Reland of landing: Implement RTCConfiguration.iceCandidatePoolSize.

webrtc/p2p/client/basicportallocator_unittest.cc

Index: webrtc/p2p/client/basicportallocator_unittest.cc
diff --git a/webrtc/p2p/client/basicportallocator_unittest.cc b/webrtc/p2p/client/basicportallocator_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..83d904f181480deca88bc1701af4e7e451e6208c
--- /dev/null
+++ b/webrtc/p2p/client/basicportallocator_unittest.cc
@@ -0,0 +1,1500 @@
+/*
+ *  Copyright 2009 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 <algorithm>
+#include <memory>
+
+#include "webrtc/p2p/base/basicpacketsocketfactory.h"
+#include "webrtc/p2p/base/p2pconstants.h"
+#include "webrtc/p2p/base/p2ptransportchannel.h"
+#include "webrtc/p2p/base/testrelayserver.h"
+#include "webrtc/p2p/base/teststunserver.h"
+#include "webrtc/p2p/base/testturnserver.h"
+#include "webrtc/p2p/client/basicportallocator.h"
+#include "webrtc/p2p/client/httpportallocator.h"
+#include "webrtc/base/fakenetwork.h"
+#include "webrtc/base/firewallsocketserver.h"
+#include "webrtc/base/gunit.h"
+#include "webrtc/base/helpers.h"
+#include "webrtc/base/ipaddress.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/base/natserver.h"
+#include "webrtc/base/natsocketfactory.h"
+#include "webrtc/base/network.h"
+#include "webrtc/base/physicalsocketserver.h"
+#include "webrtc/base/socketaddress.h"
+#include "webrtc/base/ssladapter.h"
+#include "webrtc/base/thread.h"
+#include "webrtc/base/virtualsocketserver.h"
+
+using cricket::ServerAddresses;
+using rtc::IPAddress;
+using rtc::SocketAddress;
+using rtc::Thread;
+
+static const SocketAddress kClientAddr("11.11.11.11", 0);
+static const SocketAddress kLoopbackAddr("127.0.0.1", 0);
+static const SocketAddress kPrivateAddr("192.168.1.11", 0);
+static const SocketAddress kPrivateAddr2("192.168.1.12", 0);
+static const SocketAddress kClientIPv6Addr("2401:fa00:4:1000:be30:5bff:fee5:c3",
+                                           0);
+static const SocketAddress kClientAddr2("22.22.22.22", 0);
+static const SocketAddress kNatUdpAddr("77.77.77.77", rtc::NAT_SERVER_UDP_PORT);
+static const SocketAddress kNatTcpAddr("77.77.77.77", rtc::NAT_SERVER_TCP_PORT);
+static const SocketAddress kRemoteClientAddr("22.22.22.22", 0);
+static const SocketAddress kStunAddr("99.99.99.1", cricket::STUN_SERVER_PORT);
+static const SocketAddress kRelayUdpIntAddr("99.99.99.2", 5000);
+static const SocketAddress kRelayUdpExtAddr("99.99.99.3", 5001);
+static const SocketAddress kRelayTcpIntAddr("99.99.99.2", 5002);
+static const SocketAddress kRelayTcpExtAddr("99.99.99.3", 5003);
+static const SocketAddress kRelaySslTcpIntAddr("99.99.99.2", 5004);
+static const SocketAddress kRelaySslTcpExtAddr("99.99.99.3", 5005);
+static const SocketAddress kTurnUdpIntAddr("99.99.99.4", 3478);
+static const SocketAddress kTurnTcpIntAddr("99.99.99.5", 3478);
+static const SocketAddress kTurnUdpExtAddr("99.99.99.6", 0);
+
+// Minimum and maximum port for port range tests.
+static const int kMinPort = 10000;
+static const int kMaxPort = 10099;
+
+// Based on ICE_UFRAG_LENGTH
+static const char kIceUfrag0[] = "TESTICEUFRAG0000";
+// Based on ICE_PWD_LENGTH
+static const char kIcePwd0[] = "TESTICEPWD00000000000000";
+
+static const char kContentName[] = "test content";
+
+static const int kDefaultAllocationTimeout = 1000;
+static const char kTurnUsername[] = "test";
+static const char kTurnPassword[] = "test";
+
+namespace cricket {
+
+// Helper for dumping candidates
+std::ostream& operator<<(std::ostream& os, const cricket::Candidate& c) {
+  os << c.ToString();
+  return os;
+}
+
+}  // namespace cricket
+
+class BasicPortAllocatorTest : public testing::Test,
+                               public sigslot::has_slots<> {
+ public:
+  BasicPortAllocatorTest()
+      : pss_(new rtc::PhysicalSocketServer),
+        vss_(new rtc::VirtualSocketServer(pss_.get())),
+        fss_(new rtc::FirewallSocketServer(vss_.get())),
+        ss_scope_(fss_.get()),
+        nat_factory_(vss_.get(), kNatUdpAddr, kNatTcpAddr),
+        nat_socket_factory_(new rtc::BasicPacketSocketFactory(&nat_factory_)),
+        stun_server_(
+            cricket::TestStunServer::Create(Thread::Current(), kStunAddr)),
+        relay_server_(Thread::Current(),
+                      kRelayUdpIntAddr,
+                      kRelayUdpExtAddr,
+                      kRelayTcpIntAddr,
+                      kRelayTcpExtAddr,
+                      kRelaySslTcpIntAddr,
+                      kRelaySslTcpExtAddr),
+        turn_server_(Thread::Current(), kTurnUdpIntAddr, kTurnUdpExtAddr),
+        candidate_allocation_done_(false) {
+    cricket::ServerAddresses stun_servers;
+    stun_servers.insert(kStunAddr);
+    // Passing the addresses of GTURN servers will enable GTURN in
+    // Basicportallocator.
+    allocator_.reset(new cricket::BasicPortAllocator(
+        &network_manager_, stun_servers, kRelayUdpIntAddr, kRelayTcpIntAddr,
+        kRelaySslTcpIntAddr));
+    allocator_->set_step_delay(cricket::kMinimumStepDelay);
+  }
+
+  void AddInterface(const SocketAddress& addr) {
+    network_manager_.AddInterface(addr);
+  }
+  void AddInterface(const SocketAddress& addr, const std::string& if_name) {
+    network_manager_.AddInterface(addr, if_name);
+  }
+  void AddInterface(const SocketAddress& addr,
+                    const std::string& if_name,
+                    rtc::AdapterType type) {
+    network_manager_.AddInterface(addr, if_name, type);
+  }
+  // The default route is the public address that STUN server will observe when
+  // the endpoint is sitting on the public internet and the local port is bound
+  // to the "any" address. This may be different from the default local address
+  // which the endpoint observes. This can occur if the route to the public
+  // endpoint like 8.8.8.8 (specified as the default local address) is
+  // different from the route to the STUN server (the default route).
+  void AddInterfaceAsDefaultRoute(const SocketAddress& addr) {
+    AddInterface(addr);
+    // When a binding comes from the any address, the |addr| will be used as the
+    // srflx address.
+    vss_->SetDefaultRoute(addr.ipaddr());
+  }
+  void RemoveInterface(const SocketAddress& addr) {
+    network_manager_.RemoveInterface(addr);
+  }
+  bool SetPortRange(int min_port, int max_port) {
+    return allocator_->SetPortRange(min_port, max_port);
+  }
+  // Endpoint is on the public network. No STUN or TURN.
