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

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

Connection.cs

Source:Connection.cs

...146                    $"Protocol error({response.Method}): Target closed.",147                    closeReason));148            }149            _callbacks.Clear();150            MessageQueue.Dispose();151        }152        internal static Connection FromSession(CDPSession session) => session.Connection;153        internal CDPSession GetSession(string sessionId) => _sessions.GetValueOrDefault(sessionId);154        internal Task<CDPSession> GetSessionAsync(string sessionId) => _asyncSessions.GetItemAsync(sessionId);155        private async void Transport_MessageReceived(object sender, MessageReceivedEventArgs e)156            => await _callbackQueue.Enqueue(() => ProcessMessage(e)).ConfigureAwait(false);157        private async Task ProcessMessage(MessageReceivedEventArgs e)158        {159            try160            {161                var response = e.Message;162                ConnectionResponse obj = null;163                if (response.Length > 0 && Delay > 0)164                {165                    await Task.Delay(Delay).ConfigureAwait(false);166                }167                try168                {169                    obj = JsonConvert.DeserializeObject<ConnectionResponse>(response, JsonHelper.DefaultJsonSerializerSettings);170                }171                catch (JsonException exc)172                {173                    _logger.LogError(exc, "Failed to deserialize response", response);174                    return;175                }176                _logger.LogTrace("â Receive {Message}", response);177                ProcessIncomingMessage(obj);178            }179            catch (Exception ex)180            {181                var message = $"Connection failed to process {e.Message}. {ex.Message}. {ex.StackTrace}";182                _logger.LogError(ex, message);183                Close(message);184            }185        }186        private void ProcessIncomingMessage(ConnectionResponse obj)187        {188            var method = obj.Method;189            var param = obj.Params?.ToObject<ConnectionResponseParams>();190            if (method == "Target.attachedToTarget")191            {192                var sessionId = param.SessionId;193                var session = new CDPSession(this, param.TargetInfo.Type, sessionId);194                _asyncSessions.AddItem(sessionId, session);195                SessionAttached?.Invoke(this, new SessionAttachedEventArgs { Session = session });196                if (obj.SessionId != null && _sessions.TryGetValue(obj.SessionId, out var parentSession))197                {198                    parentSession.OnSessionAttached(session);199                }200            }201            else if (method == "Target.detachedFromTarget")202            {203                var sessionId = param.SessionId;204                if (_sessions.TryRemove(sessionId, out var session) && !session.IsClosed)205                {206                    session.Close("Target.detachedFromTarget");207                }208            }209            if (!string.IsNullOrEmpty(obj.SessionId))210            {211                var session = GetSession(obj.SessionId);212                session?.OnMessage(obj);213            }214            else if (obj.Id.HasValue)215            {216                // If we get the object we are waiting for we return if217                // if not we add this to the list, sooner or later some one will come for it218                if (_callbacks.TryRemove(obj.Id.Value, out var callback))219                {220                    MessageQueue.Enqueue(callback, obj);221                }222            }223            else224            {225                MessageReceived?.Invoke(this, new MessageEventArgs226                {227                    MessageID = method,228                    MessageData = obj.Params229                });230            }231        }232        private void Transport_Closed(object sender, TransportClosedEventArgs e) => Close(e.CloseReason);233        internal static async Task<Connection> Create(string url, IConnectionOptions connectionOptions, ILoggerFactory loggerFactory = null, CancellationToken cancellationToken = default)234        {235#pragma warning disable 618236            var transport = connectionOptions.Transport;237#pragma warning restore 618238            if (transport == null)239            {240                var transportFactory = connectionOptions.TransportFactory ?? WebSocketTransport.DefaultTransportFactory;241                transport = await transportFactory(new Uri(url), connectionOptions, cancellationToken).ConfigureAwait(false);242            }243            return new Connection(url, connectionOptions.SlowMo, connectionOptions.EnqueueAsyncMessages, transport, loggerFactory);244        }245        /// <inheritdoc />246        public void Dispose()247        {248            Dispose(true);249            GC.SuppressFinalize(this);250        }251        /// <summary>252        /// Releases all resource used by the <see cref="Connection"/> object.253        /// It will raise the <see cref="Disconnected"/> event and dispose <see cref="Transport"/>.254        /// </summary>255        /// <remarks>Call <see cref="Dispose()"/> when you are finished using the <see cref="Connection"/>. The256        /// <see cref="Dispose()"/> method leaves the <see cref="Connection"/> in an unusable state.257        /// After calling <see cref="Dispose()"/>, you must release all references to the258        /// <see cref="Connection"/> so the garbage collector can reclaim the memory that the259        /// <see cref="Connection"/> was occupying.</remarks>260        /// <param name="disposing">Indicates whether disposal was initiated by <see cref="Dispose()"/> operation.</param>261        protected virtual void Dispose(bool disposing)262        {263            Close("Connection disposed");264            Transport.MessageReceived -= Transport_MessageReceived;265            Transport.Closed -= Transport_Closed;266            Transport.Dispose();267            _callbackQueue.Dispose();268        }269    }270}...

