fastapi_ynh/conf/nginx.conf

# Redirect root path to the generated Swagger documentation page
location = __PATH__/ {
    rewrite __PATH__/ __PATH__/docs;
}

location __PATH__/ {
    # Wide-open CORS config for nginx
    # From : https://enable-cors.org/server_nginx.html
    if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        #
        # Custom headers and headers various browsers *should* be OK with but aren't
        #
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
        #
        # Tell client that this pre-flight info is valid for 20 days
        #
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain; charset=utf-8';
        add_header 'Content-Length' 0;
        return 204;
    }
    if ($request_method = 'POST') {
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
    }
    if ($request_method = 'GET') {
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
    }

    # this is needed if you have file import via upload enabled
    client_max_body_size 100M;

    # Configuration to pass request to Gunicorn
    # https://github.com/benoitc/gunicorn/blob/master/examples/nginx.conf
    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Protocol $scheme;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Scheme $scheme;

    # do not pass the CORS header from the response of the proxied server to the client
    proxy_hide_header 'Access-Control-Allow-Origin';

    proxy_read_timeout 30;
    proxy_send_timeout 30;
    proxy_connect_timeout 30;
    proxy_redirect off;

    proxy_pass http://127.0.0.1:__PORT__/;
}