+  void ResetWithNoServersOrNat() {
+    allocator_.reset(new cricket::BasicPortAllocator(&network_manager_));
+    allocator_->set_step_delay(cricket::kMinimumStepDelay);
+  }
+  // Endpoint is behind a NAT, with STUN specified.
+  void ResetWithStunServerAndNat(const rtc::SocketAddress& stun_server) {
+    ResetWithStunServer(stun_server, true);
+  }
+  // Endpoint is on the public network, with STUN specified.
+  void ResetWithStunServerNoNat(const rtc::SocketAddress& stun_server) {
+    ResetWithStunServer(stun_server, false);
+  }
+  // Endpoint is on the public network, with TURN specified.
+  void ResetWithTurnServersNoNat(const rtc::SocketAddress& udp_turn,
+                                 const rtc::SocketAddress& tcp_turn) {
+    ResetWithNoServersOrNat();
+    AddTurnServers(udp_turn, tcp_turn);
+  }
+
+  void AddTurnServers(const rtc::SocketAddress& udp_turn,
+                      const rtc::SocketAddress& tcp_turn) {
+    cricket::RelayServerConfig turn_server(cricket::RELAY_TURN);
+    cricket::RelayCredentials credentials(kTurnUsername, kTurnPassword);
+    turn_server.credentials = credentials;
+
+    if (!udp_turn.IsNil()) {
+      turn_server.ports.push_back(
+          cricket::ProtocolAddress(kTurnUdpIntAddr, cricket::PROTO_UDP, false));
+    }
+    if (!tcp_turn.IsNil()) {
+      turn_server.ports.push_back(
+          cricket::ProtocolAddress(kTurnTcpIntAddr, cricket::PROTO_TCP, false));
+    }
+    allocator_->AddTurnServer(turn_server);
+  }
+
+  bool CreateSession(int component) {
+    session_ = CreateSession("session", component);
+    if (!session_) {
+      return false;
+    }
+    return true;
+  }
+
+  bool CreateSession(int component, const std::string& content_name) {
+    session_ = CreateSession("session", content_name, component);
+    if (!session_) {
+      return false;
+    }
+    return true;
+  }
+
+  std::unique_ptr<cricket::PortAllocatorSession> CreateSession(
+      const std::string& sid,
+      int component) {
+    return CreateSession(sid, kContentName, component);
+  }
+
+  std::unique_ptr<cricket::PortAllocatorSession> CreateSession(
+      const std::string& sid,
+      const std::string& content_name,
+      int component) {
+    return CreateSession(sid, content_name, component, kIceUfrag0, kIcePwd0);
+  }
+
+  std::unique_ptr<cricket::PortAllocatorSession> CreateSession(
+      const std::string& sid,
+      const std::string& content_name,
+      int component,
+      const std::string& ice_ufrag,
+      const std::string& ice_pwd) {
+    std::unique_ptr<cricket::PortAllocatorSession> session =
+        allocator_->CreateSession(sid, content_name, component, ice_ufrag,
+                                  ice_pwd);
+    session->SignalPortReady.connect(this,
+                                     &BasicPortAllocatorTest::OnPortReady);
+    session->SignalCandidatesReady.connect(
+        this, &BasicPortAllocatorTest::OnCandidatesReady);
+    session->SignalCandidatesAllocationDone.connect(
+        this, &BasicPortAllocatorTest::OnCandidatesAllocationDone);
+    return session;
+  }
+
+  static bool CheckCandidate(const cricket::Candidate& c,
+                             int component,
+                             const std::string& type,
+                             const std::string& proto,
+                             const SocketAddress& addr) {
+    return (c.component() == component && c.type() == type &&
+            c.protocol() == proto && c.address().ipaddr() == addr.ipaddr() &&
+            ((addr.port() == 0 && (c.address().port() != 0)) ||
+             (c.address().port() == addr.port())));
+  }
+  static bool CheckPort(const rtc::SocketAddress& addr,
+                        int min_port,
+                        int max_port) {
+    return (addr.port() >= min_port && addr.port() <= max_port);
+  }
+
+  void OnCandidatesAllocationDone(cricket::PortAllocatorSession* session) {
+    // We should only get this callback once, except in the mux test where
+    // we have multiple port allocation sessions.
+    if (session == session_.get()) {
+      ASSERT_FALSE(candidate_allocation_done_);
+      candidate_allocation_done_ = true;
+    }
+    EXPECT_TRUE(session->CandidatesAllocationDone());
+  }
+
+  // Check if all ports allocated have send-buffer size |expected|. If
+  // |expected| == -1, check if GetOptions returns SOCKET_ERROR.
+  void CheckSendBufferSizesOfAllPorts(int expected) {
+    std::vector<cricket::PortInterface*>::iterator it;
+    for (it = ports_.begin(); it < ports_.end(); ++it) {
+      int send_buffer_size;
+      if (expected == -1) {
+        EXPECT_EQ(SOCKET_ERROR,
+                  (*it)->GetOption(rtc::Socket::OPT_SNDBUF, &send_buffer_size));
+      } else {
+        EXPECT_EQ(0,
+                  (*it)->GetOption(rtc::Socket::OPT_SNDBUF, &send_buffer_size));
+        ASSERT_EQ(expected, send_buffer_size);
+      }
+    }
+  }
+
+  // This function starts the port/address gathering and check the existence of
+  // candidates as specified. When |expect_stun_candidate| is true,
+  // |stun_candidate_addr| carries the expected reflective address, which is
+  // also the related address for TURN candidate if it is expected. Otherwise,
+  // it should be ignore.
+  void CheckDisableAdapterEnumeration(
+      uint32_t total_ports,
+      const rtc::IPAddress& host_candidate_addr,
+      const rtc::IPAddress& stun_candidate_addr,
+      const rtc::IPAddress& relay_candidate_udp_transport_addr,
+      const rtc::IPAddress& relay_candidate_tcp_transport_addr) {
+    network_manager_.set_default_local_addresses(kPrivateAddr.ipaddr(),
+                                                 rtc::IPAddress());
+    if (!session_) {
+      EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+    }
+    session_->set_flags(session_->flags() |
+                        cricket::PORTALLOCATOR_DISABLE_ADAPTER_ENUMERATION |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+    allocator().set_allow_tcp_listen(false);
+    session_->StartGettingPorts();
+    EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+
+    uint32_t total_candidates = 0;
+    if (!host_candidate_addr.IsNil()) {
+      EXPECT_PRED5(CheckCandidate, candidates_[total_candidates],
+                   cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+                   rtc::SocketAddress(kPrivateAddr.ipaddr(), 0));
+      ++total_candidates;
+    }
+    if (!stun_candidate_addr.IsNil()) {
+      EXPECT_PRED5(CheckCandidate, candidates_[total_candidates],
+                   cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+                   rtc::SocketAddress(stun_candidate_addr, 0));
+      rtc::IPAddress related_address = host_candidate_addr;
+      if (host_candidate_addr.IsNil()) {
+        related_address =
+            rtc::GetAnyIP(candidates_[total_candidates].address().family());
+      }
+      EXPECT_EQ(related_address,
+                candidates_[total_candidates].related_address().ipaddr());
+      ++total_candidates;
+    }
+    if (!relay_candidate_udp_transport_addr.IsNil()) {
+      EXPECT_PRED5(CheckCandidate, candidates_[total_candidates],
+                   cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+                   rtc::SocketAddress(relay_candidate_udp_transport_addr, 0));
+      EXPECT_EQ(stun_candidate_addr,
+                candidates_[total_candidates].related_address().ipaddr());
+      ++total_candidates;
+    }
+    if (!relay_candidate_tcp_transport_addr.IsNil()) {
+      EXPECT_PRED5(CheckCandidate, candidates_[total_candidates],
+                   cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+                   rtc::SocketAddress(relay_candidate_tcp_transport_addr, 0));
+      EXPECT_EQ(stun_candidate_addr,
+                candidates_[total_candidates].related_address().ipaddr());
+      ++total_candidates;
+    }
+
+    EXPECT_EQ(total_candidates, candidates_.size());
+    EXPECT_EQ(total_ports, ports_.size());
+  }
+
+ protected:
+  cricket::BasicPortAllocator& allocator() { return *allocator_; }
+
+  void OnPortReady(cricket::PortAllocatorSession* ses,
+                   cricket::PortInterface* port) {
+    LOG(LS_INFO) << "OnPortReady: " << port->ToString();
+    ports_.push_back(port);
+    // Make sure the new port is added to ReadyPorts.
