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How to use string method of PuppeteerSharp.LaunchOptions class

Best Puppeteer-sharp code snippet using PuppeteerSharp.LaunchOptions.string

BrowserUtils.cs

Source:BrowserUtils.cs

...9using System.IO.Compression;10namespace OutSystems.NssUltimatePDF.Browser11{12    public class BrowserUtils : IDisposable {13        private const string USER_AGENT_SUFFIX = "UltimatePDF/1.0";14        private PuppeteerSharp.Browser browser = null;15        private static BrowserFetcher BrowserFetcher {16            get {17                return new BrowserFetcher(new BrowserFetcherOptions() {18                    Path = Path.Combine(Path.GetTempPath(), ".local-chromium")19                });20            }21        }22        private static string[] BrowserArgs {23            get {24                // Flags required for software rendering, since hardware acceleration is not available in session 025                return new string[] { "--disable-gpu", "--no-sandbox" };26            }27        }28        public static RevisionInfo RevisionInfo(int revision) {29            return BrowserFetcher.RevisionInfo(revision != 0 ? revision : BrowserFetcher.DefaultRevision);30        }31        public static bool IsValidRevision(RevisionInfo revision) {32            return File.Exists(revision.ExecutablePath);33        }34        public static IEnumerable<int> ValidLocalRevisions() {35            return BrowserFetcher.LocalRevisions().Where(r => IsValidRevision(RevisionInfo(r)));36        }37        public static async Task DownloadRevision(RevisionInfo revision) {38            if (Directory.Exists(revision.FolderPath) && !IsValidRevision(revision)) {39                Directory.Delete(revision.FolderPath, true);40            }41            await BrowserFetcher.DownloadAsync(revision.Revision);42        }43        public static void ExtractRevision(RevisionInfo revision, byte[] zip) {44            if (Directory.Exists(revision.FolderPath) && !IsValidRevision(revision)) {45                Directory.Delete(revision.FolderPath, true);46            }47            using (MemoryStream stream = new MemoryStream(zip)) {48                using (ZipArchive archive = new ZipArchive(stream, ZipArchiveMode.Read)) {49                    foreach (var entry in archive.Entries) {50                        if (string.IsNullOrEmpty(entry.Name)) {51                            Directory.CreateDirectory(Path.Combine(revision.FolderPath, entry.FullName));52                        } else {53                            using (FileStream fileStream = File.Create(Path.Combine(revision.FolderPath, entry.FullName))) {54                                using (Stream entryStream = entry.Open()) {55                                    entryStream.CopyTo(fileStream);56                                }57                            }58                        }59                    }60                }61            }62            if (Directory.Exists(revision.FolderPath) && !IsValidRevision(revision)) {63                throw new InvalidDataException("Could not find browser in " + revision.ExecutablePath);64            }65        }66        public async Task<byte[]> PrintPDF(string url, IEnumerable<CookieParam> cookies, ViewPortOptions viewport, PdfOptions options, RevisionInfo revision) {67            LaunchOptions launchOptions = new LaunchOptions() {68                ExecutablePath = "C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe",69                Args = BrowserArgs,70                Headless = true,71                DefaultViewport = viewport,72                Timeout = 073            };74            browser = await Puppeteer.LaunchAsync(launchOptions);75            try {76                var page = await browser.NewPageAsync();77                try {78                    WaitUntilNavigation[] waitUntilNavigations = { WaitUntilNavigation.Networkidle0 };79                    NavigationOptions navigationOptions = new NavigationOptions() {80                        Timeout = 0,81                        WaitUntil = waitUntilNavigations82                    };83                    string originalUserAgent = await browser.GetUserAgentAsync();84                    await page.SetUserAgentAsync($"{originalUserAgent} {USER_AGENT_SUFFIX}");85                    if (cookies.Any()) {86                        await page.SetCookieAsync(cookies.ToArray());87                    }88                    await page.GoToAsync(url, navigationOptions);89                    await InjectCustomStylesAsync(page, ref options);90                    91                    bool hasPageNumbers = await page.EvaluateFunctionAsync<bool>("(window.UltimatePDF? window.UltimatePDF.hasPageNumbers : function() { return false; })");92                    if (hasPageNumbers) {93                        /*94                         * When the layout has page numbers, we first retrieve a95                         * first