--- old/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/Stream.java	2018-01-22 16:49:06.000000000 +0000
+++ new/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/Stream.java	2018-01-22 16:49:05.000000000 +0000
@@ -767,7 +767,7 @@
         // blocks waiting for stream send window, if exhausted
         int actualAmount = windowController.tryAcquire(requestAmount, streamid, this);
         if (actualAmount <= 0) return null;
-        ByteBuffer outBuf = Utils.slice(buffer,  actualAmount);
+        ByteBuffer outBuf = Utils.sliceWithLimitedCapacity(buffer,  actualAmount);
         DataFrame df = new DataFrame(streamid, 0 , outBuf);
         return df;
     }