Wed, 31 Dec 2014 07:22:50 +0100
Correct previous dual key logic pending first delivery installment.
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.Header;
33 import ch.boye.httpclientandroidlib.HttpEntity;
34 import ch.boye.httpclientandroidlib.HttpException;
35 import ch.boye.httpclientandroidlib.HttpRequest;
36 import ch.boye.httpclientandroidlib.HttpResponse;
37 import ch.boye.httpclientandroidlib.HttpResponseInterceptor;
38 import ch.boye.httpclientandroidlib.HttpStatus;
39 import ch.boye.httpclientandroidlib.HttpVersion;
40 import ch.boye.httpclientandroidlib.ProtocolVersion;
42 /**
43 * ResponseConnControl is responsible for adding <code>Connection</code> header
44 * to the outgoing responses, which is essential for managing persistence of
45 * <code>HTTP/1.0</code> connections. This interceptor is recommended for
46 * server side protocol processors.
47 *
48 * @since 4.0
49 */
50 public class ResponseConnControl implements HttpResponseInterceptor {
52 public ResponseConnControl() {
53 super();
54 }
56 public void process(final HttpResponse response, final HttpContext context)
57 throws HttpException, IOException {
58 if (response == null) {
59 throw new IllegalArgumentException("HTTP response may not be null");
60 }
61 if (context == null) {
62 throw new IllegalArgumentException("HTTP context may not be null");
63 }
64 // Always drop connection after certain type of responses
65 int status = response.getStatusLine().getStatusCode();
66 if (status == HttpStatus.SC_BAD_REQUEST ||
67 status == HttpStatus.SC_REQUEST_TIMEOUT ||
68 status == HttpStatus.SC_LENGTH_REQUIRED ||
69 status == HttpStatus.SC_REQUEST_TOO_LONG ||
70 status == HttpStatus.SC_REQUEST_URI_TOO_LONG ||
71 status == HttpStatus.SC_SERVICE_UNAVAILABLE ||
72 status == HttpStatus.SC_NOT_IMPLEMENTED) {
73 response.setHeader(HTTP.CONN_DIRECTIVE, HTTP.CONN_CLOSE);
74 return;
75 }
76 // Always drop connection for HTTP/1.0 responses and below
77 // if the content body cannot be correctly delimited
78 HttpEntity entity = response.getEntity();
79 if (entity != null) {
80 ProtocolVersion ver = response.getStatusLine().getProtocolVersion();
81 if (entity.getContentLength() < 0 &&
82 (!entity.isChunked() || ver.lessEquals(HttpVersion.HTTP_1_0))) {
83 response.setHeader(HTTP.CONN_DIRECTIVE, HTTP.CONN_CLOSE);
84 return;
85 }
86 }
87 // Drop connection if requested by the client
88 HttpRequest request = (HttpRequest)
89 context.getAttribute(ExecutionContext.HTTP_REQUEST);
90 if (request != null) {
91 Header header = request.getFirstHeader(HTTP.CONN_DIRECTIVE);
92 if (header != null) {
93 response.setHeader(HTTP.CONN_DIRECTIVE, header.getValue());
94 }
95 }
96 }
98 }