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Java example source code file (ConnectionKeepAliveStrategy.java)

This example source code file (ConnectionKeepAliveStrategy.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

connectionkeepalivestrategy, httpcontext

The ConnectionKeepAliveStrategy.java example source code

 * ====================================================================
 * 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
 * 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 org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpResponse;
import org.apache.http.protocol.HttpContext;

 * Interface for deciding how long a connection can remain
 * idle before being reused.
 * <p>
 * Implementations of this interface must be thread-safe. Access to shared
 * data must be synchronized as methods of this interface may be executed 
 * from multiple threads.
 * @since 4.0
public interface ConnectionKeepAliveStrategy {
     * Returns the duration of time which this connection can be safely kept
     * idle. If the connection is left idle for longer than this period of time,
     * it MUST not reused. A value of 0 or less may be returned to indicate that
     * there is no suitable suggestion.
     * When coupled with a {@link ConnectionReuseStrategy}, if
     * {@link ConnectionReuseStrategy#keepAlive(HttpResponse, HttpContext)}
     * returns true, this allows you to control how long the reuse will last. If
     * keepAlive returns false, this should have no meaningful impact
     * @param response
     *            The last response received over the connection.
     * @param context
     *            the context in which the connection is being used.
     * @return the duration in ms for which it is safe to keep the connection
     *         idle, or <=0 if no suggested duration.
    long getKeepAliveDuration(HttpResponse response, HttpContext context);

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