AsyncMessageQueue.cs

Source:AsyncMessageQueue.cs

...26        public void Enqueue(MessageTask callback, ConnectionResponse obj)27        {28            if (_disposed)29            {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            {...

Dispose

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 browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10                Args = new string[] { "--no-sandbox" }11            });12            var page = await browser.NewPageAsync();13            var queue = new AsyncMessageQueue();14            queue.OnMessage += (message) =>15            {16                Console.WriteLine(message);17            };

Dispose

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp.Helpers;7{8    {9        public AsyncMessageQueue()10        {11            _queue = new Queue<TaskCompletionSource<object>>();12        }13        public void Dispose()14        {15            lock (_queue)16            {17                while (_queue.Count > 0)18                {19                    _queue.Dequeue().SetException(new ObjectDisposedException("AsyncMessageQueue"));20                }21            }22        }23        public Task Enqueue()24        {25            var tcs = new TaskCompletionSource<object>();26            lock (_queue)27            {28                _queue.Enqueue(tcs);29            }30            return tcs.Task;31        }32        public void Dequeue()33        {34            TaskCompletionSource<object> tcs = null;35            lock (_queue)36            {37                if (_queue.Count > 0)38                {39                    tcs = _queue.Dequeue();40                }41            }42            if (tcs != null)43            {44                tcs.SetResult(null);45            }46        }47        public void Clear()48        {49            lock (_queue)50            {51                _queue.Clear();52            }53        }54        private readonly Queue<TaskCompletionSource<object>> _queue;55    }56}57using System;58using System.Collections.Generic;59using System.Linq;60using System.Text;61using System.Threading.Tasks;62using PuppeteerSharp.Helpers;63{64    {65        public AsyncMessageQueue()66        {67            _queue = new Queue<TaskCompletionSource<object>>();68        }69        public void Dispose()70        {71            lock (_queue)72            {73                while (_queue.Count > 0)74                {75                    _queue.Dequeue().SetException(new ObjectDisposedException("AsyncMessageQueue"));76                }77            }78        }79        public Task Enqueue()80        {81            var tcs = new TaskCompletionSource<object>();82            lock (_queue)83            {84                _queue.Enqueue(tcs);85            }86            return tcs.Task;87        }88        public void Dequeue()89        {90            TaskCompletionSource<object> tcs = null;91            lock (_queue)92            {93                if (_queue.Count > 0)94                {95                    tcs = _queue.Dequeue();96                }97            }

Dispose

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 queue = new AsyncMessageQueue();9            queue.Enqueue(async () => await Task.Delay(1000));10            queue.Enqueue(async () => await Task.Delay(1000));11            queue.Enqueue(async () => await Task.Delay(1000));12            queue.Dispose();13            Console.WriteLine("Hello World!");14        }15    }16}

Dispose

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp.Helpers;7using PuppeteerSharp;8{9    {10        private readonly List<Func<Task>> _queue = new List<Func<Task>>();11        private readonly object _syncRoot = new object();12        private bool _isRunning;13        public void Enqueue(Func<Task> task)14        {15            lock (_syncRoot)16            {17                _queue.Add(task);18                if (!_isRunning)19                {20                    _isRunning = true;21                    Task.Run(() => RunQueue());22                }23            }24        }25        private async Task RunQueue()26        {27            while (true)28            {29                Func<Task> task = null;30                lock (_syncRoot)31                {32                    if (_queue.Any())33                    {34                        task = _queue.First();35                        _queue.RemoveAt(0);36                    }37                    {38                        _isRunning = false;39                        break;40                    }41                }42                await task();43            }44        }45        public void Dispose()46        {47            lock (_syncRoot)48            {49                _queue.Clear();50            }51        }52    }53}54using PuppeteerSharp.Helpers;55using PuppeteerSharp;56using System;57using System.Collections.Generic;58using System.Linq;59using System.Text;60using System.Threading.Tasks;61{62    {63        static void Main(string[] args)64        {65            AsyncMessageQueue asyncMessageQueue = new AsyncMessageQueue();66            asyncMessageQueue.Enqueue(Check);67            asyncMessageQueue.Dispose();68            Console.ReadLine();69        }70        static async Task Check()71        {72            Console.WriteLine("Hello");73        }74    }75}76Task.Run() vs Task.Factory.StartNew() vs Thread77Task.Run() vs Task.Factory.StartNew() vs Thread78Task.Run() vs Task.Factory.StartNew() vs Thread

