Symfony2 behind ELB is redirecting to http instead of https

Question

Issue:

• User logs in with https://example.com/login
• Authentication is approved
• As configured in security.yml Symfony2 redirects u

Answer 1

1. Make sure that trusted_hosts and trusted_proxies configuration properties are set appropriately.
2. Make sure that your load balancer adds X-Forwarded-For, X-Forwarded-Host, X-Forwarded-Port and, what's most important, X-Forwarded-Proto headers to the HTTP request send to the application.

Documentation: Trusting Proxies.

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EDIT:

As @A23 suggested you should also check if ELB is using "standard" headers names. If not, change them using one of following:

Request::setTrustedHeaderName(Request::HEADER_CLIENT_IP, 'X-Proxy-For');
Request::setTrustedHeaderName(Request::HEADER_CLIENT_HOST, 'X-Proxy-Host');
Request::setTrustedHeaderName(Request::HEADER_CLIENT_PORT, 'X-Proxy-Port');
Request::setTrustedHeaderName(Request::HEADER_CLIENT_PROTO, 'X-Proxy-Proto');