[wasm][testing] hosting webSocket echo server in xharness process

src/Microsoft.DotNet.XHarness.CLI/CommandArguments/TestCommandArguments.cs

@@ -2,7 +2,9 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System;
 using System.Collections.Generic;
+using System.IO;
 using Mono.Options;
 
 namespace Microsoft.DotNet.XHarness.CLI.CommandArguments
@@ -21,6 +23,9 @@ internal abstract class TestCommandArguments : AppRunCommandArguments
         /// Tests classes to be included in the run while all others are ignored.
         /// </summary>
         public IEnumerable<string> ClassMethodFilters => _classMethodFilters;
+        public IList<(string path, string type)> WebServerMiddlewarePathsAndTypes { get; set; } = new List<(string, string)>();
+        public IList<string> SetWebServerEnvironmentVariablesHttp { get; set; } = new List<string>();
+        public IList<string> SetWebServerEnvironmentVariablesHttps { get; set; } = new List<string>();
 
         protected override OptionSet GetCommandOptions()
         {
@@ -40,6 +45,27 @@ protected override OptionSet GetCommandOptions()
                     "ignored. Can be used more than once.",
                     v => _classMethodFilters.Add(v)
                 },
+                { "web-server-middleware=", "<Path>,<typeName> to assembly and type which contains Kestrel middleware for local test server. Could be used multiple times to load multiple middlewares.",
+                    v =>
+                    {
+                        var split = v.Split(',');
+                        var file = split[0];
+                        var type = split.Length > 1
+                                    ? split[1]
+                                    : "GenericHandler";
+                        if (!File.Exists(file))
+                        {
+                            throw new ArgumentException($"Failed to find the middleware assembly at {file}");
+                        }
+                        WebServerMiddlewarePathsAndTypes.Add((file,type));
+                    }
+                },
+                { "set-web-server-http-env=", "Comma separated list of environment variable names, which should be set to HTTP host and port, for the unit test, which use xharness as test web server.",
+                    v => SetWebServerEnvironmentVariablesHttp = v.Split(',')
+                },
+                { "set-web-server-https-env=", "Comma separated list of environment variable names, which should be set to HTTPS host and port, for the unit test, which use xharness as test web server.",
+                    v => SetWebServerEnvironmentVariablesHttps = v.Split(',')
+                },
             };
 
             foreach (var option in testOptions)

src/Microsoft.DotNet.XHarness.CLI/CommandArguments/WASM/WasmTestBrowserCommandArguments.cs

@@ -48,7 +48,6 @@ internal class WasmTestBrowserCommandArguments : TestCommandArguments
         public bool Incognito { get; set; } = true;
         public bool Headless { get; set; } = true;
         public bool QuitAppAtEnd { get; set; } = true;
-
         protected override OptionSet GetTestCommandOptions() => new()
         {
             { "browser=|b=", "Specifies the browser to be used. Default is Chrome",

src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/Browser/WasmBrowserTestRunner.cs

@@ -7,25 +7,20 @@
 using System.Diagnostics;
 using System.Net.WebSockets;
 using System.IO;
-using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Web;
 
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Hosting.Server.Features;
 using Microsoft.DotNet.XHarness.CLI.CommandArguments.Wasm;
 using Microsoft.DotNet.XHarness.Common.CLI;
 using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.DependencyInjection;
 
 using OpenQA.Selenium;
 using OpenQA.Selenium.Support.UI;
 
 using SeleniumLogLevel = OpenQA.Selenium.LogLevel;
-using LogLevel = Microsoft.Extensions.Logging.LogLevel;
 
 namespace Microsoft.DotNet.XHarness.CLI.Commands.Wasm
 {
@@ -62,12 +57,12 @@ public async Task<ExitCode> RunTestsWithWebDriver(DriverService driverService, I
             try
             {
                 var consolePumpTcs = new TaskCompletionSource<bool>();
-                string webServerAddr = await StartWebServer(
-                    _arguments.AppPackagePath,
+                ServerURLs serverURLs = await WebServer.Start(
+                    _arguments, _logger,
                     socket => RunConsoleMessagesPump(socket, consolePumpTcs, cts.Token),
                     cts.Token);
 
