misc

docker/nginx.conf

@@ -43,6 +43,14 @@ server {
         proxy_intercept_errors on;
         error_page 502 503 504 = @contact_down;
     }
+    # The proof-of-work challenge the form solves before it sends; issued by the same handler.
+    location = /contact/challenge {
+        limit_except GET { deny all; }
+        proxy_pass http://127.0.0.1:3000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_read_timeout 10s;
+    }
     # Handler not running: send the visitor to the error page in their language.
     location @contact_down {
         if ($http_referer ~ "/de(/|$|#)") { return 303 /de/contact/error; }