windows: fixed in app browser dealloc, fixed on load stop event, implemented onReceivedError and onReceivedHttpError events

flutter_inappwebview/example/lib/in_app_browser_example.screen.dart

@@ -30,6 +30,7 @@ class MyInAppBrowser extends InAppBrowser {
   @override
   Future onLoadStop(url) async {
     pullToRefreshController?.endRefreshing();
+    print(await webViewController?.getUrl());
   }
 
   @override

flutter_inappwebview_platform_interface/lib/src/in_app_browser/platform_in_app_browser.dart

@@ -64,6 +64,7 @@ class PlatformInAppBrowserCreationParams {
 ///- Android native WebView
 ///- iOS
 ///- MacOS
+///- Windows
 ///{@endtemplate}
 abstract class PlatformInAppBrowser extends PlatformInterface
     implements Disposable {
@@ -172,6 +173,7 @@ abstract class PlatformInAppBrowser extends PlatformInterface
   ///- Android native WebView
   ///- iOS
   ///- MacOS
+  ///- Windows
   ///{@endtemplate}
   Future<void> openUrlRequest(
       {required URLRequest urlRequest,
@@ -464,6 +466,7 @@ abstract class PlatformInAppBrowser extends PlatformInterface
   ///- Android native WebView
   ///- iOS
   ///- MacOS
+  ///- Windows
   ///{@endtemplate}
   bool isOpened() {
     throw UnimplementedError(
@@ -487,6 +490,7 @@ abstract class PlatformInAppBrowserEvents {
   ///- Android native WebView
   ///- iOS
   ///- MacOS
+  ///- Windows
   void onBrowserCreated() {}
 
   ///Event fired when the [PlatformInAppBrowser] window is closed.
@@ -495,6 +499,7 @@ abstract class PlatformInAppBrowserEvents {
   ///- Android native WebView
   ///- iOS
   ///- MacOS
+  ///- Windows
   void onExit() {}
 
   ///Event fired when the main window is about to close.
@@ -509,6 +514,7 @@ abstract class PlatformInAppBrowserEvents {
   ///- Android native WebView ([Official API - WebViewClient.onPageStarted](https://developer.android.com/reference/android/webkit/WebViewClient#onPageStarted(android.webkit.WebView,%20java.lang.String,%20android.graphics.Bitmap)))
   ///- iOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455621-webview))
   ///- MacOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455621-webview))
+  ///- Windows ([Official API - IWebView2WebView.add_NavigationStarting](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/iwebview2webview?view=webview2-0.8.355#add_navigationstarting))
   void onLoadStart(WebUri? url) {}
 
   ///Event fired when the [PlatformInAppBrowser] finishes loading an [url].
@@ -517,6 +523,7 @@ abstract class PlatformInAppBrowserEvents {
   ///- Android native WebView ([Official API - WebViewClient.onPageFinished](https://developer.android.com/reference/android/webkit/WebViewClient#onPageFinished(android.webkit.WebView,%20java.lang.String)))
   ///- iOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455629-webview))
   ///- MacOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455629-webview))
+  ///- Windows ([Official API - IWebView2WebView.add_NavigationCompleted](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/iwebview2webview?view=webview2-0.8.355#add_navigationcompleted))
   void onLoadStop(WebUri? url) {}
 
   ///Use [onReceivedError] instead.
@@ -529,6 +536,7 @@ abstract class PlatformInAppBrowserEvents {
   ///- Android native WebView ([Official API - WebViewClient.onReceivedError](https://developer.android.com/reference/android/webkit/WebViewClient#onReceivedError(android.webkit.WebView,%20android.webkit.WebResourceRequest,%20android.webkit.WebResourceError)))
   ///- iOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455623-webview))
   ///- MacOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455623-webview))
+  ///- Windows ([Official API - IWebView2WebView.add_NavigationCompleted](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/iwebview2webview?view=webview2-0.8.355#add_navigationcompleted))
   void onReceivedError(WebResourceRequest request, WebResourceError error) {}
 
   ///Use [onReceivedHttpError] instead.
@@ -547,6 +555,7 @@ abstract class PlatformInAppBrowserEvents {
   ///- Android native WebView ([Official API - WebViewClient.onReceivedHttpError](https://developer.android.com/reference/android/webkit/WebViewClient#onReceivedHttpError(android.webkit.WebView,%20android.webkit.WebResourceRequest,%20android.webkit.WebResourceResponse)))
   ///- iOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455643-webview))
   ///- MacOS ([Official API - WKNavigationDelegate.webView](https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455643-webview))
+  ///- Windows ([Official API - IWebView2WebView.add_NavigationCompleted](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/iwebview2webview?view=webview2-0.8.355#add_navigationcompleted))
   void onReceivedHttpError(
       WebResourceRequest request, WebResourceResponse errorResponse) {}
 

flutter_inappwebview_platform_interface/lib/src/in_app_webview/platform_inappwebview_controller.dart

@@ -134,6 +134,7 @@ abstract class PlatformInAppWebViewController extends PlatformInterface
   ///- iOS ([Official API - WKWebView.url](https://developer.apple.com/documentation/webkit/wkwebview/1415005-url))
   ///- MacOS ([Official API - WKWebView.url](https://developer.apple.com/documentation/webkit/wkwebview/1415005-url))
   ///- Web
+  ///- Windows ([Official API - IWebView2WebView.get_Source](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/iwebview2webview?view=webview2-0.8.355#get_source))
   ///{@endtemplate}
   Future<WebUri?> getUrl() {
     throw UnimplementedError(
@@ -224,6 +225,7 @@ abstract class PlatformInAppWebViewController extends PlatformInterface
   ///- iOS ([Official API - WKWebView.load](https://developer.apple.com/documentation/webkit/wkwebview/1414954-load). If [allowingReadAccessTo] is used, [Official API - WKWebView.loadFileURL](https://developer.apple.com/documentation/webkit/wkwebview/1414973-loadfileurl))
   ///- MacOS ([Official API - WKWebView.load](https://developer.apple.com/documentation/webkit/wkwebview/1414954-load). If [allowingReadAccessTo] is used, [Official API - WKWebView.loadFileURL](https://developer.apple.com/documentation/webkit/wkwebview/1414973-loadfileurl))
   ///- Web
+  ///- Windows ([Official API - ICoreWebView2_2.NavigateWithWebResourceRequest](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/icorewebview2_2?view=webview2-1.0.2210.55#navigatewithwebresourcerequest))
   ///{@endtemplate}
   Future<void> loadUrl(
       {required URLRequest urlRequest,

flutter_inappwebview_platform_interface/lib/src/types/web_resource_error_type.dart

@@ -60,7 +60,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.cannotConnectToHost',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/code/2883001-cannotconnecttohost',
-        value: -1004)
+        value: -1004),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_CANNOT_CONNECT',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 12)
   ])
   static const CANNOT_CONNECT_TO_HOST =
       WebResourceErrorType_._internal("CANNOT_CONNECT_TO_HOST");
@@ -124,7 +129,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.cannotFindHost',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/code/2883157-cannotfindhost',
-        value: -1003)
+        value: -1003),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_HOST_NAME_NOT_RESOLVED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 13)
   ])
   static const HOST_LOOKUP = WebResourceErrorType_._internal("HOST_LOOKUP");
 
@@ -186,7 +196,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.timedOut',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/code/2883027-timedout',
-        value: -1001)
+        value: -1001),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_TIMEOUT',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 7)
   ])
   static const TIMEOUT = WebResourceErrorType_._internal("TIMEOUT");
 
@@ -217,7 +232,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.unknown',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/2293357-unknown',
-        value: -1)
+        value: -1),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_UNKNOWN',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 0)
   ])
   static const UNKNOWN = WebResourceErrorType_._internal("UNKNOWN");
 
@@ -276,7 +296,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.cancelled',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/code/2883178-cancelled',
-        value: -999)
+        value: -999),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_OPERATION_CANCELED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 14)
   ])
   static const CANCELLED = WebResourceErrorType_._internal("CANCELLED");
 
