CSP warning firebug

Question

Im developing a game with JavaScript and canvas. And recently since i implemented clicks i have been receiving this message in firebug:

CSP WARN: allow directive is deprecated, use the equivalent default-source directive instead

Its not affecting the game at all, but i was wondering what it meant? and could it affect my game eventually?

I found this online, but i can't make any sense of it, and im not totally sure if its talking about the same message that im receiving

LINK

Thanks

Answer 1

CSP is Content Security Policy, these are HTTP headers that can for example restrict JavaScript execution in the browser. The warning points out a non-critical problem with the policy.

To look at the headers you could use curl -I on your server. The "Content-Security-Policy", "X-Content-Security-Policy" and "X-WebKit-CSP" fields are relevant.

Since you don't know about CSP I assume you are not administrating the web server, you might want to talk to the person in charge.