+    auto ready_ports = ses->ReadyPorts();
+    EXPECT_NE(ready_ports.end(),
+              std::find(ready_ports.begin(), ready_ports.end(), port));
+  }
+  void OnCandidatesReady(cricket::PortAllocatorSession* ses,
+                         const std::vector<cricket::Candidate>& candidates) {
+    for (size_t i = 0; i < candidates.size(); ++i) {
+      LOG(LS_INFO) << "OnCandidatesReady: " << candidates[i].ToString();
+      candidates_.push_back(candidates[i]);
+    }
+    // Make sure the new candidates are added to Candidates.
+    auto ses_candidates = ses->ReadyCandidates();
+    for (const cricket::Candidate& candidate : candidates) {
+      EXPECT_NE(
+          ses_candidates.end(),
+          std::find(ses_candidates.begin(), ses_candidates.end(), candidate));
+    }
+  }
+
+  bool HasRelayAddress(const cricket::ProtocolAddress& proto_addr) {
+    for (size_t i = 0; i < allocator_->turn_servers().size(); ++i) {
+      cricket::RelayServerConfig server_config = allocator_->turn_servers()[i];
+      cricket::PortList::const_iterator relay_port;
+      for (relay_port = server_config.ports.begin();
+           relay_port != server_config.ports.end(); ++relay_port) {
+        if (proto_addr.address == relay_port->address &&
+            proto_addr.proto == relay_port->proto)
+          return true;
+      }
+    }
+    return false;
+  }
+
+  void ResetWithStunServer(const rtc::SocketAddress& stun_server,
+                           bool with_nat) {
+    if (with_nat) {
+      nat_server_.reset(new rtc::NATServer(
+          rtc::NAT_OPEN_CONE, vss_.get(), kNatUdpAddr, kNatTcpAddr, vss_.get(),
+          rtc::SocketAddress(kNatUdpAddr.ipaddr(), 0)));
+    } else {
+      nat_socket_factory_.reset(new rtc::BasicPacketSocketFactory());
+    }
+
+    ServerAddresses stun_servers;
+    if (!stun_server.IsNil()) {
+      stun_servers.insert(stun_server);
+    }
+    allocator_.reset(new cricket::BasicPortAllocator(
+        &network_manager_, nat_socket_factory_.get(), stun_servers));
+    allocator().set_step_delay(cricket::kMinimumStepDelay);
+  }
+
+  std::unique_ptr<rtc::PhysicalSocketServer> pss_;
+  std::unique_ptr<rtc::VirtualSocketServer> vss_;
+  std::unique_ptr<rtc::FirewallSocketServer> fss_;
+  rtc::SocketServerScope ss_scope_;
+  std::unique_ptr<rtc::NATServer> nat_server_;
+  rtc::NATSocketFactory nat_factory_;
+  std::unique_ptr<rtc::BasicPacketSocketFactory> nat_socket_factory_;
+  std::unique_ptr<cricket::TestStunServer> stun_server_;
+  cricket::TestRelayServer relay_server_;
+  cricket::TestTurnServer turn_server_;
+  rtc::FakeNetworkManager network_manager_;
+  std::unique_ptr<cricket::BasicPortAllocator> allocator_;
+  std::unique_ptr<cricket::PortAllocatorSession> session_;
+  std::vector<cricket::PortInterface*> ports_;
+  std::vector<cricket::Candidate> candidates_;
+  bool candidate_allocation_done_;
+};
+
+// Tests that we can init the port allocator and create a session.
+TEST_F(BasicPortAllocatorTest, TestBasic) {
+  EXPECT_EQ(&network_manager_, allocator().network_manager());
+  EXPECT_EQ(kStunAddr, *allocator().stun_servers().begin());
+  ASSERT_EQ(1u, allocator().turn_servers().size());
+  EXPECT_EQ(cricket::RELAY_GTURN, allocator().turn_servers()[0].type);
+  // Empty relay credentials are used for GTURN.
+  EXPECT_TRUE(allocator().turn_servers()[0].credentials.username.empty());
+  EXPECT_TRUE(allocator().turn_servers()[0].credentials.password.empty());
+  EXPECT_TRUE(HasRelayAddress(
+      cricket::ProtocolAddress(kRelayUdpIntAddr, cricket::PROTO_UDP)));
+  EXPECT_TRUE(HasRelayAddress(
+      cricket::ProtocolAddress(kRelayTcpIntAddr, cricket::PROTO_TCP)));
+  EXPECT_TRUE(HasRelayAddress(
+      cricket::ProtocolAddress(kRelaySslTcpIntAddr, cricket::PROTO_SSLTCP)));
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  EXPECT_FALSE(session_->CandidatesAllocationDone());
+}
+
+// Tests that our network filtering works properly.
+TEST_F(BasicPortAllocatorTest, TestIgnoreOnlyLoopbackNetworkByDefault) {
+  AddInterface(SocketAddress(IPAddress(0x12345600U), 0), "test_eth0",
+               rtc::ADAPTER_TYPE_ETHERNET);
+  AddInterface(SocketAddress(IPAddress(0x12345601U), 0), "test_wlan0",
+               rtc::ADAPTER_TYPE_WIFI);
+  AddInterface(SocketAddress(IPAddress(0x12345602U), 0), "test_cell0",
+               rtc::ADAPTER_TYPE_CELLULAR);
+  AddInterface(SocketAddress(IPAddress(0x12345603U), 0), "test_vpn0",
+               rtc::ADAPTER_TYPE_VPN);
+  AddInterface(SocketAddress(IPAddress(0x12345604U), 0), "test_lo",
+               rtc::ADAPTER_TYPE_LOOPBACK);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_STUN |
+                      cricket::PORTALLOCATOR_DISABLE_RELAY |
+                      cricket::PORTALLOCATOR_DISABLE_TCP);
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, candidates_.size());
+  for (cricket::Candidate candidate : candidates_) {
+    EXPECT_LT(candidate.address().ip(), 0x12345604U);
+  }
+}
+
+TEST_F(BasicPortAllocatorTest, TestIgnoreNetworksAccordingToIgnoreMask) {
+  AddInterface(SocketAddress(IPAddress(0x12345600U), 0), "test_eth0",
+               rtc::ADAPTER_TYPE_ETHERNET);
+  AddInterface(SocketAddress(IPAddress(0x12345601U), 0), "test_wlan0",
+               rtc::ADAPTER_TYPE_WIFI);
+  AddInterface(SocketAddress(IPAddress(0x12345602U), 0), "test_cell0",
+               rtc::ADAPTER_TYPE_CELLULAR);
+  allocator_->SetNetworkIgnoreMask(rtc::ADAPTER_TYPE_ETHERNET |
+                                   rtc::ADAPTER_TYPE_LOOPBACK |
+                                   rtc::ADAPTER_TYPE_WIFI);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_STUN |
+                      cricket::PORTALLOCATOR_DISABLE_RELAY |
+                      cricket::PORTALLOCATOR_DISABLE_TCP);
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(1U, candidates_.size());
+  EXPECT_EQ(0x12345602U, candidates_[0].address().ip());
+}
+
+// Tests that we allocator session not trying to allocate ports for every 250ms.
