How to let Symfony 2 adopt the protocol scheme (http vs https)

Question

I have a Symfony 2 website that either runs on HTTP in development or on HTTPS in production.

I noticed that in production the URL's generated by Symfony are still all rendered as HTTP.

How can I either;

1. Let the framework adopt the current protocol from which the website is served (probably preferred)?
2. Or, force the entire website in HTTPS mode only in production?

Answer 1

Assuming this case :

• Your Symfony app is behind a reverse proxy like Varnish or BigIP
• You want to use original client IP as REMOTE_ADDR (i.e with mod_rpaf apache extension) (of course in this case you can't use trusted_proxies value)

You can set HTTPS environment variable in your webserver, indexed on X-FORWARDED-PROTO header value, to force Symfony to use https protocol.

In Apache :

SetEnvIf x-forwarded-proto https HTTPS=on