PragmaticFlow · OleksPal · Mar 11, 2026
diff --git a/NBomber.WebBrowser.sln b/NBomber.WebBrowser.sln
@@ -1,11 +1,16 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36930.0 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NBomber.WebBrowser", "src\NBomber.WebBrowser\NBomber.WebBrowser.csproj", "{73B37EAF-90E5-465F-97DB-874FD956A82C}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Demo", "examples\Demo\Demo.csproj", "{A652A3E0-6518-495A-825C-32C3718C8647}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "examples", "examples", "{EE2BE11B-2872-4E3A-8B7F-FEED1174D5EE}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HttpSimulator", "examples\HttpSimulator\HttpSimulator.csproj", "{B3DCE2C8-0011-42DB-8DD0-B5FA9E4A3034}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -20,8 +25,19 @@ Global
 		{A652A3E0-6518-495A-825C-32C3718C8647}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A652A3E0-6518-495A-825C-32C3718C8647}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A652A3E0-6518-495A-825C-32C3718C8647}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B3DCE2C8-0011-42DB-8DD0-B5FA9E4A3034}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B3DCE2C8-0011-42DB-8DD0-B5FA9E4A3034}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B3DCE2C8-0011-42DB-8DD0-B5FA9E4A3034}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B3DCE2C8-0011-42DB-8DD0-B5FA9E4A3034}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{A652A3E0-6518-495A-825C-32C3718C8647} = {EE2BE11B-2872-4E3A-8B7F-FEED1174D5EE}
+		{B3DCE2C8-0011-42DB-8DD0-B5FA9E4A3034} = {EE2BE11B-2872-4E3A-8B7F-FEED1174D5EE}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {56B32A8A-8F09-4654-9750-60CE054B88D3}
 	EndGlobalSection
 EndGlobal
diff --git a/examples/Demo/Playwright/PlaywrightExample.cs b/examples/Demo/Playwright/PlaywrightExample.cs
@@ -4,62 +4,46 @@
 
 namespace Demo.Playwright;
 
-using Microsoft.Playwright;
-
 public class PlaywrightExample
 {
     public static async Task Run()
     {
-        // downloading the Chrome
         var installedBrowser = await new BrowserFetcher(SupportedBrowser.Chrome).DownloadAsync(BrowserTag.Stable);
         var browserPath = installedBrowser.GetExecutablePath();
-
-        using var playwright = await Playwright.CreateAsync();
-
-        await using var browser = await playwright.Chromium.LaunchAsync(
-            new BrowserTypeLaunchOptions
-            {
-                Headless = true,
-                ExecutablePath = browserPath
-            }
-        );
+
+        await using var playwrightBrowserPool = new PlaywrightBrowserPool();
+
+        // Set the target number of concurrent virtual users
+        var targetVirtualUsers = 3;
 
         var scenario = Scenario.Create("playwright_scenario", async context =>
         {
-            var page = await browser.NewPageAsync();
-
-            await Step.Run("open nbomber", context, async () =>
-            {
-                var pageResponse = await page.GotoAsync("https://nbomber.com/");
-
-                var html = await page.ContentAsync();
-                var totalSize = await page.GetDataTransferSize();
-
-                return Response.Ok(sizeBytes: totalSize);
-            });
+            // Get a browser context from the pool
+            // This ensures each virtual user has its own isolated context
+            var browserContext = playwrightBrowserPool.GetBrowserContext(context.ScenarioInfo.InstanceNumber);
+            var page = await browserContext.NewPageAsync();
 
-            await Step.Run("open bing", context, async () =>
+            try
             {
-                var pageResponse = await page.GotoAsync("https://www.bing.com/maps");
-
-                await page.WaitForSelectorAsync(".searchbox input");
-                await page.FocusAsync(".searchbox input");
-                await page.Keyboard.TypeAsync("CN Tower, Toronto, Ontario, Canada");
-
-                await page.Keyboard.PressAsync("Enter");
-                await page.WaitForLoadStateAsync(LoadState.Load);
-
-                var totalSize = await page.GetDataTransferSize();
-                return Response.Ok(sizeBytes: totalSize);
-            });
+                await Step.Run("open local website", context, async () =>
+                {
+                    await page.GotoAsync("http://localhost:5280");
+                    return Response.Ok();
+                });
 
