iOS Embeded Youtube Buffering Indefinitely with InterceptFetchRequest

[getBoolean]

• [x] I have read the Getting Started section
• [x] I have already searched for the same problem

Environment

Technology	Version
Flutter version	3.19.0-0.3.pre
Plugin version	6.0.0
Android version
iOS version	17.0/17.2
macOS version	14.0
Xcode version	15.2
Google Chrome version

Device information: iPad Pro 6th gen 12.9 inch

Description

Expected behavior: Embedded youtube video should play

Current behavior: Tested using holodex.net, embedded YouTube videos buffer indefinitely with useShouldInterceptFetchRequest set to true and with the InAppWebView.shouldInterceptFetchRequest function provided. It also happens with the shouldInterceptAjaxRequest function. For context, I need the ability to intercept and modify a request. This is only reproducible on iOS, not Android.

Steps to reproduce

Websites tested:

• holodex.net
• bing videos

Click to see code

```dart import 'package:flutter/foundation.dart'; import 'package:flutter/gestures.dart'; import 'package:flutter/material.dart'; import 'package:flutter_inappwebview/flutter_inappwebview.dart'; import 'package:url_launcher/url_launcher.dart'; class WebView extends StatefulWidget { const WebView({super.key}); @override State createState() => _WebViewState(); } class _WebViewState extends State { final GlobalKey webViewKey = GlobalKey(); InAppWebViewController? webViewController; InAppWebViewSettings settings = InAppWebViewSettings( isInspectable: kDebugMode, mediaPlaybackRequiresUserGesture: false, allowsInlineMediaPlayback: true, iframeAllow: 'camera; microphone', iframeAllowFullscreen: true, useShouldInterceptFetchRequest: true, userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36', ); PullToRefreshController? pullToRefreshController; String url = ''; double progress = 0; final urlController = TextEditingController(); @override void initState() { super.initState(); pullToRefreshController = kIsWeb ? null : PullToRefreshController( settings: PullToRefreshSettings( color: Colors.blue, ), onRefresh: () async { if (defaultTargetPlatform == TargetPlatform.android) { await webViewController?.reload(); } else if (defaultTargetPlatform == TargetPlatform.iOS) { await webViewController?.loadUrl( urlRequest: URLRequest(url: await webViewController?.getUrl()), ); } }, ); } @override Widget build(BuildContext context) { return Scaffold( body: SafeArea( child: Column( children: [ _WebViewUrlBar( urlController: urlController, webViewController: webViewController, ), Expanded( child: Stack( children: [ InAppWebView( key: webViewKey, initialUrlRequest: URLRequest( url: WebUri('https://holodex.net/'), ), gestureRecognizers: >{}..add( const Factory( VerticalDragGestureRecognizer.new, ), ), initialSettings: settings, pullToRefreshController: pullToRefreshController, onWebViewCreated: (controller) { webViewController = controller; }, onLoadStart: (controller, url) { setState(() { this.url = url.toString(); urlController.text = this.url; }); }, onPermissionRequest: (controller, request) async { return PermissionResponse( resources: request.resources, action: PermissionResponseAction.GRANT, ); }, // shouldInterceptAjaxRequest: // (controller, ajaxRequest) async { // print(ajaxRequest.url); // return ajaxRequest; // }, // ----------- PROBLEM // even though this just returns the same request, the video keeps buffering shouldInterceptFetchRequest: (controller, fetchRequest) async => fetchRequest, shouldOverrideUrlLoading: (controller, navigationAction) async { final uri = navigationAction.request.url; if (uri == null) { return NavigationActionPolicy.ALLOW; } if (![ 'http', 'https', 'file', 'chrome', 'data', 'javascript', 'about', ].contains(uri.scheme)) { if (await canLaunchUrl(uri)) { // Launch the App await launchUrl( uri, ); // and cancel the request return NavigationActionPolicy.CANCEL; } } return NavigationActionPolicy.ALLOW; }, onLoadStop: (controller, url) async { await pullToRefreshController?.endRefreshing(); setState(() { this.url = url.toString(); urlController.text = this.url; }); }, onReceivedError: (controller, request, error) { pullToRefreshController?.endRefreshing(); }, onProgressChanged: (controller, progress) { if (progress == 100) { pullToRefreshController?.endRefreshing(); } setState(() { this.progress = progress / 100; urlController.text = url; }); }, onUpdateVisitedHistory: (controller, url, androidIsReload) { setState(() { this.url = url.toString(); urlController.text = this.url; }); }, onConsoleMessage: (controller, consoleMessage) { if (kDebugMode) { print(consoleMessage); } }, ), if (progress < 1.0) LinearProgressIndicator(value: progress) else Container(), ], ), ), _WebViewControls(webViewController: webViewController), ], ), ), ); } } class _WebViewControls extends StatelessWidget { const _WebViewControls({ required this.webViewController, }); final InAppWebViewController? webViewController; @override Widget build(BuildContext context) { return ButtonBar( alignment: MainAxisAlignment.center, children: [ ElevatedButton( child: const Icon(Icons.arrow_back), onPressed: () { webViewController?.goBack(); }, ), ElevatedButton( child: const Icon(Icons.arrow_forward), onPressed: () { webViewController?.goForward(); }, ), ElevatedButton( child: const Icon(Icons.refresh), onPressed: () { webViewController?.reload(); }, ), ], ); } } class _WebViewUrlBar extends StatelessWidget { const _WebViewUrlBar({ required this.urlController, required this.webViewController, }); final TextEditingController urlController; final InAppWebViewController? webViewController; @override Widget build(BuildContext context) { return TextField( decoration: const InputDecoration(prefixIcon: Icon(Icons.search)), controller: urlController, keyboardType: TextInputType.url, onSubmitted: loadUrl, onTapOutside: (event) { loadUrl(urlController.text); }, ); } void loadUrl(String value) { var url = WebUri(value); if (url.scheme.isEmpty) { url = WebUri('https://www.google.com/search?q=$value'); } webViewController?.loadUrl( urlRequest: URLRequest(url: url), ); } } ```

Images

Stacktrace/Logcat

[github-actions[bot]]

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NOTE: This comment is auto-generated.

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[getBoolean]

Looks like shouldInterceptFetchRequest won't do what I want anyway (intercept the url given to an iframe). I'll keep this open since its a weird edge case.

[SkepsonSk]

Hey, I had the same issue with embedded YT videos. I solved it by injecting a JS detecting the videos and displaying buttons which after clicking them would open ChromeSafariBrowser with YT URL.

It seems this is some iOS blockade. I had the same issue with embedded PowerPoint