The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestUserAgent.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 java.io.IOException;

    32 import ch.boye.httpclientandroidlib.HttpException;

    33 import ch.boye.httpclientandroidlib.HttpRequest;

    34 import ch.boye.httpclientandroidlib.HttpRequestInterceptor;

    35 import ch.boye.httpclientandroidlib.params.HttpProtocolParams;

    37 /**

    38  * RequestUserAgent is responsible for adding <code>User-Agent</code> header.

    39  * This interceptor is recommended for client side protocol processors.

    40  * <p>

    41  * The following parameters can be used to customize the behavior of this

    42  * class:

    43  * <ul>

    44  *  <li>{@link ch.boye.httpclientandroidlib.params.CoreProtocolPNames#USER_AGENT}</li>

    45  * </ul>

    46  *

    47  * @since 4.0

    48  */

    49 public class RequestUserAgent implements HttpRequestInterceptor {

    51     public RequestUserAgent() {

    52         super();

    53     }

    55     public void process(final HttpRequest request, final HttpContext context)

    56         throws HttpException, IOException {

    57         if (request == null) {

    58             throw new IllegalArgumentException("HTTP request may not be null");

    59         }

    60         if (!request.containsHeader(HTTP.USER_AGENT)) {

    61             String useragent = HttpProtocolParams.getUserAgent(request.getParams());

    62             if (useragent != null) {

    63                 request.addHeader(HTTP.USER_AGENT, useragent);

    64             }

    65         }

    66     }

    68 }

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