-                string testUrl = BuildUrl(webServerAddr);
+                string testUrl = BuildUrl(serverURLs);
 
                 var seleniumLogMessageTask = Task.Run(() => RunSeleniumLogMessagePump(driver, cts.Token), cts.Token);
                 cts.CancelAfter(_arguments.Timeout);
@@ -232,14 +227,29 @@ private void RunSeleniumLogMessagePump(IWebDriver driver, CancellationToken toke
             }
         }
 
-        private string BuildUrl(string webServerAddr)
+        private string BuildUrl(ServerURLs serverURLs)
         {
-            var uriBuilder = new UriBuilder($"{webServerAddr}/{_arguments.HTMLFile}");
+            var uriBuilder = new UriBuilder($"{serverURLs.Http}/{_arguments.HTMLFile}");
             var sb = new StringBuilder();
 
             if (_arguments.DebuggerPort != null)
                 sb.Append($"arg=--debug");
 
+
+            foreach (var envVariable in _arguments.SetWebServerEnvironmentVariablesHttp)
+            {
+                if (sb.Length > 0)
+                    sb.Append('&');
+                sb.Append($"arg={HttpUtility.UrlEncode($"--setenv={envVariable}={serverURLs!.Http}")}");
+            }
+
+            foreach (var envVariable in _arguments.SetWebServerEnvironmentVariablesHttps)
+            {
+                if (sb.Length > 0)
+                    sb.Append('&');
+                sb.Append($"arg={HttpUtility.UrlEncode($"--setenv={envVariable}={serverURLs!.Https}")}");
+            }
+
             foreach (var arg in _passThroughArguments)
             {
                 if (sb.Length > 0)
@@ -251,37 +261,5 @@ private string BuildUrl(string webServerAddr)
             uriBuilder.Query = sb.ToString();
             return uriBuilder.ToString();
         }
-
-        private static async Task<string> StartWebServer(string contentRoot, Func<WebSocket, Task> onConsoleConnected, CancellationToken token)
-        {
-            var host = new WebHostBuilder()
-                .UseKestrel()
-                .UseContentRoot(contentRoot)
-                .UseStartup<WasmTestWebServerStartup>()
-                .ConfigureLogging(logging =>
-                {
-                    logging.AddConsole().AddFilter(null, LogLevel.Warning);
-                })
-                .ConfigureServices((ctx, services) =>
-                {
-                    services.AddRouting();
-                    services.Configure<WasmTestWebServerOptions>(ctx.Configuration);
-                    services.Configure<WasmTestWebServerOptions>(options =>
-                    {
-                        options.OnConsoleConnected = onConsoleConnected;
-                    });
-                })
-                .UseUrls("http://127.0.0.1:0")
-                .Build();
-
-            await host.StartAsync(token);
-
-            var ipAddress = host.ServerFeatures
-                .Get<IServerAddressesFeature>()?
-                .Addresses
-                .FirstOrDefault();
-
-            return ipAddress ?? throw new InvalidOperationException("Failed to determine web server's IP address");
-        }
     }
 }

src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/Browser/WasmTestBrowserCommand.cs

@@ -175,6 +175,7 @@ protected override async Task<ExitCode> InvokeInternal(ILogger logger)
             {
                 // added based on https://github.com/puppeteer/puppeteer/blob/main/src/node/Launcher.ts#L159-L181
                 "--enable-features=NetworkService,NetworkServiceInProcess",
+                "--allow-insecure-localhost",
                 "--disable-background-timer-throttling",
                 "--disable-backgrounding-occluded-windows",
                 "--disable-breakpad",

src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/JS/WasmTestCommand.cs

@@ -15,6 +15,7 @@
 using Microsoft.DotNet.XHarness.Common.Execution;
 using Microsoft.DotNet.XHarness.Common.Logging;
 using Microsoft.Extensions.Logging;
+using System.Threading;
 
 namespace Microsoft.DotNet.XHarness.CLI.Commands.Wasm
 {
@@ -34,7 +35,7 @@ public WasmTestCommand() : base("test", true, CommandHelp)
 
         private static string FindEngineInPath(string engineBinary)
         {
-            if (File.Exists (engineBinary) || Path.IsPathRooted(engineBinary))
+            if (File.Exists(engineBinary) || Path.IsPathRooted(engineBinary))
                 return engineBinary;
 
             var path = Environment.GetEnvironmentVariable("PATH");
@@ -67,33 +68,55 @@ protected override async Task<ExitCode> InvokeInternal(ILogger logger)
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
                 engineBinary = FindEngineInPath(engineBinary + ".cmd");
 
