zqz/platform-external-webrtc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add unittest for congestion window pushback in goog_cc.

Browse Source 
Bug: none
Change-Id: Idc4ed71d8e12335eeaccbf1181eff36657f122d0
Reviewed-on: https://webrtc-review.googlesource.com/c/116320
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Ying Wang <yinwa@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26222}
This commit is contained in:
Ying Wang
2019-01-11 13:32:44 +01:00
committed by Commit Bot
parent 1f7a008261
commit aaa99a93e2
1 changed files with 36 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
modules/congestion_controller/goog_cc/goog_cc_network_control_unittest.cc
View File

@ -210,6 +210,42 @@ TEST_F(GoogCcNetworkControllerTest, ReactsToChangedNetworkConditions) {
kInitialBitrate * kDefaultPacingRate);
}
// Test congestion window pushback on network delay happens.
TEST_F(GoogCcNetworkControllerTest, CongestionWindowPushbackOnNetworkDelay) {
ScopedFieldTrials trial(
"WebRTC-CongestionWindowPushback/Enabled/WebRTC-CwndExperiment/"
"Enabled-800/");
Scenario s("googcc_unit/cwnd_on_delay", false);
auto send_net = s.CreateSimulationNode([=](NetworkNodeConfig* c) {
c->simulation.bandwidth = DataRate::kbps(1000);
c->simulation.delay = TimeDelta::ms(100);
c->update_frequency = TimeDelta::ms(5);
});
auto ret_net = s.CreateSimulationNode([](NetworkNodeConfig* c) {
c->simulation.delay = TimeDelta::ms(100);
c->update_frequency = TimeDelta::ms(5);
});
SimulatedTimeClientConfig config;
config.transport.cc =
TransportControllerConfig::CongestionController::kGoogCcFeedback;
// Start high so bandwidth drop has max effect.
config.transport.rates.start_rate = DataRate::kbps(300);
config.transport.rates.max_rate = DataRate::kbps(2000);
config.transport.rates.min_rate = DataRate::kbps(10);
SimulatedTimeClient* client = s.CreateSimulatedTimeClient(
"send", config, {PacketStreamConfig()}, {send_net}, {ret_net});
s.RunFor(TimeDelta::seconds(10));
send_net->PauseTransmissionUntil(s.Now() + TimeDelta::seconds(10));
s.RunFor(TimeDelta::seconds(3));
// After 3 seconds without feedback from any sent packets, we expect that the
// target rate is reduced to the minimum pushback threshold
// kDefaultMinPushbackTargetBitrateBps, which is defined as 30 kbps in
// congestion_window_pushback_controller.
EXPECT_LT(client->target_rate_kbps(), 40);
}
TEST_F(GoogCcNetworkControllerTest, OnNetworkRouteChanged) {
NetworkControlUpdate update;
DataRate new_bitrate = DataRate::bps(200000);