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How to use HandleAsyncMessage method of PuppeteerSharp.Helpers.AsyncMessageQueue class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Helpers.AsyncMessageQueue.HandleAsyncMessage

AsyncMessageQueue.cs

Source:AsyncMessageQueue.cs

...30                throw new ObjectDisposedException(GetType().FullName);31            }32            if (!_enqueueAsyncMessages)33            {34                HandleAsyncMessage(callback, obj);35                return;36            }37            // Keep a ref to this task until it completes. If it can't finish by the time we dispose this queue,38            // then we'll find it and cancel it.39            lock (_pendingTasks)40            {41                _pendingTasks.Add(callback);42            }43            var task = Task.Run(() => HandleAsyncMessage(callback, obj));44            // Unhandled error handler45            task.ContinueWith(46                t =>47                {48                    _logger.LogError(t.Exception, "Failed to complete async handling of SendAsync for {callback}", callback.Method);49                    callback.TaskWrapper.TrySetException(t.Exception!); // t.Exception is available since this runs only on faulted50                },51                CancellationToken.None,52                TaskContinuationOptions.OnlyOnFaulted,53                TaskScheduler.Default);54            // Always remove from the queue when done, regardless of outcome.55            task.ContinueWith(56                _ =>57                {58                    lock (_pendingTasks)59                    {60                        _pendingTasks.Remove(callback);61                    }62                },63                TaskScheduler.Default);64        }65        public void Dispose()66        {67            if (_disposed)68            {69                return;70            }71            // Ensure all tasks are finished since we're disposing now. Any pending tasks will be canceled.72            MessageTask[] pendingTasks;73            lock (_pendingTasks)74            {75                pendingTasks = _pendingTasks.ToArray();76                _pendingTasks.Clear();77            }78            foreach (var pendingTask in pendingTasks)79            {80                pendingTask.TaskWrapper.TrySetCanceled();81            }82            _disposed = true;83        }84        private static void HandleAsyncMessage(MessageTask callback, ConnectionResponse obj)85        {86            if (obj.Error != null)87            {88                callback.TaskWrapper.TrySetException(new MessageException(callback, obj.Error));89            }90            else91            {92                callback.TaskWrapper.TrySetResult(obj.Result);93            }94        }95    }96}...

HandleAsyncMessage

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Helpers;4{5    {6        static async Task Main(string[] args)7        {8            var browserFetcher = new BrowserFetcher();9            await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);10            var browser = await Puppeteer.LaunchAsync(new LaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var queue = new AsyncMessageQueue();15            queue.HandleAsyncMessage("console", (message) =>16            {17                Console.WriteLine(message.Text);18            });19            queue.HandleAsyncMessage("exception", (message) =>20            {21                Console.WriteLine(message.Text);22            });23            queue.HandleAsyncMessage("pageerror", (message) =>24            {25                Console.WriteLine(message.Text);26            });27            queue.HandleAsyncMessage("requestfailed", (message) =>28            {29                Console.WriteLine(message.Text);30            });31            await page.SetContentAsync(@"<html>32            function test()33            {34                console.log('test');35                console.error('test');36                throw new Error('test');37            }38            <button onclick='test()'>Click me</button>39            </html>");

HandleAsyncMessage

Using AI Code Generation

1using PuppeteerSharp.Helpers;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });9            var page = await browser.NewPageAsync();10            var queue = new AsyncMessageQueue();11            page.Message += (sender, e) => queue.HandleAsyncMessage(e.Message);12            await page.EvaluateExpressionAsync(@"window.alert('Hello World!')");13            await queue.WaitForAsync("alert", "Hello World!");14            await browser.CloseAsync();15        }16    }17}

