Cannot make proxy without auth work, while with auth working OK.

[assopri]

Hi! I create browser in a following manner:

`Browser = new ChromiumWebBrowser();

        (Browser as ChromiumWebBrowser).BrowserSettings = browserSetting;
        //Using RequestContextSettings allows having isolated cache/cookies etc for different ChromiumWebBrowser instances
        RequestContextSettings requestContextSettings = new RequestContextSettings();
        requestContextSettings.PersistSessionCookies = true;
        requestContextSettings.PersistUserPreferences = true;
      
        string cachePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments),
            UniCefBrowserWrapperFactory.CefSharpCacheLocalPath,
            SingleBrowserInfo.Proxy.Ip);
        if (!Directory.Exists(cachePath)) Directory.CreateDirectory(cachePath);
        requestContextSettings.CachePath = cachePath;
        (Browser as ChromiumWebBrowser).RequestContext = new RequestContext(requestContextSettings);
        (Browser as ChromiumWebBrowser).RequestHandler =
            new CustomRequestHandler(SingleBrowserInfo.Proxy.Login,
                SingleBrowserInfo.Proxy.Password,
                SingleBrowserInfo.UserAgent);
        if (!String.IsNullOrEmpty(SingleBrowserInfo.Proxy.Ip))
            (Browser as ChromiumWebBrowser).IsBrowserInitializedChanged += (s, e) =>
            {
                var br = (ChromiumWebBrowser)s;
                var v = new Dictionary<string, object>
                {
                    ["mode"] = "fixed_servers",
                    ["server"] = string.Format("{0}://{1}:{2}",
                    SingleBrowserInfo.Proxy.Scheme, SingleBrowserInfo.Proxy.Ip, SingleBrowserInfo.Proxy.Port.ToString())
                };
                if (!br.GetBrowser().GetHost().RequestContext.SetPreference("proxy", v, out string error))
                    throw new Exception(error);
            };

`

CustomRequestHandler is defined as following:

`public class CustomRequestHandler : RequestHandler
{
string _proxyLogin;
string _proxyPassword;
string _userAgent;
public CustomRequestHandler(string proxyLogin, string proxyPassword,string userAgent)
{
_proxyLogin = proxyLogin;
_proxyPassword = proxyPassword;
_userAgent = userAgent;
}
protected override IResourceRequestHandler GetResourceRequestHandler(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, bool isNavigation, bool isDownload, string requestInitiator, ref bool disableDefaultHandling)
{
return new CustomResourceRequestHandler(_userAgent);
}

    protected override bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, string originUrl, bool isProxy, string host, int port, string realm, string scheme, IAuthCallback callback)
    {
        if (!String.IsNullOrEmpty(_proxyLogin))
        {
            callback.Continue(_proxyLogin, _proxyPassword);
            return true;
        }
        return false;
    }
  
}`

Now I get load timeout loading with non authorized proxy, while I have successful load using proxy with authorization. What I miss?

My OS is Windows7 64x , VS 2019 installed. I use Offscreen Cefsharp version, .NET 4.5.2 . Cef version is 90.6.50.0

[amaitland]

Have you confirmed the proxy works in Chrome? Check the log file to see if there were any errors.

I believe the test cases are currently passing for proxy without auth

• https://github.com/cefsharp/CefSharp/blob/cefsharp/91/CefSharp.Test/OffScreen/OffScreenBrowserBasicFacts.cs#L562
• https://github.com/cefsharp/CefSharp/blob/cefsharp/91/CefSharp.Test/OffScreen/OffScreenBrowserBasicFacts.cs#L650

[assopri]

Thank you! It works just fine!