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How to use Launcher method of PuppeteerSharp.Launcher class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Launcher.Launcher

PuppeteerLaunchTests.cs

Source:PuppeteerLaunchTests.cs

...10using PuppeteerSharp.Transport;11using PuppeteerSharp.Xunit;12using Xunit;13using Xunit.Abstractions;14namespace PuppeteerSharp.Tests.LauncherTests15{16    [Collection(TestConstants.TestFixtureCollectionName)]17    public class PuppeteerLaunchTests : PuppeteerBaseTest18    {19        public PuppeteerLaunchTests(ITestOutputHelper output) : base(output) { }20        [PuppeteerFact]21        public async Task ShouldWorkInRealLife()22        {23            var options = TestConstants.DefaultBrowserOptions();24            await using (var browser = await Puppeteer.LaunchAsync(options, TestConstants.LoggerFactory))25            await using (var page = await browser.NewPageAsync())26            {27                var response = await page.GoToAsync("https://www.google.com");28                Assert.Equal(HttpStatusCode.OK, response.Status);29            }30        }31        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "should reject all promises when browser is closed")]32        [PuppeteerFact]33        public async Task ShouldRejectAllPromisesWhenBrowserIsClosed()34        {35            await using (var browser = await Puppeteer.LaunchAsync(36                TestConstants.DefaultBrowserOptions(),37                TestConstants.LoggerFactory))38            await using (var page = await browser.NewPageAsync())39            {40                var neverResolves = page.EvaluateFunctionHandleAsync("() => new Promise(r => {})");41                await browser.CloseAsync();42                var exception = await Assert.ThrowsAsync<TargetClosedException>(() => neverResolves);43                Assert.Contains("Protocol error", exception.Message);44            }45        }46        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "should reject if executable path is invalid")]47        [PuppeteerFact]48        public async Task ShouldRejectIfExecutablePathIsInvalid()49        {50            var options = TestConstants.DefaultBrowserOptions();51            options.ExecutablePath = "random-invalid-path";52            var exception = await Assert.ThrowsAsync<FileNotFoundException>(() =>53            {54                return Puppeteer.LaunchAsync(options, TestConstants.LoggerFactory);55            });56            Assert.Contains("Failed to launch", exception.Message);57            Assert.Equal(options.ExecutablePath, exception.FileName);58        }59        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "userDataDir option")]60        [PuppeteerFact]61        public async Task UserDataDirOption()62        {63            using (var userDataDir = new TempDirectory())64            {65                var options = TestConstants.DefaultBrowserOptions();66                options.UserDataDir = userDataDir.Path;67                var launcher = new Launcher(TestConstants.LoggerFactory);68                await using (var browser = await launcher.LaunchAsync(options))69                {70                    Assert.True(Directory.GetFiles(userDataDir.Path).Length > 0);71                    await browser.CloseAsync();72                    Assert.True(Directory.GetFiles(userDataDir.Path).Length > 0);73                }74            }75        }76        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "userDataDir argument")]77        [PuppeteerFact]78        public async Task UserDataDirArgument()79        {80            using (var userDataDir = new TempDirectory())81            {82                var launcher = new Launcher(TestConstants.LoggerFactory);83                var options = TestConstants.DefaultBrowserOptions();84                if (TestConstants.IsChrome)85                {86                    options.Args = options.Args.Concat(new[] { $"--user-data-dir=\"{userDataDir}\"" }).ToArray();87                }88                else89                {90                    options.Args = options.Args.Concat(new string[] { "-profile", userDataDir.ToString() }).ToArray();91                }92                await using (var browser = await launcher.LaunchAsync(options))93                {94                    // Open a page to make sure its functional.95                    await browser.NewPageAsync();96                    Assert.True(Directory.GetFiles(userDataDir.Path).Length > 0);97                    await browser.CloseAsync();98                    Assert.True(Directory.GetFiles(userDataDir.Path).Length > 0);99                }100            }101        }102        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "userDataDir option should restore state")]103        [SkipBrowserFact(skipFirefox: true)]104        public async Task UserDataDirOptionShouldRestoreState()105        {106            using (var userDataDir = new TempDirectory())107            {108                var launcher = new Launcher(TestConstants.LoggerFactory);109                var options = TestConstants.DefaultBrowserOptions();110                if (TestConstants.IsChrome)111                {112                    options.Args = options.Args.Concat(new[] { $"--user-data-dir=\"{userDataDir}\"" }).ToArray();113                }114                else115                {116                    options.Args = options.Args.Concat(new string[] { "-profile", userDataDir.ToString() }).ToArray();117                }118                await using (var browser = await launcher.LaunchAsync(options))119                {120                    var page = await browser.NewPageAsync();121                    await page.GoToAsync(TestConstants.EmptyPage);122                    await page.EvaluateExpressionAsync("localStorage.hey = 'hello'");123                }124                await using (var browser2 = await Puppeteer.LaunchAsync(options, TestConstants.LoggerFactory))125                {126                    var page2 = await browser2.NewPageAsync();127                    await