--- a/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/internal/Exchange.java	Tue Feb 06 15:34:08 2018 +0000
+++ b/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/internal/Exchange.java	Tue Feb 06 16:07:43 2018 +0000
@@ -408,7 +408,7 @@
     }
 
     HttpResponse.BodySubscriber<T> ignoreBody(int status, HttpHeaders hdrs) {
-        return HttpResponse.BodySubscriber.discard((T)null);
+        return HttpResponse.BodySubscriber.replace(null);
     }
 
     // if this response was received in reply to an upgrade