-            var engineArgs = new List<string>();
-
-            if (_arguments.Engine == JavaScriptEngine.V8)
+            var cts = new CancellationTokenSource();
+            try
             {
-                // v8 needs this flag to enable WASM support
-                engineArgs.Add("--expose_wasm");
-            }
+                ServerURLs? serverURLs = null;
+                if (_arguments.WebServerMiddlewarePathsAndTypes.Count > 0 || _arguments.SetWebServerEnvironmentVariablesHttp.Count > 0 || _arguments.SetWebServerEnvironmentVariablesHttps.Count > 0)
+                {
+                    serverURLs = await WebServer.Start(
+                        _arguments, logger,
+                        null,
+                        cts.Token);
+                }
 
-            engineArgs.AddRange(_arguments.EngineArgs);
-            engineArgs.Add(_arguments.JSFile);
+                cts.CancelAfter(_arguments.Timeout);
 
-            if (_arguments.Engine == JavaScriptEngine.V8 || _arguments.Engine == JavaScriptEngine.JavaScriptCore)
-            {
-                // v8/jsc want arguments to the script separated by "--", others don't
-                engineArgs.Add("--");
-            }
+                var engineArgs = new List<string>();
 
-            engineArgs.AddRange(PassThroughArguments);
+                if (_arguments.Engine == JavaScriptEngine.V8)
+                {
+                    // v8 needs this flag to enable WASM support
+                    engineArgs.Add("--expose_wasm");
+                }
 
-            var xmlResultsFilePath = Path.Combine(_arguments.OutputDirectory, "testResults.xml");
-            File.Delete(xmlResultsFilePath);
+                engineArgs.AddRange(_arguments.EngineArgs);
+                engineArgs.Add(_arguments.JSFile);
 
-            var stdoutFilePath = Path.Combine(_arguments.OutputDirectory, "wasm-console.log");
-            File.Delete(stdoutFilePath);
+                if (_arguments.Engine == JavaScriptEngine.V8 || _arguments.Engine == JavaScriptEngine.JavaScriptCore)
+                {
+                    // v8/jsc want arguments to the script separated by "--", others don't
+                    engineArgs.Add("--");
+                }
+
+                foreach (var envVariable in _arguments.SetWebServerEnvironmentVariablesHttp)
+                {
+                    engineArgs.Add($"--setenv={envVariable}={serverURLs!.Http}");
+                }
+
+                foreach (var envVariable in _arguments.SetWebServerEnvironmentVariablesHttps)
+                {
+                    engineArgs.Add($"--setenv={envVariable}={serverURLs!.Https}");
+                }
+
+                engineArgs.AddRange(PassThroughArguments);
+
+                var xmlResultsFilePath = Path.Combine(_arguments.OutputDirectory, "testResults.xml");
+                File.Delete(xmlResultsFilePath);
+
+                var stdoutFilePath = Path.Combine(_arguments.OutputDirectory, "wasm-console.log");
+                File.Delete(stdoutFilePath);
 
-            try
-            {
                 var logProcessor = new WasmTestMessagesProcessor(xmlResultsFilePath, stdoutFilePath, logger);
                 var result = await processManager.ExecuteCommandAsync(
                     engineBinary,
@@ -102,11 +125,16 @@ protected override async Task<ExitCode> InvokeInternal(ILogger logger)
                     stdoutLog: new CallbackLog(logProcessor.Invoke),
                     stderrLog: new CallbackLog(m => logger.LogError(m)),
                     _arguments.Timeout);
+
+                if (cts.IsCancellationRequested)
+                {
+                    return ExitCode.TIMED_OUT;
+                }
+
                 if (result.ExitCode != _arguments.ExpectedExitCode)
                 {
                     logger.LogError($"Application has finished with exit code {result.ExitCode} but {_arguments.ExpectedExitCode} was expected");
-                        return ExitCode.GENERAL_FAILURE;
-
+                    return ExitCode.GENERAL_FAILURE;
                 }
                 else
                 {
@@ -119,6 +147,13 @@ protected override async Task<ExitCode> InvokeInternal(ILogger logger)
                 logger.LogCritical($"The engine binary `{engineBinary}` was not found");
                 return ExitCode.APP_LAUNCH_FAILURE;
             }
+            finally
+            {
+                if (!cts.IsCancellationRequested)
+                {
+                    cts.Cancel();
+                }
+            }
         }
     }
 }