The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/conn/ConnectionKeepAliveStrategy.java@fc2d59ddac77

     1 /*

     2  * ====================================================================

     3  * Licensed to the Apache Software Foundation (ASF) under one

     4  * or more contributor license agreements.  See the NOTICE file

     5  * distributed with this work for additional information

     6  * regarding copyright ownership.  The ASF licenses this file

     7  * to you under the Apache License, Version 2.0 (the

     8  * "License"); you may not use this file except in compliance

     9  * with the License.  You may obtain a copy of the License at

    10  *

    11  *   http://www.apache.org/licenses/LICENSE-2.0

    12  *

    13  * Unless required by applicable law or agreed to in writing,

    14  * software distributed under the License is distributed on an

    15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

    16  * KIND, either express or implied.  See the License for the

    17  * specific language governing permissions and limitations

    18  * under the License.

    19  * ====================================================================

    20  *

    21  * This software consists of voluntary contributions made by many

    22  * individuals on behalf of the Apache Software Foundation.  For more

    23  * information on the Apache Software Foundation, please see

    24  * <http://www.apache.org/>.

    25  *

    26  */

    27 package ch.boye.httpclientandroidlib.conn;

    29 import ch.boye.httpclientandroidlib.ConnectionReuseStrategy;

    30 import ch.boye.httpclientandroidlib.HttpResponse;

    31 import ch.boye.httpclientandroidlib.protocol.HttpContext;

    33 /**

    34  * Interface for deciding how long a connection can remain

    35  * idle before being reused.

    36  * <p>

    37  * Implementations of this interface must be thread-safe. Access to shared

    38  * data must be synchronized as methods of this interface may be executed

    39  * from multiple threads.

    40  *

    41  * @since 4.0

    42  */

    43 public interface ConnectionKeepAliveStrategy {

    45     /**

    46      * Returns the duration of time which this connection can be safely kept

    47      * idle. If the connection is left idle for longer than this period of time,

    48      * it MUST not reused. A value of 0 or less may be returned to indicate that

    49      * there is no suitable suggestion.

    50      *

    51      * When coupled with a {@link ConnectionReuseStrategy}, if

    52      * {@link ConnectionReuseStrategy#keepAlive(HttpResponse, HttpContext)}

    53      * returns true, this allows you to control how long the reuse will last. If

    54      * keepAlive returns false, this should have no meaningful impact

    55      *

    56      * @param response

    57      *            The last response received over the connection.

    58      * @param context

    59      *            the context in which the connection is being used.

    60      *

    61      * @return the duration in ms for which it is safe to keep the connection

    62      *         idle, or <=0 if no suggested duration.

    63      */

    64     long getKeepAliveDuration(HttpResponse response, HttpContext context);

    66 }

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