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/*
* Copyright 2018 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/regathering_controller.h"
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "api/scoped_refptr.h"
#include "p2p/base/fake_port_allocator.h"
#include "p2p/base/mock_ice_transport.h"
#include "p2p/base/p2p_constants.h"
#include "p2p/base/port.h"
#include "p2p/base/stun_server.h"
#include "rtc_base/gunit.h"
#include "rtc_base/socket_address.h"
#include "rtc_base/thread.h"
#include "rtc_base/virtual_socket_server.h"
#include "test/scoped_key_value_config.h"
namespace {
const int kOnlyLocalPorts = cricket::PORTALLOCATOR_DISABLE_STUN |
cricket::PORTALLOCATOR_DISABLE_RELAY |
cricket::PORTALLOCATOR_DISABLE_TCP;
// The address of the public STUN server.
const rtc::SocketAddress kStunAddr("99.99.99.1", cricket::STUN_SERVER_PORT);
// The addresses for the public TURN server.
const rtc::SocketAddress kTurnUdpIntAddr("99.99.99.3",
cricket::STUN_SERVER_PORT);
const cricket::RelayCredentials kRelayCredentials("test", "test");
const char kIceUfrag[] = "UF00";
const char kIcePwd[] = "TESTICEPWD00000000000000";
} // namespace
namespace webrtc {
class RegatheringControllerTest : public ::testing::Test,
public sigslot::has_slots<> {
public:
RegatheringControllerTest()
: vss_(std::make_unique<rtc::VirtualSocketServer>()),
thread_(vss_.get()),
ice_transport_(std::make_unique<cricket::MockIceTransport>()),
packet_socket_factory_(
std::make_unique<rtc::BasicPacketSocketFactory>(vss_.get())),
allocator_(std::make_unique<cricket::FakePortAllocator>(
rtc::Thread::Current(),
packet_socket_factory_.get(),
&field_trials_)) {
BasicRegatheringController::Config regathering_config;
regathering_config.regather_on_failed_networks_interval = 0;
regathering_controller_.reset(new BasicRegatheringController(
regathering_config, ice_transport_.get(), rtc::Thread::Current()));
}
// Initializes the allocator and gathers candidates once by StartGettingPorts.
void InitializeAndGatherOnce() {
cricket::ServerAddresses stun_servers;
stun_servers.insert(kStunAddr);
cricket::RelayServerConfig turn_server;
turn_server.credentials = kRelayCredentials;
turn_server.ports.push_back(
cricket::ProtocolAddress(kTurnUdpIntAddr, cricket::PROTO_UDP));
std::vector<cricket::RelayServerConfig> turn_servers(1, turn_server);
allocator_->set_flags(kOnlyLocalPorts);
allocator_->SetConfiguration(stun_servers, turn_servers, 0 /* pool size */,
webrtc::NO_PRUNE);
allocator_session_ = allocator_->CreateSession(
"test", cricket::ICE_CANDIDATE_COMPONENT_RTP, kIceUfrag, kIcePwd);
// The gathering will take place on the current thread and the following
// call of StartGettingPorts is blocking. We will not ClearGettingPorts
// prematurely.
allocator_session_->StartGettingPorts();
allocator_session_->SignalIceRegathering.connect(
this, &RegatheringControllerTest::OnIceRegathering);
regathering_controller_->set_allocator_session(allocator_session_.get());
}
// The regathering controller is initialized with the allocator session
// cleared. Only after clearing the session, we would be able to regather. See
// the comments for BasicRegatheringController in regatheringcontroller.h.
void InitializeAndGatherOnceWithSessionCleared() {
InitializeAndGatherOnce();
allocator_session_->ClearGettingPorts();
}
void OnIceRegathering(cricket::PortAllocatorSession* allocator_session,
cricket::IceRegatheringReason reason) {
++count_[reason];
}
int GetRegatheringReasonCount(cricket::IceRegatheringReason reason) {
return count_[reason];
}
BasicRegatheringController* regathering_controller() {
return regathering_controller_.get();
}
private:
webrtc::test::ScopedKeyValueConfig field_trials_;
std::unique_ptr<rtc::VirtualSocketServer> vss_;
rtc::AutoSocketServerThread thread_;
std::unique_ptr<cricket::IceTransportInternal> ice_transport_;
std::unique_ptr<BasicRegatheringController> regathering_controller_;
std::unique_ptr<rtc::PacketSocketFactory> packet_socket_factory_;
std::unique_ptr<cricket::PortAllocator> allocator_;
std::unique_ptr<cricket::PortAllocatorSession> allocator_session_;
std::map<cricket::IceRegatheringReason, int> count_;
};
// Tests that ICE regathering occurs only if the port allocator session is
// cleared. A port allocation session is not cleared if the initial gathering is
// still in progress or the continual gathering is not enabled.
TEST_F(RegatheringControllerTest,
IceRegatheringDoesNotOccurIfSessionNotCleared) {
rtc::ScopedFakeClock clock;
InitializeAndGatherOnce(); // Session not cleared.
BasicRegatheringController::Config config;
config.regather_on_failed_networks_interval = 2000;
regathering_controller()->SetConfig(config);
regathering_controller()->Start();
SIMULATED_WAIT(false, 10000, clock);
// Expect no regathering in the last 10s.
EXPECT_EQ(0, GetRegatheringReasonCount(
cricket::IceRegatheringReason::NETWORK_FAILURE));
}
TEST_F(RegatheringControllerTest, IceRegatheringRepeatsAsScheduled) {
rtc::ScopedFakeClock clock;
InitializeAndGatherOnceWithSessionCleared();
BasicRegatheringController::Config config;
config.regather_on_failed_networks_interval = 2000;
regathering_controller()->SetConfig(config);
regathering_controller()->Start();
SIMULATED_WAIT(false, 2000 - 1, clock);
// Expect no regathering.
EXPECT_EQ(0, GetRegatheringReasonCount(
cricket::IceRegatheringReason::NETWORK_FAILURE));
SIMULATED_WAIT(false, 2, clock);
// Expect regathering on all networks and on failed networks to happen once
// respectively in that last 2s with 2s interval.
EXPECT_EQ(1, GetRegatheringReasonCount(
cricket::IceRegatheringReason::NETWORK_FAILURE));
SIMULATED_WAIT(false, 11000, clock);
// Expect regathering to happen for another 5 times in 11s with 2s interval.
EXPECT_EQ(6, GetRegatheringReasonCount(
cricket::IceRegatheringReason::NETWORK_FAILURE));
}
// Tests that the schedule of ICE regathering on failed networks can be canceled
// and replaced by a new recurring schedule.
TEST_F(RegatheringControllerTest,
ScheduleOfIceRegatheringOnFailedNetworksCanBeReplaced) {
rtc::ScopedFakeClock clock;
InitializeAndGatherOnceWithSessionCleared();
BasicRegatheringController::Config config;
config.regather_on_failed_networks_interval = 2000;
regathering_controller()->SetConfig(config);
regathering_controller()->Start();
config.regather_on_failed_networks_interval = 5000;
regathering_controller()->SetConfig(config);
SIMULATED_WAIT(false, 3000, clock);
// Expect no regathering from the previous schedule.
EXPECT_EQ(0, GetRegatheringReasonCount(
cricket::IceRegatheringReason::NETWORK_FAILURE));
SIMULATED_WAIT(false, 11000 - 3000, clock);
// Expect regathering to happen twice in the last 11s with 5s interval.
EXPECT_EQ(2, GetRegatheringReasonCount(
cricket::IceRegatheringReason::NETWORK_FAILURE));
}
} // namespace webrtc
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