blank pdf to calculate the number of pages.96                         * Then, knowing how many pages, we can layout the headers and footers,97                         * and retrieve the final pdf.98                         */99                        byte[] blankContents = await page.PdfDataAsync(options);100                        using (var blankPdf = new PDFUtils(blankContents)) {101                            await page.EvaluateFunctionAsync("window.UltimatePDF.layoutPages", blankPdf.Pages);102                            return await page.PdfDataAsync(options);103                        }104                    } else {105                        return await page.PdfDataAsync(options);106                    }107                } finally {108                    await Cleanup(page);109                }110            } finally {111                Cleanup(browser);112            }113        }114        private Task InjectCustomStylesAsync(Page page, ref PdfOptions options) {115            /*116             * It seems that Puppeteer is not overriding the page styles from the print stylesheet.117             * As a workaround, we inject a <style> tag with the @page overrides at the end of <head>.118             * This issue might be eventually resolved in Puppeteer, and seems to be tracked by https://github.com/GoogleChrome/puppeteer/issues/393119             */120            string overrides = string.Empty;121            if (!options.PreferCSSPageSize && options.Width != null && options.Height != null) {122                overrides += $"size: {options.Width} {options.Height}; ";123            }124            if (options.MarginOptions.Top != null) {125                overrides += $"margin-top: {options.MarginOptions.Top}; ";126            }127            if (options.MarginOptions.Right != null) {128                overrides += $"margin-right: {options.MarginOptions.Right}; ";129            }130            if (options.MarginOptions.Bottom != null) {131                overrides += $"margin-bottom: {options.MarginOptions.Bottom}; ";132            }133            if (options.MarginOptions.Left != null) {134                overrides += $"margin-left: {options.MarginOptions.Left}; ";135            }136            if (!string.IsNullOrEmpty(overrides)) {137                /* Change the options so that Puppeteer respects our overrides */138                options.PreferCSSPageSize = true;139                options.Width = options.Height = null;140                options.MarginOptions = new MarginOptions();141                /* We must add the <style> tag at the end of <body> to make sure it is not overriden */142                string pageOverrides = "@page { " + overrides + "}";143                return page.EvaluateExpressionAsync($"const style = document.createElement('style'); style.innerHTML = '{pageOverrides}'; document.head.appendChild(style);");144            } else {145                return Task.CompletedTask;146            }147        }148        public async Task<byte[]> ScreenshotPNG(string url, IEnumerable<CookieParam> cookies, ViewPortOptions viewport, ScreenshotOptions options, RevisionInfo revision) {149            LaunchOptions launchOptions = new LaunchOptions() {150                ExecutablePath = revision.ExecutablePath,151                Args = BrowserArgs,152                Headless = true,153                DefaultViewport = viewport,154                Timeout = 0155            };156            browser = await Puppeteer.LaunchAsync(launchOptions);157            try {158                var page = await browser.NewPageAsync();159                try {160                    NavigationOptions navigationOptions = new NavigationOptions() {161                        Timeout = 0162                    };163                    string originalUserAgent = await browser.GetUserAgentAsync();164                    await page.SetUserAgentAsync($"{originalUserAgent} {USER_AGENT_SUFFIX}");165                    if (cookies.Any()) {166                        await page.SetCookieAsync(cookies.ToArray());167                    }168                    await page.GoToAsync(url, navigationOptions);169                    return await page.ScreenshotDataAsync(options);170                } finally {171                    await Cleanup(page);172                }173            } finally {174                Cleanup(browser);175            }176        }177        public bool UserAgentMatches(string userAgent) {178            return userAgent.EndsWith($" {USER_AGENT_SUFFIX}");179        }180        private async Task Cleanup(Page page) {181            await page.CloseAsync();182        }183        private void Cleanup(PuppeteerSharp.Browser browser) {184            browser.Disconnect();185            Dispose();186        }187        public void Dispose() {188            if (browser != null) {189                ProcessUtils.KillProcessTree(browser.Process);190            }191        }...