page2.GoToAsync(TestConstants.EmptyPage);128                    Assert.Equal("hello", await page2.EvaluateExpressionAsync<string>("localStorage.hey"));129                }130            }131        }132        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "userDataDir option should restore cookies")]133        [PuppeteerFact(Skip = "This mysteriously fails on Windows on AppVeyor.")]134        public async Task UserDataDirOptionShouldRestoreCookies()135        {136            using (var userDataDir = new TempDirectory())137            {138                var launcher = new Launcher(TestConstants.LoggerFactory);139                var options = TestConstants.DefaultBrowserOptions();140                options.Args = options.Args.Concat(new[] { $"--user-data-dir=\"{userDataDir}\"" }).ToArray();141                await using (var browser = await launcher.LaunchAsync(options))142                {143                    var page = await browser.NewPageAsync();144                    await page.GoToAsync(TestConstants.EmptyPage);145                    await page.EvaluateExpressionAsync(146                        "document.cookie = 'doSomethingOnlyOnce=true; expires=Fri, 31 Dec 9999 23:59:59 GMT'");147                }148                await TestUtils.WaitForCookieInChromiumFileAsync(userDataDir.Path, "doSomethingOnlyOnce");149                await using (var browser2 = await Puppeteer.LaunchAsync(options, TestConstants.LoggerFactory))150                {151                    var page2 = await browser2.NewPageAsync();152                    await page2.GoToAsync(TestConstants.EmptyPage);153                    Assert.Equal("doSomethingOnlyOnce=true", await page2.EvaluateExpressionAsync<string>("document.cookie"));154                }155            }156        }157        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "should return the default arguments")]158        [PuppeteerFact]159        public void ShouldReturnTheDefaultArguments()160        {161            Assert.Contains("--headless", Puppeteer.GetDefaultArgs(TestConstants.DefaultBrowserOptions()));162            Assert.DoesNotContain("--headless", Puppeteer.GetDefaultArgs(new LaunchOptions163            {164                Headless = false165            }));166            if (TestConstants.IsChrome)167            {168                Assert.Contains("--no-first-run", Puppeteer.GetDefaultArgs(TestConstants.DefaultBrowserOptions()));169                Assert.Contains("--user-data-dir=\"foo\"", Puppeteer.GetDefaultArgs(new LaunchOptions170                {171                    UserDataDir = "foo"172                }));173            }174            else175            {176                Assert.Contains("--no-remote", Puppeteer.GetDefaultArgs(TestConstants.DefaultBrowserOptions()));177                Assert.Contains("--foreground", Puppeteer.GetDefaultArgs(TestConstants.DefaultBrowserOptions()));178                Assert.Contains("--profile", Puppeteer.GetDefaultArgs(new LaunchOptions179                {180                    UserDataDir = "foo",181                    Product = TestConstants.IsChrome ? Product.Chrome : Product.Firefox,182                }));183                Assert.Contains("\"foo\"", Puppeteer.GetDefaultArgs(new LaunchOptions184                {185                    UserDataDir = "foo",186                    Product = TestConstants.IsChrome ? Product.Chrome : Product.Firefox,187                }));188            }189        }190        [Theory]191        [InlineData(false)]192        [InlineData(true)]193        public async Task ChromeShouldBeClosed(bool useDisposeAsync)194        {195            var options = TestConstants.DefaultBrowserOptions();196            var launcher = new Launcher(TestConstants.LoggerFactory);197            await using (var browser = await launcher.LaunchAsync(options))198            await using (var page = await browser.NewPageAsync())199            {200                var response = await page.GoToAsync(TestConstants.EmptyPage);201                Assert.Equal(HttpStatusCode.OK, response.Status);202                if (useDisposeAsync)203                {204                    // emulates what would happen in a C#8 await using block205                    await browser.DisposeAsync();206                }207                else208                {209                    await browser.CloseAsync();210                }211                Assert.True(launcher.Process.HasExited);212            }213        }214        [PuppeteerFact]215        public async Task ChromeShouldBeClosedOnDispose()216        {217            var options = TestConstants.DefaultBrowserOptions();218            var launcher = new Launcher(TestConstants.LoggerFactory);219            await using (var browser = await launcher.LaunchAsync(options))220            await using (var page = await browser.NewPageAsync())221            {222                var response = await page.GoToAsync(TestConstants.EmptyPage);223                Assert.Equal(HttpStatusCode.OK, response.Status);224            }225            Assert.True(await launcher.Process.WaitForExitAsync(TimeSpan.FromSeconds(10)));226            Assert.True(launcher.Process.HasExited);227        }228        [PuppeteerFact]229        public async Task ShouldNotOpenTwoChromesUsingTheSameLauncher()230        {231            var launcher = new Launcher(TestConstants.LoggerFactory);232            await using (await launcher.LaunchAsync(TestConstants.DefaultBrowserOptions()))233            {234                var exception = await Assert.ThrowsAsync<InvalidOperationException>(() =>235                {236                    return launcher.LaunchAsync(TestConstants.DefaultBrowserOptions());237                });238                Assert.Equal("Unable to create or connect to another process", exception.Message);239            }240        }241        [PuppeteerTest("launcher.spec.ts", "Puppeteer.launch", "should work with no default arguments")]242        [SkipBrowserFact(skipFirefox: true)]243        public async Task ShouldWorkWithNoDefaultArguments()244        {245            var options = TestConstants.DefaultBrowserOptions();...

