Make Upgrade header check for websockets case insensitive, closes #228

2022-04-29 13:23:04 -04:00
parent 28bb8d4446
commit edfed24c27
3 changed files with 39 additions and 24 deletions
--- a/server/server.go
+++ b/server/server.go
@@ -739,7 +739,7 @@ func (s *Server) handleSubscribeHTTP(w http.ResponseWriter, r *http.Request, v *
 }

 func (s *Server) handleSubscribeWS(w http.ResponseWriter, r *http.Request, v *visitor) error {
-	if r.Header.Get("Upgrade") != "websocket" {
+	if strings.ToLower(r.Header.Get("Upgrade")) != "websocket" {
 		return errHTTPBadRequestWebSocketsUpgradeHeaderMissing
 	}
 	if err := v.SubscriptionAllowed(); err != nil {