mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestExpectContinue.java

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/RequestExpectContinue.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,78 @@
     1.4 +/*
     1.5 + * ====================================================================
     1.6 + * Licensed to the Apache Software Foundation (ASF) under one
     1.7 + * or more contributor license agreements.  See the NOTICE file
     1.8 + * distributed with this work for additional information
     1.9 + * regarding copyright ownership.  The ASF licenses this file
    1.10 + * to you under the Apache License, Version 2.0 (the
    1.11 + * "License"); you may not use this file except in compliance
    1.12 + * with the License.  You may obtain a copy of the License at
    1.13 + *
    1.14 + *   http://www.apache.org/licenses/LICENSE-2.0
    1.15 + *
    1.16 + * Unless required by applicable law or agreed to in writing,
    1.17 + * software distributed under the License is distributed on an
    1.18 + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    1.19 + * KIND, either express or implied.  See the License for the
    1.20 + * specific language governing permissions and limitations
    1.21 + * under the License.
    1.22 + * ====================================================================
    1.23 + *
    1.24 + * This software consists of voluntary contributions made by many
    1.25 + * individuals on behalf of the Apache Software Foundation.  For more
    1.26 + * information on the Apache Software Foundation, please see
    1.27 + * <http://www.apache.org/>.
    1.28 + *
    1.29 + */
    1.30 +
    1.31 +package ch.boye.httpclientandroidlib.protocol;
    1.32 +
    1.33 +import java.io.IOException;
    1.34 +
    1.35 +import ch.boye.httpclientandroidlib.HttpEntity;
    1.36 +import ch.boye.httpclientandroidlib.HttpEntityEnclosingRequest;
    1.37 +import ch.boye.httpclientandroidlib.HttpException;
    1.38 +import ch.boye.httpclientandroidlib.HttpRequest;
    1.39 +import ch.boye.httpclientandroidlib.HttpRequestInterceptor;
    1.40 +import ch.boye.httpclientandroidlib.HttpVersion;
    1.41 +import ch.boye.httpclientandroidlib.ProtocolVersion;
    1.42 +import ch.boye.httpclientandroidlib.params.HttpProtocolParams;
    1.43 +
    1.44 +/**
    1.45 + * RequestExpectContinue is responsible for enabling the 'expect-continue'
    1.46 + * handshake by adding <code>Expect</code> header. This interceptor is
    1.47 + * recommended for client side protocol processors.
    1.48 + * <p>
    1.49 + * The following parameters can be used to customize the behavior of this
    1.50 + * class:
    1.51 + * <ul>
    1.52 + *  <li>{@link ch.boye.httpclientandroidlib.params.CoreProtocolPNames#USE_EXPECT_CONTINUE}</li>
    1.53 + * </ul>
    1.54 + *
    1.55 + * @since 4.0
    1.56 + */
    1.57 +public class RequestExpectContinue implements HttpRequestInterceptor {
    1.58 +
    1.59 +    public RequestExpectContinue() {
    1.60 +        super();
    1.61 +    }
    1.62 +
    1.63 +    public void process(final HttpRequest request, final HttpContext context)
    1.64 +            throws HttpException, IOException {
    1.65 +        if (request == null) {
    1.66 +            throw new IllegalArgumentException("HTTP request may not be null");
    1.67 +        }
    1.68 +        if (request instanceof HttpEntityEnclosingRequest) {
    1.69 +            HttpEntity entity = ((HttpEntityEnclosingRequest)request).getEntity();
    1.70 +            // Do not send the expect header if request body is known to be empty
    1.71 +            if (entity != null && entity.getContentLength() != 0) {
    1.72 +                ProtocolVersion ver = request.getRequestLine().getProtocolVersion();
    1.73 +                if (HttpProtocolParams.useExpectContinue(request.getParams())
    1.74 +                        && !ver.lessEquals(HttpVersion.HTTP_1_0)) {
    1.75 +                    request.addHeader(HTTP.EXPECT_DIRECTIVE, HTTP.EXPECT_CONTINUE);
    1.76 +                }
    1.77 +            }
    1.78 +        }
    1.79 +    }
    1.80 +
    1.81 +}

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