@@ -291,7 +316,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.networkConnectionLost',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/2293759-networkconnectionlost',
-        value: -1005)
+        value: -1005),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_DISCONNECTED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 11)
   ])
   static const NETWORK_CONNECTION_LOST =
       WebResourceErrorType_._internal("NETWORK_CONNECTION_LOST");
@@ -356,7 +386,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.badServerResponse',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/2293606-badserverresponse',
-        value: -1011)
+        value: -1011),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_ERROR_HTTP_INVALID_SERVER_RESPONSE',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 8)
   ])
   static const BAD_SERVER_RESPONSE =
       WebResourceErrorType_._internal("BAD_SERVER_RESPONSE");
@@ -389,7 +424,12 @@ class WebResourceErrorType_ {
         apiName: 'URLError.userAuthenticationRequired',
         apiUrl:
             'https://developer.apple.com/documentation/foundation/urlerror/2293560-userauthenticationrequired',
-        value: -1013)
+        value: -1013),
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_VALID_AUTHENTICATION_CREDENTIALS_REQUIRED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 17),
   ])
   static const USER_AUTHENTICATION_REQUIRED =
       WebResourceErrorType_._internal("USER_AUTHENTICATION_REQUIRED");
@@ -892,4 +932,64 @@ class WebResourceErrorType_ {
   ])
   static const BACKGROUND_SESSION_WAS_DISCONNECTED =
       WebResourceErrorType_._internal("BACKGROUND_SESSION_WAS_DISCONNECTED");
+
+  ///Indicates that the host is unreachable.
+  @EnumSupportedPlatforms(platforms: [
+    EnumWindowsPlatform(
+    apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_SERVER_UNREACHABLE',
+    apiUrl:
+    'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+    value: 6),
+  ])
+  static const SERVER_UNREACHABLE = WebResourceErrorType_._internal("SERVER_UNREACHABLE");
+
+  ///Indicates that the connection was stopped.
+  @EnumSupportedPlatforms(platforms: [
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_CONNECTION_ABORTED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 9)
+  ])
+  static const CONNECTION_ABORTED = WebResourceErrorType_._internal("CONNECTION_ABORTED");
+
+  ///Indicates that the connection was reset.
+  @EnumSupportedPlatforms(platforms: [
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_CONNECTION_RESET',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 10),
+  ])
+  static const RESET = WebResourceErrorType_._internal("RESET");
+
+  ///Indicates that the request redirect failed.
+  @EnumSupportedPlatforms(platforms: [
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_REDIRECT_FAILED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 15),
+  ])
+  static const REDIRECT_FAILED = WebResourceErrorType_._internal("REDIRECT_FAILED");
+
+  ///Indicates that an unexpected error occurred.
+  @EnumSupportedPlatforms(platforms: [
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_UNEXPECTED_ERROR',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 16),
+  ])
+  static const UNEXPECTED_ERROR = WebResourceErrorType_._internal("UNEXPECTED_ERROR");
+
+  ///Indicates that user lacks proper authentication credentials for a proxy server.
+  @EnumSupportedPlatforms(platforms: [
+    EnumWindowsPlatform(
+        apiName: 'COREWEBVIEW2_WEB_ERROR_STATUS_VALID_PROXY_AUTHENTICATION_REQUIRED',
+        apiUrl:
+        'https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status',
+        value: 18),
+  ])
+  static const VALID_PROXY_AUTHENTICATION_REQUIRED = WebResourceErrorType_._internal("VALID_PROXY_AUTHENTICATION_REQUIRED");
 }

flutter_inappwebview_platform_interface/lib/src/types/web_resource_error_type.g.dart

@@ -97,6 +97,7 @@ class WebResourceErrorType {
   ///**Officially Supported Platforms/Implementations**:
   ///- iOS ([Official API - URLError.badServerResponse](https://developer.apple.com/documentation/foundation/urlerror/2293606-badserverresponse))
   ///- MacOS ([Official API - URLError.badServerResponse](https://developer.apple.com/documentation/foundation/urlerror/2293606-badserverresponse))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_ERROR_HTTP_INVALID_SERVER_RESPONSE](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final BAD_SERVER_RESPONSE =
       WebResourceErrorType._internalMultiPlatform('BAD_SERVER_RESPONSE', () {
     switch (defaultTargetPlatform) {
@@ -104,6 +105,8 @@ class WebResourceErrorType {
         return -1011;
       case TargetPlatform.macOS:
         return -1011;
+      case TargetPlatform.windows:
+        return 8;
       default:
         break;
     }
@@ -154,6 +157,7 @@ class WebResourceErrorType {
   ///**Officially Supported Platforms/Implementations**:
   ///- iOS ([Official API - URLError.cancelled](https://developer.apple.com/documentation/foundation/urlerror/code/2883178-cancelled))
   ///- MacOS ([Official API - URLError.cancelled](https://developer.apple.com/documentation/foundation/urlerror/code/2883178-cancelled))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_OPERATION_CANCELED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final CANCELLED =
       WebResourceErrorType._internalMultiPlatform('CANCELLED', () {
     switch (defaultTargetPlatform) {
@@ -161,6 +165,8 @@ class WebResourceErrorType {
         return -999;
       case TargetPlatform.macOS:
         return -999;
+      case TargetPlatform.windows:
+        return 14;
       default:
         break;
     }
@@ -191,6 +197,7 @@ class WebResourceErrorType {
   ///- Android native WebView ([Official API - WebViewClient.ERROR_CONNECT](https://developer.android.com/reference/android/webkit/WebViewClient#ERROR_CONNECT))
   ///- iOS ([Official API - URLError.cannotConnectToHost](https://developer.apple.com/documentation/foundation/urlerror/code/2883001-cannotconnecttohost))
   ///- MacOS ([Official API - URLError.cannotConnectToHost](https://developer.apple.com/documentation/foundation/urlerror/code/2883001-cannotconnecttohost))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_CANNOT_CONNECT](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final CANNOT_CONNECT_TO_HOST =
       WebResourceErrorType._internalMultiPlatform('CANNOT_CONNECT_TO_HOST', () {
     switch (defaultTargetPlatform) {
@@ -200,6 +207,8 @@ class WebResourceErrorType {
         return -1004;
       case TargetPlatform.macOS:
         return -1004;
+      case TargetPlatform.windows:
+        return 12;
       default:
         break;
     }
@@ -408,6 +417,21 @@ class WebResourceErrorType {
     return null;
   });
 
+  ///Indicates that the connection was stopped.
+  ///
+  ///**Officially Supported Platforms/Implementations**:
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_CONNECTION_ABORTED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
+  static final CONNECTION_ABORTED =
+      WebResourceErrorType._internalMultiPlatform('CONNECTION_ABORTED', () {
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.windows:
+        return 9;
+      default:
+        break;
+    }
+    return null;
+  });
+
   ///The length of the resource data exceeds the maximum allowed.
   ///
   ///**Officially Supported Platforms/Implementations**:
@@ -558,6 +582,7 @@ class WebResourceErrorType {
   ///- Android native WebView ([Official API - WebViewClient.ERROR_HOST_LOOKUP](https://developer.android.com/reference/android/webkit/WebViewClient#ERROR_HOST_LOOKUP))
   ///- iOS ([Official API - URLError.cannotFindHost](https://developer.apple.com/documentation/foundation/urlerror/code/2883157-cannotfindhost))
   ///- MacOS ([Official API - URLError.cannotFindHost](https://developer.apple.com/documentation/foundation/urlerror/code/2883157-cannotfindhost))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_HOST_NAME_NOT_RESOLVED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final HOST_LOOKUP =
       WebResourceErrorType._internalMultiPlatform('HOST_LOOKUP', () {
     switch (defaultTargetPlatform) {
@@ -567,6 +592,8 @@ class WebResourceErrorType {
         return -1003;
       case TargetPlatform.macOS:
         return -1003;
+      case TargetPlatform.windows:
+        return 13;
       default:
         break;
     }
@@ -611,6 +638,7 @@ class WebResourceErrorType {
   ///**Officially Supported Platforms/Implementations**:
   ///- iOS ([Official API - URLError.networkConnectionLost](https://developer.apple.com/documentation/foundation/urlerror/2293759-networkconnectionlost))
   ///- MacOS ([Official API - URLError.networkConnectionLost](https://developer.apple.com/documentation/foundation/urlerror/2293759-networkconnectionlost))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_DISCONNECTED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final NETWORK_CONNECTION_LOST =
       WebResourceErrorType._internalMultiPlatform('NETWORK_CONNECTION_LOST',
           () {
@@ -619,6 +647,8 @@ class WebResourceErrorType {
         return -1005;
       case TargetPlatform.macOS:
         return -1005;
+      case TargetPlatform.windows:
+        return 11;
       default:
         break;
     }
@@ -678,6 +708,21 @@ class WebResourceErrorType {
     return null;
   });
 
+  ///Indicates that the request redirect failed.
+  ///
+  ///**Officially Supported Platforms/Implementations**:
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_REDIRECT_FAILED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
+  static final REDIRECT_FAILED =
+      WebResourceErrorType._internalMultiPlatform('REDIRECT_FAILED', () {
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.windows:
+        return 15;
+      default:
+        break;
+    }
+    return null;
+  });
+
   ///A redirect was specified by way of server response code, but the server didn’t accompany this code with a redirect URL.
   ///
   ///**Officially Supported Platforms/Implementations**:
@@ -716,6 +761,20 @@ class WebResourceErrorType {
     return null;
   });
 
+  ///Indicates that the connection was reset.
+  ///
+  ///**Officially Supported Platforms/Implementations**:
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_CONNECTION_RESET](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
+  static final RESET = WebResourceErrorType._internalMultiPlatform('RESET', () {
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.windows:
+        return 10;
+      default:
+        break;
+    }
+    return null;
+  });
+
   ///A requested resource couldn't be retrieved.
   ///This error can indicate a file-not-found situation, or decoding problems that prevent data from being processed correctly.
   ///
@@ -830,12 +889,28 @@ class WebResourceErrorType {
     return null;
   });
 
+  ///Indicates that the host is unreachable.
+  ///
+  ///**Officially Supported Platforms/Implementations**:
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_SERVER_UNREACHABLE](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
+  static final SERVER_UNREACHABLE =
+      WebResourceErrorType._internalMultiPlatform('SERVER_UNREACHABLE', () {
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.windows:
+        return 6;
+      default:
+        break;
+    }
+    return null;
+  });
+
   ///Connection timed out.
   ///
   ///**Officially Supported Platforms/Implementations**:
   ///- Android native WebView ([Official API - WebViewClient.ERROR_TIMEOUT](https://developer.android.com/reference/android/webkit/WebViewClient#ERROR_TIMEOUT))
   ///- iOS ([Official API - URLError.timedOut](https://developer.apple.com/documentation/foundation/urlerror/code/2883027-timedout))
   ///- MacOS ([Official API - URLError.timedOut](https://developer.apple.com/documentation/foundation/urlerror/code/2883027-timedout))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_TIMEOUT](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final TIMEOUT =
       WebResourceErrorType._internalMultiPlatform('TIMEOUT', () {
     switch (defaultTargetPlatform) {
@@ -845,6 +920,8 @@ class WebResourceErrorType {
         return -1001;
       case TargetPlatform.macOS:
         return -1001;
+      case TargetPlatform.windows:
+        return 7;
       default:
         break;
     }
@@ -887,12 +964,28 @@ class WebResourceErrorType {
     return null;
   });
 
