--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/hpack/BulkSizeUpdateWriter.java	Wed Feb 07 21:45:37 2018 +0000
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.internal.net.http.hpack;
+
+import java.nio.ByteBuffer;
+import java.util.Iterator;
+
+import static java.util.Objects.requireNonNull;
+
+final class BulkSizeUpdateWriter implements BinaryRepresentationWriter {
+
+    private final SizeUpdateWriter writer = new SizeUpdateWriter();
+    private Iterator<Integer> maxSizes;
+    private boolean writing;
+    private boolean configured;
+
+    BulkSizeUpdateWriter maxHeaderTableSizes(Iterable<Integer> sizes) {
+        if (configured) {
+            throw new IllegalStateException("Already configured");
+        }
+        requireNonNull(sizes, "sizes");
+        maxSizes = sizes.iterator();
+        configured = true;
+        return this;
+    }
+
+    @Override
+    public boolean write(HeaderTable table, ByteBuffer destination) {
+        if (!configured) {
+            throw new IllegalStateException("Configure first");
+        }
+        while (true) {
+            if (writing) {
+                if (!writer.write(table, destination)) {
+                    return false;
+                }
+                writing = false;
+            } else if (maxSizes.hasNext()) {
+                writing = true;
+                writer.reset();
+                writer.maxHeaderTableSize(maxSizes.next());
+            } else {
+                configured = false;
+                return true;
+            }
+        }
+    }
+
+    @Override
+    public BulkSizeUpdateWriter reset() {
+        maxSizes = null;
+        writing = false;
+        configured = false;
+        return this;
+    }
+}