Too many redirects error while trying to configure rails application as SSL using nginx and unicorn

Question

I am trying to configure a Rails application with SSL, using Nginx and Unicorn. I am trying to set it up locally. For that I first created a self-signed certificate using OpenSSL for Nginx. I followed the document for creating self-signed certificates. After that I configured my `nginx.conf` as below, inside the `http` block: ``` upstream unicorn_myapp { # This is the socket we configured in unicorn.rb server unix:root_path/tmp/sockets/unicorn.sock fail_timeout=0; } server { listen 80; server_name dev.myapp.com; rewrite ^/(.*) http://dev.myapp.com/$1 permanent; } server { listen 80; listen 443 ssl; server_name dev.myapp.com; ssl on; ssl_certificate /etc/nginx/ssl/server.pem; ssl_certificate_key /etc/nginx/ssl/server.key; ssl_protocols SSLv3 TLSv1; ssl_ciphers ALL:-ADH:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP; ssl_session_cache shared:SSL:10m; root root_path/public; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; if…

Accepted Answer

You are missing a header:

```
proxy_set_header X-Forwarded-Proto https;
```

Let me cite a comprehensive post that explains nicely how Rails deals with HTTPS on Nginx:

`force_ssl` relies on the `HTTP_X_FORWARDED_PROTO` HTTP header to determine whether or not the request was an HTTPS request. If this setting isn't set to `https` then you will end up with an infinite redirect loop as `force_ssl` will always think the forwarded request isn't HTTPS.

Too many redirects error while trying to configure rails application as SSL using nginx and unicorn

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