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/*
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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * KIND, either express or implied.  See the License for the
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package org.apache.http.conn;

import org.apache.http.HttpResponse;
import org.apache.http.protocol.HttpContext;

/**
 * Interface for deciding how long a connection can remain
 * idle before being reused.
 * 

* 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 org.apache.http.ConnectionReuseStrategy}, if * {@link org.apache.http.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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