diff -r 8e1ed2a15845 -r 4690a2871b44 src/java.net.http/share/classes/jdk/internal/net/http/Http1AsyncReceiver.java
--- a/src/java.net.http/share/classes/jdk/internal/net/http/Http1AsyncReceiver.java	Wed May 02 10:47:16 2018 +0200
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/Http1AsyncReceiver.java	Wed May 02 02:36:17 2018 -0700
@@ -356,6 +356,7 @@
                 // be left over in the stream.
                 try {
                     setRetryOnError(false);
+                    pending.close(null);
                     onReadError(new IOException("subscription cancelled"));
                     unsubscribe(pending);
                 } finally {