The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/ConnectionReuseStrategy.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  */

    28 package ch.boye.httpclientandroidlib;

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

    32 /**

    33  * Interface for deciding whether a connection can be re-used for

    34  * subsequent requests and should be kept alive.

    35  * <p>

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

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

    38  * from multiple threads.

    39  *

    40  * @since 4.0

    41  */

    42 public interface ConnectionReuseStrategy {

    44     /**

    45      * Decides whether a connection can be kept open after a request.

    46      * If this method returns <code>false</code>, the caller MUST

    47      * close the connection to correctly comply with the HTTP protocol.

    48      * If it returns <code>true</code>, the caller SHOULD attempt to

    49      * keep the connection open for reuse with another request.

    50      * <br/>

    51      * One can use the HTTP context to retrieve additional objects that

    52      * may be relevant for the keep-alive strategy: the actual HTTP

    53      * connection, the original HTTP request, target host if known,

    54      * number of times the connection has been reused already and so on.

    55      * <br/>

    56      * If the connection is already closed, <code>false</code> is returned.

    57      * The stale connection check MUST NOT be triggered by a

    58      * connection reuse strategy.

    59      *

    60      * @param response

    61      *          The last response received over that connection.

    62      * @param context   the context in which the connection is being

    63      *          used.

    64      *

    65      * @return <code>true</code> if the connection is allowed to be reused, or

    66      *         <code>false</code> if it MUST NOT be reused

    67      */

    68     boolean keepAlive(HttpResponse response, HttpContext context);

    70 }

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