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[wasm] spread WS based timers over next 6 minutes to prevent heavy th…
…rottling (dotnet#57745) spread WS based timers over next 6 minutes to prevent heavy throttling
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181 changes: 181 additions & 0 deletions
181
src/libraries/System.Net.WebSockets.Client/tests/wasm/BrowserTimerThrottlingTest.cs
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| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
|
||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Net.WebSockets.Client.Tests; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
| using System.Threading; | ||
| using System.Threading.Tasks; | ||
|
|
||
| using Xunit; | ||
| using Xunit.Abstractions; | ||
| using Xunit.Sdk; | ||
|
|
||
| namespace System.Net.WebSockets.Client.Wasm.Tests | ||
| { | ||
| // https://developer.chrome.com/blog/timer-throttling-in-chrome-88/ | ||
| // https://docs.google.com/document/d/11FhKHRcABGS4SWPFGwoL6g0ALMqrFKapCk5ZTKKupEk/view | ||
| // requires chromium based browser | ||
| // requires minimized browser or browser tab out of focus, browser can't be headless | ||
| // requires --enable-features=IntensiveWakeUpThrottling:grace_period_seconds/1 chromeDriver flags | ||
| // doesn't work with --disable-background-timer-throttling | ||
| [TestCaseOrderer("System.Net.WebSockets.Client.Wasm.Tests.AlphabeticalOrderer", "System.Net.WebSockets.Client.Wasm.Tests")] | ||
| public class BrowserTimerThrottlingTest : ClientWebSocketTestBase | ||
| { | ||
| public static bool IsBrowser => RuntimeInformation.IsOSPlatform(OSPlatform.Create("BROWSER")); | ||
| const double moreThanLightThrottlingThreshold = 1900; | ||
| const double detectLightThrottlingThreshold = 900; | ||
| const double webSocketMessageFrequency = 45000; | ||
| const double fastTimeoutFrequency = 100; | ||
|
|
||
| public BrowserTimerThrottlingTest(ITestOutputHelper output) : base(output) { } | ||
|
|
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| [ConditionalFact(nameof(PlatformDetection.IsBrowser))] | ||
| [OuterLoop] // involves long delay | ||
| // this test is influenced by usage of WS on the same browser tab in previous unit tests. we may need to wait long time for it to fizzle down | ||
| public async Task DotnetTimersAreHeavilyThrottledWithoutWebSocket() | ||
| { | ||
| double maxDelayMs = 0; | ||
| double maxLightDelayMs = 0; | ||
| DateTime start = DateTime.Now; | ||
| CancellationTokenSource cts = new CancellationTokenSource(); | ||
|
|
||
| using (var timer = new Timers.Timer(fastTimeoutFrequency)) | ||
| { | ||
| DateTime last = DateTime.Now; | ||
| timer.AutoReset = true; | ||
| timer.Enabled = true; | ||
| timer.Elapsed += (object? source, Timers.ElapsedEventArgs? e) => | ||
| { | ||
| var ms = (e.SignalTime - last).TotalMilliseconds; | ||
| if (maxDelayMs < ms) | ||
| { | ||
| maxDelayMs = ms; | ||
| } | ||
| if (ms > moreThanLightThrottlingThreshold) | ||
| { | ||
| #if DEBUG | ||
| Console.WriteLine("Too slow tick " + ms); | ||
| #endif | ||
| // stop, we are throttled heavily, this is what we are looking for | ||
| cts.Cancel(); | ||
| } | ||
| else if (ms > detectLightThrottlingThreshold) | ||
| { | ||
| maxLightDelayMs = ms; | ||
| // we are lightly throttled | ||
| #if DEBUG | ||
| Console.WriteLine("Slow tick NO-WS " + ms); | ||
| #endif | ||
| } | ||
| last = e.SignalTime; | ||
| }; | ||
|
|
||
| // test it for 10 minutes | ||
| try { await Task.Delay(10 * 60 * 1000, cts.Token); } catch (Exception) { } | ||
| timer.Close(); | ||
| } | ||
| Assert.True(maxDelayMs > detectLightThrottlingThreshold, "Expect that it throttled lightly " + maxDelayMs); | ||
| Assert.True(maxDelayMs > moreThanLightThrottlingThreshold, "Expect that it was heavily throttled " + maxDelayMs); | ||
| } | ||
|
|
||
| [ConditionalFact(nameof(WebSocketsSupported), nameof(PlatformDetection.IsBrowser))] | ||
| [OuterLoop] // involves long delay | ||
| public async Task WebSocketKeepsDotnetTimersOnlyLightlyThrottled() | ||
| { | ||
| double maxDelayMs = 0; | ||
| double maxLightDelayMs = 0; | ||
| DateTime start = DateTime.Now; | ||
| CancellationTokenSource cts = new CancellationTokenSource(); | ||
|
|
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| using (ClientWebSocket cws = await WebSocketHelper.GetConnectedWebSocket(Test.Common.Configuration.WebSockets.RemoteEchoServer, TimeOutMilliseconds, _output)) | ||
| { | ||
| await SendAndReceive(cws, "test"); | ||
