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// Copyright (c) 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/third_party/quiche/src/quic/core/quic_idle_network_detector.h"
#include "net/third_party/quiche/src/quic/core/quic_one_block_arena.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_test_utils.h"
namespace quic {
namespace test {
class QuicIdleNetworkDetectorTestPeer {
public:
static QuicAlarm* GetAlarm(QuicIdleNetworkDetector* detector) {
return detector->alarm_.get();
}
};
namespace {
class MockDelegate : public QuicIdleNetworkDetector::Delegate {
public:
MOCK_METHOD(void, OnHandshakeTimeout, (), (override));
MOCK_METHOD(void, OnIdleNetworkDetected, (), (override));
};
class QuicIdleNetworkDetectorTest : public QuicTest {
public:
QuicIdleNetworkDetectorTest() {
clock_.AdvanceTime(QuicTime::Delta::FromSeconds(1));
detector_ = std::make_unique<QuicIdleNetworkDetector>(
&delegate_, clock_.Now(), &arena_, &alarm_factory_);
alarm_ = static_cast<MockAlarmFactory::TestAlarm*>(
QuicIdleNetworkDetectorTestPeer::GetAlarm(detector_.get()));
}
protected:
testing::StrictMock<MockDelegate> delegate_;
QuicConnectionArena arena_;
MockAlarmFactory alarm_factory_;
std::unique_ptr<QuicIdleNetworkDetector> detector_;
MockAlarmFactory::TestAlarm* alarm_;
MockClock clock_;
};
TEST_F(QuicIdleNetworkDetectorTest,
IdleNetworkDetectedBeforeHandshakeCompletes) {
EXPECT_FALSE(alarm_->IsSet());
detector_->SetTimeouts(
/*handshake_timeout=*/QuicTime::Delta::FromSeconds(30),
/*idle_network_timeout=*/QuicTime::Delta::FromSeconds(20));
EXPECT_TRUE(alarm_->IsSet());
EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromSeconds(20),
alarm_->deadline());
// No network activity for 20s.
clock_.AdvanceTime(QuicTime::Delta::FromSeconds(20));
EXPECT_CALL(delegate_, OnIdleNetworkDetected());
alarm_->Fire();
}
TEST_F(QuicIdleNetworkDetectorTest, HandshakeTimeout) {
EXPECT_FALSE(alarm_->IsSet());
detector_->SetTimeouts(
/*handshake_timeout=*/QuicTime::Delta::FromSeconds(30),
/*idle_network_timeout=*/QuicTime::Delta::FromSeconds(20));
EXPECT_TRUE(alarm_->IsSet());
// Has network activity after 15s.
clock_.AdvanceTime(QuicTime::Delta::FromSeconds(15));
detector_->OnPacketReceived(clock_.Now());
EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromSeconds(15),
alarm_->deadline());
// Handshake does not complete for another 15s.
clock_.AdvanceTime(QuicTime::Delta::FromSeconds(15));
EXPECT_CALL(delegate_, OnHandshakeTimeout());
alarm_->Fire();
}
TEST_F(QuicIdleNetworkDetectorTest,
IdleNetworkDetectedAfterHandshakeCompletes) {
EXPECT_FALSE(alarm_->IsSet());
detector_->SetTimeouts(
/*handshake_timeout=*/QuicTime::Delta::FromSeconds(30),
/*idle_network_timeout=*/QuicTime::Delta::FromSeconds(20));
EXPECT_TRUE(alarm_->IsSet());
// Handshake completes in 200ms.
clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(200));
detector_->OnPacketReceived(clock_.Now());
detector_->SetTimeouts(
/*handshake_timeout=*/QuicTime::Delta::Infinite(),
/*idle_network_timeout=*/QuicTime::Delta::FromSeconds(600));
EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromSeconds(600),
alarm_->deadline());
// No network activity for 600s.
clock_.AdvanceTime(QuicTime::Delta::FromSeconds(600));
EXPECT_CALL(delegate_, OnIdleNetworkDetected());
alarm_->Fire();
}
TEST_F(QuicIdleNetworkDetectorTest,
DoNotExtendIdleDeadlineOnConsecutiveSentPackets) {
EXPECT_FALSE(alarm_->IsSet());
detector_->SetTimeouts(
/*handshake_timeout=*/QuicTime::Delta::FromSeconds(30),
/*idle_network_timeout=*/QuicTime::Delta::FromSeconds(20));
EXPECT_TRUE(alarm_->IsSet());
// Handshake completes in 200ms.
clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(200));
detector_->OnPacketReceived(clock_.Now());
detector_->SetTimeouts(
/*handshake_timeout=*/QuicTime::Delta::Infinite(),
/*idle_network_timeout=*/QuicTime::Delta::FromSeconds(600));
EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromSeconds(600),
alarm_->deadline());
// Sent packets after 200ms.
clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(200));
detector_->OnPacketSent(clock_.Now());
const QuicTime packet_sent_time = clock_.Now();
EXPECT_EQ(packet_sent_time + QuicTime::Delta::FromSeconds(600),
alarm_->deadline());
// Sent another packet after 200ms
clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(200));
detector_->OnPacketSent(clock_.Now());
// Verify idle network deadline does not extend.
EXPECT_EQ(packet_sent_time + QuicTime::Delta::FromSeconds(600),
alarm_->deadline());
// No network activity for 600s.
clock_.AdvanceTime(QuicTime::Delta::FromSeconds(600) -
QuicTime::Delta::FromMilliseconds(200));
EXPECT_CALL(delegate_, OnIdleNetworkDetected());
alarm_->Fire();
}
} // namespace
} // namespace test
} // namespace quic
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