How to use TargetInfo class of PuppeteerSharp package

Best Puppeteer-sharp code snippet using PuppeteerSharp.TargetInfo

Browser.cs

Source:Browser.cs

...366                    case "Target.targetDestroyed":367                        await DestroyTargetAsync(e.MessageData.ToObject<TargetDestroyedResponse>(true)).ConfigureAwait(false);368                        return;369                    case "Target.targetInfoChanged":370                        ChangeTargetInfo(e.MessageData.ToObject<TargetCreatedResponse>(true));371                        return;372                }373            }374            catch (Exception ex)375            {376                string message = $"Browser failed to process {e.MessageID}. {ex.Message}. {ex.StackTrace}";377                Connection.Close(message);378            }379        }380        private void ChangeTargetInfo(TargetCreatedResponse e)381        {382            if (!TargetsMap.ContainsKey(e.TargetInfo.TargetId))383            {384                throw new InvalidTargetException("Target should exists before ChangeTargetInfo");385            }386            var target = TargetsMap[e.TargetInfo.TargetId];387            target.TargetInfoChanged(e.TargetInfo);388        }389        private async Task DestroyTargetAsync(TargetDestroyedResponse e)390        {391            if (!TargetsMap.ContainsKey(e.TargetId))392            {393                throw new InvalidTargetException("Target should exists before DestroyTarget");394            }395            var target = TargetsMap[e.TargetId];396            TargetsMap.Remove(e.TargetId);397            target.CloseTaskWrapper.TrySetResult(true);398            if (await target.InitializedTask.ConfigureAwait(false))399            {400                var args = new TargetChangedArgs { Target = target };401                TargetDestroyed?.Invoke(this, args);402                target.BrowserContext.OnTargetDestroyed(this, args);403            }404        }405        private async Task CreateTargetAsync(TargetCreatedResponse e)406        {407            var targetInfo = e.TargetInfo;408            string browserContextId = targetInfo.BrowserContextId;409            if (!(browserContextId != null && _contexts.TryGetValue(browserContextId, out var context)))410            {411                context = DefaultContext;412            }413            var target = new Target(414                e.TargetInfo,415                () => Connection.CreateSessionAsync(targetInfo),416                context);417            TargetsMap[e.TargetInfo.TargetId] = target;418            if (await target.InitializedTask.ConfigureAwait(false))419            {420                var args = new TargetChangedArgs { Target = target };421                TargetCreated?.Invoke(this, args);422                context.OnTargetCreated(this, args);423            }424        }425        internal static async Task<Browser> CreateAsync(426            Connection connection,427            string[] contextIds,428            bool ignoreHTTPSErrors,429            ViewPortOptions defaultViewPort,430            LauncherBase launcher)431        {...

Connection.cs

Source:Connection.cs

...106        {107            var response = await SendAsync(method, args).ConfigureAwait(false);108            return response.ToObject<T>(true);109        }110        internal async Task<CDPSession> CreateSessionAsync(TargetInfo targetInfo)111        {112            var sessionId = (await SendAsync<TargetAttachToTargetResponse>("Target.attachToTarget", new TargetAttachToTargetRequest113            {114                TargetId = targetInfo.TargetId,115                Flatten = true116            }).ConfigureAwait(false)).SessionId;117            return await GetSessionAsync(sessionId).ConfigureAwait(false);118        }119        internal bool HasPendingCallbacks() => _callbacks.Count != 0;120        #endregion121        internal void Close(string closeReason)122        {123            if (IsClosed)124            {125                return;126            }127            IsClosed = true;128            CloseReason = closeReason;129            Transport.StopReading();130            Disconnected?.Invoke(this, new EventArgs());131            foreach (var session in _sessions.Values.ToArray())132            {133                session.Close(closeReason);134            }135            _sessions.Clear();136            foreach (var response in _callbacks.Values.ToArray())137            {138                response.TaskWrapper.TrySetException(new TargetClosedException(139                    $"Protocol error({response.Method}): Target closed.",140                    closeReason));141            }142            _callbacks.Clear();143        }144        internal static Connection FromSession(CDPSession session) => session.Connection;145        internal CDPSession GetSession(string sessionId) => _sessions.GetValueOrDefault(sessionId);146        internal Task<CDPSession> GetSessionAsync(string sessionId) => _asyncSessions.GetItemAsync(sessionId);147        #region Private Methods148        private async void Transport_MessageReceived(object sender, MessageReceivedEventArgs e)149            => await _callbackQueue.Enqueue(() => ProcessMessage(e)).ConfigureAwait(false);150        private async Task ProcessMessage(MessageReceivedEventArgs e)151        {152            try153            {154                var response = e.Message;155                ConnectionResponse obj = null;156                if (response.Length > 0 && Delay > 0)157                {158                    await Task.Delay(Delay).ConfigureAwait(false);159                }160                try161                {162                    obj = JsonConvert.DeserializeObject<ConnectionResponse>(response, JsonHelper.DefaultJsonSerializerSettings);163                }164                catch (JsonException)165                {166                    return;167                }168                ProcessIncomingMessage(obj);169            }170            catch (Exception ex)171            {172                var message = $"Connection failed to process {e.Message}. {ex.Message}. {ex.StackTrace}";173                Close(message);174            }175        }176        private void ProcessIncomingMessage(ConnectionResponse obj)177        {178            var method = obj.Method;179            var param = obj.Params?.ToObject<ConnectionResponseParams>();180            if (method == "Target.attachedToTarget")181            {182                var sessionId = param.SessionId;183                var session = new CDPSession(this, param.TargetInfo.Type, sessionId);184                _asyncSessions.AddItem(sessionId, session);185            }186            else if (method == "Target.detachedFromTarget")187            {188                var sessionId = param.SessionId;189                if (_sessions.TryRemove(sessionId, out var session) && !session.IsClosed)190                {191                    session.Close("Target.detachedFromTarget");192                }193            }194            if (!string.IsNullOrEmpty(obj.SessionId))195            {196                var session = GetSession(obj.SessionId);197                session.OnMessage(obj);...

