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How to use GetUserAgentAsync method of PuppeteerSharp.Browser class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Browser.GetUserAgentAsync

BrowserUtils.cs

Source:BrowserUtils.cs

...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) {...

ChromePersistentClient.cs

Source:ChromePersistentClient.cs

...67            page.WaitForNavigationAsync(n).Wait();68        }69        public IEnumerable<KeyValuePair<string, string>> PagesContent()70        {71            //var userAgent = this.browser.GetUserAgentAsync().Result;72            //var version = this.browser.GetVersionAsync().Result;73            //var last = this.browser.Targets().ToList().Last().PageAsync().Result;74            var pages = this.browser.PagesAsync().Result;75            foreach (var item in pages)76            {77                yield return new KeyValuePair<string, string>(item.Url, item.GetContentAsync().Result);78            }79        }80        public async Task<Newtonsoft.Json.Linq.JToken> ListCookiesAsync()81        {82            var cookies = await page.GetCookiesAsync(url);83            var obj = cookies.Select(s => new84            {85                Domain = s.Domain,...

PuppeteerSharpBrowserAdapter.cs

Source:PuppeteerSharpBrowserAdapter.cs

...69            // }70            71            _browser.Dispose();72        }73        public Task<string> GetUserAgentAsync() => _browser.GetUserAgentAsync();74        public IEnumerable<IPageAdapter> GetPageAdapters() => _pageAdapters;75    }76}...

VkBrwCommunity.cs

Source:VkBrwCommunity.cs

...41                Height = 768,42                Width = 102443            });44            string ver = await browser.GetVersionAsync();45            string userAgent = await browser.GetUserAgentAsync();46            await communityPage.SetUserAgentAsync("Mozilla / 5.0(Windows NT 10.0; Win64; x64) AppleWebKit / 537.36(KHTML, like Gecko) Chrome / 74.0.3723.0 Safari / 537.36");47            48            await communityPage.GoToAsync(CommunityUrl);49            ElementHandle followersLoaded = await communityPage.WaitForSelectorAsync("#public_followers");50        }51    }52}...

BrowserAdapterTests.cs

Source:BrowserAdapterTests.cs

...12        [TestMethod]13        public async Task Returns_String_UserAgent()14        {15            using var adapter = new PuppeteerSharpBrowserAdapter(1);16            var result = await adapter.GetUserAgentAsync();17            Assert.IsNotNull(result);18            Assert.AreNotEqual(0, result.Length);19        }20        [TestMethod]21        public void Returns_PageAdapterList_Equal_In_Length_To_Count_Parameter()22        {23            const int PAGE_COUNT = 2;24            25            using var adapter = new PuppeteerSharpBrowserAdapter(PAGE_COUNT);26            var result = adapter.GetPageAdapters();27            28            Assert.AreEqual(PAGE_COUNT, result.Count());29        }30        [TestMethod]...

WebBrowser.cs

Source:WebBrowser.cs

...18            IWebPage page = new WebPage(await _browser.NewPageAsync());19            20            return page;21        }22        public async Task<string> GetUserAgentAsync()23        {24            return await _browser.GetUserAgentAsync();25        }26    }27}...

AnonymizeUaPlugin.cs

Source:AnonymizeUaPlugin.cs

...15            _customAction = uaAction;16        }17        public override async Task OnPageCreated(Page page)18        {19            var ua = await page.Browser.GetUserAgentAsync();20            ua = ua.Replace("HeadlessChrome", "Chrome");21            var regex = new Regex(@"/\(([^)]+)\)/");22            ua = regex.Replace(ua, "(Windows NT 10.0; Win64; x64)");23            if (_customAction != null)24                ua = _customAction(ua);25            await page.SetUserAgentAsync(ua);26        }27    }28}...