+  ///Indicates that an unexpected error occurred.
+  ///
+  ///**Officially Supported Platforms/Implementations**:
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_UNEXPECTED_ERROR](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
+  static final UNEXPECTED_ERROR =
+      WebResourceErrorType._internalMultiPlatform('UNEXPECTED_ERROR', () {
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.windows:
+        return 16;
+      default:
+        break;
+    }
+    return null;
+  });
+
   ///The URL Loading System encountered an error that it can’t interpret.
   ///
   ///**Officially Supported Platforms/Implementations**:
   ///- Android native WebView ([Official API - WebViewClient.ERROR_UNKNOWN](https://developer.android.com/reference/android/webkit/WebViewClient#ERROR_UNKNOWN))
   ///- iOS ([Official API - URLError.unknown](https://developer.apple.com/documentation/foundation/urlerror/2293357-unknown))
   ///- MacOS ([Official API - URLError.unknown](https://developer.apple.com/documentation/foundation/urlerror/2293357-unknown))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_UNKNOWN](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final UNKNOWN =
       WebResourceErrorType._internalMultiPlatform('UNKNOWN', () {
     switch (defaultTargetPlatform) {
@@ -902,6 +995,8 @@ class WebResourceErrorType {
         return -1;
       case TargetPlatform.macOS:
         return -1;
+      case TargetPlatform.windows:
+        return 0;
       default:
         break;
     }
@@ -982,6 +1077,7 @@ class WebResourceErrorType {
   ///**Officially Supported Platforms/Implementations**:
   ///- iOS ([Official API - URLError.userAuthenticationRequired](https://developer.apple.com/documentation/foundation/urlerror/2293560-userauthenticationrequired))
   ///- MacOS ([Official API - URLError.userAuthenticationRequired](https://developer.apple.com/documentation/foundation/urlerror/2293560-userauthenticationrequired))
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_VALID_AUTHENTICATION_CREDENTIALS_REQUIRED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
   static final USER_AUTHENTICATION_REQUIRED =
       WebResourceErrorType._internalMultiPlatform(
           'USER_AUTHENTICATION_REQUIRED', () {
@@ -990,6 +1086,8 @@ class WebResourceErrorType {
         return -1013;
       case TargetPlatform.macOS:
         return -1013;
+      case TargetPlatform.windows:
+        return 17;
       default:
         break;
     }
@@ -1016,6 +1114,22 @@ class WebResourceErrorType {
     return null;
   });
 
+  ///Indicates that user lacks proper authentication credentials for a proxy server.
+  ///
+  ///**Officially Supported Platforms/Implementations**:
+  ///- Windows ([Official API - COREWEBVIEW2_WEB_ERROR_STATUS_VALID_PROXY_AUTHENTICATION_REQUIRED](https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/win32/webview2-idl?view=webview2-1.0.2210.55#corewebview2_web_error_status))
+  static final VALID_PROXY_AUTHENTICATION_REQUIRED =
+      WebResourceErrorType._internalMultiPlatform(
+          'VALID_PROXY_AUTHENTICATION_REQUIRED', () {
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.windows:
+        return 18;
+      default:
+        break;
+    }
+    return null;
+  });
+
   ///A server reported that a URL has a non-zero content length, but terminated the network connection gracefully without sending any data.
   ///
   ///**Officially Supported Platforms/Implementations**:
@@ -1057,6 +1171,7 @@ class WebResourceErrorType {
     WebResourceErrorType.CANNOT_WRITE_TO_FILE,
     WebResourceErrorType.CLIENT_CERTIFICATE_REJECTED,
     WebResourceErrorType.CLIENT_CERTIFICATE_REQUIRED,
+    WebResourceErrorType.CONNECTION_ABORTED,
     WebResourceErrorType.DATA_LENGTH_EXCEEDS_MAXIMUM,
     WebResourceErrorType.DATA_NOT_ALLOWED,
     WebResourceErrorType.DOWNLOAD_DECODING_FAILED_MID_STREAM,
@@ -1072,17 +1187,21 @@ class WebResourceErrorType {
     WebResourceErrorType.NOT_CONNECTED_TO_INTERNET,
     WebResourceErrorType.NO_PERMISSIONS_TO_READ_FILE,
     WebResourceErrorType.PROXY_AUTHENTICATION,
+    WebResourceErrorType.REDIRECT_FAILED,
     WebResourceErrorType.REDIRECT_TO_NON_EXISTENT_LOCATION,
     WebResourceErrorType.REQUEST_BODY_STREAM_EXHAUSTED,
+    WebResourceErrorType.RESET,
     WebResourceErrorType.RESOURCE_UNAVAILABLE,
     WebResourceErrorType.SECURE_CONNECTION_FAILED,
     WebResourceErrorType.SERVER_CERTIFICATE_HAS_BAD_DATE,
     WebResourceErrorType.SERVER_CERTIFICATE_HAS_UNKNOWN_ROOT,
     WebResourceErrorType.SERVER_CERTIFICATE_NOT_YET_VALID,
     WebResourceErrorType.SERVER_CERTIFICATE_UNTRUSTED,
+    WebResourceErrorType.SERVER_UNREACHABLE,
     WebResourceErrorType.TIMEOUT,
     WebResourceErrorType.TOO_MANY_REDIRECTS,
     WebResourceErrorType.TOO_MANY_REQUESTS,
+    WebResourceErrorType.UNEXPECTED_ERROR,
     WebResourceErrorType.UNKNOWN,
     WebResourceErrorType.UNSAFE_RESOURCE,
     WebResourceErrorType.UNSUPPORTED_AUTH_SCHEME,
@@ -1090,6 +1209,7 @@ class WebResourceErrorType {
     WebResourceErrorType.USER_AUTHENTICATION_FAILED,
     WebResourceErrorType.USER_AUTHENTICATION_REQUIRED,
     WebResourceErrorType.USER_CANCELLED_AUTHENTICATION,
+    WebResourceErrorType.VALID_PROXY_AUTHENTICATION_REQUIRED,
     WebResourceErrorType.ZERO_BYTE_RESOURCE,
   ].toSet();
 

flutter_inappwebview_windows/lib/src/in_app_browser/in_app_browser.dart

@@ -65,7 +65,7 @@ class WindowsInAppBrowser extends PlatformInAppBrowser with ChannelController {
     return _staticValue;
   }
 
-  WindowsInAppBrowserCreationParams get _macosParams =>
+  WindowsInAppBrowserCreationParams get _windowsParams =>
       params as WindowsInAppBrowserCreationParams;
 
   static const MethodChannel _staticChannel =
@@ -95,7 +95,7 @@ class WindowsInAppBrowser extends PlatformInAppBrowser with ChannelController {
         channel!,
         this,
         this.initialUserScripts);
-    _macosParams.findInteractionController?.init(id);
+    _windowsParams.findInteractionController?.init(id);
   }
 
   _debugLog(String method, dynamic args) {

flutter_inappwebview_windows/windows/CMakeLists.txt

@@ -49,12 +49,11 @@ add_custom_command(
 
 # Any new source files that you add to the plugin should be added here.
 list(APPEND PLUGIN_SOURCES
-  "flutter_inappwebview_windows_base_plugin.h"
-  "flutter_inappwebview_windows_base_plugin.cpp"
   "flutter_inappwebview_windows_plugin.cpp"
   "flutter_inappwebview_windows_plugin.h"
   "utils/strconv.h"
   "utils/util.h"
+  "utils/flutter.h"
   "types/channel_delegate.cpp"
   "types/channel_delegate.h"
   "types/base_callback_result.h"
@@ -62,6 +61,12 @@ list(APPEND PLUGIN_SOURCES
   "types/url_request.h"
   "types/navigation_action.cpp"
   "types/navigation_action.h"
+  "types/web_resource_error.cpp"
+  "types/web_resource_error.h"
+  "types/web_resource_request.cpp"
+  "types/web_resource_request.h"
+  "types/web_resource_response.cpp"
+  "types/web_resource_response.h"
   "in_app_webview/in_app_webview.cpp"
   "in_app_webview/in_app_webview.h"
   "in_app_webview/webview_channel_delegate.cpp"

flutter_inappwebview_windows/windows/flutter_inappwebview_windows_base_plugin.cpp