Target.cs

Source:Target.cs

...17        private readonly TaskCompletionSource<bool> _initializedTaskWrapper = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);18        private Task<Worker> _workerTask;19        #endregion20        internal bool IsInitialized { get; set; }21        internal TargetInfo TargetInfo { get; set; }22        internal Target(23            TargetInfo targetInfo,24            Func<Task<CDPSession>> sessionFactory,25            BrowserContext browserContext)26        {27            TargetInfo = targetInfo;28            _sessionFactory = sessionFactory;29            BrowserContext = browserContext;30            PageTask = null;31            _ = _initializedTaskWrapper.Task.ContinueWith(async initializedTask =>32            {33                var success = initializedTask.Result;34                if (!success)35                {36                    return;37                }38                var openerPageTask = Opener?.PageTask;39                if (openerPageTask == null || Type != TargetType.Page)40                {41                    return;42                }43                var openerPage = await openerPageTask.ConfigureAwait(false);44                if (!openerPage.HasPopupEventListeners)45                {46                    return;47                }48                var popupPage = await PageAsync().ConfigureAwait(false);49                openerPage.OnPopup(popupPage);50            });51            CloseTaskWrapper = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);52            IsInitialized = TargetInfo.Type != TargetType.Page || TargetInfo.Url != string.Empty;53            if (IsInitialized)54            {55                _initializedTaskWrapper.TrySetResult(true);56            }57        }58        #region Properties59        /// <summary>60        /// Gets the URL.61        /// </summary>62        /// <value>The URL.</value>63        public string Url => TargetInfo.Url;64        /// <summary>65        /// Gets the type. It will be <see cref="TargetInfo.Type"/>.66        /// Can be `"page"`, `"background_page"`, `"service_worker"`, `"shared_worker"`, `"browser"` or `"other"`.67        /// </summary>68        /// <value>The type.</value>69        public TargetType Type => TargetInfo.Type;70        /// <summary>71        /// Gets the target identifier.72        /// </summary>73        /// <value>The target identifier.</value>74        public string TargetId => TargetInfo.TargetId;75        /// <summary>76        /// Get the target that opened this target77        /// </summary>78        /// <remarks>79        /// Top-level targets return <c>null</c>.80        /// </remarks>81        public Target Opener => TargetInfo.OpenerId != null ?82            Browser.TargetsMap.GetValueOrDefault(TargetInfo.OpenerId) : null;83        /// <summary>84        /// Get the browser the target belongs to.85        /// </summary>86        public Browser Browser => BrowserContext.Browser;87        /// <summary>88        /// Get the browser context the target belongs to.89        /// </summary>90        public BrowserContext BrowserContext { get; }91        internal Task<bool> InitializedTask => _initializedTaskWrapper.Task;92        internal Task CloseTask => CloseTaskWrapper.Task;93        internal TaskCompletionSource<bool> CloseTaskWrapper { get; }94        internal Task<Page> PageTask { get; set; }95        #endregion96        /// <summary>97        /// Returns the <see cref="Page"/> associated with the target. If the target is not <c>"page"</c> or <c>"background_page"</c> returns <c>null</c>98        /// </summary>99         /// <returns>a task that returns a <see cref="Page"/></returns>100        public Task<Page> PageAsync()101        {102            if ((TargetInfo.Type == TargetType.Page || TargetInfo.Type == TargetType.BackgroundPage) && PageTask == null)103            {104                PageTask = CreatePageAsync();105            }106            return PageTask ?? Task.FromResult<Page>(null);107        }108        /// <summary>109        /// If the target is not of type `"service_worker"` or `"shared_worker"`, returns `null`.110        /// </summary>111        /// <returns>A task that returns a <see cref="Worker"/></returns>112        public Task<Worker> WorkerAsync()113        {114            if (TargetInfo.Type != TargetType.ServiceWorker && TargetInfo.Type != TargetType.SharedWorker)115            {116                return null;117            }118            if (_workerTask == null)119            {120                _workerTask = WorkerInternalAsync();121            }122            return _workerTask;123        }124        private async Task<Worker> WorkerInternalAsync()125        {126            var client = await _sessionFactory().ConfigureAwait(false);127            var targetAttachedWrapper = new TaskCompletionSource<string>(TaskCreationOptions.RunContinuationsAsynchronously);128            void MessageReceived(object sender, MessageEventArgs e)129            {130                if (e.MessageID == "Target.attachedToTarget")131                {132                    targetAttachedWrapper.TrySetResult(e.MessageData.ToObject<TargetAttachedToTargetResponse>(true).SessionId);133                    client.MessageReceived -= MessageReceived;134                }135            }136            client.MessageReceived += MessageReceived;137            await Task.WhenAll(138                targetAttachedWrapper.Task,139                client.SendAsync("Target.setAutoAttach", new TargetSetAutoAttachRequest140                {141                    AutoAttach = true,142                    WaitForDebuggerOnStart = false,143                    Flatten = true144                })).ConfigureAwait(false);145            var session = Connection.FromSession(client).GetSession(targetAttachedWrapper.Task.Result);146            return new Worker(147                session,148                TargetInfo.Url,149                (consoleType, handles, stackTrace) => Task.CompletedTask,150                (e) => { });151        }152        private async Task<Page> CreatePageAsync()153        {154            var session = await _sessionFactory().ConfigureAwait(false);155            return await Page.CreateAsync(session, this, Browser.IgnoreHTTPSErrors, Browser.DefaultViewport, Browser.ScreenshotTaskQueue).ConfigureAwait(false);156        }157        internal void TargetInfoChanged(TargetInfo targetInfo)158        {159            var previousUrl = TargetInfo.Url;160            TargetInfo = targetInfo;161            if (!IsInitialized && (TargetInfo.Type != TargetType.Page || TargetInfo.Url != string.Empty))162            {163                IsInitialized = true;164                _initializedTaskWrapper.TrySetResult(true);165                return;166            }167            if (previousUrl != targetInfo.Url)168            {169                Browser.ChangeTarget(this);170            }171        }172        /// <summary>173        /// Creates a Chrome Devtools Protocol session attached to the target.174        /// </summary>175        /// <returns>A task that returns a <see cref="CDPSession"/></returns>176        public Task<CDPSession> CreateCDPSessionAsync() => Browser.Connection.CreateSessionAsync(TargetInfo);177    }178}...