HandleAsyncMessage

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        public AsyncMessageQueue()7        {8            _queue = new System.Collections.Concurrent.ConcurrentQueue<Tuple<string, object>>();9            _task = Task.Run(async () =>10            {11                while (true)12                {13                    await Task.Delay(100);14                    while (_queue.TryDequeue(out Tuple<string, object> msg))15                    {16                        await HandleAsyncMessage(msg.Item1, msg.Item2);17                    }18                }19            });20        }21        private Task _task;22        private System.Collections.Concurrent.ConcurrentQueue<Tuple<string, object>> _queue;23        public void Enqueue(string message, object data)24        {25            _queue.Enqueue(new Tuple<string, object>(message, data));26        }27        public async Task HandleAsyncMessage(string message, object data)28        {29            await Task.Delay(1000);30            Console.WriteLine($"Received message: {message} with data: {data}");31        }32    }33}34using System;35using System.Threading.Tasks;36using PuppeteerSharp;37{38    {39        static async Task Main(string[] args)40        {41            var browser = await Puppeteer.LaunchAsync(new LaunchOptions42            {43                Args = new string[] { "--no-sandbox" }44            });45            var page = await browser.NewPageAsync();46            page.Console += (sender, e) => Console.WriteLine(e.Text);47            await page.EvaluateExpressionAsync("console.log('Hello from PuppeteerSharp')");48            await page.CloseAsync();49            await browser.CloseAsync();50        }51    }52}53using System;54using System.Threading.Tasks;55using PuppeteerSharp;56{57    {58        static async Task Main(string[] args)59        {60            var browser = await Puppeteer.LaunchAsync(new LaunchOptions61            {62                Args = new string[] { "--no-sandbox" }63            });64            var page = await browser.NewPageAsync();65            page.Console += (sender, e) => Console.WriteLine(e.Text);

HandleAsyncMessage

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Threading.Tasks;4using PuppeteerSharp.Helpers;5using PuppeteerSharp.Messaging;6using PuppeteerSharp.Tests.Attributes;7using Xunit;8using Xunit.Abstractions;9{10    [Collection(TestConstants.TestFixtureCollectionName)]11    {12        public PageEventsTests(ITestOutputHelper output) : base(output)13        {14        }15        [PuppeteerTest("page.spec.ts", "Page.Events.Console", "should work")]16        public async Task ShouldWork()17        {18            var messages = new List<string>();19            Page.Console += (sender, e) => messages.Add(e.Message.Text);20            await Page.GoToAsync(TestConstants.ServerUrl + "/consolelog.html");21            Assert.Equal(new[] { "yellow", "yellow", "yellow", "yellow", "yellow" }, messages);22        }23        [PuppeteerTest("page.spec.ts", "Page.Events.Console", "should work for different console API calls")]24        public async Task ShouldWorkForDifferentConsoleAPICalls()25        {26            var messages = new List<string>();27            Page.Console += (sender, e) => messages.Add(e.Message.Text);28            await Page.GoToAsync(TestConstants.ServerUrl + "/consolelog.html");29            Assert.Equal(new[] { "yellow", "yellow", "yellow", "yellow", "yellow" }, messages);30        }31        [PuppeteerTest("page.spec.ts", "Page.Events.Console", "should work for different console API calls")]32        public async Task ShouldWorkForDifferentConsoleAPICalls2()33        {34            var messages = new List<string>();35            Page.Console += (sender, e) => messages.Add(e.Message.Text);36            await Page.EvaluateExpressionAsync("console.timeStamp('calling console.timeStamp')");37            await Page.EvaluateExpressionAsync("console.log('calling console.log')");38            await Page.EvaluateExpressionAsync("console.warn('calling console.warn')");39            await Page.EvaluateExpressionAsync("console.error('calling console.error')");40            await Page.EvaluateExpressionAsync("console.dir('calling console.dir')");41            await Page.EvaluateExpressionAsync("console.trace('calling console.trace

