how to implement https web filter in VC++

See more:

C++

I am creating a web filter using visual c++ and windivert library.

I am able to implement HTTP website filter and also able to send block message back to client browser if website is blacklisted. Now if i add HTTPS Site to blacklist then my application blocks the site, but my block message response to browser is not displayed instead browsers default "Connection Problem" message is displayed.

I am sending HTTP dummy packet to client browser with HTTP 200 status code and block page in HTML format in response if website is blacklisted.

I know that HTTPS uses encryption and so my plain text response will not work, so i want to know how can i archive this, any suggestion regarding topic also appreciated.

anyway this is network firewall and will be used in server PC.

Thank you very much for your help.