PuppeteerConnectTests.cs

Source:PuppeteerConnectTests.cs

...7using Xunit.Abstractions;8using PuppeteerSharp.Helpers;9using PuppeteerSharp.Tests.Attributes;10using PuppeteerSharp.Xunit;11namespace PuppeteerSharp.Tests.LauncherTests12{13    [Collection(TestConstants.TestFixtureCollectionName)]14    public class PuppeteerConnectTests : PuppeteerBrowserBaseTest15    {16        public PuppeteerConnectTests(ITestOutputHelper output) : base(output)17        {18        }19        [PuppeteerTest("launcher.spec.ts", "Puppeteer.connect", "should be able to connect multiple times to the same browser")]20        [PuppeteerFact]21        public async Task ShouldBeAbleToConnectMultipleTimesToSameBrowser()22        {23            var options = new ConnectOptions()24            {25                BrowserWSEndpoint = Browser.WebSocketEndpoint...

FixturesTests.cs

Source:FixturesTests.cs

...34        public async Task ShouldCloseTheBrowserWhenTheConnectedProcessCloses()35        {36            var browserClosedTaskWrapper = new TaskCompletionSource<bool>();37            using var browserFetcher = new BrowserFetcher(Product.Chrome);38            var ChromiumLauncher = new ChromiumLauncher(39                (await browserFetcher.GetRevisionInfoAsync()).ExecutablePath,40                new LaunchOptions { Headless = true });41            await ChromiumLauncher.StartAsync().ConfigureAwait(false);42            var browser = await Puppeteer.ConnectAsync(new ConnectOptions43            {44                BrowserWSEndpoint = ChromiumLauncher.EndPoint45            });46            browser.Disconnected += (_, _) =>47            {48                browserClosedTaskWrapper.SetResult(true);49            };50            KillProcess(ChromiumLauncher.Process.Id);51            await browserClosedTaskWrapper.Task;52            Assert.True(browser.IsClosed);53        }54        [PuppeteerTest("fixtures.spec.ts", "Fixtures", "should close the browser when the node process closes")]55        [SkipBrowserFact(skipFirefox: true)]56        public async Task ShouldCloseTheBrowserWhenTheLaunchedProcessCloses()57        {58            var browserClosedTaskWrapper = new TaskCompletionSource<bool>();59            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true }, TestConstants.LoggerFactory);60            browser.Disconnected += (_, _) =>61            {62                browserClosedTaskWrapper.SetResult(true);63            };64            KillProcess(browser.Launcher.Process.Id);65            await browserClosedTaskWrapper.Task;66            Assert.True(browser.IsClosed);67        }68        private void KillProcess(int pid)69        {70            var process = new Process();71            //We need to kill the process tree manually72            //See: https://github.com/dotnet/corefx/issues/2623473            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))74            {75                process.StartInfo.FileName = "taskkill";76                process.StartInfo.Arguments = $"-pid {pid} -t -f";77            }78            else...

