CoreWebView2_WebResourceRequested Not respons to ajax call.

[IrakliLomidze]

Description
CoreWebView2_WebResourceRequested(object sender, CoreWebView2WebResourceRequestedEventArgs e)
Does not work with Ajax call.

CoreWebView2_WebResourceRequested Receives request but, it did not send back to the ajax caller.

Is it possible that CoreWebView2_WebResourceRequested acts as a webserver?

private void CoreWebView2_WebResourceRequested(object sender, CoreWebView2WebResourceRequestedEventArgs e)
{
if (e.Request.Uri.Trim().ToLower().StartsWith("http://history.codex.application/deletehistoryitem") == true)
{
// Do Somting
e.Response = environment.CreateWebResourceResponse(null, 200, "", "");
}
}

HTML

$.ajax({

        url : `http://history.codex.application/deletehistoryitem?event_id=${event_id}`,
        type : 'GET',
        dataType:'json',
        success : function(data, status, xhr) {              
            alert(data);
            alert(status);
            alert(xhr);
            if (xhr == 200)
            {

            }

        },
        error : function(request,error) {       
            alert("Cant Delete History: ");
        }
    });

....

public async Task InitializeAsync()
{
await webView21.EnsureCoreWebView2Async(null);

        webView21.CoreWebView2.Settings.AreDevToolsEnabled = true;// false;
        webView21.CoreWebView2.Settings.IsScriptEnabled = true;
        //webView21.CoreWebView2.Settings.AreDefaultContextMenusEnabled = false;
        webView21.CoreWebView2.Settings.IsStatusBarEnabled = false;
        webView21.CoreWebView2.Settings.IsBuiltInErrorPageEnabled = false;
        webView21.CoreWebView2.Settings.IsWebMessageEnabled = true;
        webView21.CoreWebView2.Settings.AreDefaultContextMenusEnabled = true;// false;
        webView21.CoreWebView2.NavigationCompleted += CoreWebView2_NavigationCompleted;

        environment = await CoreWebView2Environment.CreateAsync();
    }

private async void CoreWebView2_NavigationCompleted(object sender, Microsoft.Web.WebView2.Core.CoreWebView2NavigationCompletedEventArgs e)
{
await webView21.CoreWebView2.ExecuteScriptAsync(_codexApps.GetInitialScript());

        if (_codexApps.IsResponsive() == true)
        {

            webView21.CoreWebView2.AddWebResourceRequestedFilter("*", CoreWebView2WebResourceContext.All);
            

            webView21.CoreWebView2.WebResourceRequested += CoreWebView2_WebResourceRequested;
        }
    }

[champnic]

Hey @IrakliLomidze - yes, part of the intent with WebResourceRequested is to be able to short-circuit a network call and instead provide the response from the host app. At what point in your scenario is this not working?

[IrakliLomidze]

CoreWebView2_WebResourceRequested(object sender, CoreWebView2WebResourceRequestedEventArgs e)
is reciving request but when I create response it does not go to back HTML code.

In Webview2 Devtools Ajax call, I have network status pending.
Do I need a specific configuration to able to send a response back to HTML?

But I think the response is sending somewhere else because on an HTML page (Dev Tools shows that my js code still awaiting response)
Steps:
private CoreWebView2Environment environment;
...
environment = await CoreWebView2Environment.CreateAsync(userDataFolder: MYDIR);
await webView21.EnsureCoreWebView2Async(environment);

...
webView21.CoreWebView2.AddWebResourceRequestedFilter("*", CoreWebView2WebResourceContext.All);
webView21.CoreWebView2.WebResourceRequested += CoreWebView2_WebResourceRequested;

...

e.Response = environment.CreateWebResourceResponse(null, 200, "", "");
....

---

Environment : Windows 10 / 20H1, .NET 4.8 WinForm / VS 2019 Latest Uptate / WebView Latest Neget Update

[IrakliLomidze]

I have found solution:

1. e.Response = environment.CreateWebResourceResponse(null, 200, "", ""); Will never work with Ajax
   Use e.Response = environment.CreateWebResourceResponse(null, 200, "OK", ""); Insted

And most important that is not documented in WebView2 Documentation, When the page is loaded from the Local File system.
And you made calls to some HTTP or HTTPS resources there is an active CORE restriction policy of Chromium.

Do not forget disable CORE Policy:
var op = new CoreWebView2EnvironmentOptions("--disable-web-security");
environment = await CoreWebView2Environment.CreateAsync(options :op);

And champnic Please made possible custom URLs. like myappname:\action\params ...

[champnic]

Glad you've got it working @IrakliLomidze! We're are tracking custom urls in #173.