+TEST_F(BasicPortAllocatorTest, TestNoNetworkInterface) {
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  // Waiting for one second to make sure BasicPortAllocatorSession has not
+  // called OnAllocate multiple times. In old behavior it's called every 250ms.
+  // When there are no network interfaces, each execution of OnAllocate will
+  // result in SignalCandidatesAllocationDone signal.
+  rtc::Thread::Current()->ProcessMessages(1000);
+  EXPECT_TRUE(candidate_allocation_done_);
+  EXPECT_EQ(0U, candidates_.size());
+}
+
+// Test that we could use loopback interface as host candidate.
+TEST_F(BasicPortAllocatorTest, TestLoopbackNetworkInterface) {
+  AddInterface(kLoopbackAddr, "test_loopback", rtc::ADAPTER_TYPE_LOOPBACK);
+  allocator_->SetNetworkIgnoreMask(0);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_STUN |
+                      cricket::PORTALLOCATOR_DISABLE_RELAY |
+                      cricket::PORTALLOCATOR_DISABLE_TCP);
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(1U, candidates_.size());
+}
+
+// Tests that we can get all the desired addresses successfully.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsWithMinimumStepDelay) {
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[3],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpExtAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[4],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "tcp",
+               kRelayTcpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[5],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[6],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "ssltcp",
+               kRelaySslTcpIntAddr);
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that when the same network interface is brought down and up, the
+// port allocator session will restart a new allocation sequence if
+// it is not stopped.
+TEST_F(BasicPortAllocatorTest, TestSameNetworkDownAndUpWhenSessionNotStopped) {
+  std::string if_name("test_net0");
+  AddInterface(kClientAddr, if_name);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+  candidate_allocation_done_ = false;
+  candidates_.clear();
+  ports_.clear();
+
+  RemoveInterface(kClientAddr);
+  ASSERT_EQ_WAIT(0U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(0U, ports_.size());
+  EXPECT_FALSE(candidate_allocation_done_);
+
+  // When the same interfaces are added again, new candidates/ports should be
+  // generated.
+  AddInterface(kClientAddr, if_name);
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that when the same network interface is brought down and up, the
+// port allocator session will not restart a new allocation sequence if
+// it is stopped.
+TEST_F(BasicPortAllocatorTest, TestSameNetworkDownAndUpWhenSessionStopped) {
+  std::string if_name("test_net0");
+  AddInterface(kClientAddr, if_name);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+  session_->StopGettingPorts();
+  candidates_.clear();
+  ports_.clear();
+
+  RemoveInterface(kClientAddr);
+  ASSERT_EQ_WAIT(0U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(0U, ports_.size());
+
+  // When the same interfaces are added again, new candidates/ports should not
+  // be generated because the session has stopped.
+  AddInterface(kClientAddr, if_name);
+  ASSERT_EQ_WAIT(0U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(0U, ports_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Verify candidates with default step delay of 1sec.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsWithOneSecondStepDelay) {
+  AddInterface(kClientAddr);
+  allocator_->set_step_delay(cricket::kDefaultStepDelay);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(2U, candidates_.size(), 1000);
+  EXPECT_EQ(2U, ports_.size());
+  ASSERT_EQ_WAIT(4U, candidates_.size(), 2000);
+  EXPECT_EQ(3U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[3],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpExtAddr);
+  ASSERT_EQ_WAIT(6U, candidates_.size(), 1500);
+  EXPECT_PRED5(CheckCandidate, candidates_[4],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "tcp",
+               kRelayTcpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[5],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+  EXPECT_EQ(4U, ports_.size());
+  ASSERT_EQ_WAIT(7U, candidates_.size(), 2000);
+  EXPECT_PRED5(CheckCandidate, candidates_[6],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "ssltcp",
+               kRelaySslTcpIntAddr);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+  // If we Stop gathering now, we shouldn't get a second "done" callback.
+  session_->StopGettingPorts();
+}
+
+TEST_F(BasicPortAllocatorTest, TestSetupVideoRtpPortsWithNormalSendBuffers) {
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(
+      CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP, cricket::CN_VIDEO));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_TRUE(candidate_allocation_done_);
+  // If we Stop gathering now, we shouldn't get a second "done" callback.
+  session_->StopGettingPorts();
+
+  // All ports should have unset send-buffer sizes.
+  CheckSendBufferSizesOfAllPorts(-1);
+}
+
+// Tests that we can get callback after StopGetAllPorts.
+TEST_F(BasicPortAllocatorTest, TestStopGetAllPorts) {
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(2U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(2U, ports_.size());
+  session_->StopGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+}
+
+// Test that we restrict client ports appropriately when a port range is set.
+// We check the candidates for udp/stun/tcp ports, and the from address
+// for relay ports.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsPortRange) {
+  AddInterface(kClientAddr);
+  // Check that an invalid port range fails.
+  EXPECT_FALSE(SetPortRange(kMaxPort, kMinPort));
+  // Check that a null port range succeeds.
+  EXPECT_TRUE(SetPortRange(0, 0));
+  // Check that a valid port range succeeds.
+  EXPECT_TRUE(SetPortRange(kMinPort, kMaxPort));
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, ports_.size());
+  // Check the port number for the UDP port object.
+  EXPECT_PRED3(CheckPort, candidates_[0].address(), kMinPort, kMaxPort);
+  // Check the port number for the STUN port object.
+  EXPECT_PRED3(CheckPort, candidates_[1].address(), kMinPort, kMaxPort);
+  // Check the port number used to connect to the relay server.
+  EXPECT_PRED3(CheckPort, relay_server_.GetConnection(0).source(), kMinPort,
+               kMaxPort);
+  // Check the port number for the TCP port object.
+  EXPECT_PRED3(CheckPort, candidates_[5].address(), kMinPort, kMaxPort);
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that we don't crash or malfunction if we have no network adapters.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsNoAdapters) {
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  rtc::Thread::Current()->ProcessMessages(100);
+  // Without network adapter, we should not get any candidate.
+  EXPECT_EQ(0U, candidates_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that when enumeration is disabled, we should not have any ports when
+// candidate_filter() is set to CF_RELAY and no relay is specified.
+TEST_F(BasicPortAllocatorTest,
+       TestDisableAdapterEnumerationWithoutNatRelayTransportOnly) {
+  ResetWithStunServerNoNat(kStunAddr);
+  allocator().set_candidate_filter(cricket::CF_RELAY);
+  // Expect to see no ports and no candidates.
+  CheckDisableAdapterEnumeration(0U, rtc::IPAddress(), rtc::IPAddress(),
+                                 rtc::IPAddress(), rtc::IPAddress());
+}
+
+// Test that even with multiple interfaces, the result should still be a single
+// default private, one STUN and one TURN candidate since we bind to any address
+// (i.e. all 0s).