TargetInfo.cs

Source:TargetInfo.cs

...3{4    /// <summary>5    /// Target info.6    /// </summary>7    public class TargetInfo8    {9        /// <summary>10        /// Initializes a new instance of the <see cref="TargetInfo"/> class.11        /// </summary>12        public TargetInfo()13        {14        }15        /// <summary>16        /// Initializes a new instance of the <see cref="TargetInfo"/> class.17        /// </summary>18        /// <param name="targetInfo">Target info.</param>19        public TargetInfo(dynamic targetInfo)20        {21            Type = targetInfo.type;22            Url = targetInfo.url;23            TargetId = targetInfo.targetId;24            SourceObject = targetInfo;25        }26        /// <summary>27        /// Gets or sets the type.28        /// </summary>29        /// <value>The type.</value>30        public string Type { get; internal set; }31        /// <summary>32        /// Gets or sets the URL.33        /// </summary>...

TargetChangedArgs.cs

Source:TargetChangedArgs.cs

...11        /// <summary>12        /// Gets or sets the target info.13        /// </summary>14        /// <value>The target info.</value>15        public TargetInfo TargetInfo { get; internal set; }16        /// <summary>17        /// Gets or sets the target.18        /// </summary>19        /// <value>The target.</value>20        public Target Target { get; internal set; }21    }...

ConnectionResponseParams.cs

Source:ConnectionResponseParams.cs

...4    {5        public string SessionId { get; set; }6        public string Message { get; set; }7        public string Stream { get; set; }8        public TargetInfo TargetInfo { get; set; }9    }...

TargetAttachedToTargetResponse.cs

Source:TargetAttachedToTargetResponse.cs

1ï»¿namespace PuppeteerSharp.Messaging2{3    internal class TargetAttachedToTargetResponse4    {5        public TargetInfo TargetInfo { get; set; }6        public string SessionId { get; set; }7    }8}...