Dispose

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Helpers;4using PuppeteerSharp.Messaging;5{6    {7        public static async Task Main(string[] args)8        {9            var browserFetcher = new BrowserFetcher();10            var revisionInfo = await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);11            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false, ExecutablePath = revisionInfo.ExecutablePath });12            var page = await browser.NewPageAsync();13            await page.WaitForSelectorAsync("input[name='q']");14            var messageQueue = new AsyncMessageQueue<ConsoleAPICalledResponse>();15            page.Console += (sender, e) => messageQueue.Enqueue(e.Message);16            await page.EvaluateExpressionAsync("console.log('hello')");17            var message = await messageQueue.DequeueAsync();18            Console.WriteLine(message.Args[0].Value);19        }20    }21}22using System;23using System.Threading.Tasks;24using PuppeteerSharp.Helpers;25using PuppeteerSharp.Messaging;26{27    {28        public static async Task Main(string[] args)29        {30            var browserFetcher = new BrowserFetcher();31            var revisionInfo = await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);32            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false, ExecutablePath = revisionInfo.ExecutablePath });33            var page = await browser.NewPageAsync();34            await page.WaitForSelectorAsync("input[name='q']");35            var messageQueue = new AsyncQueue<ConsoleAPICalledResponse>();36            page.Console += (sender, e) => messageQueue.Enqueue(e.Message);37            await page.EvaluateExpressionAsync("console.log('hello')");38            var message = await messageQueue.DequeueAsync();39            Console.WriteLine(message.Args[0].Value);40        }41    }42}43using System;44using System.Threading.Tasks;45using PuppeteerSharp.Helpers;46using PuppeteerSharp.Messaging;47{48    {49        public static async Task Main(string[] args)50        {

Dispose

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp.Helpers;7{8    {9        private readonly List<string> _messages = new List<string>();10        private readonly TaskCompletionSource<bool> _completionSource = new TaskCompletionSource<bool>();11        public void Add(string message)12        {13            _messages.Add(message);14            _completionSource.SetResult(true);15        }16        public async Task<string> GetNextMessageAsync()17        {18            if (_messages.Count > 0)19            {20                var message = _messages[0];21                _messages.RemoveAt(0);22                return message;23            }24            await _completionSource.Task;25            _completionSource.SetResult(true);26            return await GetNextMessageAsync();27        }28        public void Dispose()29        {30            _completionSource.SetCanceled();31        }32    }33}34using System;35using System.Collections.Generic;36using System.Linq;37using System.Text;38using System.Threading.Tasks;39using PuppeteerSharp.Helpers;40{41    {42        static async Task Main(string[] args)43        {44            var queue = new AsyncMessageQueue();45            var task1 = Task.Run(async () =>46            {47                for (var i = 0; i < 10; i++)48                {49                    await Task.Delay(1000);50                    queue.Add($"Message {i}");51                }52            });53            var task2 = Task.Run(async () =>54            {55                for (var i = 0; i < 10; i++)56                {57                    var message = await queue.GetNextMessageAsync();58                    Console.WriteLine(message);59                }60            });61            await Task.WhenAll(task1, task2);62        }63    }64}65using System;66using System.Collections.Generic;67using System.Linq;68using System.Text;69using System.Threading.Tasks;70using PuppeteerSharp.Helpers;71{

