TRUE(NULL == c); EXPECT_EQ(0U, p1->connections().size()); } } TEST_F(PortTest, TestUdpSingleAddressV6CrossTypePorts) { FakePacketSocketFactory factory; std::unique_ptr ports[4]; SocketAddress addresses[4] = { SocketAddress("2001:db8::1", 0), SocketAddress("fe80::1", 0), SocketAddress("fe80::2", 0), SocketAddress("::1", 0)}; for (int i = 0; i < 4; i++) { FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket(); factory.set_next_udp_socket(socket); ports[i] = CreateUdpPort(addresses[i], &factory); socket->set_state(AsyncPacketSocket::STATE_BINDING); socket->SignalAddressReady(socket, addresses[i]); ports[i]->PrepareAddress(); } Port* standard = ports[0].get(); Port* link_local1 = ports[1].get(); Port* link_local2 = ports[2].get(); Port* localhost = ports[3].get(); ExpectPortsCanConnect(false, link_local1, standard); ExpectPortsCanConnect(false, standard, link_local1); ExpectPortsCanConnect(false, link_local1, localhost); ExpectPortsCanConnect(false, localhost, link_local1); ExpectPortsCanConnect(true, link_local1, link_local2); ExpectPortsCanConnect(true, localhost, standard); ExpectPortsCanConnect(true, standard, localhost); } TEST_F(PortTest, TestUdpMultipleAddressesV6CrossTypePorts) { webrtc::test::ScopedKeyValueConfig field_trials( "WebRTC-IPv6NetworkResolutionFixes/" "Enabled,PreferGlobalIPv6Address:true/"); FakePacketSocketFactory factory; std::unique_ptr ports[5]; SocketAddress addresses[5] = { SocketAddress("2001:db8::1", 0), SocketAddress("2001:db8::2", 0), SocketAddress("fe80::1", 0), SocketAddress("fe80::2", 0), SocketAddress("::1", 0)}; for (int i = 0; i < 5; i++) { FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket(); factory.set_next_udp_socket(socket); ports[i] = CreateUdpPortMultipleAddrs(addresses[i], kLinkLocalIPv6Addr, &factory, field_trials); ports[i]->SetIceTiebreaker(kTiebreakerDefault); socket->set_state(AsyncPacketSocket::STATE_BINDING); socket->SignalAddressReady(socket, addresses[i]); ports[i]->PrepareAddress(); } Port* standard1 = ports[0].get(); Port* standard2 = ports[1].get(); Port* link_local1 = ports[2].get(); Port* link_local2 = ports[3].get(); Port* localhost = ports[4].get(); ExpectPortsCanConnect(false, link_local1, standard1); ExpectPortsCanConnect(false, standard1, link_local1); ExpectPortsCanConnect(false, link_local1, localhost); ExpectPortsCanConnect(false, localhost, link_local1); ExpectPortsCanConnect(true, link_local1, link_local2); ExpectPortsCanConnect(true, localhost, standard1); ExpectPortsCanConnect(true, standard1, localhost); ExpectPortsCanConnect(true, standard2, standard1); } // This test verifies DSCP value set through SetOption interface can be // get through DefaultDscpValue. TEST_F(PortTest, TestDefaultDscpValue) { int dscp; auto udpport = CreateUdpPort(kLocalAddr1); EXPECT_EQ(0, udpport->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_CS6)); EXPECT_EQ(0, udpport->GetOption(rtc::Socket::OPT_DSCP, &dscp)); auto tcpport = CreateTcpPort(kLocalAddr1); EXPECT_EQ(0, tcpport->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_AF31)); EXPECT_EQ(0, tcpport->GetOption(rtc::Socket::OPT_DSCP, &dscp)); EXPECT_EQ(rtc::DSCP_AF31, dscp); auto stunport = CreateStunPort(kLocalAddr1, nat_socket_factory1()); EXPECT_EQ(0, stunport->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_AF41)); EXPECT_EQ(0, stunport->GetOption(rtc::Socket::OPT_DSCP, &dscp)); EXPECT_EQ(rtc::DSCP_AF41, dscp); auto turnport1 = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP); // Socket is created in PrepareAddress. turnport1->PrepareAddress(); EXPECT_EQ(0, turnport1->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_CS7)); EXPECT_EQ(0, turnport1->GetOption(rtc::Socket::OPT_DSCP, &dscp)); EXPECT_EQ(rtc::DSCP_CS7, dscp); // This will verify correct value returned without the socket. auto turnport2 = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP); EXPECT_EQ(0, turnport2->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_CS6)); EXPECT_EQ(0, turnport2->GetOption(rtc::Socket::OPT_DSCP, &dscp)); EXPECT_EQ(rtc::DSCP_CS6, dscp); } // Test sending STUN messages. TEST_F(PortTest, TestSendStunMessage) { auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); // Send a fake ping from lport to rport. lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); lconn->Ping(0); // Check that it's a proper BINDING-REQUEST. ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = lport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); EXPECT_FALSE(msg->IsLegacy()); const StunByteStringAttribute* username_attr = msg->GetByteString(STUN_ATTR_USERNAME); ASSERT_TRUE(username_attr != NULL); const StunUInt32Attribute* priority_attr = msg->GetUInt32(STUN_ATTR_PRIORITY); ASSERT_TRUE(priority_attr != NULL); EXPECT_EQ(kDefaultPrflxPriority, priority_attr->value()); EXPECT_EQ("rfrag:lfrag", username_attr->string_view()); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY) != NULL); EXPECT_EQ(StunMessage::IntegrityStatus::kIntegrityOk, msg->ValidateMessageIntegrity("rpass")); const StunUInt64Attribute* ice_controlling_attr = msg->GetUInt64(STUN_ATTR_ICE_CONTROLLING); ASSERT_TRUE(ice_controlling_attr != NULL); EXPECT_EQ(lport->IceTiebreaker(), ice_controlling_attr->value()); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_ICE_CONTROLLED) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) != NULL); EXPECT_TRUE(msg->GetUInt32(STUN_ATTR_FINGERPRINT) != NULL); EXPECT_TRUE(StunMessage::ValidateFingerprint( lport->last_stun_buf()->data(), lport->last_stun_buf()->size())); // Request should not include ping count. ASSERT_TRUE(msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT) == NULL); // Save a copy of the BINDING-REQUEST for use below. std::unique_ptr request = CopyStunMessage(*msg); // Receive the BINDING-REQUEST and respond with BINDING-RESPONSE. rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); msg = rport->last_stun_msg(); ASSERT_TRUE(msg != NULL); EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type()); // Received a BINDING-RESPONSE. lconn->OnReadPacket(rport->last_stun_buf()->data(), rport->last_stun_buf()->size(), /* packet_time_us */ -1); // Verify the STUN Stats. EXPECT_EQ(1U, lconn->stats().sent_ping_requests_total); EXPECT_EQ(1U, lconn->stats().sent_ping_requests_before_first_response); EXPECT_EQ(1U, lconn->stats().recv_ping_responses); EXPECT_EQ(1U, rconn->stats().recv_ping_requests); EXPECT_EQ(1U, rconn->stats().sent_ping_responses); EXPECT_FALSE(msg->IsLegacy()); const StunAddressAttribute* addr_attr = msg->GetAddress(STUN_ATTR_XOR_MAPPED_ADDRESS); ASSERT_TRUE(addr_attr != NULL); EXPECT_EQ(lport->Candidates()[0].address(), addr_attr->GetAddress()); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY) != NULL); EXPECT_EQ(StunMessage::IntegrityStatus::kIntegrityOk, msg->ValidateMessageIntegrity("rpass")); EXPECT_TRUE(msg->GetUInt32(STUN_ATTR_FINGERPRINT) != NULL); EXPECT_TRUE(StunMessage::ValidateFingerprint( lport->last_stun_buf()->data(), lport->last_stun_buf()->size())); // No USERNAME or PRIORITY in ICE responses. EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USERNAME) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_PRIORITY) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MAPPED_ADDRESS) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_ICE_CONTROLLING) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_ICE_CONTROLLED) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) == NULL); // Response should not include ping count. ASSERT_TRUE(msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT) == NULL); // Respond with a BINDING-ERROR-RESPONSE. This wouldn't happen in real life, // but we can do it here. rport->SendBindingErrorResponse( request.get(), lport->Candidates()[0].address(), STUN_ERROR_SERVER_ERROR, STUN_ERROR_REASON_SERVER_ERROR); msg = rport->last_stun_msg(); ASSERT_TRUE(msg != NULL); EXPECT_EQ(STUN_BINDING_ERROR_RESPONSE, msg->type()); EXPECT_FALSE(msg->IsLegacy()); const StunErrorCodeAttribute* error_attr = msg->GetErrorCode(); ASSERT_TRUE(error_attr != NULL); EXPECT_EQ(STUN_ERROR_SERVER_ERROR, error_attr->code()); EXPECT_EQ(std::string(STUN_ERROR_REASON_SERVER_ERROR), error_attr->reason()); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY) != NULL); EXPECT_EQ(StunMessage::IntegrityStatus::kIntegrityOk, msg->ValidateMessageIntegrity("rpass")); EXPECT_TRUE(msg->GetUInt32(STUN_ATTR_FINGERPRINT) != NULL); EXPECT_TRUE(StunMessage::ValidateFingerprint( lport->last_stun_buf()->data(), lport->last_stun_buf()->size())); // No USERNAME with ICE. EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USERNAME) == NULL); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_PRIORITY) == NULL); // Testing STUN binding requests from rport --> lport, having ICE_CONTROLLED // and (incremented) RETRANSMIT_COUNT attributes. rport->Reset(); rport->set_send_retransmit_count_attribute(true); rconn->Ping(0); rconn->Ping(0); rconn->Ping(0); ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout); msg = rport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); const