Methods.cs

Source:Methods.cs

...46            }47            // Configure the options48            var launchOptions = new LaunchOptions49            {50                Args = new string[] { args },51                ExecutablePath = data.Providers.PuppeteerBrowser.ChromeBinaryLocation,52                Headless = data.ConfigSettings.PuppeteerSettings.Headless,53                DefaultViewport = null // This is important54            };55            // Add the plugins56            var extra = new PuppeteerExtra();57            extra.Use(new StealthPlugin());58            // Launch the browser59            var browser = await extra.LaunchAsync(launchOptions);60            browser.IgnoreHTTPSErrors = data.ConfigSettings.PuppeteerSettings.IgnoreHttpsErrors;61            // Save the browser for further use62            data.SetObject("puppeteer", browser);63            var page = (await browser.PagesAsync()).First();64            SetPageAndFrame(data, page);65            await SetPageLoadingOptions(data, page);66            // Authenticate if the proxy requires auth67            if (data.UseProxy && data.Proxy is { NeedsAuthentication: true, Type: ProxyType.Http } proxy)68                await page.AuthenticateAsync(new Credentials { Username = proxy.Username, Password = proxy.Password });69            data.Logger.Log($"{(launchOptions.Headless ? "Headless " : "")}Browser opened successfully!", LogColors.DarkSalmon);70        }71        [Block("Closes an open puppeteer browser", name = "Close Browser")]72        public static async Task PuppeteerCloseBrowser(BotData data)73        {74            data.Logger.LogHeader();75            var browser = GetBrowser(data);76            await browser.CloseAsync();77            StopYoveProxyInternalServer(data);78            data.Logger.Log("Browser closed successfully!", LogColors.DarkSalmon);79        }80        [Block("Opens a new page in a new browser tab", name = "New Tab")]81        public static async Task PuppeteerNewTab(BotData data)82        {83            data.Logger.LogHeader();84            var browser = GetBrowser(data);85            var page = await browser.NewPageAsync();86            await SetPageLoadingOptions(data, page);87            SetPageAndFrame(data, page); // Set the new page as active88            data.Logger.Log($"Opened a new page", LogColors.DarkSalmon);89        }90        [Block("Closes the currently active browser tab", name = "Close Tab")]91        public static async Task PuppeteerCloseTab(BotData data)92        {93            data.Logger.LogHeader();94            var browser = GetBrowser(data);95            var page = GetPage(data);96            97            // Close the page98            await page.CloseAsync();99            100            // Set the first page as active101            page = (await browser.PagesAsync()).FirstOrDefault();102            SetPageAndFrame(data, page);103            if (page != null)104                await page.BringToFrontAsync();105            data.Logger.Log($"Closed the active page", LogColors.DarkSalmon);106        }107        [Block("Switches to the browser tab with a specified index", name = "Switch to Tab")]108        public static async Task PuppeteerSwitchToTab(BotData data, int index)109        {110            data.Logger.LogHeader();111            var browser = GetBrowser(data);112            var page = (await browser.PagesAsync())[index];113            await page.BringToFrontAsync();114            SetPageAndFrame(data, page);115            data.Logger.Log($"Switched to tab with index {index}", LogColors.DarkSalmon);116        }117        [Block("Reloads the current page", name = "Reload")]118        public static async Task PuppeteerReload(BotData data)119        {120            data.Logger.LogHeader();121            var page = GetPage(data);122            await page.ReloadAsync();123            SwitchToMainFramePrivate(data);124            data.Logger.Log($"Reloaded the page", LogColors.DarkSalmon);125        }126        [Block("Goes back to the previously visited page", name = "Go Back")]127        public static async Task PuppeteerGoBack(BotData data)128        {129            data.Logger.LogHeader();130            var page = GetPage(data);131            await page.GoBackAsync();132            SwitchToMainFramePrivate(data);133            data.Logger.Log($"Went back to the previously visited page", LogColors.DarkSalmon);134        }135        [Block("Goes forward to the next visited page", name = "Go Forward")]136        public static async Task PuppeteerGoForward(BotData data)137        {138            data.Logger.LogHeader();139            var page = GetPage(data);140            await page.GoForwardAsync();141            SwitchToMainFramePrivate(data);142            data.Logger.Log($"Went forward to the next visited page", LogColors.DarkSalmon);143        }144        private static PuppeteerSharp.Browser GetBrowser(BotData data)145            => data.TryGetObject<PuppeteerSharp.Browser>("puppeteer") ?? throw new Exception("The browser is not open!");146        private static PuppeteerSharp.Page GetPage(BotData data)147            => data.TryGetObject<PuppeteerSharp.Page>("puppeteerPage") ?? throw new Exception("No pages open!");148        private static void SwitchToMainFramePrivate(BotData data)149            => data.SetObject("puppeteerFrame", GetPage(data).MainFrame);150        private static void SetPageAndFrame(BotData data, PuppeteerSharp.Page page)151        {152            data.SetObject("puppeteerPage", page);153            SwitchToMainFramePrivate(data);154        }155        private static void StopYoveProxyInternalServer(BotData data)156            => data.TryGetObject<ProxyClient>("puppeteer.yoveproxy")?.Dispose();157        private static async Task SetPageLoadingOptions(BotData data, PuppeteerSharp.Page page)158        {159            await page.SetRequestInterceptionAsync(true);160            page.Request += (sender, e) =>161            {162                // If we only want documents and scripts but the resource is not one of those, block163                if (data.ConfigSettings.PuppeteerSettings.LoadOnlyDocumentAndScript && 164                    e.Request.ResourceType != ResourceType.Document && e.Request.ResourceType != ResourceType.Script)165                {166                    e.Request.AbortAsync();167                }168                // If the url contains one of the blocked urls169                else if (data.ConfigSettings.PuppeteerSettings.BlockedUrls170                    .Where(u => !string.IsNullOrWhiteSpace(u))171                    .Any(u => e.Request.Url.Contains(u, StringComparison.OrdinalIgnoreCase)))172                {173                    e.Request.AbortAsync();174                }175                // Otherwise all good, continue176                else177                {178                    e.Request.ContinueAsync();179                }180            };181            if (data.ConfigSettings.PuppeteerSettings.DismissDialogs)182            {183                page.Dialog += (sender, e) =>184                {...

