Cancel on unavailable connection

Author: GoodforGod

http/http-server-undertow/src/main/java/ru/tinkoff/kora/http/server/undertow/UndertowExchangeProcessor.java

@@ -405,13 +405,8 @@ public void onNext(ByteBuffer byteBuffer) {
                 return;
             }
 
-            if (this.shutdownHandler.isShutdown()) {
-                HttpResponseBodySubscriber.this.subscription.cancel();
-                this.exchange.endExchange();
-                return;
-            }
-
             if (!this.exchange.getConnection().isOpen()) {
+                HttpResponseBodySubscriber.this.subscription.cancel();
                 return;
             }