@@ -1,14 +0,0 @@
-#include "flutter_inappwebview_windows_base_plugin.h"
-
-namespace flutter_inappwebview_plugin
-{
-	FlutterInappwebviewWindowsBasePlugin::FlutterInappwebviewWindowsBasePlugin(flutter::PluginRegistrarWindows* registrar) : registrar(registrar)
-	{
-
-	}
-
-	FlutterInappwebviewWindowsBasePlugin::~FlutterInappwebviewWindowsBasePlugin()
-	{
-
-	}
-}

flutter_inappwebview_windows/windows/flutter_inappwebview_windows_base_plugin.h

@@ -1,18 +0,0 @@
-#ifndef FLUTTER_INAPPWEBVIEW_PLUGIN_BASE_PLUGIN_H_
-#define FLUTTER_INAPPWEBVIEW_PLUGIN_BASE_PLUGIN_H_
-
-#include <flutter/plugin_registrar_windows.h>
-
-namespace flutter_inappwebview_plugin
-{
-    class FlutterInappwebviewWindowsBasePlugin : public flutter::Plugin, public std::enable_shared_from_this<FlutterInappwebviewWindowsBasePlugin> {
-    public:
-        flutter::PluginRegistrarWindows* registrar;
-
-        FlutterInappwebviewWindowsBasePlugin(flutter::PluginRegistrarWindows* registrar);
-
-        virtual ~FlutterInappwebviewWindowsBasePlugin();
-    };
-}
-
-#endif //FLUTTER_INAPPWEBVIEW_PLUGIN_BASE_PLUGIN_H_

flutter_inappwebview_windows/windows/flutter_inappwebview_windows_plugin.cpp

@@ -3,6 +3,8 @@
 #include <flutter/method_channel.h>
 #include <flutter/plugin_registrar_windows.h>
 
+#include "in_app_browser/in_app_browser_manager.h"
+
 namespace flutter_inappwebview_plugin
 {
     // static
@@ -13,7 +15,7 @@ namespace flutter_inappwebview_plugin
     }
 
     FlutterInappwebviewWindowsPlugin::FlutterInappwebviewWindowsPlugin(flutter::PluginRegistrarWindows* registrar)
-        : FlutterInappwebviewWindowsBasePlugin(registrar)
+        : registrar(registrar)
     {
         inAppBrowserManager = std::make_unique<InAppBrowserManager>(this);
     }

flutter_inappwebview_windows/windows/flutter_inappwebview_windows_plugin.h

@@ -4,16 +4,13 @@
 #include <flutter/method_channel.h>
 #include <flutter/plugin_registrar_windows.h>
 
-#include <memory>
-
-#include "flutter_inappwebview_windows_base_plugin.h"
-
-#include "in_app_browser/in_app_browser_manager.h"
-
 namespace flutter_inappwebview_plugin
 {
-    class FlutterInappwebviewWindowsPlugin : public FlutterInappwebviewWindowsBasePlugin {
+    class InAppBrowserManager;
+
+    class FlutterInappwebviewWindowsPlugin : public flutter::Plugin {
     public:
+        flutter::PluginRegistrarWindows* registrar;
         std::unique_ptr<InAppBrowserManager> inAppBrowserManager;
 
         static void RegisterWithRegistrar(flutter::PluginRegistrarWindows* registrar);

flutter_inappwebview_windows/windows/in_app_browser/in_app_browser.cpp

@@ -1,33 +1,11 @@
 #include <Windows.h>
 #include "in_app_browser.h"
-
-#include <cstdint>
-#include <memory>
-
-#include "flutter/event_channel.h"
-#include "flutter/plugin_registrar.h"
-#include "flutter/plugin_registrar_windows.h"
-#include "flutter/method_channel.h"
-#include "flutter/encodable_value.h"
-
-#include <stdlib.h>
-#include <string>
-#include <tchar.h>
-#include <wil/wrl.h>
-#include <wil/com.h>
-#include "../utils/strconv.h"
 #include "../utils/util.h"
-
+#include "in_app_browser_manager.h"
-#include <WebView2.h>
-#include <WebView2EnvironmentOptions.h>
 
 namespace flutter_inappwebview_plugin
 {
-	using namespace Microsoft::WRL;
+	InAppBrowser::InAppBrowser(FlutterInappwebviewWindowsPlugin* plugin, const InAppBrowserCreationParams& params)
-
-	const wchar_t* CLASS_NAME = L"InAppBrowser";
-
-	InAppBrowser::InAppBrowser(FlutterInappwebviewWindowsBasePlugin* plugin, const InAppBrowserCreationParams& params)
 		: plugin(plugin),		
 		m_hInstance(GetModuleHandle(nullptr)),
 		id(params.id),
@@ -35,7 +13,7 @@ namespace flutter_inappwebview_plugin
 		channelDelegate(std::make_unique<InAppBrowserChannelDelegate>(id, plugin->registrar->messenger()))
 	{
 		WNDCLASS wndClass = {};
-		wndClass.lpszClassName = CLASS_NAME;
+		wndClass.lpszClassName = InAppBrowser::CLASS_NAME;
 		wndClass.hInstance = m_hInstance;
 		wndClass.hIcon = LoadIcon(NULL, IDI_WINLOGO);
 		wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
@@ -45,8 +23,8 @@ namespace flutter_inappwebview_plugin
 
 		m_hWnd = CreateWindowEx(
 			0,                              // Optional window styles.
-			CLASS_NAME,                     // Window class
+			InAppBrowser::CLASS_NAME,		// Window class
-			L"Learn to Program Windows",    // Window text
+			L"",							// Window text
 			WS_OVERLAPPEDWINDOW,			// Window style
 
 			// Size and position
@@ -186,15 +164,19 @@ namespace flutter_inappwebview_plugin
 		) noexcept {
 		switch (message) {
 		case WM_DESTROY: {
-			webView.reset();
-
 			// might receive multiple WM_DESTROY messages.
 			if (!destroyed_) {
 				destroyed_ = true;
 
+				webView.reset();
+
 				if (channelDelegate) {
 					channelDelegate->onExit();
 				}
+
+				if (plugin && plugin->inAppBrowserManager) {
+					plugin->inAppBrowserManager->browsers.erase(id);
+				}
 			}
 			return 0;
 		}

flutter_inappwebview_windows/windows/in_app_browser/in_app_browser.h

@@ -6,7 +6,7 @@
 #include <optional>
 
 #include <wil/com.h>
-#include "../flutter_inappwebview_windows_base_plugin.h"
+#include "../flutter_inappwebview_windows_plugin.h"
 #include "../in_app_webview/in_app_webview.h"
 #include "../types/url_request.h"
 #include "in_app_browser_channel_delegate.h"
@@ -22,19 +22,20 @@ namespace flutter_inappwebview_plugin
 	class InAppBrowser {
 	public:
 		static inline const std::string METHOD_CHANNEL_NAME_PREFIX = "com.pichillilorenzo/flutter_inappbrowser_";
+		static inline const wchar_t* CLASS_NAME = L"InAppBrowser";
 
 		static LRESULT CALLBACK WndProc(HWND window,
 			UINT message,
 			WPARAM wparam,
 			LPARAM lparam) noexcept;
 
-		FlutterInappwebviewWindowsBasePlugin* plugin;
+		FlutterInappwebviewWindowsPlugin* plugin;
 		std::string id;
 		std::optional<URLRequest> initialUrlRequest;
 		std::unique_ptr<InAppWebView> webView;
 		std::unique_ptr<InAppBrowserChannelDelegate> channelDelegate;
 
-		InAppBrowser(FlutterInappwebviewWindowsBasePlugin* plugin, const InAppBrowserCreationParams& params);
+		InAppBrowser(FlutterInappwebviewWindowsPlugin* plugin, const InAppBrowserCreationParams& params);
 		~InAppBrowser();
 
 	private:

flutter_inappwebview_windows/windows/in_app_browser/in_app_browser_channel_delegate.cpp

@@ -5,7 +5,7 @@
 
 namespace flutter_inappwebview_plugin
 {
-    InAppBrowserChannelDelegate::InAppBrowserChannelDelegate(const std::string id, flutter::BinaryMessenger* messenger)
+    InAppBrowserChannelDelegate::InAppBrowserChannelDelegate(const std::string& id, flutter::BinaryMessenger* messenger)
             : ChannelDelegate(messenger, InAppBrowser::METHOD_CHANNEL_NAME_PREFIX + id)
     {
 

flutter_inappwebview_windows/windows/in_app_browser/in_app_browser_channel_delegate.h

@@ -11,7 +11,7 @@ namespace flutter_inappwebview_plugin
     class InAppBrowserChannelDelegate : public ChannelDelegate
     {
     public:
-        InAppBrowserChannelDelegate(const std::string id, flutter::BinaryMessenger* messenger);
+        InAppBrowserChannelDelegate(const std::string& id, flutter::BinaryMessenger* messenger);
         ~InAppBrowserChannelDelegate();
 
         void HandleMethodCall(

flutter_inappwebview_windows/windows/in_app_browser/in_app_browser_manager.cpp

@@ -1,16 +1,17 @@
 #include <memory>
 #include <flutter/method_channel.h>
 #include <flutter/standard_method_codec.h>
+#include <optional>
 
 #include "in_app_browser_manager.h"
 
 #include "../types/url_request.h"
 
-#include "../utils/util.h"
+#include "../utils/flutter.h"
 
 namespace flutter_inappwebview_plugin
 {
-	InAppBrowserManager::InAppBrowserManager(FlutterInappwebviewWindowsBasePlugin* plugin)
+	InAppBrowserManager::InAppBrowserManager(FlutterInappwebviewWindowsPlugin* plugin)
 		: plugin(plugin), ChannelDelegate(plugin->registrar->messenger(), InAppBrowserManager::METHOD_CHANNEL_NAME)
 	{
 
@@ -31,16 +32,16 @@ namespace flutter_inappwebview_plugin
 
 	void InAppBrowserManager::open(const flutter::EncodableMap* arguments)
 	{
-		auto id = std::get<std::string>(arguments->at(flutter::EncodableValue("id")));
+		auto id = get_fl_map_value<std::string>(*arguments, "id");
-		auto urlRequestMap = std::get_if<flutter::EncodableMap>(&arguments->at(flutter::EncodableValue("urlRequest")));
+		auto urlRequestMap = get_optional_fl_map_value<flutter::EncodableMap>(*arguments, "urlRequest");
-		auto urlRequest = make_pointer_optional<URLRequest>(new URLRequest(*urlRequestMap));
+		std::optional<URLRequest> urlRequest = urlRequestMap.has_value() ? std::make_optional<URLRequest>(urlRequestMap.value()) : std::optional<URLRequest>{};
 
