Fix case on access-control-allow-headers

cyu · Sep 11, 2022 · 75d4510 · 75d4510
1 parent 862a776
commit 75d4510
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/rack/cors/resource.rb b/lib/rack/cors/resource.rb
@@ -83,7 +83,7 @@ def origin_for_response_header(origin)
 
       def to_preflight_headers(env)
         h = to_headers(env)
-        h.merge!('Access-Control-Allow-Headers' => env[Rack::Cors::HTTP_ACCESS_CONTROL_REQUEST_HEADERS]) if env[Rack::Cors::HTTP_ACCESS_CONTROL_REQUEST_HEADERS]
+        h.merge!('access-control-allow-headers' => env[Rack::Cors::HTTP_ACCESS_CONTROL_REQUEST_HEADERS]) if env[Rack::Cors::HTTP_ACCESS_CONTROL_REQUEST_HEADERS]
         h
       end