HandleAsyncMessage

Using AI Code Generation

1var asyncMessageQueue = new AsyncMessageQueue(page);2asyncMessageQueue.HandleAsyncMessage("myMessage", async (message) =>3{4    var args = message.Data as JObject;5    var value = args.Value<int>("value");6    Console.WriteLine(value);7});8page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 1 }); }");9page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 2 }); }");10page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 3 }); }");11await asyncMessageQueue.WaitForEvent("myMessage", 3);12var asyncMessageQueue = new AsyncMessageQueue(page);13asyncMessageQueue.HandleAsyncMessage("myMessage", async (message) =>14{15    var args = message.Data as JObject;16    var value = args.Value<int>("value");17    Console.WriteLine(value);18});19var task1 = page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 1 }); }");20var task2 = page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 2 }); }");21var task3 = page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 3 }); }");22await Task.WhenAll(task1, task2, task3);23var asyncMessageQueue = new AsyncMessageQueue(page);24asyncMessageQueue.HandleAsyncMessage("myMessage", async (message) =>25{26    var args = message.Data as JObject;27    var value = args.Value<int>("value");28    Console.WriteLine(value);29});30await page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 1 }); }");31await page.EvaluateFunctionAsync("async () => { await window.__asyncMessageQueue.sendMessage('myMessage', { value: 2 });

HandleAsyncMessage

Using AI Code Generation

1var queue = new PuppeteerSharp.Helpers.AsyncMessageQueue();2queue.HandleAsyncMessage(async message => {3    Console.WriteLine($"Message received: {message}");4    return "I'm done";5});6queue.Post("Hello world");7queue.Post("Hello world again");8queue.Post("Hello world once more");9var result = await queue.PostAsync("Hello world async");10Console.WriteLine($"Result: {result}");11var queue = new PuppeteerSharp.Helpers.AsyncMessageQueue();12queue.HandleAsyncMessage(async message => {13    Console.WriteLine($"Message received: {message}");14    return "I'm done";15});16queue.Post("Hello world");17queue.Post("Hello world again");18queue.Post("Hello world once more");19var result = await queue.PostAsync("Hello world async");20Console.WriteLine($"Result: {result}");21var queue = new PuppeteerSharp.Helpers.AsyncMessageQueue();22queue.HandleAsyncMessage(async message => {23    Console.WriteLine($"Message received: {message}");24    return "I'm done";25});26queue.Post("Hello world");27queue.Post("Hello world again");28queue.Post("Hello world once more");29var result = await queue.PostAsync("Hello world async");30Console.WriteLine($"Result: {result}");31var queue = new PuppeteerSharp.Helpers.AsyncMessageQueue();32queue.HandleAsyncMessage(async message => {33    Console.WriteLine($"Message received: {message}");34    return "I'm done";35});36queue.Post("Hello world");37queue.Post("Hello world again");38queue.Post("Hello world once more");39var result = await queue.PostAsync("Hello world async");40Console.WriteLine($"Result: {result}");41var queue = new PuppeteerSharp.Helpers.AsyncMessageQueue();42queue.HandleAsyncMessage(async message => {

HandleAsyncMessage

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Helpers;4{5    {6        static void Main(string[] args)7        {8            Console.WriteLine("Hello World!");9            var queue = new AsyncMessageQueue<string>();10            queue.HandleAsyncMessage(async (msg) =>11            {12                Console.WriteLine($"Handling message {msg}");13                await Task.Delay(1000);14                Console.WriteLine($"Handled message {msg}");15            });16            queue.Enqueue("First message");17            queue.Enqueue("Second message");18            queue.Enqueue("Third message");19            queue.Enqueue("Fourth message");20            queue.Enqueue("Fifth message");21            queue.Enqueue("Sixth message");22            queue.Enqueue("Seventh message");23            queue.Enqueue("Eighth message");24            queue.Enqueue("Ninth message");25            queue.Enqueue("Tenth message");26            Console.WriteLine("All messages enqueued");27            Console.ReadLine();28        }29    }30}31You can also use the HandleAsyncMessage() method to handle messages asynchronously in a console application. You can call the HandleAsyncMessage() method in the Main() method of the console application. You can enqueue messages in the console application using the Enqueue() method of the MessageQueue class

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