UserAgentTests.cs

Source:UserAgentTests.cs

...11        }12        [Fact]13        public async Task ShouldIncludeWebKit()14        {15            var userAgent = await Browser.GetUserAgentAsync();16            Assert.NotEmpty(userAgent);17            Assert.Contains("WebKit", userAgent);18        }19    }20}...

GetUserAgentAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10                {11                }12            });13            var page = await browser.NewPageAsync();14            var userAgent = await page.EvaluateExpressionAsync<string>("navigator.userAgent");15            Console.WriteLine(userAgent);16            await browser.CloseAsync();17        }18    }19}

GetUserAgentAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3    Args = new string[] { "--no-sandbox" }4});5var page = await browser.NewPageAsync();6var userAgent = await page.EvaluateFunctionAsync<string>("() => navigator.userAgent");7Console.WriteLine(userAgent);8await browser.CloseAsync();9Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/80.0.3987.0 Safari/537.3610public Task SetUserAgentAsync(string userAgent);11var browser = await Puppeteer.LaunchAsync(new LaunchOptions12{13    Args = new string[] { "--no-sandbox" }14});15var page = await browser.NewPageAsync();16await page.SetUserAgentAsync("Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/80.0.3987.0 Safari/537.36");17var userAgent = await page.EvaluateFunctionAsync<string>("() => navigator.userAgent");18Console.WriteLine(userAgent);19await browser.CloseAsync();20Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/80.0.3987.0 Safari/537.36

GetUserAgentAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10                Args = new string[] { "--start-maximized" }11            });12            var page = await browser.NewPageAsync();13            var userAgent = await browser.GetUserAgentAsync();14            Console.WriteLine(userAgent);15            await browser.CloseAsync();16        }17    }18}19Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36

GetUserAgentAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });2var page = await browser.NewPageAsync();3await page.WaitForSelectorAsync("#detected_value");4var userAgent = await page.EvaluateExpressionAsync<string>("document.querySelector('#detected_value').textContent");5Console.WriteLine(userAgent);6await browser.CloseAsync();7PuppeteerSharp.Browser.GetUserAgentAsync() method8var userAgent = await browser.GetUserAgentAsync();9using System;10using System.Threading.Tasks;11using PuppeteerSharp;12{13    {14        static async Task Main(string[] args)15        {16            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });17            var page = await browser.NewPageAsync();18            await page.WaitForSelectorAsync("#detected_value");19            var userAgent = await browser.GetUserAgentAsync();20            Console.WriteLine(userAgent);21            await browser.CloseAsync();22        }23    }24}25Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/91.0.4472.0 Safari/537.36

GetUserAgentAsync

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            });12            var page = await browser.NewPageAsync();13            string userAgent = await browser.GetUserAgentAsync();14            Console.WriteLine(userAgent);15            await browser.CloseAsync();16        }17    }18}19Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/78.0.3882.0 Safari/537.3620using System;21using System.Threading.Tasks;22using PuppeteerSharp;23{24    {25        static async Task Main(string[] args)26        {27            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);28            var browser = await Puppeteer.LaunchAsync(new LaunchOptions29            {30            });31            var page = await browser.NewPageAsync();32            string userAgent = await page.GetUserAgentAsync();33            Console.WriteLine(userAgent);34            await browser.CloseAsync();35        }36    }37}38Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/78.0.3882.0 Safari/537.3639using System;40using System.Threading.Tasks;41using PuppeteerSharp;42{43    {44        static async Task Main(string[] args)45        {46            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);47            var browser = await Puppeteer.LaunchAsync(new LaunchOptions48            {49            });50            var page = await browser.NewPageAsync();51            string userAgent = await page.MainFrame.GetUserAgentAsync();52            Console.WriteLine(userAgent);53            await browser.CloseAsync();54        }55    }56}57Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like

GetUserAgentAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });8            var page = await browser.NewPageAsync();9            var userAgent = await browser.GetUserAgentAsync();10            Console.WriteLine(userAgent);11            await browser.CloseAsync();12        }13    }14}15Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/77.0.3833.0 Saf

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