[fix] limiter: prevent caching of token link

Depending on server and client setup, this CSS link with empty content may be cached.
For example, in my setup CloudFlare automatically adds 14400s (4hours) in my test.
This prevents caching by browser and proxies so the CSS can be reliably requested.

1 files changed, 1 insertions, 1 deletions

diff --git a/searx/webapp.py b/searx/webapp.py
index 9d51b5e8c..7104853e8 100755
--- a/searx/webapp.py
+++ b/searx/webapp.py
@@ -594,7 +594,7 @@ def health():
 @app.route('/client<token>.css', methods=['GET', 'POST'])
 def client_token(token=None):
     link_token.ping(sxng_request, token)
-    return Response('', mimetype='text/css')
+    return Response('', mimetype='text/css', headers={"Cache-Control": "no-store, max-age=0"})
 
 
 @app.route('/rss.xsl', methods=['GET', 'POST'])