+TEST_F(BasicPortAllocatorTest,
+       TestDisableAdapterEnumerationBehindNatMultipleInterfaces) {
+  AddInterface(kPrivateAddr);
+  AddInterface(kPrivateAddr2);
+  ResetWithStunServerAndNat(kStunAddr);
+  AddTurnServers(kTurnUdpIntAddr, rtc::SocketAddress());
+
+  // Enable IPv6 here. Since the network_manager doesn't have IPv6 default
+  // address set and we have no IPv6 STUN server, there should be no IPv6
+  // candidates.
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_ENABLE_IPV6);
+
+  // Expect to see 3 ports for IPv4: HOST/STUN, TURN/UDP and TCP ports, 2 ports
+  // for IPv6: HOST, and TCP. Only IPv4 candidates: a default private, STUN and
+  // TURN/UDP candidates.
+  CheckDisableAdapterEnumeration(5U, kPrivateAddr.ipaddr(),
+                                 kNatUdpAddr.ipaddr(), kTurnUdpExtAddr.ipaddr(),
+                                 rtc::IPAddress());
+}
+
+// Test that we should get a default private, STUN, TURN/UDP and TURN/TCP
+// candidates when both TURN/UDP and TURN/TCP servers are specified.
+TEST_F(BasicPortAllocatorTest, TestDisableAdapterEnumerationBehindNatWithTcp) {
+  turn_server_.AddInternalSocket(kTurnTcpIntAddr, cricket::PROTO_TCP);
+  AddInterface(kPrivateAddr);
+  ResetWithStunServerAndNat(kStunAddr);
+  AddTurnServers(kTurnUdpIntAddr, kTurnTcpIntAddr);
+  // Expect to see 4 ports - STUN, TURN/UDP, TURN/TCP and TCP port. A default
+  // private, STUN, TURN/UDP, and TURN/TCP candidates.
+  CheckDisableAdapterEnumeration(4U, kPrivateAddr.ipaddr(),
+                                 kNatUdpAddr.ipaddr(), kTurnUdpExtAddr.ipaddr(),
+                                 kTurnUdpExtAddr.ipaddr());
+}
+
+// Test that when adapter enumeration is disabled, for endpoints without
+// STUN/TURN specified, a default private candidate is still generated.
+TEST_F(BasicPortAllocatorTest,
+       TestDisableAdapterEnumerationWithoutNatOrServers) {
+  ResetWithNoServersOrNat();
+  // Expect to see 2 ports: STUN and TCP ports, one default private candidate.
+  CheckDisableAdapterEnumeration(2U, kPrivateAddr.ipaddr(), rtc::IPAddress(),
+                                 rtc::IPAddress(), rtc::IPAddress());
+}
+
+// Test that when adapter enumeration is disabled, with
+// PORTALLOCATOR_DISABLE_LOCALHOST_CANDIDATE specified, for endpoints not behind
+// a NAT, there is no local candidate.
+TEST_F(BasicPortAllocatorTest,
+       TestDisableAdapterEnumerationWithoutNatLocalhostCandidateDisabled) {
+  ResetWithStunServerNoNat(kStunAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_DEFAULT_LOCAL_CANDIDATE);
+  // Expect to see 2 ports: STUN and TCP ports, localhost candidate and STUN
+  // candidate.
+  CheckDisableAdapterEnumeration(2U, rtc::IPAddress(), rtc::IPAddress(),
+                                 rtc::IPAddress(), rtc::IPAddress());
+}
+
+// Test that when adapter enumeration is disabled, with
+// PORTALLOCATOR_DISABLE_LOCALHOST_CANDIDATE specified, for endpoints not behind
+// a NAT, there is no local candidate. However, this specified default route
+// (kClientAddr) which was discovered when sending STUN requests, will become
+// the srflx addresses.
+TEST_F(
+    BasicPortAllocatorTest,
+    TestDisableAdapterEnumerationWithoutNatLocalhostCandidateDisabledWithDifferentDefaultRoute) {
+  ResetWithStunServerNoNat(kStunAddr);
+  AddInterfaceAsDefaultRoute(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_DEFAULT_LOCAL_CANDIDATE);
+  // Expect to see 2 ports: STUN and TCP ports, localhost candidate and STUN
+  // candidate.
+  CheckDisableAdapterEnumeration(2U, rtc::IPAddress(), kClientAddr.ipaddr(),
+                                 rtc::IPAddress(), rtc::IPAddress());
+}
+
+// Test that when adapter enumeration is disabled, with
+// PORTALLOCATOR_DISABLE_LOCALHOST_CANDIDATE specified, for endpoints behind a
+// NAT, there is only one STUN candidate.
+TEST_F(BasicPortAllocatorTest,
+       TestDisableAdapterEnumerationWithNatLocalhostCandidateDisabled) {
+  ResetWithStunServerAndNat(kStunAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_DEFAULT_LOCAL_CANDIDATE);
+  // Expect to see 2 ports: STUN and TCP ports, and single STUN candidate.
+  CheckDisableAdapterEnumeration(2U, rtc::IPAddress(), kNatUdpAddr.ipaddr(),
+                                 rtc::IPAddress(), rtc::IPAddress());
+}
+
+// Test that we disable relay over UDP, and only TCP is used when connecting to
+// the relay server.
+TEST_F(BasicPortAllocatorTest, TestDisableUdpTurn) {
+  turn_server_.AddInternalSocket(kTurnTcpIntAddr, cricket::PROTO_TCP);
+  AddInterface(kClientAddr);
+  ResetWithStunServerAndNat(kStunAddr);
+  AddTurnServers(kTurnUdpIntAddr, kTurnTcpIntAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_UDP_RELAY |
+                      cricket::PORTALLOCATOR_DISABLE_UDP |
+                      cricket::PORTALLOCATOR_DISABLE_STUN |
+                      cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+
+  // Expect to see 2 ports and 2 candidates - TURN/TCP and TCP ports, TCP and
+  // TURN/TCP candidates.
+  EXPECT_EQ(2U, ports_.size());
+  EXPECT_EQ(2U, candidates_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kTurnUdpExtAddr);
+  // The TURN candidate should use TCP to contact the TURN server.
+  EXPECT_EQ(cricket::TCP_PROTOCOL_NAME, candidates_[0].relay_protocol());
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+}
+
+// Disable for asan, see
+// https://code.google.com/p/webrtc/issues/detail?id=4743 for details.
+#if !defined(ADDRESS_SANITIZER)
+
+// Test that we can get OnCandidatesAllocationDone callback when all the ports
+// are disabled.
+TEST_F(BasicPortAllocatorTest, TestDisableAllPorts) {
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->set_flags(cricket::PORTALLOCATOR_DISABLE_UDP |
+                      cricket::PORTALLOCATOR_DISABLE_STUN |
+                      cricket::PORTALLOCATOR_DISABLE_RELAY |
+                      cricket::PORTALLOCATOR_DISABLE_TCP);
+  session_->StartGettingPorts();
+  rtc::Thread::Current()->ProcessMessages(100);
+  EXPECT_EQ(0U, candidates_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that we don't crash or malfunction if we can't create UDP sockets.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsNoUdpSockets) {
+  AddInterface(kClientAddr);
+  fss_->set_udp_sockets_enabled(false);
+  EXPECT_TRUE(CreateSession(1));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(5U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(2U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpExtAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "tcp",
+               kRelayTcpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[3],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[4],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "ssltcp",
+               kRelaySslTcpIntAddr);
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+#endif  // if !defined(ADDRESS_SANITIZER)
+
+// Test that we don't crash or malfunction if we can't create UDP sockets or
+// listen on TCP sockets. We still give out a local TCP address, since
+// apparently this is needed for the remote side to accept our connection.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsNoUdpSocketsNoTcpListen) {
+  AddInterface(kClientAddr);
+  fss_->set_udp_sockets_enabled(false);
+  fss_->set_tcp_listen_enabled(false);
+  EXPECT_TRUE(CreateSession(1));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(5U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(2U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0], 1, "relay", "udp",
+               kRelayUdpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1], 1, "relay", "udp",
+               kRelayUdpExtAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[2], 1, "relay", "tcp",
+               kRelayTcpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[3], 1, "local", "tcp", kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[4], 1, "relay", "ssltcp",
+               kRelaySslTcpIntAddr);
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that we don't crash or malfunction if we can't create any sockets.
