flutter tool cors patch

corsproxypatch.patch

diff --git a/packages/flutter_tools/lib/src/isolated/devfs_web.dart b/packages/flutter_tools/lib/src/isolated/devfs_web.dart
index e9fd1d07b6..5e6c648962 100644
--- a/packages/flutter_tools/lib/src/isolated/devfs_web.dart
+++ b/packages/flutter_tools/lib/src/isolated/devfs_web.dart
@@ -17,6 +17,7 @@ import 'package:mime/mime.dart' as mime;
 import 'package:package_config/package_config.dart';
 import 'package:shelf/shelf.dart' as shelf;
 import 'package:shelf/shelf_io.dart' as shelf;
+import 'package:shelf_proxy/shelf_proxy.dart';
 import 'package:vm_service/vm_service.dart' as vm_service;
 
 import '../artifacts.dart';
@@ -297,6 +298,27 @@ expressionCompiler: expressionCompiler,
       spawnDds: enableDds,
       sdkConfigurationProvider: SdkWebConfigurationProvider(globals.artifacts!),
     );
     shelf.Pipeline pipeline = const shelf.Pipeline();
+    shelf.Handler customProxyMiddleware(
+        FutureOr<shelf.Response> Function(shelf.Request) innerHandler) {
+      return (shelf.Request request) async {
+        if (request.url.path.startsWith('api')) {
+          String uri =
+              'https://api.tv.kpn.com/${request.url.path.replaceFirst(RegExp(r'api/?'), '')}';
+          if (request.url.hasQuery) {
+            uri += '?${request.url.query}';
+          }
+          // todo: rewrite headers / credentials;
+          final shelf.Request rewritten = shelf.Request(
+              request.method, Uri.parse(uri),
+              headers: request.headers,
+              context: request.context,
+              body: await request.readAsString());
+          return proxyHandler('https://example-api-service.com/')(rewritten);
+        }
+        return innerHandler(request);
+      };
+    }
+    pipeline = pipeline.addMiddleware(customProxyMiddleware);
     if (enableDwds) {
       pipeline = pipeline.addMiddleware(middleware);
       pipeline = pipeline.addMiddleware(dwds.middleware);