-            await page.CloseAsync();
-
-            return Response.Ok();
+                return Response.Ok();
+            }
+            finally
+            {
+                // Ensure page is closed even if there's an exception
+                // The browser context remains alive and will be reused
+                await page.CloseAsync();
+            }
         })
-        .WithWarmUpDuration(TimeSpan.FromSeconds(3))
+        .WithInit(async context => await playwrightBrowserPool.Initialize(targetVirtualUsers, browserPath))
+        .WithWarmUpDuration(TimeSpan.FromSeconds(5))
         .WithLoadSimulations(
-            Simulation.KeepConstant(1, TimeSpan.FromSeconds(30))
+            Simulation.KeepConstant(targetVirtualUsers, TimeSpan.FromSeconds(30))
         );
 
         NBomberRunner

diff --git a/examples/HttpSimulator/Controllers/HomeController.cs b/examples/HttpSimulator/Controllers/HomeController.cs
@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace HttpSimulator.Controllers
+{
+    public class HomeController : Controller
+    {
+        private readonly ILogger<HomeController> _logger;
+
+        public HomeController(ILogger<HomeController> logger)
+        {
+            _logger = logger;
+        }
+
+        public IActionResult Index()
+        {
+            return View();
+        }
+    }
+}
diff --git a/examples/HttpSimulator/HttpSimulator.csproj b/examples/HttpSimulator/HttpSimulator.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>
diff --git a/examples/HttpSimulator/Program.cs b/examples/HttpSimulator/Program.cs
@@ -0,0 +1,31 @@
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddControllersWithViews();
+
+builder.WebHost.ConfigureKestrel(options =>
+{
+    options.Limits.MaxConcurrentConnections = 1000;
+    options.Limits.MaxConcurrentUpgradedConnections = 1000;
+});
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (!app.Environment.IsDevelopment())
+{
+    app.UseExceptionHandler("/Home/Error");
+}
+app.UseRouting();
+
+app.UseAuthorization();
+
+app.MapStaticAssets();
+
+app.MapControllerRoute(
+    name: "default",
+    pattern: "{controller=Home}/{action=Index}/{id?}")
+    .WithStaticAssets();
+
+
+app.Run();
diff --git a/examples/HttpSimulator/Views/Home/Index.cshtml b/examples/HttpSimulator/Views/Home/Index.cshtml
@@ -0,0 +1,14 @@
+@{
+    Layout = null;
+}
+
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8" />
+    <title>Hello World</title>
+</head>
+<body>
+    <h1>Hello World</h1>
+</body>
+</html>
diff --git a/examples/HttpSimulator/appsettings.Development.json b/examples/HttpSimulator/appsettings.Development.json
@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}
diff --git a/examples/HttpSimulator/appsettings.json b/examples/HttpSimulator/appsettings.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}
diff --git a/examples/HttpSimulator/wwwroot/favicon.ico b/examples/HttpSimulator/wwwroot/favicon.ico
diff --git a/src/NBomber.WebBrowser/NBomber.WebBrowser.csproj b/src/NBomber.WebBrowser/NBomber.WebBrowser.csproj
@@ -33,7 +33,8 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.Playwright" Version="1.58.0" />        
+        <PackageReference Include="Microsoft.Playwright" Version="1.58.0" />
+        <PackageReference Include="NBomber" Version="6.1.0" />
         <PackageReference Include="NBomber.Contracts" Version="6.1.0" />
         <PackageReference Include="PuppeteerSharp" Version="21.1.1" />
     </ItemGroup>