The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/HttpExpectationVerifier.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.protocol;

    30 import ch.boye.httpclientandroidlib.HttpException;

    31 import ch.boye.httpclientandroidlib.HttpRequest;

    32 import ch.boye.httpclientandroidlib.HttpResponse;

    34 /**

    35  * Defines an interface to verify whether an incoming HTTP request meets

    36  * the target server's expectations.

    37  *<p>

    38  * The Expect request-header field is used to indicate that particular

    39  * server behaviors are required by the client.

    40  *</p>

    41  *<pre>

    42  *    Expect       =  "Expect" ":" 1#expectation

    43  *

    44  *    expectation  =  "100-continue" | expectation-extension

    45  *    expectation-extension =  token [ "=" ( token | quoted-string )

    46  *                             *expect-params ]

    47  *    expect-params =  ";" token [ "=" ( token | quoted-string ) ]

    48  *</pre>

    49  *<p>

    50  * A server that does not understand or is unable to comply with any of

    51  * the expectation values in the Expect field of a request MUST respond

    52  * with appropriate error status. The server MUST respond with a 417

    53  * (Expectation Failed) status if any of the expectations cannot be met

    54  * or, if there are other problems with the request, some other 4xx

    55  * status.

    56  *</p>

    57  *

    58  * @since 4.0

    59  */

    60 public interface HttpExpectationVerifier {

    62     /**

    63      * Verifies whether the given request meets the server's expectations.

    64      * <p>

    65      * If the request fails to meet particular criteria, this method can

    66      * trigger a terminal response back to the client by setting the status

    67      * code of the response object to a value greater or equal to

    68      * <code>200</code>. In this case the client will not have to transmit

    69      * the request body. If the request meets expectations this method can

    70      * terminate without modifying the response object. Per default the status

    71      * code of the response object will be set to <code>100</code>.

    72      *

    73      * @param request the HTTP request.

    74      * @param response the HTTP response.

    75      * @param context the HTTP context.

    76      * @throws HttpException in case of an HTTP protocol violation.

    77      */

    78     void verify(HttpRequest request, HttpResponse response, HttpContext context)

    79             throws HttpException;

    81 }

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