HttpEngine.java revision 7407d6984ce69693097befc9b72609a8156463bb
1c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath/* 2c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * Licensed to the Apache Software Foundation (ASF) under one or more 3c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * contributor license agreements. See the NOTICE file distributed with 4c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * this work for additional information regarding copyright ownership. 5c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * The ASF licenses this file to You under the Apache License, Version 2.0 6c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * (the "License"); you may not use this file except in compliance with 7c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * the License. You may obtain a copy of the License at 8c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * 9c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * http://www.apache.org/licenses/LICENSE-2.0 10c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * 11c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * Unless required by applicable law or agreed to in writing, software 12c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * distributed under the License is distributed on an "AS IS" BASIS, 13c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * See the License for the specific language governing permissions and 15c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * limitations under the License. 16c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath */ 17c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 182231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonpackage com.squareup.okhttp.internal.http; 192231db3e6bb54447a9b14cf004a6cb03c373651cjwilson 202231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.Address; 212231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.Connection; 222231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.OkResponseCache; 232231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.ResponseSource; 242231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.TunnelRequest; 2554cf3446000fdcf88a9e62724f7deb0282e98da1jwilsonimport com.squareup.okhttp.internal.Dns; 262231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.internal.Platform; 272231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport com.squareup.okhttp.internal.Util; 28c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.io.ByteArrayInputStream; 29c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.io.IOException; 30c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.io.InputStream; 31c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.io.OutputStream; 32c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.CacheRequest; 33c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.CacheResponse; 34c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.CookieHandler; 35c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.Proxy; 36c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.URI; 37c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.URISyntaxException; 38c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.net.URL; 392231db3e6bb54447a9b14cf004a6cb03c373651cjwilsonimport java.net.UnknownHostException; 40c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.util.Collections; 41c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.util.Date; 42c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.util.HashMap; 43c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.util.List; 44c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.util.Map; 45c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport java.util.zip.GZIPInputStream; 467899c5ab935cf542069835ec7d3e457db596dbf7Narayan Kamathimport javax.net.ssl.HostnameVerifier; 47c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathimport javax.net.ssl.SSLSocketFactory; 48c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 4954cf3446000fdcf88a9e62724f7deb0282e98da1jwilsonimport static com.squareup.okhttp.internal.Util.EMPTY_BYTE_ARRAY; 5054cf3446000fdcf88a9e62724f7deb0282e98da1jwilsonimport static com.squareup.okhttp.internal.Util.getDefaultPort; 5154cf3446000fdcf88a9e62724f7deb0282e98da1jwilsonimport static com.squareup.okhttp.internal.Util.getEffectivePort; 5254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 53c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath/** 54c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * Handles a single HTTP request/response pair. Each HTTP engine follows this 55c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * lifecycle: 56c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * <ol> 5754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * <li>It is created. 5854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * <li>The HTTP request message is sent with sendRequest(). Once the request 5954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * is sent it is an error to modify the request headers. After 6054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * sendRequest() has been called the request body can be written to if 6154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * it exists. 6254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * <li>The HTTP response message is read with readResponse(). After the 6354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * response has been read the response headers and body can be read. 6454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * All responses have a response body input stream, though in some 6554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * instances this stream is empty. 66c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * </ol> 67c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * 68c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * <p>The request and response may be served by the HTTP response cache, by the 69c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * network, or by both in the event of a conditional GET. 70c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * 71c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * <p>This class may hold a socket connection that needs to be released or 72c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * recycled. By default, this socket connection is held when the last byte of 73c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * the response is consumed. To release the connection when it is no longer 74c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath * required, use {@link #automaticallyReleaseConnectionToPool()}. 75c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath */ 76c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamathpublic class HttpEngine { 7754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private static final CacheResponse GATEWAY_TIMEOUT_RESPONSE = new CacheResponse() { 7854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson @Override public Map<String, List<String>> getHeaders() throws IOException { 7954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Map<String, List<String>> result = new HashMap<String, List<String>>(); 8054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson result.put(null, Collections.singletonList("HTTP/1.1 504 Gateway Timeout")); 8154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return result; 82c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 8354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson @Override public InputStream getBody() throws IOException { 8454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return new ByteArrayInputStream(EMPTY_BYTE_ARRAY); 85c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 8654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson }; 8754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public static final int HTTP_CONTINUE = 100; 8854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 8954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected final HttpURLConnectionImpl policy; 9054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 9154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected final String method; 9254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 9354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private ResponseSource responseSource; 9454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 9554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected Connection connection; 9654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected RouteSelector routeSelector; 9754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private OutputStream requestBodyOut; 9854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 9954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private Transport transport; 10054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 10154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private InputStream responseTransferIn; 10254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private InputStream responseBodyIn; 10354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 10454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private CacheResponse cacheResponse; 10554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private CacheRequest cacheRequest; 10654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 10754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** The time when the request headers were written, or -1 if they haven't been written yet. */ 10854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson long sentRequestMillis = -1; 10954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 11054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 11154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * True if this client added an "Accept-Encoding: gzip" header field and is 11254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * therefore responsible for also decompressing the transfer stream. 