diff options
Diffstat (limited to 'mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestContent.java')
-rw-r--r-- | mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestContent.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestContent.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestContent.java new file mode 100644 index 000000000..2f90ad6d8 --- /dev/null +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestContent.java @@ -0,0 +1,127 @@ +/* + * ==================================================================== + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * ==================================================================== + * + * This software consists of voluntary contributions made by many + * individuals on behalf of the Apache Software Foundation. For more + * information on the Apache Software Foundation, please see + * <http://www.apache.org/>. + * + */ + +package ch.boye.httpclientandroidlib.protocol; + +import java.io.IOException; + +import ch.boye.httpclientandroidlib.HttpEntity; +import ch.boye.httpclientandroidlib.HttpEntityEnclosingRequest; +import ch.boye.httpclientandroidlib.HttpException; +import ch.boye.httpclientandroidlib.HttpRequest; +import ch.boye.httpclientandroidlib.HttpRequestInterceptor; +import ch.boye.httpclientandroidlib.HttpVersion; +import ch.boye.httpclientandroidlib.ProtocolException; +import ch.boye.httpclientandroidlib.ProtocolVersion; +import ch.boye.httpclientandroidlib.annotation.Immutable; +import ch.boye.httpclientandroidlib.util.Args; + +/** + * RequestContent is the most important interceptor for outgoing requests. + * It is responsible for delimiting content length by adding + * <code>Content-Length</code> or <code>Transfer-Content</code> headers based + * on the properties of the enclosed entity and the protocol version. + * This interceptor is required for correct functioning of client side protocol + * processors. + * + * @since 4.0 + */ +@Immutable +public class RequestContent implements HttpRequestInterceptor { + + private final boolean overwrite; + + /** + * Default constructor. The <code>Content-Length</code> or <code>Transfer-Encoding</code> + * will cause the interceptor to throw {@link ProtocolException} if already present in the + * response message. + */ + public RequestContent() { + this(false); + } + + /** + * Constructor that can be used to fine-tune behavior of this interceptor. + * + * @param overwrite If set to <code>true</code> the <code>Content-Length</code> and + * <code>Transfer-Encoding</code> headers will be created or updated if already present. + * If set to <code>false</code> the <code>Content-Length</code> and + * <code>Transfer-Encoding</code> headers will cause the interceptor to throw + * {@link ProtocolException} if already present in the response message. + * + * @since 4.2 + */ + public RequestContent(final boolean overwrite) { + super(); + this.overwrite = overwrite; + } + + public void process(final HttpRequest request, final HttpContext context) + throws HttpException, IOException { + Args.notNull(request, "HTTP request"); + if (request instanceof HttpEntityEnclosingRequest) { + if (this.overwrite) { + request.removeHeaders(HTTP.TRANSFER_ENCODING); + request.removeHeaders(HTTP.CONTENT_LEN); + } else { + if (request.containsHeader(HTTP.TRANSFER_ENCODING)) { + throw new ProtocolException("Transfer-encoding header already present"); + } + if (request.containsHeader(HTTP.CONTENT_LEN)) { + throw new ProtocolException("Content-Length header already present"); + } + } + final ProtocolVersion ver = request.getRequestLine().getProtocolVersion(); + final HttpEntity entity = ((HttpEntityEnclosingRequest)request).getEntity(); + if (entity == null) { + request.addHeader(HTTP.CONTENT_LEN, "0"); + return; + } + // Must specify a transfer encoding or a content length + if (entity.isChunked() || entity.getContentLength() < 0) { + if (ver.lessEquals(HttpVersion.HTTP_1_0)) { + throw new ProtocolException( + "Chunked transfer encoding not allowed for " + ver); + } + request.addHeader(HTTP.TRANSFER_ENCODING, HTTP.CHUNK_CODING); + } else { + request.addHeader(HTTP.CONTENT_LEN, Long.toString(entity.getContentLength())); + } + // Specify a content type if known + if (entity.getContentType() != null && !request.containsHeader( + HTTP.CONTENT_TYPE )) { + request.addHeader(entity.getContentType()); + } + // Specify a content encoding if known + if (entity.getContentEncoding() != null && !request.containsHeader( + HTTP.CONTENT_ENCODING)) { + request.addHeader(entity.getContentEncoding()); + } + } + } + +} |