--- old/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/internal/frame/SettingsFrame.java	2017-12-13 11:31:02.573044364 +0000
+++ new/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/internal/frame/SettingsFrame.java	2017-12-13 11:31:02.337049566 +0000
@@ -100,6 +100,11 @@
         this(0);
     }
 
+    public SettingsFrame(SettingsFrame other) {
+        super(0, other.flags);
+        parameters = Arrays.copyOf(other.parameters, MAX_PARAM);
+    }
+
     @Override
     public int type() {
         return TYPE;