Test your AI Agents with the all-new Agent to Agent Testing Platform.Learn More

How to use HeaderValueAsync method of Microsoft.Playwright.Core.Request class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.Request.HeaderValueAsync

Crawler.cs

Source:Crawler.cs

...240                return null;241            }242243            var pageUri = await GetCanonicalUrl(page);244            var contentType = await response.HeaderValueAsync("content-type");245            var pageData = new PageData(pageUri);246247            if (IsMimeTypeOneOf(contentType, "application/atom+xml", "application/xml"))248            {249                try250                {251                    var responseContent = await response.TextAsync();252                    var document = XDocument.Parse(responseContent);253254                    var nsmgr = new XmlNamespaceManager(new NameTable());255                    nsmgr.AddNamespace("atom", "http://www.w3.org/2005/Atom");256257                    foreach (var link in document.XPathSelectElements("/atom:feed/atom:entry/atom:link[@rel='alternate']", nsmgr))258                    {
...

PageNetworkRequestTest.cs

Source:PageNetworkRequestTest.cs

...291    })292");293            await Task.WhenAll(requestTask, evalTask);294            var req = requestTask.Result;295            Assert.AreEqual("value-a, value-a-1, value-a-2", await req.HeaderValueAsync("header-a"));296            Assert.IsNull(await req.HeaderValueAsync("not-there"));297        }298    }299}...

PageNetworkResponseTests.cs

Source:PageNetworkResponseTests.cs

...196            var response = responseTask.Result;197            var resultedHeaders = (await response.HeadersArrayAsync()).Where(x => x.Name.ToLower() == "set-cookie");198            var values = resultedHeaders.Select(x => x.Value).ToArray();199            CollectionAssert.AreEqual(new string[] { "a=b", "c=d" }, values);200            Assert.IsNull(await response.HeaderValueAsync("not-there"));201            Assert.AreEqual("a=b\nc=d", await response.HeaderValueAsync("set-cookie"));202            Assert.AreEqual(new string[] { "a=b", "c=d" }, (await response.HeaderValuesAsync("set-cookie")).ToArray());203        }204        [PlaywrightTest("page-network-response.spec.ts", "should behave the same way for headers and allHeaders")]205        [Skip(SkipAttribute.Targets.Webkit | SkipAttribute.Targets.Windows)] // libcurl does not support non-set-cookie multivalue headers206        public async Task ShouldBehaveTheSameWayForHeadersAndAllHeaders()207        {208            Server.SetRoute("/headers", async ctx =>209            {210                if (!TestConstants.IsChromium)211                {212                    ctx.Response.Headers.Append("Set-Cookie", "a=b");213                    ctx.Response.Headers.Append("Set-Cookie", "c=d");214                }215                ctx.Response.Headers.Append("Name-A", "v1");...

Request.cs

Source:Request.cs

...105        public async Task<Dictionary<string, string>> AllHeadersAsync()106            => (await GetRawHeadersAsync().ConfigureAwait(false)).Headers;107        public async Task<IReadOnlyList<Header>> HeadersArrayAsync()108            => (await GetRawHeadersAsync().ConfigureAwait(false)).HeadersArray;109        public async Task<string> HeaderValueAsync(string name)110            => (await GetRawHeadersAsync().ConfigureAwait(false)).Get(name);111        private Task<RawHeaders> GetRawHeadersAsync()112        {113            if (_rawHeadersTask == null)114            {115                _rawHeadersTask = GetRawHeadersTaskAsync();116            }117            return _rawHeadersTask;118        }119        private async Task<RawHeaders> GetRawHeadersTaskAsync()120        {121            var headers = await _channel.GetRawRequestHeadersAsync().ConfigureAwait(false);122            return new(headers);123        }...