+// TODO(deadbeef): Find a way to exit early here.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsNoSockets) {
+  AddInterface(kClientAddr);
+  fss_->set_tcp_sockets_enabled(false);
+  fss_->set_udp_sockets_enabled(false);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  WAIT(candidates_.size() > 0, 2000);
+  // TODO(deadbeef): Check candidate_allocation_done signal.
+  // In case of Relay, ports creation will succeed but sockets will fail.
+  // There is no error reporting from RelayEntry to handle this failure.
+}
+
+// Testing STUN timeout.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsNoUdpAllowed) {
+  fss_->AddRule(false, rtc::FP_UDP, rtc::FD_ANY, kClientAddr);
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_EQ_WAIT(2U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(2U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+  // RelayPort connection timeout is 3sec. TCP connection with RelayServer
+  // will be tried after 3 seconds.
+  EXPECT_EQ_WAIT(6U, candidates_.size(), 4000);
+  EXPECT_EQ(3U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[3],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "tcp",
+               kRelayTcpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[4],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "ssltcp",
+               kRelaySslTcpIntAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[5],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               kRelayUdpExtAddr);
+  // Stun Timeout is 9sec.
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, 9000);
+}
+
+TEST_F(BasicPortAllocatorTest, TestCandidatePriorityOfMultipleInterfaces) {
+  AddInterface(kClientAddr);
+  AddInterface(kClientAddr2);
+  // Allocating only host UDP ports. This is done purely for testing
+  // convenience.
+  allocator().set_flags(cricket::PORTALLOCATOR_DISABLE_TCP |
+                        cricket::PORTALLOCATOR_DISABLE_STUN |
+                        cricket::PORTALLOCATOR_DISABLE_RELAY);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  ASSERT_EQ(2U, candidates_.size());
+  EXPECT_EQ(2U, ports_.size());
+  // Candidates priorities should be different.
+  EXPECT_NE(candidates_[0].priority(), candidates_[1].priority());
+}
+
+// Test to verify ICE restart process.
+TEST_F(BasicPortAllocatorTest, TestGetAllPortsRestarts) {
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_TRUE(candidate_allocation_done_);
+  // TODO(deadbeef): Extend this to verify ICE restart.
+}
+
+// Test ICE candidate filter mechanism with options Relay/Host/Reflexive.
+// This test also verifies that when the allocator is only allowed to use
+// relay (i.e. IceTransportsType is relay), the raddr is an empty
+// address with the correct family. This is to prevent any local
+// reflective address leakage in the sdp line.
+TEST_F(BasicPortAllocatorTest, TestCandidateFilterWithRelayOnly) {
+  AddInterface(kClientAddr);
+  // GTURN is not configured here.
+  ResetWithTurnServersNoNat(kTurnUdpIntAddr, rtc::SocketAddress());
+  allocator().set_candidate_filter(cricket::CF_RELAY);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+
+  EXPECT_EQ(1U, candidates_.size());
+  EXPECT_EQ(1U, ports_.size());  // Only Relay port will be in ready state.
+  for (size_t i = 0; i < candidates_.size(); ++i) {
+    EXPECT_EQ(std::string(cricket::RELAY_PORT_TYPE), candidates_[i].type());
+    EXPECT_EQ(
+        candidates_[0].related_address(),
+        rtc::EmptySocketAddressWithFamily(candidates_[0].address().family()));
+  }
+}
+
+TEST_F(BasicPortAllocatorTest, TestCandidateFilterWithHostOnly) {
+  AddInterface(kClientAddr);
+  allocator().set_flags(cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  allocator().set_candidate_filter(cricket::CF_HOST);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(2U, candidates_.size());  // Host UDP/TCP candidates only.
+  EXPECT_EQ(2U, ports_.size());       // UDP/TCP ports only.
+  for (size_t i = 0; i < candidates_.size(); ++i) {
+    EXPECT_EQ(std::string(cricket::LOCAL_PORT_TYPE), candidates_[i].type());
+  }
+}
+
+// Host is behind the NAT.
+TEST_F(BasicPortAllocatorTest, TestCandidateFilterWithReflexiveOnly) {
+  AddInterface(kPrivateAddr);
+  ResetWithStunServerAndNat(kStunAddr);
+
+  allocator().set_flags(cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  allocator().set_candidate_filter(cricket::CF_REFLEXIVE);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  // Host is behind NAT, no private address will be exposed. Hence only UDP
+  // port with STUN candidate will be sent outside.
+  EXPECT_EQ(1U, candidates_.size());  // Only STUN candidate.
+  EXPECT_EQ(1U, ports_.size());       // Only UDP port will be in ready state.
+  for (size_t i = 0; i < candidates_.size(); ++i) {
+    EXPECT_EQ(std::string(cricket::STUN_PORT_TYPE), candidates_[i].type());
+    EXPECT_EQ(
+        candidates_[0].related_address(),
+        rtc::EmptySocketAddressWithFamily(candidates_[0].address().family()));
+  }
+}
+
+// Host is not behind the NAT.
+TEST_F(BasicPortAllocatorTest, TestCandidateFilterWithReflexiveOnlyAndNoNAT) {
+  AddInterface(kClientAddr);
+  allocator().set_flags(cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  allocator().set_candidate_filter(cricket::CF_REFLEXIVE);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  // Host has a public address, both UDP and TCP candidates will be exposed.
+  EXPECT_EQ(2U, candidates_.size());  // Local UDP + TCP candidate.
+  EXPECT_EQ(2U, ports_.size());  //  UDP and TCP ports will be in ready state.
+  for (size_t i = 0; i < candidates_.size(); ++i) {
+    EXPECT_EQ(std::string(cricket::LOCAL_PORT_TYPE), candidates_[i].type());
+  }
+}
+
+// Test that we get the same ufrag and pwd for all candidates.
