Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.volley.toolbox; |
| 18 | |
| 19 | import com.android.volley.AuthFailureError; |
| 20 | import com.android.volley.Request; |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 21 | import com.android.volley.Request.Method; |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 22 | |
| 23 | import org.apache.http.Header; |
| 24 | import org.apache.http.HttpEntity; |
| 25 | import org.apache.http.HttpResponse; |
| 26 | import org.apache.http.ProtocolVersion; |
| 27 | import org.apache.http.StatusLine; |
| 28 | import org.apache.http.entity.BasicHttpEntity; |
| 29 | import org.apache.http.message.BasicHeader; |
| 30 | import org.apache.http.message.BasicHttpResponse; |
| 31 | import org.apache.http.message.BasicStatusLine; |
| 32 | |
| 33 | import java.io.DataOutputStream; |
| 34 | import java.io.IOException; |
| 35 | import java.io.InputStream; |
| 36 | import java.net.HttpURLConnection; |
| 37 | import java.net.URL; |
| 38 | import java.util.HashMap; |
| 39 | import java.util.List; |
| 40 | import java.util.Map; |
| 41 | import java.util.Map.Entry; |
| 42 | |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 43 | import javax.net.ssl.HttpsURLConnection; |
| 44 | import javax.net.ssl.SSLSocketFactory; |
| 45 | |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 46 | /** |
| 47 | * An {@link HttpStack} based on {@link HttpURLConnection}. |
| 48 | */ |
| 49 | public class HurlStack implements HttpStack { |
| 50 | |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 51 | private static final String HEADER_CONTENT_TYPE = "Content-Type"; |
| 52 | |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 53 | /** |
| 54 | * An interface for transforming URLs before use. |
| 55 | */ |
| 56 | public interface UrlRewriter { |
| 57 | /** |
| 58 | * Returns a URL to use instead of the provided one, or null to indicate |
| 59 | * this URL should not be used at all. |
| 60 | */ |
| 61 | public String rewriteUrl(String originalUrl); |
| 62 | } |
| 63 | |
| 64 | private final UrlRewriter mUrlRewriter; |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 65 | private final SSLSocketFactory mSslSocketFactory; |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 66 | |
| 67 | public HurlStack() { |
| 68 | this(null); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @param urlRewriter Rewriter to use for request URLs |
| 73 | */ |
| 74 | public HurlStack(UrlRewriter urlRewriter) { |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 75 | this(urlRewriter, null); |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * @param urlRewriter Rewriter to use for request URLs |
| 80 | * @param sslSocketFactory SSL factory to use for HTTPS connections |
| 81 | */ |
| 82 | public HurlStack(UrlRewriter urlRewriter, SSLSocketFactory sslSocketFactory) { |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 83 | mUrlRewriter = urlRewriter; |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 84 | mSslSocketFactory = sslSocketFactory; |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders) |
| 89 | throws IOException, AuthFailureError { |
| 90 | String url = request.getUrl(); |
| 91 | HashMap<String, String> map = new HashMap<String, String>(); |
| 92 | map.putAll(request.getHeaders()); |
| 93 | map.putAll(additionalHeaders); |
| 94 | if (mUrlRewriter != null) { |
| 95 | String rewritten = mUrlRewriter.rewriteUrl(url); |
| 96 | if (rewritten == null) { |
| 97 | throw new IOException("URL blocked by rewriter: " + url); |
| 98 | } |
| 99 | url = rewritten; |
| 100 | } |
| 101 | URL parsedUrl = new URL(url); |
| 102 | HttpURLConnection connection = openConnection(parsedUrl, request); |
| 103 | for (String headerName : map.keySet()) { |
| 104 | connection.addRequestProperty(headerName, map.get(headerName)); |
| 105 | } |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 106 | setConnectionParametersForRequest(connection, request); |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 107 | // Initialize HttpResponse with data from the HttpURLConnection. |
| 108 | ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1); |
| 109 | int responseCode = connection.getResponseCode(); |
| 110 | if (responseCode == -1) { |
| 111 | // -1 is returned by getResponseCode() if the response code could not be retrieved. |
| 112 | // Signal to the caller that something was wrong with the connection. |
| 113 | throw new IOException("Could not retrieve response code from HttpUrlConnection."); |
| 114 | } |
| 115 | StatusLine responseStatus = new BasicStatusLine(protocolVersion, |
| 116 | connection.getResponseCode(), connection.getResponseMessage()); |
| 117 | BasicHttpResponse response = new BasicHttpResponse(responseStatus); |
| 118 | response.setEntity(entityFromConnection(connection)); |
| 119 | for (Entry<String, List<String>> header : connection.getHeaderFields().entrySet()) { |
| 120 | if (header.getKey() != null) { |
| 121 | Header h = new BasicHeader(header.getKey(), header.getValue().get(0)); |
| 122 | response.addHeader(h); |
| 123 | } |
| 124 | } |
| 125 | return response; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Initializes an {@link HttpEntity} from the given {@link HttpURLConnection}. |
| 130 | * @param connection |
| 131 | * @return an HttpEntity populated with data from <code>connection</code>. |
| 132 | */ |
| 133 | private static HttpEntity entityFromConnection(HttpURLConnection connection) { |
| 134 | BasicHttpEntity entity = new BasicHttpEntity(); |
| 135 | InputStream inputStream; |
