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Adds TCP fairness test to GoogCC.

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Bug: webrtc:9883
Change-Id: Ie78e51edb08f6c22dbf02168b1d3b067b2c0c55e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/140293
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28193}
This commit is contained in:
Sebastian Jansson
2019-06-07 13:06:00 +02:00
committed by Commit Bot
parent 26b5e35276
commit b13ccc5288
8 changed files with 251 additions and 75 deletions
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24
modules/congestion_controller/goog_cc/goog_cc_network_control_unittest.cc
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@ -685,5 +685,29 @@ TEST_F(GoogCcNetworkControllerTest, NoRttBackoffCollapseWhenVideoStops) {
EXPECT_GT(client->send_bandwidth().kbps(), 1000);
}
TEST_F(GoogCcNetworkControllerTest, IsFairToTCP) {
Scenario s("googcc_unit/tcp_fairness");
NetworkSimulationConfig net_conf;
net_conf.bandwidth = DataRate::kbps(1000);
net_conf.delay = TimeDelta::ms(50);
auto* client = s.CreateClient("send", [&](CallClientConfig* c) {
c->transport.rates.start_rate = DataRate::kbps(1000);
});
auto send_net = {s.CreateSimulationNode(net_conf)};
auto ret_net = {s.CreateSimulationNode(net_conf)};
auto* route = s.CreateRoutes(
client, send_net, s.CreateClient("return", CallClientConfig()), ret_net);
s.CreateVideoStream(route->forward(), VideoStreamConfig());
s.net()->StartFakeTcpCrossTraffic(s.net()->CreateRoute(send_net),
s.net()->CreateRoute(ret_net),
FakeTcpConfig());
s.RunFor(TimeDelta::seconds(10));
// Currently only testing for the upper limit as we in practice back out
// quite a lot in this scenario. If this behavior is fixed, we should add a
// lower bound to ensure it stays fixed.
EXPECT_LT(client->send_bandwidth().kbps(), 750);
}
} // namespace test
} // namespace webrtc