+TEST_F(BasicPortAllocatorTest, TestEnableSharedUfrag) {
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(7U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[5],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+  EXPECT_EQ(4U, ports_.size());
+  EXPECT_EQ(kIceUfrag0, candidates_[0].username());
+  EXPECT_EQ(kIceUfrag0, candidates_[1].username());
+  EXPECT_EQ(kIceUfrag0, candidates_[2].username());
+  EXPECT_EQ(kIcePwd0, candidates_[0].password());
+  EXPECT_EQ(kIcePwd0, candidates_[1].password());
+  EXPECT_TRUE(candidate_allocation_done_);
+}
+
+// Test that when PORTALLOCATOR_ENABLE_SHARED_SOCKET is enabled only one port
+// is allocated for udp and stun. Also verify there is only one candidate
+// (local) if stun candidate is same as local candidate, which will be the case
+// in a public network like the below test.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithoutNat) {
+  AddInterface(kClientAddr);
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(6U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(3U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+}
+
+// Test that when PORTALLOCATOR_ENABLE_SHARED_SOCKET is enabled only one port
+// is allocated for udp and stun. In this test we should expect both stun and
+// local candidates as client behind a nat.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithNat) {
+  AddInterface(kClientAddr);
+  ResetWithStunServerAndNat(kStunAddr);
+
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(3U, candidates_.size(), kDefaultAllocationTimeout);
+  ASSERT_EQ(2U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               rtc::SocketAddress(kNatUdpAddr.ipaddr(), 0));
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(3U, candidates_.size());
+}
+
+// Test TURN port in shared socket mode with UDP and TCP TURN server addresses.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithoutNatUsingTurn) {
+  turn_server_.AddInternalSocket(kTurnTcpIntAddr, cricket::PROTO_TCP);
+  AddInterface(kClientAddr);
+  allocator_.reset(new cricket::BasicPortAllocator(&network_manager_));
+
+  AddTurnServers(kTurnUdpIntAddr, kTurnTcpIntAddr);
+
+  allocator_->set_step_delay(cricket::kMinimumStepDelay);
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  ASSERT_EQ_WAIT(3U, candidates_.size(), kDefaultAllocationTimeout);
+  ASSERT_EQ(3U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(3U, candidates_.size());
+}
+
+// Testing DNS resolve for the TURN server, this will test AllocationSequence
+// handling the unresolved address signal from TurnPort.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithServerAddressResolve) {
+  turn_server_.AddInternalSocket(rtc::SocketAddress("127.0.0.1", 3478),
+                                 cricket::PROTO_UDP);
+  AddInterface(kClientAddr);
+  allocator_.reset(new cricket::BasicPortAllocator(&network_manager_));
+  cricket::RelayServerConfig turn_server(cricket::RELAY_TURN);
+  cricket::RelayCredentials credentials(kTurnUsername, kTurnPassword);
+  turn_server.credentials = credentials;
+  turn_server.ports.push_back(cricket::ProtocolAddress(
+      rtc::SocketAddress("localhost", 3478), cricket::PROTO_UDP, false));
+  allocator_->AddTurnServer(turn_server);
+
+  allocator_->set_step_delay(cricket::kMinimumStepDelay);
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  EXPECT_EQ_WAIT(2U, ports_.size(), kDefaultAllocationTimeout);
+}
+
+// Test that when PORTALLOCATOR_ENABLE_SHARED_SOCKET is enabled only one port
+// is allocated for udp/stun/turn. In this test we should expect all local,
+// stun and turn candidates.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithNatUsingTurn) {
+  AddInterface(kClientAddr);
+  ResetWithStunServerAndNat(kStunAddr);
+
+  AddTurnServers(kTurnUdpIntAddr, rtc::SocketAddress());
+
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  ASSERT_EQ_WAIT(3U, candidates_.size(), kDefaultAllocationTimeout);
+  ASSERT_EQ(2U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               rtc::SocketAddress(kNatUdpAddr.ipaddr(), 0));
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(3U, candidates_.size());
+  // Local port will be created first and then TURN port.
+  EXPECT_EQ(2U, ports_[0]->Candidates().size());
+  EXPECT_EQ(1U, ports_[1]->Candidates().size());
+}
+
+// Test that when PORTALLOCATOR_ENABLE_SHARED_SOCKET is enabled and the TURN
+// server is also used as the STUN server, we should get 'local', 'stun', and
+// 'relay' candidates.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithNatUsingTurnAsStun) {
+  AddInterface(kClientAddr);
+  // Use an empty SocketAddress to add a NAT without STUN server.
+  ResetWithStunServerAndNat(SocketAddress());
+  AddTurnServers(kTurnUdpIntAddr, rtc::SocketAddress());
+
+  // Must set the step delay to 0 to make sure the relay allocation phase is
+  // started before the STUN candidates are obtained, so that the STUN binding
+  // response is processed when both StunPort and TurnPort exist to reproduce
+  // webrtc issue 3537.
+  allocator_->set_step_delay(0);
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  ASSERT_EQ_WAIT(3U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               rtc::SocketAddress(kNatUdpAddr.ipaddr(), 0));
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  EXPECT_EQ(candidates_[2].related_address(), candidates_[1].address());
+
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(3U, candidates_.size());
+  // Local port will be created first and then TURN port.
+  EXPECT_EQ(2U, ports_[0]->Candidates().size());
+  EXPECT_EQ(1U, ports_[1]->Candidates().size());
+}
+
+// Test that when only a TCP TURN server is available, we do NOT use it as
+// a UDP STUN server, as this could leak our IP address. Thus we should only
+// expect two ports, a UDPPort and TurnPort.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithNatUsingTurnTcpOnly) {
+  turn_server_.AddInternalSocket(kTurnTcpIntAddr, cricket::PROTO_TCP);
+  AddInterface(kClientAddr);
+  ResetWithStunServerAndNat(rtc::SocketAddress());
+  AddTurnServers(rtc::SocketAddress(), kTurnTcpIntAddr);
+
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  ASSERT_EQ_WAIT(2U, candidates_.size(), kDefaultAllocationTimeout);
+  ASSERT_EQ(2U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(2U, candidates_.size());
+  EXPECT_EQ(1U, ports_[0]->Candidates().size());
+  EXPECT_EQ(1U, ports_[1]->Candidates().size());
+}
+
+// Test that even when PORTALLOCATOR_ENABLE_SHARED_SOCKET is NOT enabled, the
+// TURN server is used as the STUN server and we get 'local', 'stun', and
+// 'relay' candidates.
+// TODO(deadbeef): Remove this test when support for non-shared socket mode
+// is removed.
+TEST_F(BasicPortAllocatorTest, TestNonSharedSocketWithNatUsingTurnAsStun) {
+  AddInterface(kClientAddr);
+  // Use an empty SocketAddress to add a NAT without STUN server.
+  ResetWithStunServerAndNat(SocketAddress());
+  AddTurnServers(kTurnUdpIntAddr, rtc::SocketAddress());
+
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  ASSERT_EQ_WAIT(3U, candidates_.size(), kDefaultAllocationTimeout);
+  ASSERT_EQ(3U, ports_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               rtc::SocketAddress(kNatUdpAddr.ipaddr(), 0));
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  // Not using shared socket, so the STUN request's server reflexive address
+  // should be different than the TURN request's server reflexive address.
+  EXPECT_NE(candidates_[2].related_address(), candidates_[1].address());
+
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_EQ(3U, candidates_.size());
+  EXPECT_EQ(1U, ports_[0]->Candidates().size());
+  EXPECT_EQ(1U, ports_[1]->Candidates().size());
+  EXPECT_EQ(1U, ports_[2]->Candidates().size());
+}
+
+// Test that even when both a STUN and TURN server are configured, the TURN
+// server is used as a STUN server and we get a 'stun' candidate.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketWithNatUsingTurnAndStun) {
+  AddInterface(kClientAddr);
+  // Configure with STUN server but destroy it, so we can ensure that it's
+  // the TURN server actually being used as a STUN server.
+  ResetWithStunServerAndNat(kStunAddr);
+  stun_server_.reset();
+  AddTurnServers(kTurnUdpIntAddr, rtc::SocketAddress());
+
+  allocator_->set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+                        cricket::PORTALLOCATOR_DISABLE_TCP);
+
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+
+  ASSERT_EQ_WAIT(3U, candidates_.size(), kDefaultAllocationTimeout);
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "stun", "udp",
+               rtc::SocketAddress(kNatUdpAddr.ipaddr(), 0));
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "relay", "udp",
+               rtc::SocketAddress(kTurnUdpExtAddr.ipaddr(), 0));
+  EXPECT_EQ(candidates_[2].related_address(), candidates_[1].address());
+
+  // Don't bother waiting for STUN timeout, since we already verified
+  // that we got a STUN candidate from the TURN server.
