Mainflux.mainflux/docker/nginx/snippets/proxy-headers.conf

# Copyright (c) Mainflux
# SPDX-License-Identifier: Apache-2.0

proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;

# Allow OPTIONS method CORS
if ($request_method = OPTIONS) {
    add_header Content-Length 0;
    add_header Content-Type text/plain;
    return 200;
}