 		InAppBrowserCreationParams params = {
 			id,
 			urlRequest
 		};
 		auto inAppBrowser = std::make_unique<InAppBrowser>(plugin, params);
-		browsers[id] = std::move(inAppBrowser);
+		browsers.insert({ id, std::move(inAppBrowser) });
 	}
 
 	InAppBrowserManager::~InAppBrowserManager()

flutter_inappwebview_windows/windows/in_app_browser/in_app_browser_manager.h

@@ -6,7 +6,7 @@
 #include <flutter/method_channel.h>
 #include <flutter/standard_message_codec.h>
 
-#include "../flutter_inappwebview_windows_base_plugin.h"
+#include "../flutter_inappwebview_windows_plugin.h"
 
 #include "in_app_browser.h"
 
@@ -19,10 +19,10 @@ namespace flutter_inappwebview_plugin
 	public:
 		static inline const std::string METHOD_CHANNEL_NAME = "com.pichillilorenzo/flutter_inappbrowser";
 
-		FlutterInappwebviewWindowsBasePlugin* plugin;
+		FlutterInappwebviewWindowsPlugin* plugin;
 		std::map<std::string, std::unique_ptr<InAppBrowser>> browsers;
 
-		InAppBrowserManager(FlutterInappwebviewWindowsBasePlugin* plugin);
+		InAppBrowserManager(FlutterInappwebviewWindowsPlugin* plugin);
 		~InAppBrowserManager();
 
 		void HandleMethodCall(

flutter_inappwebview_windows/windows/in_app_webview/in_app_webview.cpp

@@ -6,18 +6,20 @@
 #include <Shlwapi.h>
 #include "../utils/strconv.h"
 #include "../utils/util.h"
+#include "../types/web_resource_request.h"
+#include "../types/web_resource_error.h"
 
 namespace flutter_inappwebview_plugin
 {
 	using namespace Microsoft::WRL;
 
-	InAppWebView::InAppWebView(FlutterInappwebviewWindowsBasePlugin* plugin, std::variant<std::string, int> id, const HWND parentWindow, const std::function<void()> completionHandler)
+	InAppWebView::InAppWebView(FlutterInappwebviewWindowsPlugin* plugin, const std::variant<std::string, int>& id, const HWND parentWindow, const std::function<void()> completionHandler)
 		: plugin(plugin), id(id), channelDelegate(std::make_unique<WebViewChannelDelegate>(this, plugin->registrar->messenger()))
 	{
 		createWebView(parentWindow, completionHandler);
 	}
 
-	InAppWebView::InAppWebView(FlutterInappwebviewWindowsBasePlugin* plugin, std::variant<std::string, int> id, const HWND parentWindow, const std::string& channelName, const std::function<void()> completionHandler)
+	InAppWebView::InAppWebView(FlutterInappwebviewWindowsPlugin* plugin, const std::variant<std::string, int>& id, const HWND parentWindow, const std::string& channelName, const std::function<void()> completionHandler)
 		: plugin(plugin), id(id), channelDelegate(std::make_unique<WebViewChannelDelegate>(this, plugin->registrar->messenger(), channelName))
 	{
 		createWebView(parentWindow, completionHandler);
@@ -29,7 +31,7 @@ namespace flutter_inappwebview_plugin
 			Callback<ICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler>(
 				[parentWindow, completionHandler, this](HRESULT result, ICoreWebView2Environment* env) -> HRESULT {
 					webViewEnv = env;
-					// Create a CoreWebView2Controller and get the associated CoreWebView2 whose parent is the main window hWnd
+					// Create a CoreWebView2Controller and get the associated CoreWebView2 whose parent is the main window HWND
 					env->CreateCoreWebView2Controller(parentWindow, Callback<ICoreWebView2CreateCoreWebView2ControllerCompletedHandler>(
 						[parentWindow, completionHandler, this](HRESULT result, ICoreWebView2Controller* controller) -> HRESULT {
 							if (controller != nullptr) {
@@ -67,9 +69,9 @@ namespace flutter_inappwebview_plugin
 					}
 					
 					wil::unique_cotaskmem_string uri = nullptr;
-					std::optional<std::string> url = SUCCEEDED(args->get_Uri(&uri)) ? wide_to_utf8(std::wstring(uri.get())) : std::optional<std::string>{};
+					std::optional<std::string> url = SUCCEEDED(args->get_Uri(&uri)) ? wide_to_utf8(uri.get()) : std::optional<std::string>{};
 
-					wil::unique_cotaskmem_string method = nullptr;
+					wil::unique_cotaskmem_string requestMethod = nullptr;
 					wil::com_ptr<ICoreWebView2HttpRequestHeaders> requestHeaders = nullptr;
 					std::optional<std::map<std::string, std::string>> headers = std::optional<std::map<std::string, std::string>>{};
 					if (SUCCEEDED(args->get_RequestHeaders(&requestHeaders))) {
@@ -83,27 +85,34 @@ namespace flutter_inappwebview_plugin
 							wil::unique_cotaskmem_string value;
 
 							if (SUCCEEDED(iterator->GetCurrentHeader(&name, &value))) {
-								headers->insert({ wide_to_utf8(std::wstring(name.get())), wide_to_utf8(std::wstring(value.get())) });
+								headers->insert({ wide_to_utf8(name.get()), wide_to_utf8(value.get()) });
 							}
 
 							BOOL hasNext = FALSE;
 							iterator->MoveNext(&hasNext);
 						}
 
-						requestHeaders->GetHeader(L"Flutter-InAppWebView-Request-Method", &method);
+						requestHeaders->GetHeader(L"Flutter-InAppWebView-Request-Method", &requestMethod);
 						requestHeaders->RemoveHeader(L"Flutter-InAppWebView-Request-Method");
 					}
 
-					if (callShouldOverrideUrlLoading && method == nullptr) {
+					std::optional<std::string> method = requestMethod ? wide_to_utf8(requestMethod.get()) : std::optional<std::string>{};
-						// for some reason, we can't cancel and load an URL with other HTTP methods other than GET,
-						// so ignore the shouldOverrideUrlLoading event.
 
-						auto urlRequest = std::make_shared<URLRequest>(url, std::nullopt, headers, std::nullopt);
+					auto urlRequest = std::make_shared<URLRequest>(url, method, headers, std::nullopt);
-						auto navigationAction = std::make_unique<NavigationAction>(
+					auto navigationAction = std::make_shared<NavigationAction>(
 						urlRequest,
 						true
 					);
 
+					UINT64 navigationId;
+					if (SUCCEEDED(args->get_NavigationId(&navigationId))) {
+						navigationActions.insert({navigationId, navigationAction});
+					}
+
+					if (callShouldOverrideUrlLoading && requestMethod == nullptr) {
+						// for some reason, we can't cancel and load an URL with other HTTP methods than GET,
+						// so ignore the shouldOverrideUrlLoading event.
+						
 						auto callback = std::make_unique<WebViewChannelDelegate::ShouldOverrideUrlLoadingCallback>();
 						callback->nonNullSuccess = [this, urlRequest](const NavigationActionPolicy actionPolicy) {
 								callShouldOverrideUrlLoading = false;
@@ -137,9 +146,17 @@ namespace flutter_inappwebview_plugin
 		webView->add_NavigationCompleted(
 			Callback<ICoreWebView2NavigationCompletedEventHandler>(
 				[this](ICoreWebView2* sender, ICoreWebView2NavigationCompletedEventArgs* args) {
-					COREWEBVIEW2_WEB_ERROR_STATUS web_error_status;
+					std::shared_ptr<NavigationAction> navigationAction;
-					args->get_WebErrorStatus(&web_error_status);
+					UINT64 navigationId;
-					debugLog("WebErrorStatus " + std::to_string(web_error_status) + "\n");
+					if (SUCCEEDED(args->get_NavigationId(&navigationId))) {
+						navigationAction = map_at_or_null(navigationActions, navigationId);
+						if (navigationAction) {
+							navigationActions.erase(navigationId);
+						}
+					}
+
+					COREWEBVIEW2_WEB_ERROR_STATUS webErrorType = COREWEBVIEW2_WEB_ERROR_STATUS_UNKNOWN;
+					args->get_WebErrorStatus(&webErrorType);
 