Dispose

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp.Helpers;4{5    {6        public static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync();9            var page = await browser.NewPageAsync();10            var title = await page.EvaluateExpressionAsync<string>("document.title");11            Console.WriteLine(title);12            await page.ScreenshotAsync("example.png");13            await browser.CloseAsync();14            await page.DisposeAsync();15        }16    }17}18using System;19using System.Threading.Tasks;20using PuppeteerSharp.Helpers;21{22    {23        public static async Task Main(string[] args)24        {25            var browser = await Puppeteer.LaunchAsync();26            var page = await browser.NewPageAsync();27            var title = await page.EvaluateExpressionAsync<string>("document.title");28            Console.WriteLine(title);29            await page.ScreenshotAsync("example.png");30            await browser.CloseAsync();31            page.Dispose();32        }33    }34}35using System;36using System.Threading.Tasks;37using PuppeteerSharp.Helpers;38{39    {40        public static async Task Main(string[] args)41        {42            var browser = await Puppeteer.LaunchAsync();43            var page = await browser.NewPageAsync();44            var title = await page.EvaluateExpressionAsync<string>("document.title");45            Console.WriteLine(title);46            await page.ScreenshotAsync("example.png");47            await browser.CloseAsync();48            page.DisposeAsync().GetAwaiter().GetResult();49        }50    }51}52using System;53using System.Threading.Tasks;54using PuppeteerSharp.Helpers;55{56    {57        public static async Task Main(string[] args)

Dispose

Using AI Code Generation

1using PuppeteerSharp.Helpers;2using System;3{4    {5        public AsyncMessageQueue()6        {7            _queue = new Queue();8            _queueLock = new object();9        }10        public void Enqueue(Action action)11        {12            lock (_queueLock)13            {14                _queue.Enqueue(action);15            }16        }17        public async Task<bool> DequeueAsync()18        {19            Action action;20            lock (_queueLock)21            {22                if (_queue.Count == 0)23                {24                    return false;25                }26                action = _queue.Dequeue();27            }28            await action.Invoke();29            return true;30        }31        public void Dispose()32        {33            Enqueue(() => { });34        }35        private readonly Queue _queue;36        private readonly object _queueLock;37    }38}39using PuppeteerSharp.Helpers;40using System;41using System.Threading.Tasks;42{43    {44        public AsyncMessageQueue()45        {46            _queue = new Queue();47            _queueLock = new object();48        }49        public void Enqueue(Action action)50        {51            lock (_queueLock)52            {53                _queue.Enqueue(action);54            }55        }56        public async Task<bool> DequeueAsync()57        {58            Action action;59            lock (_queueLock)60            {61                if (_queue.Count == 0)62                {63                    return false;64                }65                action = _queue.Dequeue();66            }67            await action.Invoke();68            return true;69        }70        public void Dispose()71        {72            Enqueue(() => { });73        }74        private readonly Queue _queue;75        private readonly object _queueLock;76    }77}78using PuppeteerSharp.Helpers;79using System;80using System.Threading.Tasks;81{82    {83        public AsyncMessageQueue()84        {85            _queue = new Queue();86            _queueLock = new object();87        }88        public void Enqueue(Action action)89        {90            lock (_queueLock)91            {92                _queue.Enqueue(action);93            }94        }95        public async Task<bool> DequeueAsync()96        {97            Action action;

Dispose

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using PuppeteerSharp.Helpers;7{8    {9        private readonly Queue<TaskCompletionSource<object>> _queue = new Queue<TaskCompletionSource<object>>();10        private readonly object _lock = new object();11        public Task<object> Enqueue()12        {13            lock (_lock)14            {15                var tcs = new TaskCompletionSource<object>();16                _queue.Enqueue(tcs);17                return tcs.Task;18            }19        }20        public void Dequeue(object value)21        {22            lock (_lock)23            {24                var tcs = _queue.Dequeue();25                tcs.SetResult(value);26            }27        }28        public void Dispose()29        {30            lock (_lock)31            {32                while (_queue.Count > 0)33                {34                    Dequeue(null);35                }36            }37        }38    }39}40using System;41using System.Collections.Generic;42using System.Linq;43using System.Text;44using System.Threading.Tasks;45using PuppeteerSharp.Helpers;46{47    {48        private readonly Queue<TaskCompletionSource<object>> _queue = new Queue<TaskCompletionSource<object>>();49        private readonly object _lock = new object();50        public Task<object> Enqueue()51        {52            lock (_lock)53            {54                var tcs = new TaskCompletionSource<object>();55                _queue.Enqueue(tcs);56                return tcs.Task;57            }58        }59        public void Dequeue(object value)60        {61            lock (_lock)62            {63                var tcs = _queue.Dequeue();64                tcs.SetResult(value);65            }66        }67        public void Dispose()68        {69            lock (_lock)70            {71                while (_queue.Count > 0)72                {73                    Dequeue(null);74                }75            }76        }77    }78}79using System;80using System.Collections.Generic;81using System.Linq;82using System.Text;83using System.Threading.Tasks;84using PuppeteerSharp.Helpers;

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