| using (var timer = new Timers.Timer(fastTimeoutFrequency)) | ||
| { | ||
| DateTime last = DateTime.Now; | ||
| DateTime lastSent = DateTime.MinValue; | ||
| timer.AutoReset = true; | ||
| timer.Enabled = true; | ||
| timer.Elapsed += async (object? source, Timers.ElapsedEventArgs? e) => | ||
| { | ||
| var ms = (e.SignalTime - last).TotalMilliseconds; | ||
| var msSent = (e.SignalTime - lastSent).TotalMilliseconds; | ||
| if (maxDelayMs < ms) | ||
| { | ||
| maxDelayMs = ms; | ||
| } | ||
| if (ms > moreThanLightThrottlingThreshold) | ||
| { | ||
| // fail fast, we are throttled heavily | ||
| #if DEBUG | ||
| Console.WriteLine("Too slow tick " + ms); | ||
| #endif | ||
| cts.Cancel(); | ||
| } | ||
| else if (ms > detectLightThrottlingThreshold) | ||
| { | ||
| maxLightDelayMs = ms; | ||
| // we are lightly throttled | ||
| #if DEBUG | ||
| Console.WriteLine("Slow tick WS " + ms); | ||
| #endif | ||
| } | ||
| if (msSent > webSocketMessageFrequency) | ||
| { | ||
| await SendAndReceive(cws, "test"); | ||
| lastSent = DateTime.Now; | ||
| } | ||
| last = e.SignalTime; | ||
| }; | ||
|
|
||
| // test it for 10 minutes | ||
| try { await Task.Delay(10 * 60 * 1000, cts.Token); } catch (Exception) { } | ||
| timer.Close(); | ||
| } | ||
| await cws.CloseAsync(WebSocketCloseStatus.NormalClosure, "WebSocketKeepsDotnetTimersOnlyLightlyThrottled", CancellationToken.None); | ||
| } | ||
| Assert.True(maxDelayMs > detectLightThrottlingThreshold, "Expect that it throttled lightly " + maxDelayMs); | ||
| Assert.True(maxDelayMs < moreThanLightThrottlingThreshold, "Expect that it wasn't heavily throttled " + maxDelayMs); | ||
| } | ||
|
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||
| private async static Task SendAndReceive(ClientWebSocket cws, string message) | ||
| { | ||
| try | ||
| { | ||
| byte[] buffer = Encoding.UTF8.GetBytes(message); | ||
| await cws.SendAsync(new ArraySegment<byte>(buffer), WebSocketMessageType.Text, true, CancellationToken.None); | ||
|
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||
| var receiveBuffer = new byte[100]; | ||
| var receiveSegment = new ArraySegment<byte>(receiveBuffer); | ||
| WebSocketReceiveResult recvRet = await cws.ReceiveAsync(receiveSegment, CancellationToken.None); | ||
| #if DEBUG | ||
| Console.WriteLine("SendAndReceive"); | ||
| #endif | ||
| } | ||
| catch (OperationCanceledException) | ||
| { | ||
| } | ||
| catch (Exception ex) | ||
| { | ||
| #if DEBUG | ||
| Console.WriteLine("SendAndReceive fail:" + ex); | ||
| #endif | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // this is just for convinience, as the second test has side-effect to running page, the first test would take longer if they are in another order | ||
| public class AlphabeticalOrderer : ITestCaseOrderer | ||
| { | ||
| public IEnumerable<TTestCase> OrderTestCases<TTestCase>(IEnumerable<TTestCase> testCases) | ||
| where TTestCase : ITestCase | ||
| { | ||
| List<TTestCase> result = testCases.ToList(); | ||
| result.Sort((x, y) => StringComparer.Ordinal.Compare(x.TestMethod.Method.Name, y.TestMethod.Method.Name)); | ||
| return result; | ||
| } | ||
| } | ||
| } |
66 changes: 66 additions & 0 deletions
66
...es/System.Net.WebSockets.Client/tests/wasm/System.Net.WebSockets.Client.Wasm.Tests.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
| <PropertyGroup> | ||
| <StringResourcesPath>../../src/Resources/Strings.resx</StringResourcesPath> | ||
| <TargetFrameworks>$(NetCoreAppCurrent)-Browser</TargetFrameworks> | ||
| <DefineConstants>$(DefineConstants);NETSTANDARD</DefineConstants> | ||
| </PropertyGroup> | ||
|
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| <PropertyGroup Condition="'$(TargetOS)' == 'Browser'"> | ||
| <WasmXHarnessArgs>--background-throttling</WasmXHarnessArgs> | ||
| <Scenario>WasmTestOnBrowser</Scenario> | ||
| <TestArchiveTestsRoot>$(TestArchiveRoot)browseronly/</TestArchiveTestsRoot> | ||
| <TestArchiveTestsDir>$(TestArchiveTestsRoot)$(OSPlatformConfig)/</TestArchiveTestsDir> | ||
| <DefineConstants>$(DefineConstants);TARGET_BROWSER</DefineConstants> | ||
| </PropertyGroup> | ||
|
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| <Import Condition="'$(TargetOS)' == 'Browser'" Project="$(CommonTestPath)System/Net/Prerequisites/LocalEchoServer.props" /> | ||
|
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| <!-- Browser specific files --> | ||
| <ItemGroup Condition="'$(TargetOS)' == 'Browser'"> | ||