StunUInt64Attribute* ice_controlled_attr = msg->GetUInt64(STUN_ATTR_ICE_CONTROLLED); ASSERT_TRUE(ice_controlled_attr != NULL); EXPECT_EQ(rport->IceTiebreaker(), ice_controlled_attr->value()); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) == NULL); // Request should include ping count. const StunUInt32Attribute* retransmit_attr = msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT); ASSERT_TRUE(retransmit_attr != NULL); EXPECT_EQ(2U, retransmit_attr->value()); // Respond with a BINDING-RESPONSE. request = CopyStunMessage(*msg); lconn->OnReadPacket(rport->last_stun_buf()->data(), rport->last_stun_buf()->size(), /* packet_time_us */ -1); msg = lport->last_stun_msg(); // Receive the BINDING-RESPONSE. rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); // Verify the Stun ping stats. EXPECT_EQ(3U, rconn->stats().sent_ping_requests_total); EXPECT_EQ(3U, rconn->stats().sent_ping_requests_before_first_response); EXPECT_EQ(1U, rconn->stats().recv_ping_responses); EXPECT_EQ(1U, lconn->stats().sent_ping_responses); EXPECT_EQ(1U, lconn->stats().recv_ping_requests); // Ping after receiver the first response rconn->Ping(0); rconn->Ping(0); EXPECT_EQ(5U, rconn->stats().sent_ping_requests_total); EXPECT_EQ(3U, rconn->stats().sent_ping_requests_before_first_response); // Response should include same ping count. retransmit_attr = msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT); ASSERT_TRUE(retransmit_attr != NULL); EXPECT_EQ(2U, retransmit_attr->value()); } TEST_F(PortTest, TestNomination) { auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); // `lconn` is controlling, `rconn` is controlled. uint32_t nomination = 1234; lconn->set_nomination(nomination); EXPECT_FALSE(lconn->nominated()); EXPECT_FALSE(rconn->nominated()); EXPECT_EQ(lconn->nominated(), lconn->stats().nominated); EXPECT_EQ(rconn->nominated(), rconn->stats().nominated); // Send ping (including the nomination value) from `lconn` to `rconn`. This // should set the remote nomination of `rconn`. lconn->Ping(0); ASSERT_TRUE_WAIT(lport->last_stun_msg(), kDefaultTimeout); ASSERT_TRUE(lport->last_stun_buf()); rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); EXPECT_EQ(nomination, rconn->remote_nomination()); EXPECT_FALSE(lconn->nominated()); EXPECT_TRUE(rconn->nominated()); EXPECT_EQ(lconn->nominated(), lconn->stats().nominated); EXPECT_EQ(rconn->nominated(), rconn->stats().nominated); // This should result in an acknowledgment sent back from `rconn` to `lconn`, // updating the acknowledged nomination of `lconn`. ASSERT_TRUE_WAIT(rport->last_stun_msg(), kDefaultTimeout); ASSERT_TRUE(rport->last_stun_buf()); lconn->OnReadPacket(rport->last_stun_buf()->data(), rport->last_stun_buf()->size(), /* packet_time_us */ -1); EXPECT_EQ(nomination, lconn->acked_nomination()); EXPECT_TRUE(lconn->nominated()); EXPECT_TRUE(rconn->nominated()); EXPECT_EQ(lconn->nominated(), lconn->stats().nominated); EXPECT_EQ(rconn->nominated(), rconn->stats().nominated); } TEST_F(PortTest, TestRoundTripTime) { rtc::ScopedFakeClock clock; auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); EXPECT_EQ(0u, lconn->stats().total_round_trip_time_ms); EXPECT_FALSE(lconn->stats().current_round_trip_time_ms); SendPingAndReceiveResponse(lconn, lport.get(), rconn, rport.get(), &clock, 10); EXPECT_EQ(10u, lconn->stats().total_round_trip_time_ms); ASSERT_TRUE(lconn->stats().current_round_trip_time_ms); EXPECT_EQ(10u, *lconn->stats().current_round_trip_time_ms); SendPingAndReceiveResponse(lconn, lport.get(), rconn, rport.get(), &clock, 20); EXPECT_EQ(30u, lconn->stats().total_round_trip_time_ms); ASSERT_TRUE(lconn->stats().current_round_trip_time_ms); EXPECT_EQ(20u, *lconn->stats().current_round_trip_time_ms); SendPingAndReceiveResponse(lconn, lport.get(), rconn, rport.get(), &clock, 30); EXPECT_EQ(60u, lconn->stats().total_round_trip_time_ms); ASSERT_TRUE(lconn->stats().current_round_trip_time_ms); EXPECT_EQ(30u, *lconn->stats().current_round_trip_time_ms); } TEST_F(PortTest, TestUseCandidateAttribute) { auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); // Send a fake ping from lport to rport. lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); lconn->Ping(0); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = lport->last_stun_msg(); const StunUInt64Attribute* ice_controlling_attr = msg->GetUInt64(STUN_ATTR_ICE_CONTROLLING); ASSERT_TRUE(ice_controlling_attr != NULL); const StunByteStringAttribute* use_candidate_attr = msg->GetByteString(STUN_ATTR_USE_CANDIDATE); ASSERT_TRUE(use_candidate_attr != NULL); } // Tests that when the network type changes, the network cost of the port will // change, the network cost of the local candidates will change. Also tests that // the remote network costs are updated with the stun binding requests. TEST_F(PortTest, TestNetworkCostChange) { rtc::Network* test_network = MakeNetwork(kLocalAddr1); auto lport = CreateTestPort(test_network, "lfrag", "lpass"); auto rport = CreateTestPort(test_network, "rfrag", "rpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); lport->PrepareAddress(); rport->PrepareAddress(); // Default local port cost is rtc::kNetworkCostUnknown. EXPECT_EQ(rtc::kNetworkCostUnknown, lport->network_cost()); ASSERT_TRUE(!lport->Candidates().empty()); for (const cricket::Candidate& candidate : lport->Candidates()) { EXPECT_EQ(rtc::kNetworkCostUnknown, candidate.network_cost()); } // Change the network type to wifi. test_network->set_type(rtc::ADAPTER_TYPE_WIFI); EXPECT_EQ(rtc::kNetworkCostLow, lport->network_cost()); for (const cricket::Candidate& candidate : lport->Candidates()) { EXPECT_EQ(rtc::kNetworkCostLow, candidate.network_cost()); } // Add a connection and then change the network type. Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); // Change the network type to cellular. test_network->set_type(rtc::ADAPTER_TYPE_CELLULAR); EXPECT_EQ(rtc::kNetworkCostHigh, lport->network_cost()); for (const cricket::Candidate& candidate : lport->Candidates()) { EXPECT_EQ(rtc::kNetworkCostHigh, candidate.network_cost()); } test_network->set_type(rtc::ADAPTER_TYPE_WIFI); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); test_network->set_type(rtc::ADAPTER_TYPE_CELLULAR); lconn->Ping(0); // The rconn's remote candidate cost is rtc::kNetworkCostLow, but the ping // contains an attribute of network cost of rtc::kNetworkCostHigh. Once the // message is handled in rconn, The rconn's remote candidate will have cost // rtc::kNetworkCostHigh; EXPECT_EQ(rtc::kNetworkCostLow, rconn->remote_candidate().network_cost()); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = lport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); // Pass the binding request to rport. rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); // Wait until rport sends the response and then check the remote network cost. ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout); EXPECT_EQ(rtc::kNetworkCostHigh, rconn->remote_candidate().network_cost()); } TEST_F(PortTest, TestNetworkInfoAttribute) { rtc::Network* test_network = MakeNetwork(kLocalAddr1); auto lport = CreateTestPort(test_network, "lfrag", "lpass"); auto rport = CreateTestPort(test_network, "rfrag", "rpass"); lport->SetIceRole(cricket::ICEROLE_CONTROLLING); lport->SetIceTiebreaker(kTiebreaker1); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); uint16_t lnetwork_id = 9; test_network->set_id(lnetwork_id); // Send a fake ping from lport to rport. lport->PrepareAddress(); rport->PrepareAddress(); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); lconn->Ping(0); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = lport->last_stun_msg(); const StunUInt32Attribute* network_info_attr = msg->GetUInt32(STUN_ATTR_GOOG_NETWORK_INFO); ASSERT_TRUE(network_info_attr != NULL); uint32_t network_info = network_info_attr->value(); EXPECT_EQ(lnetwork_id, network_info >> 16); // Default network has unknown type and cost kNetworkCostUnknown. EXPECT_EQ(rtc::kNetworkCostUnknown, network_info & 0xFFFF); // Set the network type to be cellular so its cost will be kNetworkCostHigh. // Send a fake ping from rport to lport. test_network->set_type(rtc::ADAPTER_TYPE_CELLULAR); uint16_t rnetwork_id = 8; test_network->set_id(rnetwork_id); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); rconn->Ping(0); ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout); msg = rport->last_stun_msg(); network_info_attr = msg->GetUInt32(STUN_ATTR_GOOG_NETWORK_INFO); ASSERT_TRUE(network_info_attr != NULL); network_info = network_info_attr->value(); EXPECT_EQ(rnetwork_id, network_info >> 16); EXPECT_EQ(rtc::kNetworkCostHigh, network_info & 0xFFFF); } // Test handling STUN messages. TEST_F(PortTest, TestHandleStunMessage) { // Our port will act as the "remote" port. auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); std::unique_ptr in_msg, out_msg; auto buf = std::make_unique(); rtc::SocketAddress addr(kLocalAddr1); std::string username; // BINDING-REQUEST from local to remote with valid ICE username, // MESSAGE-INTEGRITY, and FINGERPRINT. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag"); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() != NULL); EXPECT_EQ("lfrag", username); // BINDING-RESPONSE without username, with MESSAGE-INTEGRITY and FINGERPRINT. in_msg = CreateStunMessage(STUN_BINDING_RESPONSE); in_msg->AddAttribute(std::make_unique( STUN_ATTR_XOR_MAPPED_ADDRESS, kLocalAddr2)); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() != NULL); EXPECT_EQ("", username); // BINDING-ERROR-RESPONSE without username, with error, M-I, and FINGERPRINT. in_msg = CreateStunMessage(STUN_BINDING_ERROR_RESPONSE); in_msg->AddAttribute(std::make_unique( STUN_ATTR_ERROR_CODE, STUN_ERROR_SERVER_ERROR, STUN_ERROR_REASON_SERVER_ERROR)); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() != NULL); EXPECT_EQ("", username); ASSERT_TRUE(out_msg->GetErrorCode() != NULL); EXPECT_EQ(STUN_ERROR_SERVER_ERROR, out_msg->GetErrorCode()->code()); EXPECT_EQ(std::string(STUN_ERROR_REASON_SERVER_ERROR), out_msg->GetErrorCode()->reason()); } // Tests handling of ICE binding requests with missing or incorrect usernames. TEST_F(PortTest, TestHandleStunMessageBadUsername) { auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); std::unique_ptr in_msg, out_msg; auto buf = std::make_unique(); rtc::SocketAddress addr(kLocalAddr1); std::string username; // BINDING-REQUEST with no username. in_msg = CreateStunMessage(STUN_BINDING_REQUEST); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_BAD_REQUEST, port->last_stun_error_code()); // BINDING-REQUEST with empty username. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, ""); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code()); // BINDING-REQUEST with too-short username. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfra"); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code()); // BINDING-REQUEST with reversed username. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "lfrag:rfrag"); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code()); // BINDING-REQUEST with garbage username. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "abcd:efgh"); in_msg->AddMessageIntegrity("rpass"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code()); } // Test handling STUN messages with missing or malformed M-I. TEST_F(PortTest, TestHandleStunMessageBadMessageIntegrity) { // Our port will act as the "remote" port. auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); std::unique_ptr in_msg, out_msg; auto buf = std::make_unique(); rtc::SocketAddress addr(kLocalAddr1); std::string username; // BINDING-REQUEST from local to remote with valid ICE username and // FINGERPRINT, but no MESSAGE-INTEGRITY. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_BAD_REQUEST, port->last_stun_error_code()); // BINDING-REQUEST from local to remote with valid ICE username and // FINGERPRINT, but invalid MESSAGE-INTEGRITY. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag"); in_msg->AddMessageIntegrity("invalid"); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() == NULL); EXPECT_EQ("", username); EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code()); // TODO(?): BINDING-RESPONSES and BINDING-ERROR-RESPONSES are checked // by the Connection, not the Port, since they require the remote username. // Change this test to pass in data via Connection::OnReadPacket instead. } // Test handling STUN messages with missing or malformed FINGERPRINT. TEST_F(PortTest, TestHandleStunMessageBadFingerprint) { // Our port will act as the "remote" port. auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); std::unique_ptr in_msg, out_msg; auto buf = std::make_unique(); rtc::SocketAddress addr(kLocalAddr1); std::string username; // BINDING-REQUEST from local to remote with valid ICE username and // MESSAGE-INTEGRITY, but no FINGERPRINT; GetStunMessage should fail. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag"); in_msg->AddMessageIntegrity("rpass"); WriteStunMessage(*in_msg, buf.get()); EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_EQ(0, port->last_stun_error_code()); // Now, add a fingerprint, but munge the message so it's not valid. in_msg->AddFingerprint(); in_msg->SetTransactionIdForTesting("TESTTESTBADD"); WriteStunMessage(*in_msg, buf.get()); EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_EQ(0, port->last_stun_error_code()); // Valid BINDING-RESPONSE, except no FINGERPRINT. in_msg = CreateStunMessage(STUN_BINDING_RESPONSE); in_msg->AddAttribute(std::make_unique( STUN_ATTR_XOR_MAPPED_ADDRESS, kLocalAddr2)); in_msg->AddMessageIntegrity("rpass"); WriteStunMessage(*in_msg, buf.get()); EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_EQ(0, port->last_stun_error_code()); // Now, add a fingerprint, but munge the message so it's not valid. in_msg->AddFingerprint(); in_msg->SetTransactionIdForTesting("TESTTESTBADD"); WriteStunMessage(*in_msg, buf.get()); EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_EQ(0, port->last_stun_error_code()); // Valid BINDING-ERROR-RESPONSE, except no FINGERPRINT. in_msg = CreateStunMessage(STUN_BINDING_ERROR_RESPONSE); in_msg->AddAttribute(std::make_unique( STUN_ATTR_ERROR_CODE, STUN_ERROR_SERVER_ERROR, STUN_ERROR_REASON_SERVER_ERROR)); in_msg->AddMessageIntegrity("rpass"); WriteStunMessage(*in_msg, buf.get()); EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_EQ(0, port->last_stun_error_code()); // Now, add a fingerprint, but munge the message so it's not valid. in_msg->AddFingerprint(); in_msg->SetTransactionIdForTesting("TESTTESTBADD"); WriteStunMessage(*in_msg, buf.get()); EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_EQ(0, port->last_stun_error_code()); } // Test handling a STUN message with unknown attributes in the // "comprehension-required" range. Should respond with an error with the // unknown attributes' IDs. TEST_F(PortTest, TestHandleStunRequestWithUnknownComprehensionRequiredAttribute) { // Our port will act as the "remote" port. std::unique_ptr port(CreateTestPort(kLocalAddr2, "rfrag", "rpass")); std::unique_ptr in_msg, out_msg; auto buf = std::make_unique(); rtc::SocketAddress addr(kLocalAddr1); std::string username; // Build ordinary message with valid ufrag/pass. in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag"); in_msg->AddMessageIntegrity("rpass"); // Add a couple attributes with ID in comprehension-required range. in_msg->AddAttribute(StunAttribute::CreateUInt32(0x7777)); in_msg->AddAttribute(StunAttribute::CreateUInt32(0x4567)); // ... And one outside the range. in_msg->AddAttribute(StunAttribute::CreateUInt32(0xdead)); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); ASSERT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); IceMessage* error_response = port->last_stun_msg(); ASSERT_NE(nullptr, error_response); // Verify that the "unknown attribute" error response has the right error // code, and includes an attribute that lists out the unrecognized attribute // types. EXPECT_EQ(STUN_ERROR_UNKNOWN_ATTRIBUTE, error_response->GetErrorCodeValue()); const StunUInt16ListAttribute* unknown_attributes = error_response->GetUnknownAttributes(); ASSERT_NE(nullptr, unknown_attributes); ASSERT_EQ(2u, unknown_attributes->Size()); EXPECT_EQ(0x7777, unknown_attributes->GetType(0)); EXPECT_EQ(0x4567, unknown_attributes->GetType(1)); } // Similar to the above, but with a response instead of a request. In this // case the response should just be ignored and transaction treated is failed. TEST_F(PortTest, TestHandleStunResponseWithUnknownComprehensionRequiredAttribute) { // Generic setup. auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreakerDefault); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreakerDefault); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); // Send request. lconn->Ping(0); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); // Intercept request and add comprehension required attribute. ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout); auto modified_response = rport->last_stun_msg()->Clone(); modified_response->AddAttribute(StunAttribute::CreateUInt32(0x7777)); modified_response->RemoveAttribute(STUN_ATTR_FINGERPRINT); modified_response->AddFingerprint(); ByteBufferWriter buf; WriteStunMessage(*modified_response, &buf); lconn->OnReadPacket(buf.Data(), buf.Length(), /* packet_time_us */ -1); // Response should have been ignored, leaving us unwritable still. EXPECT_FALSE(lconn->writable()); } // Similar to the above, but with an indication. As with a response, it should // just be ignored. TEST_F(PortTest, TestHandleStunIndicationWithUnknownComprehensionRequiredAttribute) { // Generic set up. auto lport = CreateTestPort(kLocalAddr2, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreakerDefault); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreakerDefault); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); // Generate indication with comprehension required attribute and verify it // doesn't update last_ping_received. auto in_msg = CreateStunMessage(STUN_BINDING_INDICATION); in_msg->AddAttribute(StunAttribute::CreateUInt32(0x7777)); in_msg->AddFingerprint(); ByteBufferWriter buf; WriteStunMessage(*in_msg, &buf); lconn->OnReadPacket(buf.Data(), buf.Length(), /* packet_time_us */ -1); EXPECT_EQ(0u, lconn->last_ping_received()); } // Test handling of STUN binding indication messages . STUN binding // indications are allowed only to the connection which is in read mode. TEST_F(PortTest, TestHandleStunBindingIndication) { auto lport = CreateTestPort(kLocalAddr2, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); // Verifying encoding and decoding STUN indication message. std::unique_ptr in_msg, out_msg; std::unique_ptr buf(new ByteBufferWriter()); rtc::SocketAddress addr(kLocalAddr1); std::string username; in_msg = CreateStunMessage(STUN_BINDING_INDICATION); in_msg->AddFingerprint(); WriteStunMessage(*in_msg, buf.get()); EXPECT_TRUE(lport->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg, &username)); EXPECT_TRUE(out_msg.get() != NULL); EXPECT_EQ(out_msg->type(), STUN_BINDING_INDICATION); EXPECT_EQ("", username); // Verify connection can handle STUN indication and updates // last_ping_received. auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceTiebreaker(kTiebreaker2); lport->PrepareAddress(); rport->PrepareAddress(); ASSERT_FALSE(lport->Candidates().empty()); ASSERT_FALSE(rport->Candidates().empty()); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); rconn->Ping(0); ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = rport->last_stun_msg(); EXPECT_EQ(STUN_BINDING_REQUEST, msg->type()); // Send rport binding request to lport. lconn->OnReadPacket(rport->last_stun_buf()->data(), rport->last_stun_buf()->size(), /* packet_time_us */ -1); ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout); EXPECT_EQ(STUN_BINDING_RESPONSE, lport->last_stun_msg()->type()); int64_t last_ping_received1 = lconn->last_ping_received(); // Adding a delay of 100ms. rtc::Thread::Current()->ProcessMessages(100); // Pinging lconn using stun indication message. lconn->OnReadPacket(buf->Data(), buf->Length(), /* packet_time_us */ -1); int64_t last_ping_received2 = lconn->last_ping_received(); EXPECT_GT(last_ping_received2, last_ping_received1); } TEST_F(PortTest, TestComputeCandidatePriority) { auto port = CreateTestPort(kLocalAddr1, "name", "pass"); port->SetIceTiebreaker(kTiebreakerDefault); port->set_type_preference(90); port->set_component(177); port->AddCandidateAddress(SocketAddress("192.168.1.4", 1234)); port->AddCandidateAddress(SocketAddress("2001:db8::1234", 1234)); port->AddCandidateAddress(SocketAddress("fc12:3456::1234", 1234)); port->AddCandidateAddress(SocketAddress("::ffff:192.168.1.4", 1234)); port->AddCandidateAddress(SocketAddress("::192.168.1.4", 1234)); port->AddCandidateAddress(SocketAddress("2002::1234:5678", 1234)); port->AddCandidateAddress(SocketAddress("2001::1234:5678", 1234)); port->AddCandidateAddress(SocketAddress("fecf::1234:5678", 1234)); port->AddCandidateAddress(SocketAddress("3ffe::1234:5678", 1234)); // These should all be: // (90 << 24) | ([rfc3484 pref value] << 8) | (256 - 177) uint32_t expected_priority_v4 = 1509957199U; uint32_t expected_priority_v6 = 1509959759U; uint32_t expected_priority_ula = 1509962319U; uint32_t expected_priority_v4mapped = expected_priority_v4; uint32_t expected_priority_v4compat = 1509949775U; uint32_t expected_priority_6to4 = 1509954639U; uint32_t expected_priority_teredo = 1509952079U; uint32_t expected_priority_sitelocal = 1509949775U; uint32_t expected_priority_6bone = 1509949775U; ASSERT_EQ(expected_priority_v4, port->Candidates()[0].priority()); ASSERT_EQ(expected_priority_v6, port->Candidates()[1].priority()); ASSERT_EQ(expected_priority_ula, port->Candidates()[2].priority()); ASSERT_EQ(expected_priority_v4mapped, port->Candidates()[3].priority()); ASSERT_EQ(expected_priority_v4compat, port->Candidates()[4].priority()); ASSERT_EQ(expected_priority_6to4, port->Candidates()[5].priority()); ASSERT_EQ(expected_priority_teredo, port->Candidates()[6].priority()); ASSERT_EQ(expected_priority_sitelocal, port->Candidates()[7].priority()); ASSERT_EQ(expected_priority_6bone, port->Candidates()[8].priority()); } // In the case of shared socket, one port may be shared by local and stun. // Test that candidates with different types will have different foundation. TEST_F(PortTest, TestFoundation) { auto testport = CreateTestPort(kLocalAddr1, "name", "pass"); testport->SetIceTiebreaker(kTiebreakerDefault); testport->AddCandidateAddress(kLocalAddr1, kLocalAddr1, LOCAL_PORT_TYPE, cricket::ICE_TYPE_PREFERENCE_HOST, false); testport->AddCandidateAddress(kLocalAddr2, kLocalAddr1, STUN_PORT_TYPE, cricket::ICE_TYPE_PREFERENCE_SRFLX, true); EXPECT_NE(testport->Candidates()[0].foundation(), testport->Candidates()[1].foundation()); } // This test verifies the foundation of different types of ICE candidates. TEST_F(PortTest, TestCandidateFoundation) { std::unique_ptr nat_server( CreateNatServer(kNatAddr1, NAT_OPEN_CONE)); auto udpport1 = CreateUdpPort(kLocalAddr1); udpport1->PrepareAddress(); auto udpport2 = CreateUdpPort(kLocalAddr1); udpport2->PrepareAddress(); EXPECT_EQ(udpport1->Candidates()[0].foundation(), udpport2->Candidates()[0].foundation()); auto tcpport1 = CreateTcpPort(kLocalAddr1); tcpport1->PrepareAddress(); auto tcpport2 = CreateTcpPort(kLocalAddr1); tcpport2->PrepareAddress(); EXPECT_EQ(tcpport1->Candidates()[0].foundation(), tcpport2->Candidates()[0].foundation()); auto stunport = CreateStunPort(kLocalAddr1, nat_socket_factory1()); stunport->PrepareAddress(); ASSERT_EQ_WAIT(1U, stunport->Candidates().size(), kDefaultTimeout); EXPECT_NE(tcpport1->Candidates()[0].foundation(), stunport->Candidates()[0].foundation()); EXPECT_NE(tcpport2->Candidates()[0].foundation(), stunport->Candidates()[0].foundation()); EXPECT_NE(udpport1->Candidates()[0].foundation(), stunport->Candidates()[0].foundation()); EXPECT_NE(udpport2->Candidates()[0].foundation(), stunport->Candidates()[0].foundation()); // Verifying TURN candidate foundation. auto turnport1 = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP); turnport1->PrepareAddress(); ASSERT_EQ_WAIT(1U, turnport1->Candidates().size(), kDefaultTimeout); EXPECT_NE(udpport1->Candidates()[0].foundation(), turnport1->Candidates()[0].foundation()); EXPECT_NE(udpport2->Candidates()[0].foundation(), turnport1->Candidates()[0].foundation()); EXPECT_NE(stunport->Candidates()[0].foundation(), turnport1->Candidates()[0].foundation()); auto turnport2 = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP); turnport2->PrepareAddress(); ASSERT_EQ_WAIT(1U, turnport2->Candidates().size(), kDefaultTimeout); EXPECT_EQ(turnport1->Candidates()[0].foundation(), turnport2->Candidates()[0].foundation()); // Running a second turn server, to get different base IP address. SocketAddress kTurnUdpIntAddr2("99.99.98.4", STUN_SERVER_PORT); SocketAddress kTurnUdpExtAddr2("99.99.98.5", 0); TestTurnServer turn_server2(rtc::Thread::Current(), vss(), kTurnUdpIntAddr2, kTurnUdpExtAddr2); auto turnport3 = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP, kTurnUdpIntAddr2); turnport3->PrepareAddress(); ASSERT_EQ_WAIT(1U, turnport3->Candidates().size(), kDefaultTimeout); EXPECT_NE(turnport3->Candidates()[0].foundation(), turnport2->Candidates()[0].foundation()); // Start a TCP turn server, and check that two turn candidates have // different foundations if their relay protocols are different. TestTurnServer turn_server3(rtc::Thread::Current(), vss(), kTurnTcpIntAddr, kTurnUdpExtAddr, PROTO_TCP); auto turnport4 = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_TCP, PROTO_UDP); turnport4->PrepareAddress(); ASSERT_EQ_WAIT(1U, turnport4->Candidates().size(), kDefaultTimeout); EXPECT_NE(turnport2->Candidates()[0].foundation(), turnport4->Candidates()[0].foundation()); } // This test verifies the related addresses of different types of // ICE candidates. TEST_F(PortTest, TestCandidateRelatedAddress) { auto nat_server = CreateNatServer(kNatAddr1, NAT_OPEN_CONE); auto udpport = CreateUdpPort(kLocalAddr1); udpport->PrepareAddress(); // For UDPPort, related address will be empty. EXPECT_TRUE(udpport->Candidates()[0].related_address().IsNil()); // Testing related address for stun candidates. // For stun candidate related address must be equal to the base // socket address. auto stunport = CreateStunPort(kLocalAddr1, nat_socket_factory1()); stunport->PrepareAddress(); ASSERT_EQ_WAIT(1U, stunport->Candidates().size(), kDefaultTimeout); // Check STUN candidate address. EXPECT_EQ(stunport->Candidates()[0].address().ipaddr(), kNatAddr1.ipaddr()); // Check STUN candidate related address. EXPECT_EQ(stunport->Candidates()[0].related_address(), stunport->GetLocalAddress()); // Verifying the related address for TURN candidate. // For TURN related address must be equal to the mapped address. auto turnport = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP); turnport->PrepareAddress(); ASSERT_EQ_WAIT(1U, turnport->Candidates().size(), kDefaultTimeout); EXPECT_EQ(kTurnUdpExtAddr.ipaddr(), turnport->Candidates()[0].address().ipaddr()); EXPECT_EQ(kNatAddr1.ipaddr(), turnport->Candidates()[0].related_address().ipaddr()); } // Test priority value overflow handling when preference is set to 3. TEST_F(PortTest, TestCandidatePriority) { cricket::Candidate cand1; cand1.set_priority(3); cricket::Candidate cand2; cand2.set_priority(1); EXPECT_TRUE(cand1.priority() > cand2.priority()); } // Test the Connection priority is calculated correctly. TEST_F(PortTest, TestConnectionPriority) { auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); lport->SetIceTiebreaker(kTiebreakerDefault); lport->set_type_preference(cricket::ICE_TYPE_PREFERENCE_HOST); auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); rport->SetIceTiebreaker(kTiebreakerDefault); rport->set_type_preference(cricket::ICE_TYPE_PREFERENCE_RELAY_UDP); lport->set_component(123); lport->AddCandidateAddress(SocketAddress("192.168.1.4", 1234)); rport->set_component(23); rport->AddCandidateAddress(SocketAddress("10.1.1.100", 1234)); EXPECT_EQ(0x7E001E85U, lport->Candidates()[0].priority()); EXPECT_EQ(0x2001EE9U, rport->Candidates()[0].priority()); // RFC 5245 // pair priority = 2^32*MIN(G,D) + 2*MAX(G,D) + (G>D?1:0) lport->SetIceRole(cricket::ICEROLE_CONTROLLING); rport->SetIceRole(cricket::ICEROLE_CONTROLLED); Connection* lconn = lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE); #if defined(WEBRTC_WIN) EXPECT_EQ(0x2001EE9FC003D0BU, lconn->priority()); #else EXPECT_EQ(0x2001EE9FC003D0BLLU, lconn->priority()); #endif lport->SetIceRole(cricket::ICEROLE_CONTROLLED); rport->SetIceRole(cricket::ICEROLE_CONTROLLING); Connection* rconn = rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE); #if defined(WEBRTC_WIN) EXPECT_EQ(0x2001EE9FC003D0AU, rconn->priority()); #else EXPECT_EQ(0x2001EE9FC003D0ALLU, rconn->priority()); #endif } // Note that UpdateState takes into account the estimated RTT, and the // correctness of using `kMaxExpectedSimulatedRtt` as an upper bound of RTT in // the following tests depends on the link rate and the delay distriubtion // configured in VirtualSocketServer::AddPacketToNetwork. The tests below use // the default setup where the RTT is deterministically one, which generates an // estimate given by `MINIMUM_RTT` = 100. TEST_F(PortTest, TestWritableState) { rtc::ScopedFakeClock clock; auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); // Set up channels. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Acquire addresses. ch1.Start(); ch2.Start(); ASSERT_EQ_SIMULATED_WAIT(1, ch1.complete_count(), kDefaultTimeout, clock); ASSERT_EQ_SIMULATED_WAIT(1, ch2.complete_count(), kDefaultTimeout, clock); // Send a ping from src to dst. ch1.CreateConnection(GetCandidate(ch2.port())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); // for TCP connect EXPECT_TRUE_SIMULATED_WAIT(ch1.conn()->connected(), kDefaultTimeout, clock); ch1.Ping(); SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock); // Data should be sendable before the connection is accepted. char data[] = "abcd"; int data_size = arraysize(data); rtc::PacketOptions options; EXPECT_EQ(data_size, ch1.conn()->Send(data, data_size, options)); // Accept the connection to return the binding response, transition to // writable, and allow data to be sent. ch2.AcceptConnection(GetCandidate(ch1.port())); EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch1.conn()->write_state(), kDefaultTimeout, clock); EXPECT_EQ(data_size, ch1.conn()->Send(data, data_size, options)); // Ask the connection to update state as if enough time has passed to lose // full writability and 5 pings went unresponded to. We'll accomplish the // latter by sending pings but not pumping messages. for (uint32_t i = 1; i <= CONNECTION_WRITE_CONNECT_FAILURES; ++i) { ch1.Ping(i); } int unreliable_timeout_delay = CONNECTION_WRITE_CONNECT_TIMEOUT + kMaxExpectedSimulatedRtt; ch1.conn()->UpdateState(unreliable_timeout_delay); EXPECT_EQ(Connection::STATE_WRITE_UNRELIABLE, ch1.conn()->write_state()); // Data should be able to be sent in this state. EXPECT_EQ(data_size, ch1.conn()->Send(data, data_size, options)); // And now allow the other side to process the pings and send binding // responses. EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch1.conn()->write_state(), kDefaultTimeout, clock); // Wait long enough for a full timeout (past however long we've already // waited). for (uint32_t i = 1; i <= CONNECTION_WRITE_CONNECT_FAILURES; ++i) { ch1.Ping(unreliable_timeout_delay + i); } ch1.conn()->UpdateState(unreliable_timeout_delay + CONNECTION_WRITE_TIMEOUT + kMaxExpectedSimulatedRtt); EXPECT_EQ(Connection::STATE_WRITE_TIMEOUT, ch1.conn()->write_state()); // Even if the connection has timed out, the Connection shouldn't block // the sending of data. EXPECT_EQ(data_size, ch1.conn()->Send(data, data_size, options)); ch1.Stop(); ch2.Stop(); } // Test writability states using the configured threshold value to replace // the default value given by `CONNECTION_WRITE_CONNECT_TIMEOUT` and // `CONNECTION_WRITE_CONNECT_FAILURES`. TEST_F(PortTest, TestWritableStateWithConfiguredThreshold) { rtc::ScopedFakeClock clock; auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); // Set up channels. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Acquire addresses. ch1.Start(); ch2.Start(); ASSERT_EQ_SIMULATED_WAIT(1, ch1.complete_count(), kDefaultTimeout, clock); ASSERT_EQ_SIMULATED_WAIT(1, ch2.complete_count(), kDefaultTimeout, clock); // Send a ping from src to dst. ch1.CreateConnection(GetCandidate(ch2.port())); ASSERT_TRUE(ch1.conn() != NULL); ch1.Ping(); SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock); // Accept the connection to return the binding response, transition to // writable, and allow data to be sent. ch2.AcceptConnection(GetCandidate(ch1.port())); EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE, ch1.conn()->write_state(), kDefaultTimeout, clock); ch1.conn()->set_unwritable_timeout(1000); ch1.conn()->set_unwritable_min_checks(3); // Send two checks. ch1.Ping(1); ch1.Ping(2); // We have not reached the timeout nor have we sent the minimum number of // checks to change the state to Unreliable. ch1.conn()->UpdateState(999); EXPECT_EQ(Connection::STATE_WRITABLE, ch1.conn()->write_state()); // We have not sent the minimum number of checks without responses. ch1.conn()->UpdateState(1000 + kMaxExpectedSimulatedRtt); EXPECT_EQ(Connection::STATE_WRITABLE, ch1.conn()->write_state()); // Last ping after which the candidate pair should become Unreliable after // timeout. ch1.Ping(3); // We have not reached the timeout. ch1.conn()->UpdateState(999); EXPECT_EQ(Connection::STATE_WRITABLE, ch1.conn()->write_state()); // We should be in the state Unreliable now. ch1.conn()->UpdateState(1000 + kMaxExpectedSimulatedRtt); EXPECT_EQ(Connection::STATE_WRITE_UNRELIABLE, ch1.conn()->write_state()); ch1.Stop(); ch2.Stop(); } TEST_F(PortTest, TestTimeoutForNeverWritable) { auto port1 = CreateUdpPort(kLocalAddr1); port1->SetIceRole(cricket::ICEROLE_CONTROLLING); auto port2 = CreateUdpPort(kLocalAddr2); port2->SetIceRole(cricket::ICEROLE_CONTROLLED); // Set up channels. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Acquire addresses. ch1.Start(); ch2.Start(); ch1.CreateConnection(GetCandidate(ch2.port())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); // Attempt to go directly to write timeout. for (uint32_t i = 1; i <= CONNECTION_WRITE_CONNECT_FAILURES; ++i) { ch1.Ping(i); } ch1.conn()->UpdateState(CONNECTION_WRITE_TIMEOUT + kMaxExpectedSimulatedRtt); EXPECT_EQ(Connection::STATE_WRITE_TIMEOUT, ch1.conn()->write_state()); } // This test verifies the connection setup between ICEMODE_FULL // and ICEMODE_LITE. // In this test `ch1` behaves like FULL mode client and we have created // port which responds to the ping message just like LITE client. TEST_F(PortTest, TestIceLiteConnectivity) { auto ice_full_port = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); auto* ice_full_port_ptr = ice_full_port.get(); auto ice_lite_port = CreateTestPort( kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreaker2); // Setup TestChannel. This behaves like FULL mode client. TestChannel ch1(std::move(ice_full_port)); ch1.SetIceMode(ICEMODE_FULL); // Start gathering candidates. ch1.Start(); ice_lite_port->PrepareAddress(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_FALSE(ice_lite_port->Candidates().empty()); ch1.CreateConnection(GetCandidate(ice_lite_port.get())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); // Send ping from full mode client. // This ping must not have USE_CANDIDATE_ATTR. ch1.Ping(); // Verify stun ping is without USE_CANDIDATE_ATTR. Getting message directly // from port. ASSERT_TRUE_WAIT(ice_full_port_ptr->last_stun_msg() != NULL, kDefaultTimeout); IceMessage* msg = ice_full_port_ptr->last_stun_msg(); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) == NULL); // Respond