 					BOOL isSuccess;
 					args->get_IsSuccess(&isSuccess);
@@ -150,7 +167,21 @@ namespace flutter_inappwebview_plugin
 						if (isSuccess) {
 							channelDelegate->onLoadStop(url);
 						}
+						else if (!InAppWebView::isSslError(webErrorType) && navigationAction) {
+							auto webResourceRequest = std::make_unique<WebResourceRequest>(url, navigationAction->request->method, navigationAction->request->headers, navigationAction->isForMainFrame);
+							int httpStatusCode = 0;
+							wil::com_ptr<ICoreWebView2NavigationCompletedEventArgs2> args2;
+							if (SUCCEEDED(args->QueryInterface(IID_PPV_ARGS(&args2))) && SUCCEEDED(args2->get_HttpStatusCode(&httpStatusCode)) && httpStatusCode >= 400) {
+								auto webResourceResponse = std::make_unique<WebResourceResponse>(httpStatusCode);
+								channelDelegate->onReceivedHttpError(std::move(webResourceRequest), std::move(webResourceResponse));
 							}
+							else if (httpStatusCode < 400) {
+								auto webResourceError = std::make_unique<WebResourceError>(WebErrorStatusDescription[webErrorType], webErrorType);
+								channelDelegate->onReceivedError(std::move(webResourceRequest), std::move(webResourceError));
+							}
+						}
+					}
+
 					return S_OK;
 				}
 		).Get(), nullptr);
@@ -159,10 +190,10 @@ namespace flutter_inappwebview_plugin
 	std::optional<std::string> InAppWebView::getUrl() const
 	{
 		LPWSTR uri = nullptr;
-		return SUCCEEDED(webView->get_Source(&uri)) ? wide_to_utf8(std::wstring(uri)) : std::optional<std::string>{};
+		return SUCCEEDED(webView->get_Source(&uri)) ? wide_to_utf8(uri) : std::optional<std::string>{};
 	}
 
-	void InAppWebView::loadUrl(const URLRequest urlRequest) const
+	void InAppWebView::loadUrl(const URLRequest& urlRequest) const
 	{
 		if (!webView || !urlRequest.url.has_value()) {
 			return;
@@ -191,7 +222,7 @@ namespace flutter_inappwebview_plugin
 			);
 			wil::com_ptr<ICoreWebView2HttpRequestHeaders> requestHeaders;
 			if (SUCCEEDED(webResourceRequest->get_Headers(&requestHeaders))) {
-				if (urlRequest.method.has_value() && urlRequest.method.value().compare("GET") != 0) {
+				if (method.compare(L"GET") != 0) {
 					requestHeaders->SetHeader(L"Flutter-InAppWebView-Request-Method", method.c_str());
 				}
 				if (urlRequest.headers.has_value()) {
@@ -208,6 +239,10 @@ namespace flutter_inappwebview_plugin
 		}
 	}
 
+	bool InAppWebView::isSslError(const COREWEBVIEW2_WEB_ERROR_STATUS& webErrorStatus) {
+		return webErrorStatus >= COREWEBVIEW2_WEB_ERROR_STATUS_CERTIFICATE_COMMON_NAME_IS_INCORRECT && webErrorStatus <= COREWEBVIEW2_WEB_ERROR_STATUS_CERTIFICATE_IS_INVALID;
+	}
+
 	InAppWebView::~InAppWebView()
 	{
 		debugLog("dealloc InAppWebView");
@@ -217,6 +252,7 @@ namespace flutter_inappwebview_plugin
 		if (webViewController) {
 			webViewController->Close();
 		}
+		navigationActions.clear();
 		plugin = nullptr;
 	}
 }

flutter_inappwebview_windows/windows/in_app_webview/in_app_webview.h

@@ -6,8 +6,9 @@
 #include <WebView2.h>
 #include <wil/com.h>
 #include "../types/url_request.h"
+#include "../types/navigation_action.h"
 #include "webview_channel_delegate.h"
-#include "../flutter_inappwebview_windows_base_plugin.h"
+#include "../flutter_inappwebview_windows_plugin.h"
 
 namespace flutter_inappwebview_plugin
 {
@@ -18,20 +19,22 @@ namespace flutter_inappwebview_plugin
 	public:
 		static inline const std::string METHOD_CHANNEL_NAME_PREFIX = "com.pichillilorenzo/flutter_inappwebview_";
 
-		FlutterInappwebviewWindowsBasePlugin* plugin;
+		const FlutterInappwebviewWindowsPlugin* plugin;
-		std::variant<std::string, int> id;
+		const std::variant<std::string, int> id;
 		wil::com_ptr<ICoreWebView2Environment> webViewEnv;
 		wil::com_ptr<ICoreWebView2Controller> webViewController;
 		wil::com_ptr<ICoreWebView2> webView;
-		std::unique_ptr<WebViewChannelDelegate> channelDelegate;
+		const std::unique_ptr<WebViewChannelDelegate> channelDelegate;
+		std::map<UINT64, std::shared_ptr<NavigationAction>> navigationActions = {};
 
-		InAppWebView(FlutterInappwebviewWindowsBasePlugin* plugin, std::variant<std::string, int> id, const HWND parentWindow, const std::function<void()> completionHandler);
+		InAppWebView(FlutterInappwebviewWindowsPlugin* plugin, const std::variant<std::string, int>& id, const HWND parentWindow, const std::function<void()> completionHandler);
-		InAppWebView(FlutterInappwebviewWindowsBasePlugin* plugin, std::variant<std::string, int> id, const HWND parentWindow, const std::string& channelName, const std::function<void()> completionHandler);
+		InAppWebView(FlutterInappwebviewWindowsPlugin* plugin, const std::variant<std::string, int>& id, const HWND parentWindow, const std::string& channelName, const std::function<void()> completionHandler);
 		~InAppWebView();
 
 		std::optional<std::string> getUrl() const;
-		void loadUrl(const URLRequest urlRequest) const;
+		void loadUrl(const URLRequest& urlRequest) const;
 
+		static bool isSslError(const COREWEBVIEW2_WEB_ERROR_STATUS& webErrorStatus);
 	private:
 		bool callShouldOverrideUrlLoading = true;
 		void createWebView(const HWND parentWindow, const std::function<void()> completionHandler);

flutter_inappwebview_windows/windows/in_app_webview/webview_channel_delegate.cpp

@@ -1,7 +1,7 @@
 #include "in_app_webview.h"
 #include "webview_channel_delegate.h"
 
-#include "../utils/util.h"
+#include "../utils/flutter.h"
 #include "../utils/strconv.h"
 #include "../types/base_callback_result.h"
 
@@ -38,43 +38,44 @@ namespace flutter_inappwebview_plugin
 		}
 
 		if (method_call.method_name().compare("getUrl") == 0) {
-			result->Success(optional_to_fl_value(webView->getUrl()));
+			result->Success(make_fl_value(webView->getUrl()));
-		} else if (method_call.method_name().compare("loadUrl") == 0) {
+		} 
+		else if (method_call.method_name().compare("loadUrl") == 0) {
 			auto& arguments = std::get<flutter::EncodableMap>(*method_call.arguments());
 			auto urlRequest = std::make_unique<URLRequest>(get_fl_map_value<flutter::EncodableMap>(arguments, "urlRequest"));
 			webView->loadUrl(*urlRequest);
-			result->Success(flutter::EncodableValue(true));
+			result->Success(make_fl_value(true));
 		}
 		else {
 			result->NotImplemented();
 		}
 	}
 
-	void WebViewChannelDelegate::onLoadStart(const std::optional<std::string> url) const
+	void WebViewChannelDelegate::onLoadStart(const std::optional<std::string>& url) const
 	{
 		if (!channel) {
 			return;
 		}
 
 		auto arguments = std::make_unique<flutter::EncodableValue>(flutter::EncodableMap {
-			{flutter::EncodableValue("url"), optional_to_fl_value(url)},
+			{flutter::EncodableValue("url"), make_fl_value(url)},
 		});
 		channel->InvokeMethod("onLoadStart", std::move(arguments));
 	}
 
-	void WebViewChannelDelegate::onLoadStop(const std::optional<std::string> url) const
+	void WebViewChannelDelegate::onLoadStop(const std::optional<std::string>& url) const
 	{
 		if (!channel) {
 			return;
 		}
 
 		auto arguments = std::make_unique<flutter::EncodableValue>(flutter::EncodableMap{
-			{flutter::EncodableValue("url"), optional_to_fl_value(url)},
+			{flutter::EncodableValue("url"), make_fl_value(url)},
 		});
 		channel->InvokeMethod("onLoadStop", std::move(arguments));
 	}
 
-	void WebViewChannelDelegate::shouldOverrideUrlLoading(std::shared_ptr<NavigationAction> navigationAction, std::unique_ptr<ShouldOverrideUrlLoadingCallback> callback)
+	void WebViewChannelDelegate::shouldOverrideUrlLoading(std::shared_ptr<NavigationAction> navigationAction, std::unique_ptr<ShouldOverrideUrlLoadingCallback> callback) const
 	{
 		if (!channel) {
 			return;
@@ -84,6 +85,32 @@ namespace flutter_inappwebview_plugin
 		channel->InvokeMethod("shouldOverrideUrlLoading", std::move(arguments), std::move(callback));
 	}
 
+	void WebViewChannelDelegate::onReceivedError(std::shared_ptr<WebResourceRequest> request, std::shared_ptr<WebResourceError> error) const
+	{
+		if (!channel) {
+			return;
+		}
+
+		auto arguments = std::make_unique<flutter::EncodableValue>(flutter::EncodableMap{
+			{flutter::EncodableValue("request"), request->toEncodableMap()},
+			{flutter::EncodableValue("error"), error->toEncodableMap()},
+		});
+		channel->InvokeMethod("onReceivedError", std::move(arguments));
+	}
+
+	void WebViewChannelDelegate::onReceivedHttpError(std::shared_ptr<WebResourceRequest> request, std::shared_ptr<WebResourceResponse> errorResponse) const
+	{
+		if (!channel) {
+			return;
+		}
+
+		auto arguments = std::make_unique<flutter::EncodableValue>(flutter::EncodableMap{
+			{flutter::EncodableValue("request"), request->toEncodableMap()},
+			{flutter::EncodableValue("errorResponse"), errorResponse->toEncodableMap()},
+			});
+		channel->InvokeMethod("onReceivedHttpError", std::move(arguments));
+	}
+
     WebViewChannelDelegate::~WebViewChannelDelegate()
 	{
 		debugLog("dealloc WebViewChannelDelegate");

flutter_inappwebview_windows/windows/in_app_webview/webview_channel_delegate.h

@@ -7,6 +7,9 @@
 #include "../types/channel_delegate.h"
 #include "../types/base_callback_result.h"
 #include "../types/navigation_action.h"
+#include "../types/web_resource_request.h"
+#include "../types/web_resource_error.h"
+#include "../types/web_resource_response.h"
 
 namespace flutter_inappwebview_plugin
 {
@@ -33,9 +36,11 @@ namespace flutter_inappwebview_plugin
             const flutter::MethodCall<flutter::EncodableValue>& method_call,
             std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result);
 