| <ProjectReference Include="$(CommonTestPath)System/Net/Prerequisites/NetCoreServer/NetCoreServer.csproj" ReferenceOutputAssembly="false"/> | ||
| <ProjectReference Include="$(CommonTestPath)System/Net/Prerequisites/RemoteLoopServer/RemoteLoopServer.csproj" ReferenceOutputAssembly="false"/> | ||
| <Compile Include="$(CommonTestPath)System\Net\WebSockets\WebSocketStream.cs" | ||
| Link="Common\System\Net\WebSockets\WebSocketStream.cs" /> | ||
| </ItemGroup> | ||
|
|
||
| <!-- Do not reference these assemblies from the TargetingPack since we are building part of the source code for tests. --> | ||
| <ItemGroup> | ||
| <DefaultReferenceExclusion Include="System.Configuration" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <Compile Include="$(CommonTestPath)System\Net\Capability.Security.cs" | ||
| Link="Common\System\Net\Capability.Security.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Configuration.cs" | ||
| Link="Common\System\Net\Configuration.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Configuration.Certificates.cs" | ||
| Link="Common\System\Net\Configuration.Certificates.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Configuration.Http.cs" | ||
| Link="Common\System\Net\Configuration.Http.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Configuration.Security.cs" | ||
| Link="Common\System\Net\Configuration.Security.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Configuration.WebSockets.cs" | ||
| Link="Common\System\Net\Configuration.WebSockets.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\EventSourceTestLogging.cs" | ||
| Link="Common\System\Net\EventSourceTestLogging.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Http\LoopbackProxyServer.cs" | ||
| Link="Common\System\Net\Http\LoopbackProxyServer.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Http\LoopbackServer.cs" | ||
| Link="Common\System\Net\Http\LoopbackServer.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Net\Http\GenericLoopbackServer.cs" | ||
| Link="Common\System\Net\Http\GenericLoopbackServer.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Security\Cryptography\PlatformSupport.cs" | ||
| Link="CommonTest\System\Security\Cryptography\PlatformSupport.cs" /> | ||
| <Compile Include="$(CommonTestPath)System\Threading\Tasks\TaskTimeoutExtensions.cs" | ||
| Link="Common\System\Threading\Tasks\TaskTimeoutExtensions.cs" /> | ||
| <Compile Include="..\ClientWebSocketTestBase.cs" /> | ||
| <Compile Include="..\WebSocketHelper.cs" /> | ||
| <Compile Include="..\LoopbackHelper.cs" /> | ||
| <Compile Include="..\ResourceHelper.cs" /> | ||
| <Compile Include="..\WebSocketData.cs" /> | ||
| <Compile Include="BrowserTimerThrottlingTest.cs" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <PackageReference Include="System.Net.TestData" Version="$(SystemNetTestDataVersion)" /> | ||
| </ItemGroup> | ||
|
|
||
| </Project> |
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25
...aries/System.Net.WebSockets.Client/tests/wasm/System.Net.WebSockets.Client.Wasm.Tests.sln
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|
|
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| Microsoft Visual Studio Solution File, Format Version 12.00 | ||
| # Visual Studio Version 17 | ||
| VisualStudioVersion = 17.0.31521.260 | ||
| MinimumVisualStudioVersion = 10.0.40219.1 | ||
| Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.WebSockets.Client.Wasm.Tests", "System.Net.WebSockets.Client.Wasm.Tests.csproj", "{DA6DF153-169E-485D-90A4-EDBDA54B32A6}" | ||
| EndProject | ||
| Global | ||
| GlobalSection(SolutionConfigurationPlatforms) = preSolution | ||
| Debug|Any CPU = Debug|Any CPU | ||
| Release|Any CPU = Release|Any CPU | ||
| EndGlobalSection | ||
| GlobalSection(ProjectConfigurationPlatforms) = postSolution | ||
| {DA6DF153-169E-485D-90A4-EDBDA54B32A6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU | ||
| {DA6DF153-169E-485D-90A4-EDBDA54B32A6}.Debug|Any CPU.Build.0 = Debug|Any CPU | ||
| {DA6DF153-169E-485D-90A4-EDBDA54B32A6}.Release|Any CPU.ActiveCfg = Release|Any CPU | ||
| {DA6DF153-169E-485D-90A4-EDBDA54B32A6}.Release|Any CPU.Build.0 = Release|Any CPU | ||
| EndGlobalSection | ||
| GlobalSection(SolutionProperties) = preSolution | ||
| HideSolutionNode = FALSE | ||
| EndGlobalSection | ||
| GlobalSection(ExtensibilityGlobals) = postSolution | ||
| SolutionGuid = {627DB5DF-DE31-44B4-B5FD-E5666467145E} | ||
| EndGlobalSection | ||
| EndGlobal |
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