Response.cs

Source:Response.cs

...62        public Task<byte[]> BodyAsync() => _channel.GetBodyAsync();63        public Task<string> FinishedAsync() => _finishedTask.Task;64        public async Task<IReadOnlyList<Header>> HeadersArrayAsync()65            => (await GetRawHeadersAsync().ConfigureAwait(false)).HeadersArray;66        public async Task<string> HeaderValueAsync(string name)67            => (await GetRawHeadersAsync().ConfigureAwait(false)).Get(name);68        public async Task<IReadOnlyList<string>> HeaderValuesAsync(string name)69            => (await GetRawHeadersAsync().ConfigureAwait(false)).GetAll(name);70        public async Task<JsonElement?> JsonAsync()71        {72            byte[] content = await BodyAsync().ConfigureAwait(false);73            return JsonDocument.Parse(content).RootElement;74        }75        public Task<ResponseSecurityDetailsResult> SecurityDetailsAsync() => _channel.SecurityDetailsAsync();76        public Task<ResponseServerAddrResult> ServerAddrAsync() => _channel.ServerAddrAsync();77        public async Task<string> TextAsync()78        {79            byte[] content = await BodyAsync().ConfigureAwait(false);80            return Encoding.UTF8.GetString(content);...

HeaderValueAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var context = await browser.NewContextAsync();13            var page = await context.NewPageAsync();14            await page.ScreenshotAsync("google.png");15            var request = await page.WaitForRequestAsync("**/*");16            var requestUrl = request.Url;17            var requestHeaders = request.Headers;18            var requestHeaderValue = await request.HeaderValueAsync("accept");19            Console.WriteLine(requestUrl);20            Console.WriteLine(requestHeaders);21            Console.WriteLine(requestHeaderValue);22        }23    }24}25{accept=text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9,accept-encoding=gzip, deflate, br,accept-language=en-US,en;q=0.9,accept-ranges=none,access-control-allow-credentials=false,access-control-allow-headers=content-type,access-control-allow-methods=GET,POST,OPTIONS,access-control-allow-origin=*,access-control-expose-headers=*,access-control-max-age=0,cache-control=no-cache,connection=keep-alive,content-encoding=gzip,content-length=0,content-type=text/html;charset=UTF-8,date=Thu, 11 Feb 2021 15:15:21 GMT,expires=Thu, 01 Jan 1970 00:00:00 GMT,pragma=no-cache,server=gws,transfer-encoding=chunked,vary=Accept-Encoding,x-frame-options=SAMEORIGIN,x-xss-protection=026accept-language=en-US,en;q=0.9

HeaderValueAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Core;5{6    {7        static async Task Main(string[] args)8        {9            using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var request = await page.WaitForRequestAsync("**/complete/search");15            string value = await request.HeaderValueAsync("accept");16            Console.WriteLine(value);17        }18    }19}20text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.921using System;22using System.Threading.Tasks;23using Microsoft.Playwright;24using Microsoft.Playwright.Core;25{26    {27        static async Task Main(string[] args)28        {29            using var playwright = await Playwright.CreateAsync();30            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions31            {32            });33            var page = await browser.NewPageAsync();34            var request = await page.WaitForRequestAsync("**/complete/search");35            var headers = await request.HeadersAsync();36            foreach (var item in headers)37            {38                Console.WriteLine(item.Key + " : " + item.Value);39            }40        }41    }42}43accept : text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.944accept-language : en-US,en;q=0.9

HeaderValueAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            await using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var context = await browser.NewContextAsync();13            var page = await context.NewPageAsync();14            {15            });16            var request = await page.WaitForRequestAsync("**/complete/search?**");17            var headerValue = await request.HeaderValueAsync("Referer");18            Console.WriteLine(headerValue);19        }20    }21}

HeaderValueAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions10            {11            });12            var context = await browser.NewContextAsync(new BrowserNewContextOptions13            {14            });15            var page = await context.NewPageAsync();16            var request = await page.WaitForRequestAsync("**/*");17            Console.WriteLine(await request.HeaderValueAsync("content-type"));18        }19    }20}

HeaderValueAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });10            var context = await browser.NewContextAsync();11            var page = await context.NewPageAsync();12            page.Request += async (sender, e) =>13            {14                var headerValue = await e.Request.HeaderValueAsync("Accept-Encoding");15                Console.WriteLine(headerValue);16            };17        }18    }19}20using System;21using System.Threading.Tasks;22using Microsoft.Playwright;23{24    {25        static async Task Main(string[] args)26        {27            using var playwright = await Playwright.CreateAsync();28            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });29            var context = await browser.NewContextAsync();30            var page = await context.NewPageAsync();31            page.Request += async (sender, e) =>32            {33                var headerValue = await e.Request.HeaderValuesAsync("Accept-Encoding");34                Console.WriteLine(headerValue);35            };36        }37    }38}39using System;40using System.Threading.Tasks;41using Microsoft.Playwright;42{43    {44        static async Task Main(string[] args)45        {46            using var playwright = await Playwright.CreateAsync();47            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });48            var context = await browser.NewContextAsync();49            var page = await context.NewPageAsync();

HeaderValueAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2await page.ClickAsync("text=Images");3var request = await page.WaitForRequestAsync("**/*");4var headerValue = await request.HeaderValueAsync("content-type");5Console.WriteLine(headerValue);6await browser.CloseAsync();7var page = await browser.NewPageAsync();8await page.ClickAsync("text=Images");9var request = await page.WaitForRequestAsync("**/*");10var headers = await request.HeadersAsync();11foreach (var header in headers)12{13    Console.WriteLine($"{header.Key} : {header.Value}");14}15await browser.CloseAsync();16var page = await browser.NewPageAsync();17await page.ClickAsync("text=Images");18var request = await page.WaitForRequestAsync("**/*");19var postData = await request.PostDataAsync();20Console.WriteLine(postData);21await browser.CloseAsync();22var page = await browser.NewPageAsync();23await page.ClickAsync("text=Images");24var request = await page.WaitForRequestAsync("**/*");25var redirectedFrom = await request.RedirectedFromAsync();26Console.WriteLine(redirectedFrom);27await browser.CloseAsync();28var page = await browser.NewPageAsync();29await page.ClickAsync("text=Images");30var request = await page.WaitForRequestAsync("**/*");31var redirectedTo = await request.RedirectedToAsync();32Console.WriteLine(redirectedTo);33await browser.CloseAsync();34var page = await browser.NewPageAsync();35await page.ClickAsync("text=Images");36var request = await page.WaitForRequestAsync("**/*");37var response = await request.ResponseAsync();38Console.WriteLine(response);

HeaderValueAsync

Using AI Code Generation

1var headerValue = await request.HeaderValueAsync("Accept");2Console.WriteLine("Header value: " + headerValue);3var headerValue = await response.HeaderValueAsync("Accept");4Console.WriteLine("Header value: " + headerValue);5var headerValue = await route.HeaderValueAsync("Accept");6Console.WriteLine("Header value: " + headerValue);7var headerValue = await frame.HeaderValueAsync("Accept");8Console.WriteLine("Header value: " + headerValue);9var headerValue = await elementHandle.HeaderValueAsync("Accept");10Console.WriteLine("Header value: " + headerValue);11var jSHandle = await page.EvaluateHandleAsync("() => document.body");12var headerValue = await jSHandle.HeaderValueAsync("Accept");13Console.WriteLine("Header value: " + headerValue);14var headerValue = await page.HeaderValueAsync("Accept");15Console.WriteLine("Header value: " + headerValue);16var headerValue = await browserContext.HeaderValueAsync("Accept");17Console.WriteLine("Header value: " + headerValue);18var headerValue = await browser.HeaderValueAsync("Accept");19Console.WriteLine("Header value: " + headerValue);20var headerValue = await playwright.HeaderValueAsync("Accept");21Console.WriteLine("Header value: " + headerValue);

HeaderValueAsync

Using AI Code Generation

1var contentType = await request.HeaderValueAsync("content-type");2Console.WriteLine(contentType);3var headers = await request.HeadersAsync();4foreach (var header in headers)5{6    Console.WriteLine($"{header.Key} : {header.Value}");7}8var headers = await request.HeadersArrayAsync();9foreach (var header in headers)10{11    Console.WriteLine($"{header.Name} : {header.Value}");12}13var headers = await request.HeadersHashAsync();14foreach (var header in headers)15{16    Console.WriteLine($"{header.Key} : {header.Value}");17}18var headers = await request.HeadersObjectAsync();19foreach (var header in headers)20{21    Console.WriteLine($"{header.Key} : {header.Value}");22}23var headers = await request.HeadersTextAsync();24Console.WriteLine(headers);25var isNavigationRequest = await request.IsNavigationRequestAsync();26Console.WriteLine(isNavigationRequest);

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.