-        void onLoadStart(const std::optional<std::string> url) const;
+        void onLoadStart(const std::optional<std::string>& url) const;
-        void onLoadStop(const std::optional<std::string> url) const;
+        void onLoadStop(const std::optional<std::string>& url) const;
-        void shouldOverrideUrlLoading(std::shared_ptr<NavigationAction> navigationAction, std::unique_ptr<ShouldOverrideUrlLoadingCallback> callback);
+        void shouldOverrideUrlLoading(std::shared_ptr<NavigationAction> navigationAction, std::unique_ptr<ShouldOverrideUrlLoadingCallback> callback) const;
+        void WebViewChannelDelegate::onReceivedError(std::shared_ptr<WebResourceRequest> request, std::shared_ptr<WebResourceError> error) const;
+        void WebViewChannelDelegate::onReceivedHttpError(std::shared_ptr<WebResourceRequest> request, std::shared_ptr<WebResourceResponse> error) const;
     };
 }
 

flutter_inappwebview_windows/windows/types/channel_delegate.cpp

@@ -3,6 +3,8 @@
 
 #include "channel_delegate.h"
 
+#include "../utils/util.h"
+
 namespace flutter_inappwebview_plugin
 {
 	ChannelDelegate::ChannelDelegate(flutter::BinaryMessenger* messenger, const std::string& name) : messenger(messenger)

flutter_inappwebview_windows/windows/types/channel_delegate.h

@@ -3,11 +3,6 @@
 
 #include <flutter/method_channel.h>
 
-#include <memory>
-#include <set>
-
-#include "../flutter_inappwebview_windows_base_plugin.h"
-
 namespace flutter_inappwebview_plugin
 {
 	class ChannelDelegate

flutter_inappwebview_windows/windows/types/navigation_action.cpp

@@ -4,7 +4,7 @@
 
 namespace flutter_inappwebview_plugin
 {
-    NavigationAction::NavigationAction(std::shared_ptr<URLRequest> request, bool isForMainFrame)
+    NavigationAction::NavigationAction(std::shared_ptr<URLRequest> request, const bool& isForMainFrame)
             : request(std::move(request)), isForMainFrame(isForMainFrame)
     {
 

flutter_inappwebview_windows/windows/types/navigation_action.h

@@ -13,7 +13,7 @@ namespace flutter_inappwebview_plugin
         const std::shared_ptr<URLRequest> request;
         const bool isForMainFrame;
 
-        NavigationAction(std::shared_ptr<URLRequest> request, bool isForMainFrame);
+        NavigationAction(std::shared_ptr<URLRequest> request, const bool& isForMainFrame);
         ~NavigationAction() = default;
         flutter::EncodableMap toEncodableMap();
     };

flutter_inappwebview_windows/windows/types/url_request.cpp

@@ -1,19 +1,20 @@
 #include "url_request.h"
 
-#include "../utils/util.h"
+#include "../utils/flutter.h"
 
 namespace flutter_inappwebview_plugin
 {
-	URLRequest::URLRequest(std::optional<std::string> url, std::optional<std::string> method, std::optional<std::map<std::string, std::string>> headers, std::optional<std::vector<uint8_t>> body)
+	URLRequest::URLRequest(const std::optional<std::string>& url, const std::optional<std::string>& method,
+		const std::optional<std::map<std::string, std::string>>& headers, const std::optional<std::vector<uint8_t>>& body)
 		: url(url), method(method), headers(headers), body(body)
 	{
 
 	}
 
-	URLRequest::URLRequest(const flutter::EncodableMap map)
+	URLRequest::URLRequest(const flutter::EncodableMap& map)
 		: url(get_optional_fl_map_value<std::string>(map, "url")),
 		method(get_optional_fl_map_value<std::string>(map, "method")),
-		headers(get_optional_fl_map_value(map, "headers")),
+		headers(get_optional_fl_map_value<std::string, std::string>(map, "headers")),
 		body(get_optional_fl_map_value<std::vector<uint8_t>>(map, "body"))
 	{
 
@@ -22,10 +23,10 @@ namespace flutter_inappwebview_plugin
 	flutter::EncodableMap URLRequest::toEncodableMap()
 	{
 		return flutter::EncodableMap{
-			{flutter::EncodableValue("url"), optional_to_fl_value(url)},
+			{make_fl_value("url"), make_fl_value(url)},
-			{flutter::EncodableValue("method"), optional_to_fl_value(method)},
+			{make_fl_value("method"), make_fl_value(method)},
-			{flutter::EncodableValue("headers"), optional_to_fl_value(headers)},
+			{make_fl_value("headers"), make_fl_value(headers)},
-			{flutter::EncodableValue("body"), optional_to_fl_value(body)}
+			{make_fl_value("body"), make_fl_value(body)}
 		};
 	}
 }

flutter_inappwebview_windows/windows/types/url_request.h

@@ -15,8 +15,9 @@ namespace flutter_inappwebview_plugin
 		const std::optional<std::map<std::string, std::string>> headers;
 		const std::optional<std::vector<uint8_t>> body;
 
-		URLRequest(std::optional<std::string> url, std::optional<std::string> method, std::optional<std::map<std::string, std::string>> headers, std::optional<std::vector<uint8_t>> body);
+		URLRequest(const std::optional<std::string>& url, const std::optional<std::string>& method, 
-		URLRequest(const flutter::EncodableMap map);
+			const std::optional<std::map<std::string, std::string>>& headers, const std::optional<std::vector<uint8_t>>& body);
+		URLRequest(const flutter::EncodableMap& map);
 		~URLRequest() = default;
 		flutter::EncodableMap toEncodableMap();
 	};

flutter_inappwebview_windows/windows/types/web_resource_error.cpp

@@ -0,0 +1,27 @@
+#include "web_resource_error.h"
+
+#include "../utils/flutter.h"
+
+namespace flutter_inappwebview_plugin
+{
+    WebResourceError::WebResourceError(const std::string& description, const int type)
+            : description(description), type(type)
+    {
+
+    }
+
+    WebResourceError::WebResourceError(const flutter::EncodableMap& map)
+            : description(get_fl_map_value<std::string>(map, "description")),
+              type(get_fl_map_value<int>(map, "type"))
+    {
+
+    }
+
+    flutter::EncodableMap WebResourceError::toEncodableMap()
+    {
+        return flutter::EncodableMap{
+                {make_fl_value("description"), make_fl_value(description)},
+                {make_fl_value("type"), make_fl_value(type)}
+        };
+    }
+}

flutter_inappwebview_windows/windows/types/web_resource_error.h

@@ -0,0 +1,46 @@
+#ifndef FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_ERROR_H_
+#define FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_ERROR_H_
+
+#include <flutter/standard_method_codec.h>
+
+#include <optional>
+
+namespace flutter_inappwebview_plugin
+{
+    static const std::string WebErrorStatusDescription[] =
+    {
+        "Indicates that an unknown error occurred.",
+        "Indicates that the SSL certificate common name does not match the web address.",
+        "Indicates that the SSL certificate has expired.",
+        "Indicates that the SSL client certificate contains errors.",
+        "Indicates that the SSL certificate has been revoked.",
+        "Indicates that the SSL certificate is not valid.",
+        "Indicates that the host is unreachable.",
+        "Indicates that the connection has timed out.",
+        "Indicates that the server returned an invalid or unrecognized response.",
+        "Indicates that the connection was stopped.",
+        "Indicates that the connection was reset.",
+        "Indicates that the Internet connection has been lost.",
+        "Indicates that a connection to the destination was not established.",
+        "Indicates that the provided host name was not able to be resolved.",
+        "Indicates that the operation was canceled.",
+        "Indicates that the request redirect failed.",
+        "Indicates that an unexpected error occurred.",
+        "Indicates that user is prompted with a login, waiting on user action.",
+        "Indicates that user lacks proper authentication credentials for a proxy server.",
+    };
+
+    class WebResourceError
+    {
+    public:
+        const std::string description;
+        const int type;
+
+        WebResourceError(const std::string& description, const int type);
+        WebResourceError(const flutter::EncodableMap& map);
+        ~WebResourceError() = default;
+        flutter::EncodableMap toEncodableMap();
+    };
+}
+
+#endif //FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_ERROR_H_