SaveWebPage.xaml.cs

Source:SaveWebPage.xaml.cs

1ï»¿using CSharpCrawler.Util;2using System;3using System.Collections.Generic;4using System.IO;5using System.Linq;6using System.Text;7using System.Threading.Tasks;8using System.Windows;9using System.Windows.Controls;10using System.Windows.Data;11using System.Windows.Documents;12using System.Windows.Input;13using System.Windows.Media;14using System.Windows.Media.Imaging;15using System.Windows.Navigation;16using System.Windows.Shapes;17using ZT.Enhance;1819namespace CSharpCrawler.Views20{21    /// <summary>22    /// SaveWebPage.xaml çäº¤äºé»è¾23    /// </summary>24    public partial class SaveWebPage : Page25    {26        public SaveWebPage()27        {28            InitializeComponent();29        }303132        private async void btn_SaveAsImage_Click(object sender, RoutedEventArgs e)33        {34            //å¦æè¿ä¸æ¥åçå¼å¸¸äºï¼å¯ä»¥åè https://www.cnblogs.com/zhaotianff/p/13528507.html35            try36            {37                await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);3839                var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions40                {41                    Headless = true42                });4344                var page = await browser.NewPageAsync();  //æå¼ä¸ä¸ªæ°æ ç¾45                await page.GoToAsync(this.tbox_Url.Text); //è®¿é®é¡µé¢4647                //è®¾ç½®æªå¾éé¡¹48                PuppeteerSharp.ScreenshotOptions screenshotOptions = new PuppeteerSharp.ScreenshotOptions();49                //screenshotOptions.Clip = new PuppeteerSharp.Media.Clip() { Height = 0, Width = 0, X = 0, Y = 0 };//è®¾ç½®æªåªåºå50                screenshotOptions.FullPage = true; //æ¯å¦æªåæ´ä¸ªé¡µé¢51                screenshotOptions.OmitBackground = false;//æ¯å¦ä½¿ç¨éæèæ¯ï¼èä¸æ¯é»è®¤ç½è²èæ¯52                screenshotOptions.Quality = 100; //æªå¾è´¨é 0-100ï¼pngä¸å¯ç¨ï¼53                screenshotOptions.Type = PuppeteerSharp.ScreenshotType.Jpeg; //æªå¾æ ¼å¼5455                var fileName = Environment.CurrentDirectory + $"\\download\\{await page.GetTitleAsync()}.jpg";5657                if (System.IO.File.Exists(fileName))58                {59                    fileName = fileName.Replace(".jpg", $"{DateTime.Now.ToString("ffff")}.jpg");60                }6162                await page.ScreenshotAsync(fileName, screenshotOptions);6364                if (System.IO.File.Exists(fileName))65                {66                    BitmapImage bi = new BitmapImage();67                    bi.BeginInit();68                    bi.UriSource = new Uri(fileName, UriKind.Absolute);69                    bi.EndInit();70                    this.image.Source = bi;71                }72                else73                {74                    EMessageBox.Show("ä¿åç½é¡µæªå¾å¤±è´¥");75                }7677                //å¨æåè®°å¾å³éæµè§å¨åéæ¾èµæº78                browser.Disconnect();79                browser.Dispose();80            }81            catch(Exception ex)82            {83                EMessageBox.Show(ex.Message);84            }85        }8687        private async void btn_SaveAsPDF_Click(object sender, RoutedEventArgs e)88        {89            //æå¼ç½é¡µçæä½è·ä¸é¢æ¯ä¸æ ·ç90            try91            {92                await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);93                var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions94                {95                    Headless = true96                });97                var page = await browser.NewPageAsync();  //æå¼ä¸ä¸ªæ°æ ç¾98                await page.GoToAsync(this.tbox_Url.Text); //è®¿é®é¡µé¢99100                //è®¾ç½®PDFéé¡¹101                PuppeteerSharp.PdfOptions pdfOptions = new PuppeteerSharp.PdfOptions();102                pdfOptions.DisplayHeaderFooter = false; //æ¯å¦æ¾ç¤ºé¡µçé¡µè103                pdfOptions.FooterTemplate = "";   //é¡µèææ¬104105                var width = await page.EvaluateFunctionAsync<int>("function getWidth(){return document.body.scrollWidth}");106                var height = await page.EvaluateFunctionAsync<int>("function getHeight(){return document.body.scrollHeight}");107108                pdfOptions.Width = $"{width}px";109                pdfOptions.Height = $"{height}px";110111                pdfOptions.HeaderTemplate = "";   //é¡µçææ¬112                pdfOptions.Landscape = false;     //çº¸å¼ æ¹å false-åç´ true-æ°´å¹³113                pdfOptions.MarginOptions = new PuppeteerSharp.Media.MarginOptions() { Bottom = "0px", Left = "0px", Right = "0px", Top = "0px" }; //çº¸å¼ è¾¹è·ï¼éè¦è®¾ç½®å¸¦åä½çå¼ï¼é»è®¤å¼æ¯None114                pdfOptions.Scale = 1m;            //PDFç¼©æ¾ï¼ä»0-1115                pdfOptions.PrintBackground = true;116117                var fileName = Environment.CurrentDirectory + $"\\download\\{await page.GetTitleAsync()}.pdf";118119                if (System.IO.File.Exists(fileName))120                {121                    fileName = fileName.Replace(".pdf", $"{DateTime.Now.ToString("ffff")}.pdf");122                }123124                //ä¿åPDF125                await page.PdfAsync(fileName, pdfOptions);126                EMessageBox.Show($"{fileName}ä¿åæå");127128                //å¨æåè®°å¾å³éæµè§å¨åéæ¾èµæº129                browser.Disconnect();130                browser.Dispose();131            }132            catch(Exception ex)133            {134                EMessageBox.Show(ex.Message);135            }136        }137    }138}
...

