Fixed devtools url used for debug with chrome and edge

src/Components/WebAssembly/Server/src/TargetPickerUi.cs

@@ -10,6 +10,7 @@
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Extensions;
 using System.Dynamic;
 
 namespace Microsoft.AspNetCore.Components.WebAssembly.Server;
@@ -366,9 +367,31 @@
     {
         var underlyingV8Endpoint = new Uri(tabToDebug.WebSocketDebuggerUrl);
         var proxyEndpoint = new Uri(_debugProxyUrl);
-        var devToolsUrlAbsolute = new Uri(_browserHost + tabToDebug.DevtoolsFrontendUrl);
+        var devToolsUrlAbsolute = new Uri(new Uri(_browserHost), relativeUri: NormalizeDevtoolsFrontendUrl(tabToDebug.DevtoolsFrontendUrl));
         var devToolsUrlWithProxy = $"{devToolsUrlAbsolute.Scheme}://{devToolsUrlAbsolute.Authority}{devToolsUrlAbsolute.AbsolutePath}?{underlyingV8Endpoint.Scheme}={proxyEndpoint.Authority}{underlyingV8Endpoint.PathAndQuery}";
         return devToolsUrlWithProxy;
+
+        static string NormalizeDevtoolsFrontendUrl(string devtoolsFrontendUrl)
+        {
+            // Currently frontend url can be:
+            // - absolute (since v135 of chrome and edge)
+            //      chrome example: https://chrome-devtools-frontend.appspot.com/serve_rev/@031848bc6ad02b97854f3d6154d3aefd0434756a/inspector.html?ws=localhost:9222/devtools/page/719FE9D3B43570193235446E0AB36859
+            //      edge example: https://aka.ms/docs-landing-page/serve_rev/@4e2c41645f24197463afa2ab6aa999352ee8255c/inspector.html?ws=localhost:9222/devtools/page/3A4D56E09776321628432588FC9299F4
+            // - relative (managed as fallback for brosers with prior version)
+            //      example: /devtools/inspector.html?ws=localhost:9222/devtools/page/DAB7FB6187B554E10B0BD18821265734
+            // The absolute url can't be used as-is because is not valid for debugging and cannot be made relative because of lack "devtools" segment
+            // before "inspector.html" but we can keep the query string and append to the default "devtools/inspector.html" browser devtools page
+
+            const string DefaultBrowserDevToolsPagePath = "devtools/inspector.html";
+
+            if (devtoolsFrontendUrl.AsSpan().TrimStart('/').StartsWith(DefaultBrowserDevToolsPagePath))
+            {
+                return devtoolsFrontendUrl;
+            }
+
+            UriHelper.FromAbsolute(url, out _, out _, out _, out var query, out _);
+            return $"{DefaultBrowserDevToolsPagePath}{query}";
+        }
     }
 
     private string GetLaunchChromeInstructions(string targetApplicationUrl)