flutter_inappwebview_windows/windows/types/web_resource_request.cpp

@@ -0,0 +1,32 @@
+#include "web_resource_request.h"
+
+#include "../utils/flutter.h"
+
+namespace flutter_inappwebview_plugin
+{
+    WebResourceRequest::WebResourceRequest(const std::optional<std::string>& url, const std::optional<std::string>& method,
+                                       const std::optional<std::map<std::string, std::string>>& headers, const std::optional<bool>& isForMainFrame)
+            : url(url), method(method), headers(headers), isForMainFrame(isForMainFrame)
+    {
+
+    }
+
+    WebResourceRequest::WebResourceRequest(const flutter::EncodableMap& map)
+            : url(get_optional_fl_map_value<std::string>(map, "url")),
+              method(get_optional_fl_map_value<std::string>(map, "method")),
+              headers(get_optional_fl_map_value<std::string, std::string>(map, "headers")),
+              isForMainFrame(get_optional_fl_map_value<bool>(map, "isForMainFrame"))
+    {
+
+    }
+
+    flutter::EncodableMap WebResourceRequest::toEncodableMap()
+    {
+        return flutter::EncodableMap{
+                {make_fl_value("url"), make_fl_value(url)},
+                {make_fl_value("method"), make_fl_value(method)},
+                {make_fl_value("headers"), make_fl_value(headers)},
+                {make_fl_value("isForMainFrame"), make_fl_value(isForMainFrame)}
+        };
+    }
+}

flutter_inappwebview_windows/windows/types/web_resource_request.h

@@ -0,0 +1,26 @@
+#ifndef FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_REQUEST_H_
+#define FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_REQUEST_H_
+
+#include <flutter/standard_method_codec.h>
+
+#include <optional>
+
+namespace flutter_inappwebview_plugin
+{
+    class WebResourceRequest
+    {
+    public:
+        const std::optional<std::string> url;
+        const std::optional<std::string> method;
+        const std::optional<std::map<std::string, std::string>> headers;
+        const std::optional<bool> isForMainFrame;
+
+        WebResourceRequest(const std::optional<std::string>& url, const std::optional<std::string>& method,
+                         const std::optional<std::map<std::string, std::string>>& headers, const std::optional<bool>& isForMainFrame);
+        WebResourceRequest(const flutter::EncodableMap& map);
+        ~WebResourceRequest() = default;
+        flutter::EncodableMap toEncodableMap();
+    };
+}
+
+#endif //FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_REQUEST_H_

flutter_inappwebview_windows/windows/types/web_resource_response.cpp

@@ -0,0 +1,25 @@
+#include "web_resource_response.h"
+
+#include "../utils/flutter.h"
+
+namespace flutter_inappwebview_plugin
+{
+    WebResourceResponse::WebResourceResponse(const std::optional<int>& statusCode) 
+        : statusCode(statusCode)
+    {
+
+    }
+
+    WebResourceResponse::WebResourceResponse(const flutter::EncodableMap& map) 
+        : statusCode(get_optional_fl_map_value<int>(map, "statusCode"))
+    {
+
+    }
+
+    flutter::EncodableMap WebResourceResponse::toEncodableMap()
+    {
+        return flutter::EncodableMap{
+                {make_fl_value("statusCode"), make_fl_value(statusCode)}
+        };
+    }
+}

flutter_inappwebview_windows/windows/types/web_resource_response.h

@@ -0,0 +1,22 @@
+#ifndef FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_RESPONSE_H_
+#define FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_RESPONSE_H_
+
+#include <flutter/standard_method_codec.h>
+
+#include <optional>
+
+namespace flutter_inappwebview_plugin
+{
+    class WebResourceResponse
+    {
+    public:
+        const std::optional<int> statusCode;
+
+        WebResourceResponse(const std::optional<int>& statusCode);
+        WebResourceResponse(const flutter::EncodableMap& map);
+        ~WebResourceResponse() = default;
+        flutter::EncodableMap toEncodableMap();
+    };
+}
+
+#endif //FLUTTER_INAPPWEBVIEW_PLUGIN_WEB_RESOURCE_RESPONSE_H_

flutter_inappwebview_windows/windows/utils/flutter.h

@@ -0,0 +1,77 @@
+#ifndef FLUTTER_INAPPWEBVIEW_PLUGIN_FLUTTER_UTIL_H_
+#define FLUTTER_INAPPWEBVIEW_PLUGIN_FLUTTER_UTIL_H_
+
+#include <string>
+#include <optional>
+#include <flutter/encodable_value.h>
+
+#include "util.h"
+
+namespace flutter_inappwebview_plugin
+{
+    static inline flutter::EncodableValue make_fl_value()
+    {
+        return flutter::EncodableValue();
+    }
+
+    template<typename T>
+    static inline flutter::EncodableValue make_fl_value(const T& val)
+    {
+        return flutter::EncodableValue(val);
+    }
+
+    template<typename T>
+    static inline flutter::EncodableValue make_fl_value(const T* val)
+    {
+        return val == nullptr ? make_fl_value() : flutter::EncodableValue(val);
+    }
+
+    template<typename T>
+    static inline flutter::EncodableValue make_fl_value(const std::optional<T>& optional)
+    {
+        return optional.has_value() ? make_fl_value(optional.value()) : make_fl_value();
+    }
+
+    static inline flutter::EncodableValue make_fl_value(const std::optional<std::map<std::string, std::string>>& optional)
+    {
+        if (!optional.has_value()) {
+            return make_fl_value();
+        }
+        auto& mapValue = optional.value();
+        auto encodableMap = flutter::EncodableMap{};
+        for (auto const& [key, val] : mapValue)
+        {
+            encodableMap.insert({ make_fl_value(key), make_fl_value(val) });
+        }
+        return encodableMap;
+    }
+
+    template<typename T>
+    static inline T get_fl_map_value(const flutter::EncodableMap& map, const char* string)
+    {
+        return std::get<T>(map.at(make_fl_value(string)));
+    }
+
+    template<typename T>
+    static inline std::optional<T> get_optional_fl_map_value(const flutter::EncodableMap& map, const char* string)
+    {
+        return make_pointer_optional<T>(std::get_if<T>(&map.at(make_fl_value(string))));
+    }
+
+    template<typename K, typename T>
+    static inline std::optional<std::map<K, T>> get_optional_fl_map_value(const flutter::EncodableMap& map, const char* string)
+    {
+        auto flMap = std::get_if<flutter::EncodableMap>(&map.at(make_fl_value(string)));
+        if (flMap) {
+            auto mapValue = std::map<K, T>{};
+            for (auto itr = flMap->begin(); itr != flMap->end(); itr++)
+            {
+                mapValue.insert({ std::get<K>(itr->first),  std::get<T>(itr->second) });
+            }
+            return make_pointer_optional<std::map<K, T>>(&mapValue);
+        }
+        return std::nullopt;
+    }
+}
+
+#endif //FLUTTER_INAPPWEBVIEW_PLUGIN_FLUTTER_UTIL_H_

flutter_inappwebview_windows/windows/utils/util.h

@@ -22,52 +22,7 @@ namespace flutter_inappwebview_plugin
 		return value == nullptr ? std::nullopt : std::make_optional<T>(*value);
 	}
 
-	template<typename T>
+	static inline std::string variant_to_string(const std::variant<std::string, int>& var)
-	static inline T get_fl_map_value(const flutter::EncodableMap map, const char* string)
-	{
-		return std::get<T>(map.at(flutter::EncodableValue(string)));
-	}
-
-	template<typename T>
-	static inline std::optional<T> get_optional_fl_map_value(const flutter::EncodableMap map, const char* string)
-	{
-		return make_pointer_optional<T>(std::get_if<T>(&map.at(flutter::EncodableValue(string))));
-	}
-
-	static inline std::optional<std::map<std::string, std::string>> get_optional_fl_map_value(const flutter::EncodableMap map, const char* string)
-	{
-		auto mapValue = std::map<std::string, std::string>{};
-		auto flMap = std::get_if<flutter::EncodableMap>(&map.at(flutter::EncodableValue(string)));
-		if (flMap) {
-			for (auto itr = flMap->begin(); itr != flMap->end(); itr++)
-			{
-				mapValue.insert({ std::get<std::string>(itr->first),  std::get<std::string>(itr->second) });
-			}
-		}
-		return make_pointer_optional<std::map<std::string, std::string>>(&mapValue);
-	}
-
-	template<typename T>
-	static inline flutter::EncodableValue optional_to_fl_value(const std::optional<T> optional)
-	{
-		return optional.has_value() ? flutter::EncodableValue(optional.value()) : flutter::EncodableValue();
-	}
-
-	static inline flutter::EncodableValue optional_to_fl_value(const std::optional<std::map<std::string, std::string>> optional)
-	{
-		if (!optional.has_value()) {
-			return flutter::EncodableValue();
-		}
-		auto& mapValue = optional.value();
-		auto encodableMap = flutter::EncodableMap{};
-		for (auto const& [key, val] : mapValue)
-		{
-			encodableMap.insert({ flutter::EncodableValue(key), flutter::EncodableValue(val) });
-		}
-		return encodableMap;
-	}
-
-	static inline std::string variant_to_string(std::variant<std::string, int> var)
 	{
 		return std::visit([](auto&& arg) {
 			using T = std::decay_t<decltype(arg)>;
@@ -79,6 +34,19 @@ namespace flutter_inappwebview_plugin
 				static_assert(always_false_v<T>, "non-exhaustive visitor!");
 			}, var);
 	}
+
+	template<typename K, typename T>
+	static inline bool map_contains(const std::map<K, T>& map, const K& key)
+	{
+		return  map.find(key) != map.end();
+	}
+
+	template<typename K, typename T>
+	static inline T map_at_or_null(const std::map<K, T>& map, const K& key)
+	{
+		auto itr = map.find(key);
+		return itr != map.end() ? itr->second : nullptr;
+	}
 }
 
 #endif //FLUTTER_INAPPWEBVIEW_PLUGIN_UTIL_H_