ApiFactory.cs

Source:ApiFactory.cs

...18        }19        public async Task<List<Type>> Create(BrowserOptions configuration)20        {21            var executablePath = configuration?.ExecutablePath;22            var downloadBrowser = string.IsNullOrWhiteSpace(executablePath) && string.IsNullOrWhiteSpace(configuration?.BrowserWSEndpoint);23            if (downloadBrowser)24            {25                var path = GetBrowserPath();26                _logger.LogDebug("Downloading browser to path {Path}", path);27                28                var browserConfigurationFile = Path.Combine(path, ".browser.config");29                if (File.Exists(browserConfigurationFile))30                {31                    executablePath = await File.ReadAllTextAsync(browserConfigurationFile, Encoding.UTF8);32                    if (!File.Exists(executablePath))33                    {34                        File.Delete(browserConfigurationFile);35                        Directory.Delete(path, true);36                        executablePath = string.Empty;37                        await Task.Delay(TimeSpan.FromMilliseconds(300));38                    }39                }40                if (!File.Exists(browserConfigurationFile))41                {42                    if (!Directory.Exists(path))43                    {44                        Directory.CreateDirectory(path);45                    }46                    var browserFetcherOptions = new BrowserFetcherOptions { Path = path };47                    var browserFetcher = new BrowserFetcher(browserFetcherOptions);48                    await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision).ConfigureAwait(false);49                    executablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision);50                    await File.WriteAllTextAsync(browserConfigurationFile, executablePath, Encoding.UTF8);51                    await Task.Delay(TimeSpan.FromMilliseconds(300));52                }53                executablePath = await File.ReadAllTextAsync(browserConfigurationFile, Encoding.UTF8);54            }55            var code = string.Empty;56            if (!string.IsNullOrWhiteSpace(executablePath))57            {58                if (!File.Exists(executablePath))59                {60                    throw new ArgumentException($"Can not use executable as the browser. File {executablePath} not found.");61                }62                _logger.LogDebug("Using locally installed Chromium based browser");63                var sourceWriter = new StringBuilder();64                sourceWriter.UsingNamespace("System.Threading.Tasks");65                sourceWriter.UsingNamespace("PuppeteerSharp");66                sourceWriter.Namespace("Weikio.ApiFramework.Plugins.Browser");67                sourceWriter.StartClass($"ExecutableBrowser : WebBrowser");68                sourceWriter.WriteLine($"private readonly string _executablePath = @\"{executablePath}\";");69                sourceWriter.Write(70                    "protected override async Task<PuppeteerSharp.Browser> GetBrowser() { var launchOptions = new LaunchOptions() { Headless = true, ExecutablePath = _executablePath };var result = await Puppeteer.LaunchAsync(launchOptions); return result; }");71                sourceWriter.FinishBlock(); // Finish the class72                sourceWriter.FinishBlock(); // Finish the namespace73                code = sourceWriter.ToString();74            }75            else76            {77                _logger.LogDebug("Using remote browser");78                var sourceWriter = new StringBuilder();79                sourceWriter.UsingNamespace("System.Threading.Tasks");80                sourceWriter.UsingNamespace("PuppeteerSharp");81                sourceWriter.Namespace("Weikio.ApiFramework.Plugins.Browser");82                sourceWriter.StartClass($"RemoteBrowser : WebBrowser");83                sourceWriter.WriteLine($"private readonly string _browserWSEndpoint = \"{configuration?.BrowserWSEndpoint}\";");84                sourceWriter.Write(85                    "protected override async Task<PuppeteerSharp.Browser> GetBrowser() { var connectOptions = new ConnectOptions() { BrowserWSEndpoint = _browserWSEndpoint };var result = await Puppeteer.ConnectAsync(connectOptions); return result; }");86                sourceWriter.FinishBlock(); // Finish the class87                sourceWriter.FinishBlock(); // Finish the namespace88                code = sourceWriter.ToString();89            }90            var generator = new CodeToAssemblyGenerator();91            generator.ReferenceAssemblyContainingType<WebBrowser>();92            generator.ReferenceAssemblyContainingType<PuppeteerSharp.Browser>();93            var assembly = generator.GenerateAssembly(code);94            var result = assembly.GetExportedTypes()95                .ToList();96            return result;97        }98        public static string GetBrowserPath()99        {100            return Path.Combine(Path.GetTempPath(), "ApiFramework_Browser");101        }102    }103}...

