1 files changed, 73 insertions, 0 deletions
diff --git a/src/org/apache/http/protocol/ResponseDate.java b/src/org/apache/http/protocol/ResponseDate.java
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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/protocol/ResponseDate.java $
+ * $Revision: 555989 $
+ * $Date: 2007-07-13 06:33:39 -0700 (Fri, 13 Jul 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.protocol;
+
+import java.io.IOException;
+
+import org.apache.http.HttpException;
+import org.apache.http.HttpResponse;
+import org.apache.http.HttpResponseInterceptor;
+import org.apache.http.HttpStatus;
+
+/**
+ * A response interceptor that adds a Date header.
+ * For use on the server side.
+ *
+ * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
+ *
+ * @version $Revision: 555989 $
+ * 
+ * @since 4.0
+ */
+public class ResponseDate implements HttpResponseInterceptor {
+
+    private static final HttpDateGenerator DATE_GENERATOR = new HttpDateGenerator(); 
+    
+    public ResponseDate() {
+        super();
+    }
+
+    public void process(final HttpResponse response, final HttpContext context) 
+            throws HttpException, IOException {
+        if (response == null) {
+            throw new IllegalArgumentException
+                ("HTTP response may not be null.");
+        }
+        int status = response.getStatusLine().getStatusCode();
+        if ((status >= HttpStatus.SC_OK) &&
+            !response.containsHeader(HTTP.DATE_HEADER)) {
+            String httpdate = DATE_GENERATOR.getCurrentDate();
+            response.setHeader(HTTP.DATE_HEADER, httpdate); 
+        }
+    }
+    
+}