with a BINDING-RESPONSE from litemode client. // NOTE: Ideally we should't create connection at this stage from lite // port, as it should be done only after receiving ping with USE_CANDIDATE. // But we need a connection to send a response message. auto* con = ice_lite_port->CreateConnection( ice_full_port_ptr->Candidates()[0], cricket::Port::ORIGIN_MESSAGE); std::unique_ptr request = CopyStunMessage(*msg); con->SendStunBindingResponse(request.get()); // Feeding the respone message from litemode to the full mode connection. ch1.conn()->OnReadPacket(ice_lite_port->last_stun_buf()->data(), ice_lite_port->last_stun_buf()->size(), /* packet_time_us */ -1); // Verifying full mode connection becomes writable from the response. EXPECT_EQ_WAIT(Connection::STATE_WRITABLE, ch1.conn()->write_state(), kDefaultTimeout); EXPECT_TRUE_WAIT(ch1.nominated(), kDefaultTimeout); // Clear existing stun messsages. Otherwise we will process old stun // message right after we send ping. ice_full_port_ptr->Reset(); // Send ping. This must have USE_CANDIDATE_ATTR. ch1.Ping(); ASSERT_TRUE_WAIT(ice_full_port_ptr->last_stun_msg() != NULL, kDefaultTimeout); msg = ice_full_port_ptr->last_stun_msg(); EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) != NULL); ch1.Stop(); } namespace { // Utility function for testing goog ping. absl::optional GetSupportedGoogPingVersion(const StunMessage* msg) { auto goog_misc = msg->GetUInt16List(STUN_ATTR_GOOG_MISC_INFO); if (goog_misc == nullptr) { return absl::nullopt; } if (msg->type() == STUN_BINDING_REQUEST) { if (goog_misc->Size() < static_cast(cricket::IceGoogMiscInfoBindingRequestAttributeIndex:: SUPPORT_GOOG_PING_VERSION)) { return absl::nullopt; } return goog_misc->GetType( static_cast(cricket::IceGoogMiscInfoBindingRequestAttributeIndex:: SUPPORT_GOOG_PING_VERSION)); } if (msg->type() == STUN_BINDING_RESPONSE) { if (goog_misc->Size() < static_cast(cricket::IceGoogMiscInfoBindingResponseAttributeIndex:: SUPPORT_GOOG_PING_VERSION)) { return absl::nullopt; } return goog_misc->GetType( static_cast(cricket::IceGoogMiscInfoBindingResponseAttributeIndex:: SUPPORT_GOOG_PING_VERSION)); } return absl::nullopt; } } // namespace class GoogPingTest : public PortTest, public ::testing::WithParamInterface> {}; // This test verifies the announce/enable on/off behavior TEST_P(GoogPingTest, TestGoogPingAnnounceEnable) { IceFieldTrials trials; trials.announce_goog_ping = GetParam().first; trials.enable_goog_ping = GetParam().second; RTC_LOG(LS_INFO) << "Testing combination: " " announce: " << trials.announce_goog_ping << " enable:" << trials.enable_goog_ping; auto port1_unique = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); auto* port1 = port1_unique.get(); auto port2 = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreaker2); TestChannel ch1(std::move(port1_unique)); // Block usage of STUN_ATTR_USE_CANDIDATE so that // ch1.conn() will sent GOOG_PING_REQUEST directly. // This only makes test a bit shorter... ch1.SetIceMode(ICEMODE_LITE); // Start gathering candidates. ch1.Start(); port2->PrepareAddress(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_FALSE(port2->Candidates().empty()); ch1.CreateConnection(GetCandidate(port2.get())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); ch1.conn()->SetIceFieldTrials(&trials); // Send ping. ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* request1 = port1->last_stun_msg(); ASSERT_EQ(trials.enable_goog_ping, GetSupportedGoogPingVersion(request1) && GetSupportedGoogPingVersion(request1) >= kGoogPingVersion); auto* con = port2->CreateConnection(port1->Candidates()[0], cricket::Port::ORIGIN_MESSAGE); con->SetIceFieldTrials(&trials); con->SendStunBindingResponse(request1); // Then check the response matches the settings. const auto* response = port2->last_stun_msg(); EXPECT_EQ(response->type(), STUN_BINDING_RESPONSE); EXPECT_EQ(trials.enable_goog_ping && trials.announce_goog_ping, GetSupportedGoogPingVersion(response) && GetSupportedGoogPingVersion(response) >= kGoogPingVersion); // Feeding the respone message back. ch1.conn()->OnReadPacket(port2->last_stun_buf()->data(), port2->last_stun_buf()->size(), /* packet_time_us */ -1); port1->Reset(); port2->Reset(); ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* request2 = port1->last_stun_msg(); // It should be a GOOG_PING if both of these are TRUE if (trials.announce_goog_ping && trials.enable_goog_ping) { ASSERT_EQ(request2->type(), GOOG_PING_REQUEST); con->SendGoogPingResponse(request2); } else { ASSERT_EQ(request2->type(), STUN_BINDING_REQUEST); // If we sent a BINDING with enable, and we got a reply that // didn't contain announce, the next ping should not contain // the enable again. ASSERT_FALSE(GetSupportedGoogPingVersion(request2).has_value()); con->SendStunBindingResponse(request2); } const auto* response2 = port2->last_stun_msg(); ASSERT_TRUE(response2 != nullptr); // It should be a GOOG_PING_RESPONSE if both of these are TRUE if (trials.announce_goog_ping && trials.enable_goog_ping) { ASSERT_EQ(response2->type(), GOOG_PING_RESPONSE); } else { ASSERT_EQ(response2->type(), STUN_BINDING_RESPONSE); } ch1.Stop(); } // This test if a someone send a STUN_BINDING with unsupported version // (kGoogPingVersion == 0) TEST_F(PortTest, TestGoogPingUnsupportedVersionInStunBinding) { IceFieldTrials trials; trials.announce_goog_ping = true; trials.enable_goog_ping = true; auto port1_unique = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); auto* port1 = port1_unique.get(); auto port2 = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreaker2); TestChannel ch1(std::move(port1_unique)); // Block usage of STUN_ATTR_USE_CANDIDATE so that // ch1.conn() will sent GOOG_PING_REQUEST directly. // This only makes test a bit shorter... ch1.SetIceMode(ICEMODE_LITE); // Start gathering candidates. ch1.Start(); port2->PrepareAddress(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_FALSE(port2->Candidates().empty()); ch1.CreateConnection(GetCandidate(port2.get())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); ch1.conn()->SetIceFieldTrials(&trials); // Send ping. ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* request1 = port1->last_stun_msg(); ASSERT_TRUE(GetSupportedGoogPingVersion(request1) && GetSupportedGoogPingVersion(request1) >= kGoogPingVersion); // Modify the STUN message request1 to send GetSupportedGoogPingVersion == 0 auto modified_request1 = request1->Clone(); ASSERT_TRUE(modified_request1->RemoveAttribute(STUN_ATTR_GOOG_MISC_INFO) != nullptr); ASSERT_TRUE(modified_request1->RemoveAttribute(STUN_ATTR_MESSAGE_INTEGRITY) != nullptr); { auto list = StunAttribute::CreateUInt16ListAttribute(STUN_ATTR_GOOG_MISC_INFO); list->AddTypeAtIndex( static_cast( cricket::IceGoogMiscInfoBindingRequestAttributeIndex:: SUPPORT_GOOG_PING_VERSION), /* version */ 0); modified_request1->AddAttribute(std::move(list)); modified_request1->AddMessageIntegrity("rpass"); } auto* con = port2->CreateConnection(port1->Candidates()[0], cricket::Port::ORIGIN_MESSAGE); con->SetIceFieldTrials(&trials); con->SendStunBindingResponse(modified_request1.get()); // Then check the response matches the settings. const auto* response = port2->last_stun_msg(); EXPECT_EQ(response->type(), STUN_BINDING_RESPONSE); EXPECT_FALSE(GetSupportedGoogPingVersion(response)); ch1.Stop(); } // This test if a someone send a STUN_BINDING_RESPONSE with unsupported version // (kGoogPingVersion == 0) TEST_F(PortTest, TestGoogPingUnsupportedVersionInStunBindingResponse) { IceFieldTrials trials; trials.announce_goog_ping = true; trials.enable_goog_ping = true; auto port1_unique = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); auto* port1 = port1_unique.get(); auto port2 = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreaker2); TestChannel ch1(std::move(port1_unique)); // Block usage of STUN_ATTR_USE_CANDIDATE so that // ch1.conn() will sent GOOG_PING_REQUEST directly. // This only makes test a bit shorter... ch1.SetIceMode(ICEMODE_LITE); // Start gathering candidates. ch1.Start(); port2->PrepareAddress(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_FALSE(port2->Candidates().empty()); ch1.CreateConnection(GetCandidate(port2.get())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); ch1.conn()->SetIceFieldTrials(&trials); // Send ping. ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* request1 = port1->last_stun_msg(); ASSERT_TRUE(GetSupportedGoogPingVersion(request1) && GetSupportedGoogPingVersion(request1) >= kGoogPingVersion); auto* con = port2->CreateConnection(port1->Candidates()[0], cricket::Port::ORIGIN_MESSAGE); con->SetIceFieldTrials(&trials); con->SendStunBindingResponse(request1); // Then check the response matches the settings. const auto* response = port2->last_stun_msg(); EXPECT_EQ(response->type(), STUN_BINDING_RESPONSE); EXPECT_TRUE(GetSupportedGoogPingVersion(response)); // Modify the STUN message response to contain GetSupportedGoogPingVersion == // 0 auto modified_response = response->Clone(); ASSERT_TRUE(modified_response->RemoveAttribute(STUN_ATTR_GOOG_MISC_INFO) != nullptr); ASSERT_TRUE(modified_response->RemoveAttribute(STUN_ATTR_MESSAGE_INTEGRITY) != nullptr); ASSERT_TRUE(modified_response->RemoveAttribute(STUN_ATTR_FINGERPRINT) != nullptr); { auto list = StunAttribute::CreateUInt16ListAttribute(STUN_ATTR_GOOG_MISC_INFO); list->AddTypeAtIndex( static_cast( cricket::IceGoogMiscInfoBindingResponseAttributeIndex:: SUPPORT_GOOG_PING_VERSION), /* version */ 0); modified_response->AddAttribute(std::move(list)); modified_response->AddMessageIntegrity("rpass"); modified_response->AddFingerprint(); } rtc::ByteBufferWriter buf; modified_response->Write(&buf); // Feeding the modified respone message back. ch1.conn()->OnReadPacket(buf.Data(), buf.Length(), /* packet_time_us */ -1); port1->Reset(); port2->Reset(); ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); // This should now be a STUN_BINDING...without a kGoogPingVersion const IceMessage* request2 = port1->last_stun_msg(); EXPECT_EQ(request2->type(), STUN_BINDING_REQUEST); EXPECT_FALSE(GetSupportedGoogPingVersion(request2)); ch1.Stop(); } INSTANTIATE_TEST_SUITE_P(GoogPingTest, GoogPingTest, // test all combinations of pairs. ::testing::Values(std::make_pair(false, false), std::make_pair(true, false), std::make_pair(false, true), std::make_pair(true, true))); // This test checks that a change in attributes falls back to STUN_BINDING TEST_F(PortTest, TestChangeInAttributeMakesGoogPingFallsbackToStunBinding) { IceFieldTrials trials; trials.announce_goog_ping = true; trials.enable_goog_ping = true; auto port1_unique = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); auto* port1 = port1_unique.get(); auto port2 = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreaker2); TestChannel ch1(std::move(port1_unique)); // Block usage of STUN_ATTR_USE_CANDIDATE so that // ch1.conn() will sent GOOG_PING_REQUEST directly. // This only makes test a bit shorter... ch1.SetIceMode(ICEMODE_LITE); // Start gathering candidates. ch1.Start(); port2->PrepareAddress(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_FALSE(port2->Candidates().empty()); ch1.CreateConnection(GetCandidate(port2.get())); ASSERT_TRUE(ch1.conn() != nullptr); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); ch1.conn()->SetIceFieldTrials(&trials); // Send ping. ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* msg = port1->last_stun_msg(); auto* con = port2->CreateConnection(port1->Candidates()[0], cricket::Port::ORIGIN_MESSAGE); con->SetIceFieldTrials(&trials); // Feed the message into the connection. con->SendStunBindingResponse(msg); // The check reply wrt to settings. const auto* response = port2->last_stun_msg(); ASSERT_EQ(response->type(), STUN_BINDING_RESPONSE); ASSERT_TRUE(GetSupportedGoogPingVersion(response) >= kGoogPingVersion); // Feeding the respone message back. ch1.conn()->OnReadPacket(port2->last_stun_buf()->data(), port2->last_stun_buf()->size(), /* packet_time_us */ -1); port1->Reset(); port2->Reset(); ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* msg2 = port1->last_stun_msg(); // It should be a GOOG_PING if both of these are TRUE ASSERT_EQ(msg2->type(), GOOG_PING_REQUEST); con->SendGoogPingResponse(msg2); const auto* response2 = port2->last_stun_msg(); ASSERT_TRUE(response2 != nullptr); // It should be a GOOG_PING_RESPONSE. ASSERT_EQ(response2->type(), GOOG_PING_RESPONSE); // And now the third ping. port1->Reset(); port2->Reset(); // Modify the message to be sent. ch1.conn()->set_use_candidate_attr(!ch1.conn()->use_candidate_attr()); ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* msg3 = port1->last_stun_msg(); // It should be a STUN_BINDING_REQUEST ASSERT_EQ(msg3->type(), STUN_BINDING_REQUEST); ch1.Stop(); } // This test that an error response fall back to STUN_BINDING. TEST_F(PortTest, TestErrorResponseMakesGoogPingFallBackToStunBinding) { IceFieldTrials trials; trials.announce_goog_ping = true; trials.enable_goog_ping = true; auto port1_unique = CreateTestPort(kLocalAddr1, "lfrag", "lpass", cricket::ICEROLE_CONTROLLING, kTiebreaker1); auto* port1 = port1_unique.get(); auto port2 = CreateTestPort(kLocalAddr2, "rfrag", "rpass", cricket::ICEROLE_CONTROLLED, kTiebreaker2); TestChannel ch1(std::move(port1_unique)); // Block usage of STUN_ATTR_USE_CANDIDATE so that // ch1.conn() will sent GOOG_PING_REQUEST directly. // This only makes test a bit shorter... ch1.SetIceMode(ICEMODE_LITE); // Start gathering candidates. ch1.Start(); port2->PrepareAddress(); ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout); ASSERT_FALSE(port2->Candidates().empty()); ch1.CreateConnection(GetCandidate(port2.get())); ASSERT_TRUE(ch1.conn() != NULL); EXPECT_EQ(Connection::STATE_WRITE_INIT, ch1.conn()->write_state()); ch1.conn()->SetIceFieldTrials(&trials); // Send ping. ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* msg = port1->last_stun_msg(); auto* con = port2->CreateConnection(port1->Candidates()[0], cricket::Port::ORIGIN_MESSAGE); con->SetIceFieldTrials(&trials); // Feed the message into the connection. con->SendStunBindingResponse(msg); // The check reply wrt to settings. const auto* response = port2->last_stun_msg(); ASSERT_EQ(response->type(), STUN_BINDING_RESPONSE); ASSERT_TRUE(GetSupportedGoogPingVersion(response) >= kGoogPingVersion); // Feeding the respone message back. ch1.conn()->OnReadPacket(port2->last_stun_buf()->data(), port2->last_stun_buf()->size(), /* packet_time_us */ -1); port1->Reset(); port2->Reset(); ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* msg2 = port1->last_stun_msg(); // It should be a GOOG_PING. ASSERT_EQ(msg2->type(), GOOG_PING_REQUEST); con->SendGoogPingResponse(msg2); const auto* response2 = port2->last_stun_msg(); ASSERT_TRUE(response2 != nullptr); // It should be a GOOG_PING_RESPONSE. ASSERT_EQ(response2->type(), GOOG_PING_RESPONSE); // But rather than the RESPONSE...feedback an error. StunMessage error_response(GOOG_PING_ERROR_RESPONSE); error_response.SetTransactionIdForTesting(response2->transaction_id()); error_response.AddMessageIntegrity32("rpass"); rtc::ByteBufferWriter buf; error_response.Write(&buf); ch1.conn()->OnReadPacket(buf.Data(), buf.Length(), /* packet_time_us */ -1); // And now the third ping...this should be a binding. port1->Reset(); port2->Reset(); ch1.Ping(); ASSERT_TRUE_WAIT(port1->last_stun_msg() != NULL, kDefaultTimeout); const IceMessage* msg3 = port1->last_stun_msg(); // It should be a STUN_BINDING_REQUEST ASSERT_EQ(msg3->type(), STUN_BINDING_REQUEST); ch1.Stop(); } // This test case verifies that both the controlling port and the controlled // port will time out after connectivity is lost, if they are not marked as // "keep alive until pruned." TEST_F(PortTest, TestPortTimeoutIfNotKeptAlive) { rtc::ScopedFakeClock clock; int timeout_delay = 100; auto port1 = CreateUdpPort(kLocalAddr1); ConnectToSignalDestroyed(port1.get()); port1->set_timeout_delay(timeout_delay); // milliseconds port1->SetIceRole(cricket::ICEROLE_CONTROLLING); port1->SetIceTiebreaker(kTiebreaker1); auto port2 = CreateUdpPort(kLocalAddr2); ConnectToSignalDestroyed(port2.get()); port2->set_timeout_delay(timeout_delay); // milliseconds port2->SetIceRole(cricket::ICEROLE_CONTROLLED); port2->SetIceTiebreaker(kTiebreaker2); // Set up channels and ensure both ports will be deleted. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Simulate a connection that succeeds, and then is destroyed. StartConnectAndStopChannels(&ch1, &ch2); // After the connection is destroyed, the port will be destroyed because // none of them is marked as "keep alive until pruned. EXPECT_EQ_SIMULATED_WAIT(2, ports_destroyed(), 110, clock); } // Test that if after all connection are destroyed, new connections are created // and destroyed again, ports won't be destroyed until a timeout period passes // after the last set of connections are all destroyed. TEST_F(PortTest, TestPortTimeoutAfterNewConnectionCreatedAndDestroyed) { rtc::ScopedFakeClock clock; int timeout_delay = 100; auto port1 = CreateUdpPort(kLocalAddr1); ConnectToSignalDestroyed(port1.get()); port1->set_timeout_delay(timeout_delay); // milliseconds port1->SetIceRole(cricket::ICEROLE_CONTROLLING); port1->SetIceTiebreaker(kTiebreaker1); auto port2 = CreateUdpPort(kLocalAddr2); ConnectToSignalDestroyed(port2.get()); port2->set_timeout_delay(timeout_delay); // milliseconds port2->SetIceRole(cricket::ICEROLE_CONTROLLED); port2->SetIceTiebreaker(kTiebreaker2); // Set up channels and ensure both ports will be deleted. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Simulate a connection that succeeds, and then is destroyed. StartConnectAndStopChannels(&ch1, &ch2); SIMULATED_WAIT(ports_destroyed() > 0, 80, clock); EXPECT_EQ(0, ports_destroyed()); // Start the second set of connection and destroy them. ch1.CreateConnection(GetCandidate(ch2.port())); ch2.CreateConnection(GetCandidate(ch1.port())); ch1.Stop(); ch2.Stop(); SIMULATED_WAIT(ports_destroyed() > 0, 80, clock); EXPECT_EQ(0, ports_destroyed()); // The ports on both sides should be destroyed after timeout. EXPECT_TRUE_SIMULATED_WAIT(ports_destroyed() == 2, 30, clock); } // This test case verifies that neither the controlling port nor the controlled // port will time out after connectivity is lost if they are marked as "keep // alive until pruned". They will time out after they are pruned. TEST_F(PortTest, TestPortNotTimeoutUntilPruned) { rtc::ScopedFakeClock clock; int timeout_delay = 100; auto port1 = CreateUdpPort(kLocalAddr1); ConnectToSignalDestroyed(port1.get()); port1->set_timeout_delay(timeout_delay); // milliseconds port1->SetIceRole(cricket::ICEROLE_CONTROLLING); port1->SetIceTiebreaker(kTiebreaker1); auto port2 = CreateUdpPort(kLocalAddr2); ConnectToSignalDestroyed(port2.get()); port2->set_timeout_delay(timeout_delay); // milliseconds port2->SetIceRole(cricket::ICEROLE_CONTROLLED); port2->SetIceTiebreaker(kTiebreaker2); // The connection must not be destroyed before a connection is attempted. EXPECT_EQ(0, ports_destroyed()); port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); port2->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT); // Set up channels and keep the port alive. TestChannel ch1(std::move(port1)); TestChannel ch2(std::move(port2)); // Simulate a connection that succeeds, and then is destroyed. But ports // are kept alive. Ports won't be destroyed. StartConnectAndStopChannels(&ch1, &ch2); ch1.port()->KeepAliveUntilPruned(); ch2.port()->KeepAliveUntilPruned(); SIMULATED_WAIT(ports_destroyed() > 0, 150, clock); EXPECT_EQ(0, ports_destroyed()); // If they are pruned now, they will be destroyed right away. ch1.port()->Prune(); ch2.port()->Prune(); // The ports on both sides should be destroyed after timeout. EXPECT_TRUE_SIMULATED_WAIT(ports_destroyed() == 2, 1, clock); } TEST_F(PortTest, TestSupportsProtocol) { auto udp_port = CreateUdpPort(kLocalAddr1); EXPECT_TRUE(udp_port->SupportsProtocol(UDP_PROTOCOL_NAME)); EXPECT_FALSE(udp_port->SupportsProtocol(TCP_PROTOCOL_NAME)); auto stun_port = CreateStunPort(kLocalAddr1, nat_socket_factory1()); EXPECT_TRUE(stun_port->SupportsProtocol(UDP_PROTOCOL_NAME)); EXPECT_FALSE(stun_port->SupportsProtocol(TCP_PROTOCOL_NAME)); auto tcp_port = CreateTcpPort(kLocalAddr1); EXPECT_TRUE(tcp_port->SupportsProtocol(TCP_PROTOCOL_NAME)); EXPECT_TRUE(tcp_port->SupportsProtocol(SSLTCP_PROTOCOL_NAME)); EXPECT_FALSE(tcp_port->SupportsProtocol(UDP_PROTOCOL_NAME)); auto turn_port = CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP); EXPECT_TRUE(turn_port->SupportsProtocol(UDP_PROTOCOL_NAME)); EXPECT_FALSE(turn_port->SupportsProtocol(TCP_PROTOCOL_NAME)); } // Test that SetIceParameters updates the component, ufrag and password // on both the port itself and its candidates. TEST_F(PortTest, TestSetIceParameters) { auto port = CreateTestPort(kLocalAddr1, "ufrag1", "password1"); port->SetIceTiebreaker(kTiebreakerDefault); port->PrepareAddress(); EXPECT_EQ(1UL, port->Candidates().size()); port->SetIceParameters(1, "ufrag2", "password2"); EXPECT_EQ(1, port->component()); EXPECT_EQ("ufrag2", port->username_fragment()); EXPECT_EQ("password2", port->password()); const Candidate& candidate = port->Candidates()[0]; EXPECT_EQ(1, candidate.component()); EXPECT_EQ("ufrag2", candidate.username()); EXPECT_EQ("password2", candidate.password()); } TEST_F(PortTest, TestAddConnectionWithSameAddress) { auto port = CreateTestPort(kLocalAddr1, "ufrag1", "password1"); port->SetIceTiebreaker(kTiebreakerDefault); port->PrepareAddress(); EXPECT_EQ(1u, port->Candidates().size()); rtc::SocketAddress address("1.1.1.1", 5000); cricket::Candidate candidate(1, "udp", address, 0, "", "", "relay", 0, ""); cricket::Connection* conn1 = port->CreateConnection(candidate, Port::ORIGIN_MESSAGE); cricket::Connection* conn_in_use = port->GetConnection(address); EXPECT_EQ(conn1, conn_in_use); EXPECT_EQ(0u, conn_in_use->remote_candidate().generation()); // Creating with a candidate with the same address again will get us a // different connection with the new candidate. candidate.set_generation(2); cricket::Connection* conn2 = port->CreateConnection(candidate, Port::ORIGIN_MESSAGE); EXPECT_NE(conn1, conn2); conn_in_use = port->GetConnection(address); EXPECT_EQ(conn2, conn_in_use); EXPECT_EQ(2u, conn_in_use->remote_candidate().generation()); // Make sure the new connection was not deleted. rtc::Thread::Current()->ProcessMessages(300); EXPECT_TRUE(port->GetConnection(address) != nullptr); } // TODO(webrtc:11463) : Move Connection tests into separate unit test // splitting out shared test code as needed. class ConnectionTest : public PortTest { public: ConnectionTest() { lport_ = CreateTestPort(kLocalAddr1, "lfrag", "lpass"); rport_ = CreateTestPort(kLocalAddr2, "rfrag", "rpass"); lport_->SetIceRole(cricket::ICEROLE_CONTROLLING); lport_->SetIceTiebreaker(kTiebreaker1); rport_->SetIceRole(cricket::ICEROLE_CONTROLLED); rport_->SetIceTiebreaker(kTiebreaker2); lport_->PrepareAddress(); rport_->PrepareAddress(); } rtc::ScopedFakeClock clock_; int num_state_changes_ = 0; Connection* CreateConnection(IceRole role) { Connection* conn; if (role == cricket::ICEROLE_CONTROLLING) { conn = lport_->CreateConnection(rport_->Candidates()[0], Port::ORIGIN_MESSAGE); } else { conn = rport_->CreateConnection(lport_->Candidates()[0], Port::ORIGIN_MESSAGE); } conn->SignalStateChange.connect(this, &ConnectionTest::OnConnectionStateChange); return conn; } void SendPingAndCaptureReply(Connection* lconn, Connection* rconn, int64_t ms, rtc::BufferT* reply) { TestPort* lport = lconn->PortForTest() == lport_.get() ? lport_.get() : rport_.get(); TestPort* rport = rconn->PortForTest() == rport_.get() ? rport_.get() : lport_.get(); lconn->Ping(rtc::TimeMillis()); ASSERT_TRUE_WAIT(lport->last_stun_msg(), kDefaultTimeout); ASSERT_TRUE(lport->last_stun_buf()); rconn->OnReadPacket(lport->last_stun_buf()->data(), lport->last_stun_buf()->size(), /* packet_time_us */ -1); clock_.AdvanceTime(webrtc::TimeDelta::Millis(ms)); ASSERT_TRUE_WAIT(rport->last_stun_msg(), kDefaultTimeout); ASSERT_TRUE(rport->last_stun_buf()); *reply = std::move(*rport->last_stun_buf()); } void SendPingAndReceiveResponse(Connection* lconn, Connection* rconn, int64_t ms) { rtc::BufferT reply; SendPingAndCaptureReply(lconn, rconn, ms, &reply); lconn->OnReadPacket(reply.data(), reply.size(), /* packet_time_us */ -1); } void OnConnectionStateChange(Connection* connection) { num_state_changes_++; } private: std::unique_ptr lport_; std::unique_ptr rport_; }; TEST_F(ConnectionTest, ConnectionForgetLearnedState) { Connection* lconn = CreateConnection(ICEROLE_CONTROLLING); Connection* rconn = CreateConnection(ICEROLE_CONTROLLED); EXPECT_FALSE(lconn->writable()); EXPECT_FALSE(lconn->receiving()); EXPECT_TRUE(std::isnan(lconn->GetRttEstimate().GetAverage())); EXPECT_EQ(lconn->GetRttEstimate().GetVariance(), std::numeric_limits::infinity()); SendPingAndReceiveResponse(lconn, rconn, 10); EXPECT_TRUE(lconn->writable()); EXPECT_TRUE(lconn->receiving()); EXPECT_EQ(lconn->GetRttEstimate().GetAverage(), 10); EXPECT_EQ(lconn->GetRttEstimate().GetVariance(), std::numeric_limits::infinity()); SendPingAndReceiveResponse(lconn, rconn, 11); EXPECT_TRUE(lconn->writable()); EXPECT_TRUE(lconn->receiving()); EXPECT_NEAR(lconn->GetRttEstimate().GetAverage(), 10, 0.5); EXPECT_LT(lconn->GetRttEstimate().GetVariance(), std::numeric_limits::infinity()); lconn->ForgetLearnedState(); EXPECT_FALSE(lconn->writable()); EXPECT_FALSE(lconn->receiving()); EXPECT_TRUE(std::isnan(lconn->GetRttEstimate().GetAverage())); EXPECT_EQ(lconn->GetRttEstimate().GetVariance(), std::numeric_limits::infinity()); } TEST_F(ConnectionTest, ConnectionForgetLearnedStateDiscardsPendingPings) { Connection* lconn = CreateConnection(ICEROLE_CONTROLLING); Connection* rconn = CreateConnection(ICEROLE_CONTROLLED); SendPingAndReceiveResponse(lconn, rconn, 10); EXPECT_TRUE(lconn->writable()); EXPECT_TRUE(lconn->receiving()); rtc::BufferT reply; SendPingAndCaptureReply(lconn, rconn, 10, &reply); lconn->ForgetLearnedState(); EXPECT_FALSE(lconn->writable()); EXPECT_FALSE(lconn->receiving()); lconn->OnReadPacket(reply.data(), reply.size(), /* packet_time_us */ -1); // That reply was discarded due to the ForgetLearnedState() while it was // outstanding. EXPECT_FALSE(lconn->writable()); EXPECT_FALSE(lconn->receiving()); // But sending a new ping and getting a reply works. SendPingAndReceiveResponse(lconn, rconn, 11); EXPECT_TRUE(lconn->writable()); EXPECT_TRUE(lconn->receiving()); } TEST_F(ConnectionTest, ConnectionForgetLearnedStateDoesNotTriggerStateChange) { Connection* lconn = CreateConnection(ICEROLE_CONTROLLING); Connection* rconn = CreateConnection(ICEROLE_CONTROLLED); EXPECT_EQ(num_state_changes_, 0); SendPingAndReceiveResponse(lconn, rconn, 10); EXPECT_TRUE(lconn->writable()); EXPECT_TRUE(lconn->receiving()); EXPECT_EQ(num_state_changes_, 2); lconn->ForgetLearnedState(); EXPECT_FALSE(lconn->writable()); EXPECT_FALSE(lconn->receiving()); EXPECT_EQ(num_state_changes_, 2); } } // namespace cricket