11354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 11454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private boolean transparentGzip; 11554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 11654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson final URI uri; 11754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 11854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson final RequestHeaders requestHeaders; 11954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 12054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** Null until a response is received from the network or the cache. */ 12154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson ResponseHeaders responseHeaders; 12254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 12354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // The cache response currently being validated on a conditional get. Null 12454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // if the cached response doesn't exist or doesn't need validation. If the 12554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // conditional get succeeds, these will be used for the response headers and 12654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // body. If it fails, these be closed and set to null. 12754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private ResponseHeaders cachedResponseHeaders; 12854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private InputStream cachedResponseBody; 12954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 13054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 13154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * True if the socket connection should be released to the connection pool 13254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * when the response has been fully read. 13354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 13454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private boolean automaticallyReleaseConnectionToPool; 13554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 13654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** True if the socket connection is no longer needed by this engine. */ 13754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private boolean connectionReleased; 13854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 13954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 14054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * @param requestHeaders the client's supplied request headers. This class 14154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * creates a private copy that it can mutate. 14254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * @param connection the connection used for an intermediate response 14354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * immediately prior to this request/response pair, such as a same-host 14454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * redirect. This engine assumes ownership of the connection and must 14554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * release it when it is unneeded. 14654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 14754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public HttpEngine(HttpURLConnectionImpl policy, String method, RawHeaders requestHeaders, 14854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Connection connection, RetryableOutputStream requestBodyOut) throws IOException { 14954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.policy = policy; 15054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.method = method; 15154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.connection = connection; 15254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.requestBodyOut = requestBodyOut; 15354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 15454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson try { 15554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson uri = Platform.get().toUriLenient(policy.getURL()); 15654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } catch (URISyntaxException e) { 15754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IOException(e); 15854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 15954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 16054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.requestHeaders = new RequestHeaders(uri, new RawHeaders(requestHeaders)); 16154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 16254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 16354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public URI getUri() { 16454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return uri; 16554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 16654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 16754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 16854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Figures out what the response source will be, and opens a socket to that 16954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * source if necessary. Prepares the request headers and gets ready to start 17054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * writing the request body if it exists. 17154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 17254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final void sendRequest() throws IOException { 17354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource != null) { 17454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 17554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 17654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 17754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson prepareRawRequestHeaders(); 17854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson initResponseSource(); 17954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (policy.responseCache instanceof OkResponseCache) { 18054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson ((OkResponseCache) policy.responseCache).trackResponse(responseSource); 18154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 18254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 18354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // The raw response source may require the network, but the request 18454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // headers may forbid network use. In that case, dispose of the network 18554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // response and use a GATEWAY_TIMEOUT response instead, as specified 18654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // by http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.4. 18754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestHeaders.isOnlyIfCached() && responseSource.requiresConnection()) { 18854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource == ResponseSource.CONDITIONAL_CACHE) { 18954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Util.closeQuietly(cachedResponseBody); 19054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 19154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.responseSource = ResponseSource.CACHE; 19254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.cacheResponse = GATEWAY_TIMEOUT_RESPONSE; 19354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson RawHeaders rawResponseHeaders = RawHeaders.fromMultimap(cacheResponse.getHeaders(), true); 19454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson setResponse(new ResponseHeaders(uri, rawResponseHeaders), cacheResponse.getBody()); 19554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 19654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 19754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource.requiresConnection()) { 19854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson sendSocketRequest(); 19954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else if (connection != null) { 20054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson policy.connectionPool.recycle(connection); 20154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connection = null; 20254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 20354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 20454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 20554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 20654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Initialize the source for this response. It may be corrected later if the 20754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * request headers forbids network use. 20854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 20954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private void initResponseSource() throws IOException { 21054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseSource = ResponseSource.NETWORK; 21154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!policy.getUseCaches() || policy.responseCache == null) { 21254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 21354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 21454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 21554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson CacheResponse candidate = 21654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson policy.responseCache.get(uri, method, requestHeaders.getHeaders().toMultimap(false)); 