--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/eclipse/jetty/http/HttpHeaderValues.java	Wed Sep 07 21:15:48 2016 -0600
@@ -0,0 +1,88 @@
+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.http;
+
+import org.eclipse.jetty.io.Buffer;
+import org.eclipse.jetty.io.BufferCache;
+import org.eclipse.jetty.io.ByteArrayBuffer;
+
+/**
+ * Cached HTTP Header values.
+ * This class caches the conversion of common HTTP Header values to and from {@link ByteArrayBuffer} instances.
+ * The resource "/org/eclipse/jetty/useragents" is checked for a list of common user agents, so that repeated
+ * creation of strings for these agents can be avoided.
+ * 
+ * 
+ */
+public class HttpHeaderValues extends BufferCache
+{
+    public final static String
+        CLOSE="close",
+        CHUNKED="chunked",
+        GZIP="gzip",
+        IDENTITY="identity",
+        KEEP_ALIVE="keep-alive",
+        CONTINUE="100-continue",
+        PROCESSING="102-processing",
+        TE="TE",
+        BYTES="bytes",
+        NO_CACHE="no-cache",
+        UPGRADE="Upgrade";
+
+    public final static int
+        CLOSE_ORDINAL=1,
+        CHUNKED_ORDINAL=2,
+        GZIP_ORDINAL=3,
+        IDENTITY_ORDINAL=4,
+        KEEP_ALIVE_ORDINAL=5,
+        CONTINUE_ORDINAL=6,
+        PROCESSING_ORDINAL=7,
+        TE_ORDINAL=8,
+        BYTES_ORDINAL=9,
+        NO_CACHE_ORDINAL=10,
+        UPGRADE_ORDINAL=11;
+    
+    public final static HttpHeaderValues CACHE= new HttpHeaderValues();
+
+    public final static Buffer 
+        CLOSE_BUFFER=CACHE.add(CLOSE,CLOSE_ORDINAL),
+        CHUNKED_BUFFER=CACHE.add(CHUNKED,CHUNKED_ORDINAL),
+        GZIP_BUFFER=CACHE.add(GZIP,GZIP_ORDINAL),
+        IDENTITY_BUFFER=CACHE.add(IDENTITY,IDENTITY_ORDINAL),
+        KEEP_ALIVE_BUFFER=CACHE.add(KEEP_ALIVE,KEEP_ALIVE_ORDINAL),
+        CONTINUE_BUFFER=CACHE.add(CONTINUE, CONTINUE_ORDINAL),
+        PROCESSING_BUFFER=CACHE.add(PROCESSING, PROCESSING_ORDINAL),
+        TE_BUFFER=CACHE.add(TE,TE_ORDINAL),
+        BYTES_BUFFER=CACHE.add(BYTES,BYTES_ORDINAL),
+        NO_CACHE_BUFFER=CACHE.add(NO_CACHE,NO_CACHE_ORDINAL),
+        UPGRADE_BUFFER=CACHE.add(UPGRADE,UPGRADE_ORDINAL);
+        
+
+    public static boolean hasKnownValues(int httpHeaderOrdinal)
+    {
+        switch(httpHeaderOrdinal)
+        {
+            case HttpHeaders.CONNECTION_ORDINAL:
+            case HttpHeaders.TRANSFER_ENCODING_ORDINAL:
+            case HttpHeaders.CONTENT_ENCODING_ORDINAL:
+                return true;
+        }
+        return false;
+    }
+}