| 136 | try { |
| 137 | inputStream = connection.getInputStream(); |
| 138 | } catch (IOException ioe) { |
| 139 | inputStream = connection.getErrorStream(); |
| 140 | } |
| 141 | entity.setContent(inputStream); |
| 142 | entity.setContentLength(connection.getContentLength()); |
| 143 | entity.setContentEncoding(connection.getContentEncoding()); |
| 144 | entity.setContentType(connection.getContentType()); |
| 145 | return entity; |
| 146 | } |
| 147 | |
| 148 | /** |
Jake Wharton | 05a1b0e | 2013-05-20 18:01:38 -0700 | [diff] [blame] | 149 | * Create an {@link HttpURLConnection} for the specified {@code url}. |
| 150 | */ |
| 151 | protected HttpURLConnection createConnection(URL url) throws IOException { |
| 152 | return (HttpURLConnection) url.openConnection(); |
| 153 | } |
| 154 | |
| 155 | /** |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 156 | * Opens an {@link HttpURLConnection} with parameters. |
| 157 | * @param url |
| 158 | * @return an open connection |
| 159 | * @throws IOException |
| 160 | */ |
| 161 | private HttpURLConnection openConnection(URL url, Request<?> request) throws IOException { |
Jake Wharton | 05a1b0e | 2013-05-20 18:01:38 -0700 | [diff] [blame] | 162 | HttpURLConnection connection = createConnection(url); |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 163 | |
| 164 | int timeoutMs = request.getTimeoutMs(); |
| 165 | connection.setConnectTimeout(timeoutMs); |
| 166 | connection.setReadTimeout(timeoutMs); |
| 167 | connection.setUseCaches(false); |
| 168 | connection.setDoInput(true); |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 169 | |
| 170 | // use caller-provided custom SslSocketFactory, if any, for HTTPS |
| 171 | if ("https".equals(url.getProtocol()) && mSslSocketFactory != null) { |
| 172 | ((HttpsURLConnection)connection).setSSLSocketFactory(mSslSocketFactory); |
| 173 | } |
| 174 | |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 175 | return connection; |
| 176 | } |
| 177 | |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 178 | @SuppressWarnings("deprecation") |
| 179 | /* package */ static void setConnectionParametersForRequest(HttpURLConnection connection, |
| 180 | Request<?> request) throws IOException, AuthFailureError { |
| 181 | switch (request.getMethod()) { |
| 182 | case Method.DEPRECATED_GET_OR_POST: |
| 183 | // This is the deprecated way that needs to be handled for backwards compatibility. |
| 184 | // If the request's post body is null, then the assumption is that the request is |
| 185 | // GET. Otherwise, it is assumed that the request is a POST. |
| 186 | byte[] postBody = request.getPostBody(); |
| 187 | if (postBody != null) { |
| 188 | // Prepare output. There is no need to set Content-Length explicitly, |
| 189 | // since this is handled by HttpURLConnection using the size of the prepared |
| 190 | // output stream. |
| 191 | connection.setDoOutput(true); |
| 192 | connection.setRequestMethod("POST"); |
| 193 | connection.addRequestProperty(HEADER_CONTENT_TYPE, |
| 194 | request.getPostBodyContentType()); |
| 195 | DataOutputStream out = new DataOutputStream(connection.getOutputStream()); |
| 196 | out.write(postBody); |
| 197 | out.close(); |
| 198 | } |
| 199 | break; |
| 200 | case Method.GET: |
| 201 | // Not necessary to set the request method because connection defaults to GET but |
| 202 | // being explicit here. |
| 203 | connection.setRequestMethod("GET"); |
| 204 | break; |
| 205 | case Method.DELETE: |
| 206 | connection.setRequestMethod("DELETE"); |
| 207 | break; |
| 208 | case Method.POST: |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 209 | connection.setRequestMethod("POST"); |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 210 | addBodyIfExists(connection, request); |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 211 | break; |
| 212 | case Method.PUT: |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 213 | connection.setRequestMethod("PUT"); |
Dan Morrill | 3f081a8 | 2013-03-31 19:35:17 -0700 | [diff] [blame] | 214 | addBodyIfExists(connection, request); |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 215 | break; |
Maurice Chu | 364614b | 2013-11-12 12:08:03 -0800 | [diff] [blame^] | 216 | case Method.HEAD: |
| 217 | connection.setRequestMethod("HEAD"); |
| 218 | break; |
| 219 | case Method.OPTIONS: |
| 220 | connection.setRequestMethod("OPTIONS"); |
| 221 | break; |
| 222 | case Method.TRACE: |
| 223 | connection.setRequestMethod("TRACE"); |
| 224 | break; |
| 225 | case Method.PATCH: |
| 226 | addBodyIfExists(connection, request); |
| 227 | connection.setRequestMethod("PATCH"); |
| 228 | break; |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 229 | default: |
| 230 | throw new IllegalStateException("Unknown method type."); |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | private static void addBodyIfExists(HttpURLConnection connection, Request<?> request) |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 235 | throws IOException, AuthFailureError { |
Jean-Baptiste Queru | e48f443 | 2012-11-07 07:54:36 -0800 | [diff] [blame] | 236 | byte[] body = request.getBody(); |
| 237 | if (body != null) { |
| 238 | connection.setDoOutput(true); |
| 239 | connection.addRequestProperty(HEADER_CONTENT_TYPE, request.getBodyContentType()); |
| 240 | DataOutputStream out = new DataOutputStream(connection.getOutputStream()); |
| 241 | out.write(body); |
| 242 | out.close(); |
| 243 | } |
Jean-Baptiste Queru | d56b88a | 2012-11-07 07:48:57 -0800 | [diff] [blame] | 244 | } |
| 245 | } |