site

server {
    listen 80 default_server;
    server_name TODO_YOUR_SUB_DOMAIN;

    # This location serves all Vouch Proxy endpoints as /vp_in_a_path/$uri
    #   including /vp_in_a_path/validate, /vp_in_a_path/login, /vp_in_a_path/logout, /vp_in_a_path/auth, /vp_in_a_path/auth/$STATE, etc
    location /vp_in_a_path {
      proxy_pass http://127.0.0.1:9090; # must not! have a slash at the end
      proxy_set_header Host $http_host;
      proxy_pass_request_body off;
      proxy_set_header Content-Length "";

      # these return values are used by the @error401 call
      auth_request_set $auth_resp_jwt $upstream_http_x_vouch_jwt;
      auth_request_set $auth_resp_err $upstream_http_x_vouch_err;
      auth_request_set $auth_resp_failcount $upstream_http_x_vouch_failcount;
    }

    # if /vp_in_a_path/validate returns `401 not authorized` then forward the request to the error401block
    error_page 401 = @error401;

    location @error401 {
        # redirect to Vouch Proxy for login
        return 302 https://TODO_YOUR_SUB_DOMAIN/vp_in_a_path/login?url=$scheme://$http_host$request_uri&vouch-failcount=$auth_resp_failcount&X-Vouch-Token=$auth_resp_jwt&error=$auth_resp_err;
    }

    location / {
      # Vouch Proxy's /validate endpoint handles auth
      auth_request /vp_in_a_path/validate;

      # Chaos Genius runs on 8080. Everything other than /vp_in_a_path is passed here.
      proxy_pass http://0.0.0.0:8080;
    }

    # TODO_SSL_CONFIG: SSL/TLS config - to be setup using Certbot or similar
}