nginx-phoenix-basic.conf

map $http_upgrade $connection_upgrade {
  default upgrade;
  '' close;
}

server {
  listen 80;

  location / {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_pass http://localhost:4000;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";

    # WebSocket support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    # proxy_set_header Upgrade websocket;
    proxy_set_header Connection $connection_upgrade;
    proxy_read_timeout 86400;
    proxy_set_header Origin ''; # avoid 403 error see: https://git.io/v7frj
  }
}