nginx-standalone-virtualhost.conf

upstream unicorn {
 # This is the socket we configured in unicorn.rb
 server unix:/opt/myapp/shared/tmp/sockets/unicorn.sock
 fail_timeout=0;
}

upstream ws {
  server localhost:3001;
}
upstream api {
  server localhost:80;
}

server {
  server_name _ proxy_protocol;
  if ($http_x_forwarded_proto = "http") {
            return 301 https://$host$request_uri;
  }
  listen 80 ;

  location /api/ {
    proxy_set_header X-INTERNAL TRUE;
    proxy_set_header Host $host;
    proxy_pass http://api;
    }
  # Websocket support
  location /websocket {
    proxy_pass http://ws;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection upgrade;
    proxy_read_timeout 86400;
    proxy_buffering off;

    proxy_redirect off;

    # IE8 Websocket support - uses CORS and HTTP streaming
    if ($request_method = 'OPTIONS') {
      add_header 'Access-Control-Allow-Origin' $http_origin;
      add_header 'Access-Control-Allow-Credentials' 'true';
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
      add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
      # Tell client that this pre-flight info is valid for 20 days
      add_header 'Access-Control-Max-Age' 1728000;
      add_header 'Content-Type' 'text/plain charset=UTF-8';
      add_header 'Content-Length' 0;
      return 204;
    }

    if ($request_method = 'POST') {
      add_header 'Access-Control-Allow-Origin' $http_origin;
      add_header 'Access-Control-Allow-Credentials' 'true';
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
      add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
    }

    if ($request_method = 'GET') {
      add_header 'Access-Control-Allow-Origin' $http_origin;
      add_header 'Access-Control-Allow-Credentials' 'true';
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
      add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
    }
  }

  location / {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-INTERNAL FALSE;
    proxy_set_header X-Forwarded-Proto https;
    proxy_redirect off;
    proxy_read_timeout 60s;

    proxy_buffer_size          128k;
    proxy_buffers              4 256k;
    proxy_busy_buffers_size    256k;

    # If you don't find the filename in the static files
    # Then request it from the unicorn server
    if (!-f $request_filename) {
      proxy_pass http://unicorn;
      break;
    }
  }

  root /opt/myapp/current/public;

  try_files $uri @unicorn;
}

server {
  server_name localhost;
  listen 81;

  location /health_check {
    proxy_pass http://unicorn;
  }
}

server {
  server_name  localhost ;
    listen 9000;

  location /api/ {
    proxy_set_header X-INTERNAL TRUE;
    proxy_set_header Host $host;
    proxy_pass http://api;
  }
}