Program.cs

Source:Program.cs

...27            [28592:33396:0217/074915.471:ERROR:shader_disk_cache.cc(601)] Shader Cache Creation failed: -228            [28592:33396:0217/074915.473:ERROR:browser_gpu_channel_host_factory.cc(138)] Failed to launch GPU process.29            at PuppeteerSharp.ChromiumProcess.State.StartingState.StartCoreAsync(ChromiumProcess p)30            at PuppeteerSharp.ChromiumProcess.State.StartingState.StartCoreAsync(ChromiumProcess p)31            at PuppeteerSharp.Launcher.LaunchAsync(LaunchOptions options)32            at PuppeteerSharp.Launcher.LaunchAsync(LaunchOptions options)33            */34            KillPreviousWebBrowserProcesses();35            StartWebBrowser().Wait();36        }37        static void KillPreviousWebBrowserProcesses()38        {39            var matchingProcesses =40                System.Diagnostics.Process.GetProcesses()41                /*42                2020-02-1743                .Where(process => process.StartInfo.Arguments.Contains(UserDataDirPath(), StringComparison.InvariantCultureIgnoreCase))44                */45                .Where(ProcessIsWebBrowser)46                .ToList();...

HeadlessChromiumPuppeteerLauncher.cs

Source:HeadlessChromiumPuppeteerLauncher.cs

...3using System;4using System.Threading.Tasks;5namespace HeadlessChromium.Puppeteer.Lambda.Dotnet6{7    public class HeadlessChromiumPuppeteerLauncher8    {9        public static string[] DefaultChromeArgs = new[] 10        {11            "--disable-background-timer-throttling",12            "--disable-breakpad",13            "--disable-client-side-phishing-detection",14            "--disable-cloud-import",15            "--disable-default-apps",16            "--disable-dev-shm-usage",17            "--disable-extensions",18            "--disable-gesture-typing",19            "--disable-hang-monitor",20            "--disable-infobars",21            "--disable-notifications",22            "--disable-offer-store-unmasked-wallet-cards",23            "--disable-offer-upload-credit-cards",24            "--disable-popup-blocking",25            "--disable-print-preview",26            "--disable-prompt-on-repost",27            "--disable-setuid-sandbox",28            "--disable-speech-api",29            "--disable-sync",30            "--disable-tab-for-desktop-share",31            "--disable-translate",32            "--disable-voice-input",33            "--disable-wake-on-wifi",34            "--disk-cache-size=33554432",35            "--enable-async-dns",36            "--enable-simple-cache-backend",37            "--enable-tcp-fast-open",38            "--enable-webgl",39            "--hide-scrollbars",40            "--ignore-gpu-blacklist",41            "--media-cache-size=33554432",42            "--metrics-recording-only",43            "--mute-audio",44            "--no-default-browser-check",45            "--no-first-run",46            "--no-pings",47            "--no-sandbox",48            "--no-zygote",49            "--password-store=basic",50            "--prerender-from-omnibox=disabled",51            "--use-gl=swiftshader",52            "--use-mock-keychain",53            "--single-process",54        };55        private readonly ILoggerFactory loggerFactory;56        public HeadlessChromiumPuppeteerLauncher(ILoggerFactory loggerFactory)57        {58            this.loggerFactory = loggerFactory;59        }60        public Task<Browser> LaunchAsync()61        {62            return LaunchAsync(DefaultChromeArgs);63        }64        public async Task<Browser> LaunchAsync(string[] chromeArgs)65        {66            var chromeLocation = new ChromiumExtractor(loggerFactory).ExtractChromium();67            var launchOptions = new LaunchOptions()68            {69                ExecutablePath = chromeLocation,70                Args = chromeArgs,71                Headless = true72            };73            return await new Launcher(loggerFactory).LaunchAsync(launchOptions);74        }75    }76}...

BrowserDisconnectTests.cs

Source:BrowserDisconnectTests.cs

2using PuppeteerSharp.Tests.Attributes;3using PuppeteerSharp.Xunit;4using Xunit;5using Xunit.Abstractions;6namespace PuppeteerSharp.Tests.LauncherTests7{8    [Collection(TestConstants.TestFixtureCollectionName)]9    public class BrowserDisconnectTests : PuppeteerBrowserBaseTest10    {11        public BrowserDisconnectTests(ITestOutputHelper output) : base(output)12        {13        }14        [PuppeteerTest("launcher.spec.ts", "Browser.disconnect", "should reject navigation when browser closes")]15        [PuppeteerFact]16        public async Task ShouldRejectNavigationWhenBrowserCloses()17        {18            Server.SetRoute("/one-style.css", _ => Task.Delay(10000));19            await using (var browser = await Puppeteer.LaunchAsync(TestConstants.DefaultBrowserOptions()))20            {...

