I have an application that as part of the registration process is using reCaptcha to provide a captcha. The issue is that service is served from Google and is unavailable in certain countries, namely China. I've been researching this some and believe it's possible to proxy the requests to the Google CDN to avoid the Chinese firewall ban on Google URLs, however I'm not quite sure how to do this in CSP.
Does anyone have suggestions on how to solve this, either with a technical solution or an alternative service I can fall back to?
An example would be greatly appreciated.