Thanks Rui!

Author: mattleibow

src/Core/src/Handlers/HybridWebView/HybridWebViewHandler.iOS.cs

@@ -149,7 +149,11 @@ public async void StartUrlSchemeTask(WKWebView webView, IWKUrlSchemeTask urlSche
 					return;
 				}
 
-				var url = urlSchemeTask.Request.Url.AbsoluteString ?? "";
+				var url = urlSchemeTask.Request.Url.AbsoluteString;
+				if (string.IsNullOrEmpty(url))
+				{
+					return;
+				}
 
 				var logger = Handler.MauiContext?.CreateLogger<HybridWebViewHandler>();
 
@@ -213,7 +217,7 @@ public async void StartUrlSchemeTask(WKWebView webView, IWKUrlSchemeTask urlSche
 				logger?.LogDebug("Request for {Url} was not handled.", url);
 			}
 
-			private async Task<(byte[]? ResponseBytes, string? ContentType, int StatusCode)> GetResponseBytesAsync(string? url, ILogger? logger)
+			private async Task<(byte[]? ResponseBytes, string? ContentType, int StatusCode)> GetResponseBytesAsync(string url, ILogger? logger)
 			{
 				if (Handler is null)
 				{

src/Core/src/Platform/Android/AsyncStream.cs

@@ -6,6 +6,17 @@
 
 namespace Microsoft.Maui.Platform;
 
+/// <summary>
+/// Represents a stream that reads data asynchronously from a task that
+/// produces either a byte array or a stream.
+/// This class is useful for scenarios where the data source is not immediately
+/// available and needs to be fetched asynchronously.
+/// 
+/// Specifically, the Android WebView requires that you provide a stream
+/// immediately, but the data may not be available until later.
+/// This class allows you to wrap a task that fetches the data and provides
+/// an asynchronous stream interface to read from it.
+/// </summary>
 class AsyncStream : Stream
 {
 	readonly Task<Stream?> _streamTask;
@@ -39,6 +50,8 @@ public AsyncStream(Task<Stream?> streamTask, ILogger? logger)
 		if (_stream != null)
 			return _stream;
 
+		cancellationToken.ThrowIfCancellationRequested();
+
 		_stream = await _streamTask.ConfigureAwait(false);
 		return _stream;
 	}

src/Core/src/Platform/Android/MauiHybridWebViewClient.cs

@@ -37,7 +37,7 @@ public MauiHybridWebViewClient(HybridWebViewHandler handler)
 
 			logger?.LogDebug("Intercepting request for {Url}.", url);
 
-			if (view is not null && request is not null)
+			if (view is not null && request is not null && !string.IsNullOrEmpty(url))
 			{
 				// 1. Check if the app wants to modify or override the request
 				var response = TryInterceptResponseStream(view, request, url, logger);
@@ -60,7 +60,7 @@ public MauiHybridWebViewClient(HybridWebViewHandler handler)
 			return base.ShouldInterceptRequest(view, request);
 		}
 
-		private WebResourceResponse? TryInterceptResponseStream(AWebView view, IWebResourceRequest request, string? url, ILogger? logger)
+		private WebResourceResponse? TryInterceptResponseStream(AWebView view, IWebResourceRequest request, string url, ILogger? logger)
 		{
 			if (Handler is null || Handler is IViewHandler ivh && ivh.VirtualView is null)
 			{
@@ -84,7 +84,7 @@ public MauiHybridWebViewClient(HybridWebViewHandler handler)
 			return null;
 		}
 
-		private WebResourceResponse? GetResponseStream(AWebView view, IWebResourceRequest request, string? fullUrl, ILogger? logger)
+		private WebResourceResponse? GetResponseStream(AWebView view, IWebResourceRequest request, string fullUrl, ILogger? logger)
 		{
 			if (Handler is null || Handler is IViewHandler ivh && ivh.VirtualView is null)
 			{
@@ -106,7 +106,7 @@ public MauiHybridWebViewClient(HybridWebViewHandler handler)
 			{
 				logger?.LogDebug("Request for {Url} will be handled by the .NET method invoker.", fullUrl);
 
-				var fullUri = new Uri(fullUrl!);
+				var fullUri = new Uri(fullUr!);
 				var invokeQueryString = HttpUtility.ParseQueryString(fullUri.Query);
 				var contentBytesTask = Handler.InvokeDotNetAsync(invokeQueryString);
 				var responseStream = new AsyncStream(contentBytesTask, logger);