HtmlToPdfConverter.cs

Source:HtmlToPdfConverter.cs

...14            var downloadTask = Task.Run(() => new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision));15            downloadTask.Wait();16            if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))17            {18                var path = Launcher.GetExecutablePath();19                Bash($"chmod 777 {path}");20            }21            browser = Task.Run(() => Puppeteer.LaunchAsync(new LaunchOptions { Headless = true, Args = new string[] { "--no-sandbox" } })).Result;22        }23        private void Bash(string cmd)24        {25            var escapedArgs = cmd.Replace("\"", "\\\"");26            var process = new Process()27            {28                StartInfo = new ProcessStartInfo29                {30                    FileName = "/bin/bash",31                    Arguments = $"-c \"{escapedArgs}\"",32                    RedirectStandardOutput = true,...

ExitingState.cs

Source:ExitingState.cs

...8    {9        public ExitingState(StateManager stateManager) : base(stateManager)10        {11        }12        public override Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)13            => !StateManager.TryEnter(p, fromState, this) ? StateManager.CurrentState.ExitAsync(p, timeout) : ExitAsync(p, timeout);14        public override async Task ExitAsync(LauncherBase p, TimeSpan timeout)15        {16            var waitForExitTask = WaitForExitAsync(p);17            await waitForExitTask.WithTimeout(18                async () =>19                {20                    await StateManager.Killing.EnterFromAsync(p, this, timeout).ConfigureAwait(false);21                    await waitForExitTask.ConfigureAwait(false);22                },23                timeout,24                CancellationToken.None).ConfigureAwait(false);25        }26        public override Task KillAsync(LauncherBase p) => StateManager.Killing.EnterFromAsync(p, this);27    }28}...

Launcher

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using PuppeteerSharp;5{6    {7        static void Main(string[] args)8        {9            MainAsync().GetAwaiter().GetResult();10        }11        static async Task MainAsync()12        {13            {14                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"15            };16            using (var browser = await Puppeteer.LaunchAsync(options))17            using (var page = await browser.NewPageAsync())18            {19                await page.ScreenshotAsync("google.png");20            }21        }22    }23}24using System;25using System.IO;26using System.Threading.Tasks;27using PuppeteerSharp;28{29    {30        static void Main(string[] args)31        {32            MainAsync().GetAwaiter().GetResult();33        }34        static async Task MainAsync()35        {36            {37                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"38            };39            using (var browser = await Puppeteer.LaunchAsync(options))40            using (var page = await browser.NewPageAsync())41            {42                await page.ScreenshotAsync("google.png");43            }44        }45    }46}47using System;48using System.IO;49using System.Threading.Tasks;50using PuppeteerSharp;51{52    {53        static void Main(string[] args)54        {55            MainAsync().GetAwaiter().GetResult();56        }57        static async Task MainAsync()58        {59            {60                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"61            };62            using (var browser = Puppeteer.Launch

Launcher

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions10            {11                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"12            });13            var page = await browser.NewPageAsync();14            await page.ScreenshotAsync("example.png");15            await browser.CloseAsync();16        }17    }18}

Launcher

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5 static async Task Main(string[] args)6 {

Launcher

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions10            {11                Args = new string[] { "--no-sandbox" }12            });13            var page = await browser.NewPageAsync();14            await page.ScreenshotAsync("google.png");15            await browser.CloseAsync();16        }17    }18}19using System;20using System.Threading.Tasks;21using PuppeteerSharp;22{23    {24        static async Task Main(string[] args)25        {26            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);27            var browser = await Puppeteer.LaunchAsync(new LaunchOptions28            {29                Args = new string[] { "--no-sandbox" }30            });31            var page = await browser.NewPageAsync();32            await page.ScreenshotAsync("google.png");33            await browser.CloseAsync();34        }35    }36}

Launcher

Using AI Code Generation

1using System;2using System.Diagnostics;3using System.Threading.Tasks;4using PuppeteerSharp;5{6    {7        static async Task Main(string[] args)8        {9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions10            {11                Args = new string[] { "--no-sandbox" }12            });13            var page = await browser.NewPageAsync();14            await page.ScreenshotAsync("google.png");15            await page.CloseAsync();16            await browser.CloseAsync();17            var proc = Process.GetProcessesByName("chrome")[0];18            proc.Kill();19            proc.WaitForExit();20            proc.Close();21        }22    }23}24using System;25using System.Diagnostics;26using System.Threading.Tasks;27using PuppeteerSharp;28{29    {30        static async Task Main(string[] args)31        {32            var browser = await Puppeteer.LaunchAsync(new LaunchOptions33            {34                Args = new string[] { "--no-sandbox" }35            });36            var page = await browser.NewPageAsync();37            await page.ScreenshotAsync("google.png");38            await page.CloseAsync();

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