Program.cs

Source:Program.cs

...5    class Program6    {7        static PuppeteerSharp.Browser browser;8        static PuppeteerSharp.Page browserPage;9        static Action<string> callbackFromBrowserDelegate;10        static string UserDataDirPath() =>11            System.IO.Path.Combine(Environment.GetEnvironmentVariable("LOCALAPPDATA"), "bot", "web-browser", "user-data");12        static void Main(string[] args)13        {14            /*15            2020-02-17 Observation before introducing the killing of previous web browser processes:16            LaunchAsync failed if a process from the last run was still present.17            (See report of this issue at https://forum.botengine.org/t/farm-manager-tribal-wars-2-farmbot/3038/32?u=viir)18            Unhandled exception. System.AggregateException: One or more errors occurred. (Failed to launch Chromium! [28592:33396:0217/074915.470:ERROR:cache_util_win.cc(21)] Unable to move the cache: Access is denied. (0x5)19            [28592:33396:0217/074915.471:ERROR:cache_util.cc(141)] Unable to move cache folder C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\GPUCache to C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\old_GPUCache_00020            [28592:33396:0217/074915.471:ERROR:disk_cache.cc(178)] Unable to create cache21            [28592:33396:0217/074915.471:ERROR:shader_disk_cache.cc(601)] Shader Cache Creation failed: -222            [28592:33396:0217/074915.473:ERROR:browser_gpu_channel_host_factory.cc(138)] Failed to launch GPU process.23            )24            ---> PuppeteerSharp.ChromiumProcessException: Failed to launch Chromium! [28592:33396:0217/074915.470:ERROR:cache_util_win.cc(21)] Unable to move the cache: Access is denied. (0x5)25            [28592:33396:0217/074915.471:ERROR:cache_util.cc(141)] Unable to move cache folder C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\GPUCache to C:\Users\John\AppData\Local\bot\web-browser\user-data\ShaderCache\old_GPUCache_00026            [28592:33396:0217/074915.471:ERROR:disk_cache.cc(178)] Unable to create cache27            [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();47            foreach (var process in matchingProcesses)48            {49                if (process.HasExited)50                    continue;51                process.Kill();52            }53        }54        static bool ProcessIsWebBrowser(System.Diagnostics.Process process)55        {56            try57            {58                return process.MainModule.FileName.Contains(".local-chromium");59            }60            catch61            {62                return false;63            }64        }65        static async System.Threading.Tasks.Task StartWebBrowser()66        {67            await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);68            browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions69            {70                Headless = false,71                UserDataDir = UserDataDirPath(),72                DefaultViewport = null,73            });74            browserPage = (await browser.PagesAsync()).FirstOrDefault() ?? await browser.NewPageAsync();75            await browserPage.ExposeFunctionAsync("____callback____", (string returnValue) =>76            {77                callbackFromBrowserDelegate?.Invoke(returnValue);78                return 0;79            });80        }81    }82}...

