@dana
It is not possible to bypass the HTTP to HTTPS link conversion from an iframe directly. The browser enforces the security policy of always upgrading insecure requests to HTTPS when embedding content using iframes.
If you want to access HTTP content from within an iframe that is loaded in an HTTPS environment, you would need to ensure that the content is served over HTTPS. This can be done by configuring the server to support HTTPS and serving the content over HTTPS instead of HTTP.
Alternatively, you can try embedding the content using a different method that allows mixing HTTP and HTTPS content, such as using a script tag or AJAX request. However, this may not be recommended as it can introduce security vulnerabilities.
In summary, the best way to bypass HTTP to HTTPS conversion from an iframe is to serve the content over HTTPS.