Select Certificate

[maerciops]

In Chrome, when you select a certificate, you can change just when you restart the browser. The event OnSelectCertificate is called just a once time. How can I could do select certificate in chromium many times in the same Formulary?

[salvadordf]

Hi,

Set the GlobalCEFApp.Cache property to a writable directory and use the TChromiumCore.OnSelectClientCertificate event to select a certificate automatically.

The MiniBrowser demo has the code to let the user select a certificate but you can modify it to select it automatically :
https://github.com/salvadordf/CEF4Delphi/blob/55a70a998eeeb5dbba2e8e1db36902ffcc40ebfc/demos/Delphi_VCL/MiniBrowser/uMiniBrowser.pas#L1368

[maerciops]

I used the MiniBrowser Demo to select certificate, but my problem is when I select a certificate a once, in the next time if I need select another certificate don't work. If I want, I need to close the form and recreate it. I'll explain the steps:

- Creates the form. This form create GlobalCefApp, e so create the chromium.
- Loads URL Default.
- My customer select download to download a XML refer to a government document.
- In the first time he select the certificate, because is the way to site auth his credentials.
- So if his want download another XML to another company where the certificate is different don't work, because the first certificate selected stays.

[salvadordf]

Try calling ClearDataForOrigin to clear the storage data for a given origin.

Code: Select all

TChromiumCore.ClearDataForOrigin('https://www.mywebsite.com', cdstAll);

This is an asynchronous function that triggers the TChromiumCore.OnDevToolsMethodResult event when it finishes executing.

[maerciops]

Yeah, I tested this method in Demo MiniBrowser: https://github.com/salvadordf/CEF4Delphi/blob/16639d5ea5d5c6d5fddaa4c771504abb4fbb7641/demos/Delphi_VCL/MiniBrowser/uMiniBrowser.pas#L1373

The ClearCache and ClearDataForOrigin but no one worked. I'm breaking my head, just works when I close the form and recreate them, Idon't know what I do. In the IE, when we used the TWEBBrowser the script "document.execCommand("ClearAuthenticationCache");" was working, but the engine of the Chromium is totally different. If you have more tips, I apreciate.

[salvadordf]

Create an independent browser with a new request context that uses a different cache directory.

See the MDIBrowser code :
https://github.com/salvadordf/CEF4Delphi/blob/55a70a998eeeb5dbba2e8e1db36902ffcc40ebfc/demos/Delphi_VCL/MDIBrowser/uChildForm.pas#L164

[maerciops]

It's works, but the method is same. A ChildForm need to be closed to work in another ChildForm. So is the same way, a form need to be closed to it works. I tested with a ChildForm embedded in another form but the process is not closed totally so the spend of memory is huge if the customer stays clicking in new browser.

[salvadordf]

That's the recommended way in this case :
https://stackoverflow.com/questions/66521061/requesting-client-certificate-a-second-time-with-cefsharp

Chromium should eventually stop those unused processes.