PuppeteerBrowser.cs

Source:PuppeteerBrowser.cs

...20        PuppeteerSharp.Browser browser = null;21        PuppeteerSharp.Page page = null;22        int width = 00;23        int height = 0;24        public string Name { get; set; } = null;25        public PuppeteerBrowser(string name = null)26            : this(1920, 1080, name)27        {28        }29        public PuppeteerBrowser(int displaywidth, int displayheight, string name = null)30        {31            this.width = displaywidth;32            this.height = displayheight;33            this.Name = "PuppeteerBrowser-" + (name ?? Devmasters.Core.TextUtil.GenRandomString(10));34            Init();35        }36        private void Init()37        {38            logger.Debug($"{this.Name}: Initiating PuppeteerBrowser");39            var chromeBinaryFileName = Devmasters.Core.Util.Config.GetConfigValue("ChromeBinaryFullPath");40            var launchOptions = new LaunchOptions()41            {42                Headless = true,43                DefaultViewport = new ViewPortOptions()44                {45                    DeviceScaleFactor = 1,46                    IsLandscape = false,47                    HasTouch = false,48                    IsMobile = false,49                    Height = this.height,50                    Width = this.width,51                }52            };53            if (!string.IsNullOrEmpty(chromeBinaryFileName))54                launchOptions.ExecutablePath = chromeBinaryFileName;55            this.browser = Puppeteer.LaunchAsync(launchOptions).Result;56            this.page = browser.NewPageAsync().Result;57            logger.Info($"{this.Name}: Initiated PuppeteerBrowser");58        }59        object browserLock = new object();60        public PuppeteerSharp.Page Page()61        {62                return this.page;63        }64        public void WarmUp()65        {66            logger.Debug($"{this.Name}: Warming up");67            this.page.GoToAsync("https://www.google.com").Wait();...

DocumentsV2Controller.cs

Source:DocumentsV2Controller.cs

...11namespace PdfService.Controllers {12	[ApiController]13	[Route("[controller]")]14	public class DocumentsV2Controller: ControllerBase {15		//private readonly LaunchOptions _browserOptions = new LaunchOptions { Headless = true, ExecutablePath = @"C:\Users\Zeroget\Downloads\chrome-win\chrome-win\chrome.exe", Args = new string[] { "--no-sandbox" } };16		private readonly LaunchOptions _browserOptions = new LaunchOptions { Headless = true, ExecutablePath = @"/usr/bin/chromium-browser", Args = new string[] { "--no-sandbox" } };17		private static Browser s_browser = null;18		private readonly ILogger<DocumentsV2Controller> _logger;19		public DocumentsV2Controller(ILogger<DocumentsV2Controller> logger) {20			_logger = logger;21		}22		[HttpPost("byUrl")]23		public async Task<IActionResult> Get(List<string> url, bool landscape) {24			Stopwatch stopwatch = Stopwatch.StartNew();25			stopwatch.Start();26			var files = await GeneratePdfAsync(url, landscape);27			return Ok(new { Paths = files.Select(x => "/pdf/" + x), Elapsed = stopwatch.ElapsedMilliseconds });28		}29		[HttpPost("byFile")]30		public async Task<IActionResult> Post(IFormFileCollection fileStream, bool landscape) {31			Stopwatch stopwatch = Stopwatch.StartNew();32			stopwatch.Start();33			var files = await GeneratePdfAsync(fileStream.ToList(), landscape);34			return Ok(new { Paths = files.Select(x => "/pdf/" + x), Elapsed = stopwatch.ElapsedMilliseconds });35		}36		[NonAction]37		public async Task<List<string>> GeneratePdfAsync(List<IFormFile> streams, bool landscape) {38			s_browser ??= await Puppeteer.LaunchAsync(_browserOptions);39			var tasks = streams.Select(async x => {40				using (StreamReader stringReader = new StreamReader(x.OpenReadStream()))41				using (var page = await s_browser.NewPageAsync()) {42					await page.SetContentAsync(await stringReader.ReadToEndAsync());43					var fileName = $"{Guid.NewGuid()}.pdf";44					await page.PdfAsync($"{Directory.GetCurrentDirectory()}/files/{fileName}", new PdfOptions() { Format = PuppeteerSharp.Media.PaperFormat.A4, Landscape = landscape, OmitBackground = true, PrintBackground = true });45					return fileName;46				}47			});48			var files = await Task.WhenAll(tasks);49			return files.ToList();50		}51		[NonAction]52		public async Task<List<string>> GeneratePdfAsync(List<string> url, bool landscape) {53			s_browser ??= await Puppeteer.LaunchAsync(_browserOptions);54			var tasks = url.Select(async x => {55				using (var page = await s_browser.NewPageAsync()) {56					await page.GoToAsync(x);57					var fileName = $"{Guid.NewGuid()}.pdf";58					await page.PdfAsync($"{Directory.GetCurrentDirectory()}/files/{fileName}", new PdfOptions() { Format = PuppeteerSharp.Media.PaperFormat.A4, Landscape = landscape, OmitBackground = true, PrintBackground = true });59					return fileName;60				}61			});62			var files = await Task.WhenAll(tasks);63			return files.ToList();64		}65	}66}...

