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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/BasicEofSensorWatcher.java $
+ * $Revision $
+ * $Date: 2008-06-27 12:49:20 -0700 (Fri, 27 Jun 2008) $
+ *
+ * ====================================================================
+ *
+ * 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.conn;
+
+import java.io.InputStream;
+import java.io.IOException;
+
+
+/**
+ * Basic implementation of {@link EofSensorWatcher EofSensorWatcher}.
+ * The underlying connection is released on close or EOF.
+ *
+ * @author <a href="mailto:rolandw at apache.org">Roland Weber</a>
+ *
+ *
+ * <!-- empty lines to avoid svn diff problems -->
+ * @version $Revision: 672367 $
+ *
+ * @since 4.0
+ */
+public class BasicEofSensorWatcher implements EofSensorWatcher {
+
+
+ /** The connection to auto-release. */
+ protected ManagedClientConnection managedConn;
+
+ /** Whether to keep the connection alive. */
+ protected boolean attemptReuse;
+
+
+
+ /**
+ * Creates a new watcher for auto-releasing a connection.
+ *
+ * @param conn the connection to auto-release
+ * @param reuse whether the connection should be re-used
+ */
+ public BasicEofSensorWatcher(ManagedClientConnection conn,
+ boolean reuse) {
+ if (conn == null)
+ throw new IllegalArgumentException
+ ("Connection may not be null.");
+
+ managedConn = conn;
+ attemptReuse = reuse;
+ }
+
+
+ // non-javadoc, see interface EofSensorWatcher
+ public boolean eofDetected(InputStream wrapped)
+ throws IOException {
+
+ try {
+ if (attemptReuse) {
+ // there may be some cleanup required, such as
+ // reading trailers after the response body:
+ wrapped.close();
+ managedConn.markReusable();
+ }
+ } finally {
+ managedConn.releaseConnection();
+ }
+ return false;
+ }
+
+
+ // non-javadoc, see interface EofSensorWatcher
+ public boolean streamClosed(InputStream wrapped)
+ throws IOException {
+
+ try {
+ if (attemptReuse) {
+ // this assumes that closing the stream will
+ // consume the remainder of the response body:
+ wrapped.close();
+ managedConn.markReusable();
+ }
+ } finally {
+ managedConn.releaseConnection();
+ }
+ return false;
+ }
+
+
+ // non-javadoc, see interface EofSensorWatcher
+ public boolean streamAbort(InputStream wrapped)
+ throws IOException {
+
+ managedConn.abortConnection();
+ return false;
+ }
+
+} // class BasicEofSensorWatcher