TargetCreatedResponse.cs

Source:TargetCreatedResponse.cs

1ï»¿namespace PuppeteerSharp.Messaging2{3    internal class TargetCreatedResponse4    {5        public TargetInfo TargetInfo { get; set; }6    }...

TargetInfo

Using AI Code Generation

1{2    public string TargetId { get; set; }3    public string Type { get; set; }4    public string Title { get; set; }5    public string Url { get; set; }6    public bool? IsClosed { get; set; }7    public string BrowserContextId { get; set; }8}9{10    public string TargetId { get; set; }11    public string Type { get; set; }12    public string Title { get; set; }13    public string Url { get; set; }14    public bool? IsClosed { get; set; }15    public string BrowserContextId { get; set; }16}

TargetInfo

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        public string TargetId { get; set; }7        public string Type { get; set; }8        public string Title { get; set; }9        public string Url { get; set; }10        public bool Attached { get; set; }11        public string BrowserContextId { get; set; }12    }13}14using PuppeteerSharp;15using System;16using System.Threading.Tasks;17{18    {19        public string TargetId { get; set; }20        public string Type { get; set; }21        public string Title { get; set; }22        public string Url { get; set; }23        public bool Attached { get; set; }24        public string BrowserContextId { get; set; }25    }26}27using PuppeteerSharp;28using System;29using System.Threading.Tasks;30{31    {32        public string TargetId { get; set; }33        public string Type { get; set; }34        public string Title { get; set; }35        public string Url { get; set; }36        public bool Attached { get; set; }37        public string BrowserContextId { get; set; }38    }39}40using PuppeteerSharp;41using System;42using System.Threading.Tasks;43{44    {45        public string TargetId { get; set; }46        public string Type { get; set; }47        public string Title { get; set; }48        public string Url { get; set; }49        public bool Attached { get; set; }50        public string BrowserContextId { get; set; }51    }52}53using PuppeteerSharp;54using System;55using System.Threading.Tasks;56{57    {58        public string TargetId { get; set; }59        public string Type { get; set

TargetInfo

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var options = new LaunchOptions { Headless = true };9            using (var browser = await Puppeteer.LaunchAsync(options))10            {11                var page = await browser.NewPageAsync();12                string title = await page.EvaluateFunctionAsync<string>("() => document.title");13                Console.WriteLine("Page title is: " + title);14                string url = await page.EvaluateFunctionAsync<string>("() => document.URL");15                Console.WriteLine("Page url is: " + url);16                string html = await page.EvaluateFunctionAsync<string>("() => document.documentElement.outerHTML");17                Console.WriteLine("Page html is: " + html);18            }19        }20    }21}22using PuppeteerSharp;23using System;24using System.Threading.Tasks;25{26    {27        static async Task Main(string[] args)28        {29            var options = new LaunchOptions { Headless = true };30            using (var browser = await Puppeteer.LaunchAsync(options))31            {32                var page = await browser.NewPageAsync();33                string title = await page.EvaluateFunctionAsync<string>("() => document.title");34                Console.WriteLine("Page title is: " + title);35                string url = await page.EvaluateFunctionAsync<string>("() => document.URL");36                Console.WriteLine("Page url is: " + url);37                string html = await page.EvaluateFunctionAsync<string>("() => document.documentElement.outerHTML");38                Console.WriteLine("Page html is: " + html);39            }40        }41    }42}

TargetInfo

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var options = new LaunchOptions { Headless = true };9            using (var browser = await Puppeteer.LaunchAsync(options))10            using (var page = await browser.NewPageAsync())11            {12                await page.ScreenshotAsync("google.png");13            }14        }15    }16}17using PuppeteerSharp;18using System;19using System.Threading.Tasks;20{21    {22        static async Task Main(string[] args)23        {24            var options = new LaunchOptions { Headless = true };25            using (var browser = await Puppeteer.LaunchAsync(options))26            using (var page = await browser.NewPageAsync())27            {28                await page.ScreenshotAsync("google.png");29            }30        }31    }32}33using PuppeteerSharp;34using System;35using System.Threading.Tasks;36{37    {38        static async Task Main(string[] args)39        {40            var options = new LaunchOptions { Headless = true };41            using (var browser = await Puppeteer.LaunchAsync(options))42            using (var page = await browser.NewPageAsync())43            {44                await page.ScreenshotAsync("google.png");45            }46        }47    }48}49using PuppeteerSharp;50using System;51using System.Threading.Tasks;52{53    {54        static async Task Main(string[] args)55        {56            var options = new LaunchOptions { Headless = true };57            using (var browser = await Puppeteer.LaunchAsync(options))58            using (var page = await browser.NewPageAsync())59            {60                await page.ScreenshotAsync("google.png");61            }62        }63    }64}

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