PuppeteerUtility.csx

Source:PuppeteerUtility.csx

1#r "nuget:PuppeteerSharp, 1.18.0"2using PuppeteerSharp;3public static class PuppeteerUtility{4    private static string findChrome(){5        var chromeProcs = System.Diagnostics.Process.GetProcessesByName("chrome");6        if( !chromeProcs.Any()){7            throw new Exception("Chrome must be running for this code to find it");8        }9        return chromeProcs.First().Modules[0].FileName;10    }11    public async static Task<PageResult> GetPage(){12        var browser = await Puppeteer.LaunchAsync(new LaunchOptions13        {14            Headless = false,15            ExecutablePath = findChrome(),16            Args = new[]{ "--app=http://localhost/null" }17        });18        var page = (await browser.PagesAsync())[0];...

string

Using AI Code Generation

1{2  {3  }4};5var browser = await Puppeteer.LaunchAsync(options);6var page = await browser.NewPageAsync();7await page.PdfAsync("google.pdf");8await browser.CloseAsync();9{10  {11  }12};13var browser = await Puppeteer.LaunchAsync(options);14var page = await browser.NewPageAsync();15await page.PdfAsync("google.pdf");16await browser.CloseAsync();17{18  {19  }20};21var browser = await Puppeteer.LaunchAsync(options);22var page = await browser.NewPageAsync();23await page.PdfAsync("google.pdf");24await browser.CloseAsync();25{26  {27  }28};29var browser = await Puppeteer.LaunchAsync(options);30var page = await browser.NewPageAsync();31await page.PdfAsync("google.pdf");32await browser.CloseAsync();33{34  {35  }36};37var browser = await Puppeteer.LaunchAsync(options);38var page = await browser.NewPageAsync();

string

Using AI Code Generation

1{2    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",3    Args = new string[] { "--window-size=1920,1080" }4};5var browser = await Puppeteer.LaunchAsync(options);6var page = await browser.NewPageAsync();7await page.PdfAsync("google.pdf");8await browser.CloseAsync();9{10    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",11    Args = new string[] { "--window-size=1920,1080" }12};13var browser = await Puppeteer.LaunchAsync(options);14var page = await browser.NewPageAsync();15await page.PdfAsync("google.pdf");16await browser.CloseAsync();17{18    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",19    Args = new string[] { "--window-size=1920,1080" }20};21var browser = await Puppeteer.LaunchAsync(options);22var page = await browser.NewPageAsync();23await page.PdfAsync("google.pdf");24await browser.CloseAsync();25{26    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",27    Args = new string[] { "--window-size=1920,1080" }28};29var browser = await Puppeteer.LaunchAsync(options);30var page = await browser.NewPageAsync();31await page.PdfAsync("google.pdf");32await browser.CloseAsync();

string

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static void Main()7        {8            MainAsync().Wait();9        }10        static async Task MainAsync()11        {12            var browser = await Puppeteer.LaunchAsync(new LaunchOptions13            {14                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",15            });16            var page = await browser.NewPageAsync();17            await page.ScreenshotAsync("screenshot.png");18            await page.CloseAsync();19            await browser.CloseAsync();20        }21    }22}

string

Using AI Code Generation

1var options = new LaunchOptions();2options.ExecutablePath = "/usr/bin/chromium";3options.Headless = true;4options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };5await Puppeteer.LaunchAsync(options);6var options = new LaunchOptions();7options.ExecutablePath = "/usr/bin/chromium";8options.Headless = true;9options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };10await Puppeteer.LaunchAsync(options);11var options = new LaunchOptions();12options.ExecutablePath = "/usr/bin/chromium";13options.Headless = true;14options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };15await Puppeteer.LaunchAsync(options);16var options = new LaunchOptions();17options.ExecutablePath = "/usr/bin/chromium";18options.Headless = true;19options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };20await Puppeteer.LaunchAsync(options);21var options = new LaunchOptions();22options.ExecutablePath = "/usr/bin/chromium";23options.Headless = true;24options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };25await Puppeteer.LaunchAsync(options);26var options = new LaunchOptions();27options.ExecutablePath = "/usr/bin/chromium";28options.Headless = true;29options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };30await Puppeteer.LaunchAsync(options);31var options = new LaunchOptions();32options.ExecutablePath = "/usr/bin/chromium";33options.Headless = true;34options.Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" };35await Puppeteer.LaunchAsync(options);

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