Re: UPGRADE: Feature detection?

On 02/11/2015 11:52 AM, Daniel Kahn Gillmor wrote:
> If it's only sent during navigational requests, then the simplest
> server-side logic will fail to redirect requests for things like
> images or scripts that could have been redirected safely in the first
> place.
On upgrade-capable browsers, subresources with hardcoded HTTP URLs would
be upgraded to HTTPS by the upgrade mechanism, without ever making a
plaintext request.

On non-upgrade-capable browsers, subresources with hardcoded HTTP URLs
would first make a plaintext request. Some servers may desire to
redirect these, but I don't think it adds any security or privacy
benefit. The plaintext request has already hit the network and
potentially been observed and/or hijacked.

Received on Wednesday, 11 February 2015 20:04:56 UTC