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

    33 import ch.boye.httpclientandroidlib.HttpEntityEnclosingRequest;

    34 import ch.boye.httpclientandroidlib.HttpException;

    35 import ch.boye.httpclientandroidlib.HttpRequest;

    36 import ch.boye.httpclientandroidlib.HttpRequestInterceptor;

    37 import ch.boye.httpclientandroidlib.HttpVersion;

    38 import ch.boye.httpclientandroidlib.ProtocolVersion;

    39 import ch.boye.httpclientandroidlib.ProtocolException;

    41 /**

    42  * RequestContent is the most important interceptor for outgoing requests.

    43  * It is responsible for delimiting content length by adding

    44  * <code>Content-Length</code> or <code>Transfer-Content</code> headers based

    45  * on the properties of the enclosed entity and the protocol version.

    46  * This interceptor is required for correct functioning of client side protocol

    47  * processors.

    48  *

    49  * @since 4.0

    50  */

    51 public class RequestContent implements HttpRequestInterceptor {

    53     public RequestContent() {

    54         super();

    55     }

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

    58             throws HttpException, IOException {

    59         if (request == null) {

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

    61         }

    62         if (request instanceof HttpEntityEnclosingRequest) {

    63             if (request.containsHeader(HTTP.TRANSFER_ENCODING)) {

    64                 throw new ProtocolException("Transfer-encoding header already present");

    65             }

    66             if (request.containsHeader(HTTP.CONTENT_LEN)) {

    67                 throw new ProtocolException("Content-Length header already present");

    68             }

    69             ProtocolVersion ver = request.getRequestLine().getProtocolVersion();

    70             HttpEntity entity = ((HttpEntityEnclosingRequest)request).getEntity();

    71             if (entity == null) {

    72                 request.addHeader(HTTP.CONTENT_LEN, "0");

    73                 return;

    74             }

    75             // Must specify a transfer encoding or a content length

    76             if (entity.isChunked() || entity.getContentLength() < 0) {

    77                 if (ver.lessEquals(HttpVersion.HTTP_1_0)) {

    78                     throw new ProtocolException(

    79                             "Chunked transfer encoding not allowed for " + ver);

    80                 }

    81                 request.addHeader(HTTP.TRANSFER_ENCODING, HTTP.CHUNK_CODING);

    82             } else {

    83                 request.addHeader(HTTP.CONTENT_LEN, Long.toString(entity.getContentLength()));

    84             }

    85             // Specify a content type if known

    86             if (entity.getContentType() != null && !request.containsHeader(

    87                     HTTP.CONTENT_TYPE )) {

    88                 request.addHeader(entity.getContentType());

    89             }

    90             // Specify a content encoding if known

    91             if (entity.getContentEncoding() != null && !request.containsHeader(

    92                     HTTP.CONTENT_ENCODING)) {

    93                 request.addHeader(entity.getContentEncoding());

    94             }

    95         }

    96     }

    98 }

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