Update comments

testdays/app.py

@@ -263,9 +263,10 @@ def create_app(config_obj=None):
 
     # --- Reverse proxy middleware ---
     if os.getenv("IS_OPENSHIFT"):
-        # ProxyFix uses parse_list_header() internally, so it correctly
-        # handles duplicated values produced by HAProxy's append mode
-        # (e.g. "https,https") without extra normalization.
+        # ProxyFix is used instead of ReverseProxied because
+        # it correctly handles duplicated values produced by
+        # HAProxy's append mode (e.g. "https,https") without
+        # extra normalization.
         app.wsgi_app = ProxyFix(
             app.wsgi_app,
             x_for=int(app.config["PROXYFIX_X_FOR"]),

testdays/config.py

@@ -45,13 +45,9 @@ class Config(object):
         "forge.fedoraproject.org",
     )
 
-    # Proxy fix settings -- trust levels for X-Forwarded-* headers.
+    # ProxyFix settings -- trust levels for X-Forwarded-* headers.
     # Each value = number of proxies trusted for that header (0 = ignore).
     # Overridable via env vars or settings.py.
-    #
-    # ProxyFix uses parse_list_header() internally, so duplicated values
-    # from HAProxy's append mode (e.g. "https,https") are handled correctly
-    # as a 2-element list -- no extra normalization needed.
     PROXYFIX_X_FOR = 2
     PROXYFIX_X_PROTO = 2
     PROXYFIX_X_HOST = 0