diff -r 8c0b6bccfe47 -r 0989ad8c0860 src/share/jaxws_classes/com/sun/xml/internal/ws/api/message/MessageHeaders.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/ws/api/message/MessageHeaders.java	Tue Apr 09 14:51:13 2013 +0100
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 1997, 2013, 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 com.sun.xml.internal.ws.api.message;
+
+import java.util.List;
+import java.util.Iterator;
+import java.util.Set;
+
+import javax.xml.namespace.QName;
+
+import com.sun.xml.internal.ws.api.WSBinding;
+
+/**
+ * Interface representing all the headers of a {@link Message}
+ */
+public interface MessageHeaders {
+    public void understood(Header header);
+    public void understood(QName name);
+    public void understood(String nsUri, String localName);
+    public Header get(String nsUri, String localName, boolean markAsUnderstood);
+    public Header get(QName name, boolean markAsUnderstood);
+    public Iterator<Header> getHeaders(String nsUri, String localName, final boolean markAsUnderstood);
+    /**
+     * Get all headers in specified namespace
+     * @param nsUri
+     * @param markAsUnderstood
+     * @return
+     */
+    public Iterator<Header> getHeaders(String nsUri, final boolean markAsUnderstood);
+    public Iterator<Header> getHeaders(QName headerName, final boolean markAsUnderstood);
+    public Iterator<Header> getHeaders();
+    public boolean hasHeaders();
+    public boolean add(Header header);
+    public Header remove(QName name);
+    public Header remove(String nsUri, String localName);
+    //DONT public Header remove(Header header);
+    public void replace(Header old, Header header);
+
+    /**
+     * Replaces an existing {@link Header} or adds a new {@link Header}.
+     *
+     * <p>
+     * Order doesn't matter in headers, so this method
+     * does not make any guarantee as to where the new header
+     * is inserted.
+     *
+     * @return
+     *      always true. Don't use the return value.
+     */
+    public boolean addOrReplace(Header header);
+
+    /**
+     * Return a Set of QNames of headers that have been explicitly marked as understood.
+     * If none have been marked, this method could return null
+     */
+    public Set<QName> getUnderstoodHeaders();
+
+    /**
+     * Returns a Set of QNames of headers that satisfy ALL the following conditions:
+     * (a) Have mustUnderstand = true
+     * (b) have NOT been explicitly marked as understood
+     * (c) If roles argument is non-null, the header has isIgnorable = false
+     * for the roles argument and SOAP version
+     * (d) If non-null binding is passed in, are NOT understood by the binding
+     * (e) If (d) is met, the header is NOT in the knownHeaders list passed in
+     *
+     * @param roles
+     * @param knownHeaders
+     * @param binding
+     * @return
+     */
+    public Set<QName> getNotUnderstoodHeaders(Set<String> roles, Set<QName> knownHeaders, WSBinding binding);
+
+    /**
+     * True if the header has been explicitly marked understood, false otherwise
+     * @param header
+     * @return
+     */
+    public boolean isUnderstood(Header header);
+
+    /**
+     * True if the header has been explicitly marked understood, false otherwise
+     * @param header
+     * @return
+     */
+    public boolean isUnderstood(QName header);
+
+    /**
+     * True if the header has been explicitly marked understood, false otherwise
+     * @param header
+     * @return
+     */
+    public boolean isUnderstood(String nsUri, String header);
+
+    /**
+     * Returns <code>Header</code> instances in a <code>List</code>.
+     * @return <code>List</code> containing <code>Header</code> instances
+     */
+    public List<Header> asList();
+}