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diff --git a/src/org/apache/http/cookie/CookieSpec.java b/src/org/apache/http/cookie/CookieSpec.java
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+++ b/src/org/apache/http/cookie/CookieSpec.java
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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/cookie/CookieSpec.java $
+ * $Revision: 603563 $
+ * $Date: 2007-12-12 03:17:55 -0800 (Wed, 12 Dec 2007) $
+ *
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package org.apache.http.cookie;
+
+import java.util.List;
+
+import org.apache.http.Header;
+
+/**
+ * Defines the cookie management specification.
+ * <p>Cookie management specification must define
+ * <ul>
+ *   <li> rules of parsing "Set-Cookie" header
+ *   <li> rules of validation of parsed cookies
+ *   <li>  formatting of "Cookie" header 
+ * </ul>
+ * for a given host, port and path of origin
+ * 
+ * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
+ * @author <a href="mailto:jsdever@apache.org">Jeff Dever</a>
+ *
+ * @since 4.0
+ */
+public interface CookieSpec {    
+
+    /**
+     * Returns version of the state management this cookie specification
+     * conforms to.
+     * 
+     * @return version of the state management specification
+     */
+    int getVersion();
+    
+    /**
+      * Parse the <tt>"Set-Cookie"</tt> Header into an array of Cookies.
+      *
+      * <p>This method will not perform the validation of the resultant
+      * {@link Cookie}s</p> 
+      *
+      * @see #validate
+      *
+      * @param header the <tt>Set-Cookie</tt> received from the server
+      * @param origin details of the cookie origin
+      * @return an array of <tt>Cookie</tt>s parsed from the header
+      * @throws MalformedCookieException if an exception occurs during parsing
+      */
+    List<Cookie> parse(Header header, CookieOrigin origin) throws MalformedCookieException;
+
+    /**
+      * Validate the cookie according to validation rules defined by the 
+      *  cookie specification.
+      *
+      * @param cookie the Cookie to validate
+      * @param origin details of the cookie origin
+      * @throws MalformedCookieException if the cookie is invalid
+      */
+    void validate(Cookie cookie, CookieOrigin origin) throws MalformedCookieException;
+    
+    /**
+     * Determines if a Cookie matches the target location.
+     *
+     * @param cookie the Cookie to be matched
+     * @param origin the target to test against
+     * 
+     * @return <tt>true</tt> if the cookie should be submitted with a request 
+     *  with given attributes, <tt>false</tt> otherwise.
+     */
+    boolean match(Cookie cookie, CookieOrigin origin);
+
+    /**
+     * Create <tt>"Cookie"</tt> headers for an array of Cookies.
+     *
+     * @param cookies the Cookies format into a Cookie header
+     * @return a Header for the given Cookies.
+     * @throws IllegalArgumentException if an input parameter is illegal
+     */
+    List<Header> formatCookies(List<Cookie> cookies);
+
+    /**
+     * Returns a request header identifying what version of the state management 
+     * specification is understood. May be <code>null</code> if the cookie 
+     * specification does not support <tt>Cookie2</tt> header.
+     */
+    Header getVersionHeader();
+    
+}