+}
+
+// This test verifies when PORTALLOCATOR_ENABLE_SHARED_SOCKET flag is enabled
+// and fail to generate STUN candidate, local UDP candidate is generated
+// properly.
+TEST_F(BasicPortAllocatorTest, TestSharedSocketNoUdpAllowed) {
+  allocator().set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_DISABLE_RELAY |
+                        cricket::PORTALLOCATOR_DISABLE_TCP |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  fss_->AddRule(false, rtc::FP_UDP, rtc::FD_ANY, kClientAddr);
+  AddInterface(kClientAddr);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(1U, ports_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(1U, candidates_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  // STUN timeout is 9sec. We need to wait to get candidate done signal.
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, 10000);
+  EXPECT_EQ(1U, candidates_.size());
+}
+
+// Test that when the NetworkManager doesn't have permission to enumerate
+// adapters, the PORTALLOCATOR_DISABLE_ADAPTER_ENUMERATION is specified
+// automatically.
+TEST_F(BasicPortAllocatorTest, TestNetworkPermissionBlocked) {
+  network_manager_.set_default_local_addresses(kPrivateAddr.ipaddr(),
+                                               rtc::IPAddress());
+  network_manager_.set_enumeration_permission(
+      rtc::NetworkManager::ENUMERATION_BLOCKED);
+  allocator().set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_DISABLE_RELAY |
+                        cricket::PORTALLOCATOR_DISABLE_TCP |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  EXPECT_EQ(0U, allocator_->flags() &
+                    cricket::PORTALLOCATOR_DISABLE_ADAPTER_ENUMERATION);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  EXPECT_EQ(0U, session_->flags() &
+                    cricket::PORTALLOCATOR_DISABLE_ADAPTER_ENUMERATION);
+  session_->StartGettingPorts();
+  EXPECT_EQ_WAIT(1U, ports_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(1U, candidates_.size());
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kPrivateAddr);
+  EXPECT_NE(0U, session_->flags() &
+                    cricket::PORTALLOCATOR_DISABLE_ADAPTER_ENUMERATION);
+}
+
+// This test verifies allocator can use IPv6 addresses along with IPv4.
+TEST_F(BasicPortAllocatorTest, TestEnableIPv6Addresses) {
+  allocator().set_flags(allocator().flags() |
+                        cricket::PORTALLOCATOR_DISABLE_RELAY |
+                        cricket::PORTALLOCATOR_ENABLE_IPV6 |
+                        cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
+  AddInterface(kClientIPv6Addr);
+  AddInterface(kClientAddr);
+  allocator_->set_step_delay(cricket::kMinimumStepDelay);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(4U, ports_.size(), kDefaultAllocationTimeout);
+  EXPECT_EQ(4U, candidates_.size());
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, kDefaultAllocationTimeout);
+  EXPECT_PRED5(CheckCandidate, candidates_[0],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientIPv6Addr);
+  EXPECT_PRED5(CheckCandidate, candidates_[1],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "udp",
+               kClientAddr);
+  EXPECT_PRED5(CheckCandidate, candidates_[2],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientIPv6Addr);
+  EXPECT_PRED5(CheckCandidate, candidates_[3],
+               cricket::ICE_CANDIDATE_COMPONENT_RTP, "local", "tcp",
+               kClientAddr);
+  EXPECT_EQ(4U, candidates_.size());
+}
+
+TEST_F(BasicPortAllocatorTest, TestStopGettingPorts) {
+  AddInterface(kClientAddr);
+  allocator_->set_step_delay(cricket::kDefaultStepDelay);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(2U, candidates_.size(), 1000);
+  EXPECT_EQ(2U, ports_.size());
+  session_->StopGettingPorts();
+  EXPECT_TRUE_WAIT(candidate_allocation_done_, 1000);
+
+  // After stopping getting ports, adding a new interface will not start
+  // getting ports again.
+  candidates_.clear();
+  ports_.clear();
+  candidate_allocation_done_ = false;
+  network_manager_.AddInterface(kClientAddr2);
+  rtc::Thread::Current()->ProcessMessages(1000);
+  EXPECT_EQ(0U, candidates_.size());
+  EXPECT_EQ(0U, ports_.size());
+}
+
+TEST_F(BasicPortAllocatorTest, TestClearGettingPorts) {
+  AddInterface(kClientAddr);
+  allocator_->set_step_delay(cricket::kDefaultStepDelay);
+  EXPECT_TRUE(CreateSession(cricket::ICE_CANDIDATE_COMPONENT_RTP));
+  session_->StartGettingPorts();
+  ASSERT_EQ_WAIT(2U, candidates_.size(), 1000);
+  EXPECT_EQ(2U, ports_.size());
+  session_->ClearGettingPorts();
+  WAIT(candidate_allocation_done_, 1000);
+  EXPECT_FALSE(candidate_allocation_done_);
+
+  // After clearing getting ports, adding a new interface will start getting
+  // ports again.
+  candidates_.clear();
+  ports_.clear();
+  candidate_allocation_done_ = false;
+  network_manager_.AddInterface(kClientAddr2);
+  ASSERT_EQ_WAIT(2U, candidates_.size(), 1000);
+  EXPECT_EQ(2U, ports_.size());
+}
+
+// Test that the ports and candidates are updated with new ufrag/pwd/etc. when
+// a pooled session is taken out of the pool.
+TEST_F(BasicPortAllocatorTest, TestTransportInformationUpdated) {
+  AddInterface(kClientAddr);
+  int pool_size = 1;
+  allocator_->SetConfiguration(allocator_->stun_servers(),
+                               allocator_->turn_servers(), pool_size);
+  const cricket::PortAllocatorSession* peeked_session =
+      allocator_->GetPooledSession();
+  ASSERT_NE(nullptr, peeked_session);
+  EXPECT_EQ_WAIT(true, peeked_session->CandidatesAllocationDone(),
+                 kDefaultAllocationTimeout);
+  // Expect that when TakePooledSession is called,
+  // UpdateTransportInformationInternal will be called and the
+  // BasicPortAllocatorSession will update the ufrag/pwd of ports and
+  // candidates.
+  session_ =
+      allocator_->TakePooledSession(kContentName, 1, kIceUfrag0, kIcePwd0);
+  ASSERT_NE(nullptr, session_.get());
+  auto ready_ports = session_->ReadyPorts();
+  auto candidates = session_->ReadyCandidates();
+  EXPECT_FALSE(ready_ports.empty());
+  EXPECT_FALSE(candidates.empty());
+  for (const cricket::PortInterface* port_interface : ready_ports) {
+    const cricket::Port* port =
+        static_cast<const cricket::Port*>(port_interface);
+    EXPECT_EQ(kContentName, port->content_name());
+    EXPECT_EQ(1, port->component());
+    EXPECT_EQ(kIceUfrag0, port->username_fragment());
+    EXPECT_EQ(kIcePwd0, port->password());
+  }
+  for (const cricket::Candidate& candidate : candidates) {
+    EXPECT_EQ(1, candidate.component());
+    EXPECT_EQ(kIceUfrag0, candidate.username());
+    EXPECT_EQ(kIcePwd0, candidate.password());
+  }
+}