CEF Forum

Have a challenge on using GetAuthCredentials to provide user credentials.

Some background on the solution:
Always on Windows forms application where one web page with login functionality provided with CefSharp.

Problem:
1. GetAuthCredentials() works correctly only on the first time after application is started and user credentials are passed ok
2. With following user logins the GetAuthCredentials() is not called anymore, but the first user's credentials are always passd to web page

Here is a snippet on the GetAuthCredentials implementation:

public bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, IFrame frame, bool isProxy, string host, int port, string realm, string scheme, IAuthCallback callback)
{
if (isProxy != true)
{
callback.Continue(Program.user.getEmailAddress(), Program.user.getPassword());
return true;
}

return false;
}

CefSharp is initialized like this:

CefSettings settings = new CefSettings();
settings.CefCommandLineArgs.Add("disable-application-cache", "1");
settings.CefCommandLineArgs.Add("disable-session-storage", "1");
Cef.Initialize(settings);

Correct, credentials are cached.

How can I empty cache, when the program is always running?
Or can I prevent the cache being used?

Tried CefBrowser already like this:
settings.CachePath = "cef_cache";

and when form where browser is closed:
Cef.GetGlobalCookieManager().DeleteCookies("", "");

There is no way to clear the auth cache currently. I suggest using a different form of authentication where your application can manage login/logout.

Thinked another solution of closing Cef after the web form is closed.
Is this possible since the main form is still up and running?

You would likely need to restart the application.

Hello,

Is there any plan to address this cache clearing issue?

Thanks,

Paul

Use CefRequestContext::ClearHttpAuthCredentials

Hello Marshall,

Do you have any example on how to use ClearHttpAuthCredentials?

So far, I have tried this (simplified for this context):

Code: Select all

auto requestContext = GetBrowser()->GetHost()->GetRequestContext();
if (requestContext)
{
   requestContext->ClearHttpAuthCredentials(nullptr);
}

This is executed on the main browser thread. Using CEF version: 90.5.10.0

When this executes, I get an exception (attached image).

I know this is a very small snippet of my code, but do you have any insight as to what is happing? Do you have any examples on how this should be called?

Has anyone been able to successfully use ClearHttpAuthCredentials?

I keep getting a crash when I call it.