21754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (candidate == null) { 21854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 21954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 22054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 22154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Map<String, List<String>> responseHeadersMap = candidate.getHeaders(); 22254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson cachedResponseBody = candidate.getBody(); 22354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!acceptCacheResponseType(candidate) 22454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson || responseHeadersMap == null 22554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson || cachedResponseBody == null) { 22654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Util.closeQuietly(cachedResponseBody); 22754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 22854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 22954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 23054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson RawHeaders rawResponseHeaders = RawHeaders.fromMultimap(responseHeadersMap, true); 23154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson cachedResponseHeaders = new ResponseHeaders(uri, rawResponseHeaders); 23254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson long now = System.currentTimeMillis(); 23354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.responseSource = cachedResponseHeaders.chooseResponseSource(now, requestHeaders); 23454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource == ResponseSource.CACHE) { 23554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.cacheResponse = candidate; 23654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson setResponse(cachedResponseHeaders, cachedResponseBody); 23754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else if (responseSource == ResponseSource.CONDITIONAL_CACHE) { 23854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.cacheResponse = candidate; 23954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else if (responseSource == ResponseSource.NETWORK) { 24054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Util.closeQuietly(cachedResponseBody); 24154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else { 24254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new AssertionError(); 24354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 24454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 24554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 24654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private void sendSocketRequest() throws IOException { 24754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (connection == null) { 24854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connect(); 24954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 25054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 25154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (transport != null) { 25254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 25354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 25454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 25554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson transport = (Transport) connection.newTransport(this); 25654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 25754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (hasRequestBody() && requestBodyOut == null) { 25854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // Create a request body if we don't have one already. We'll already 25954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // have one if we're retrying a failed POST. 26054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestBodyOut = transport.createRequestBody(); 26154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 26254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 26354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 26454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** Connect to the origin server either directly or via a proxy. */ 26554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected final void connect() throws IOException { 26654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (connection != null) { 26754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 26854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 26954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (routeSelector == null) { 27054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson String uriHost = uri.getHost(); 27154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (uriHost == null) { 27254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new UnknownHostException(uri.toString()); 27354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 2747407d6984ce69693097befc9b72609a8156463bbNarayan Kamath SSLSocketFactory sslSocketFactory = null; 2757407d6984ce69693097befc9b72609a8156463bbNarayan Kamath HostnameVerifier hostnameVerifier = null; 2767407d6984ce69693097befc9b72609a8156463bbNarayan Kamath if (uri.getScheme().equalsIgnoreCase("https")) { 2777407d6984ce69693097befc9b72609a8156463bbNarayan Kamath sslSocketFactory = policy.sslSocketFactory; 2787407d6984ce69693097befc9b72609a8156463bbNarayan Kamath hostnameVerifier = policy.hostnameVerifier; 2797407d6984ce69693097befc9b72609a8156463bbNarayan Kamath } 2807407d6984ce69693097befc9b72609a8156463bbNarayan Kamath Address address = new Address(uriHost, getEffectivePort(uri), sslSocketFactory, 2817407d6984ce69693097befc9b72609a8156463bbNarayan Kamath hostnameVerifier, policy.requestedProxy); 28254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson routeSelector = 28354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson new RouteSelector(address, uri, policy.proxySelector, policy.connectionPool, Dns.DEFAULT); 28454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 28554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connection = routeSelector.next(); 28654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!connection.isConnected()) { 28754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connection.connect(policy.getConnectTimeout(), policy.getReadTimeout(), getTunnelConfig()); 28854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson policy.connectionPool.maybeShare(connection); 28954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 29054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connected(connection); 2917407d6984ce69693097befc9b72609a8156463bbNarayan Kamath if (connection.getProxy() != policy.requestedProxy) { 2927407d6984ce69693097befc9b72609a8156463bbNarayan Kamath // Update the request line if the proxy changed; it may need a host name. 29354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.getHeaders().setRequestLine(getRequestLine()); 29454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 29554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 29654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 29754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 29854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Called after a socket connection has been created or retrieved from the 29954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * pool. Subclasses use this hook to get a reference to the TLS data. 30054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 30154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected void connected(Connection connection) { 30254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 30354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 30454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 30554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Called immediately before the transport transmits HTTP request headers. 30654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * This is used to observe the sent time should the request be cached. 30754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 30854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public void writingRequestHeaders() { 30954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (sentRequestMillis != -1) { 31054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 31154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 31254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson sentRequestMillis = System.currentTimeMillis(); 31354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 31454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 31554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 31654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * @param body the response body, or null if it doesn't exist or isn't 31754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * available. 31854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 31954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private void setResponse(ResponseHeaders headers, InputStream body) throws IOException { 32054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (this.responseBodyIn != null) { 32154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 32254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 32354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson this.responseHeaders = headers; 32454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (body != null) { 32554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson initContentStream(body); 32654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 32754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 32854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 32954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson boolean hasRequestBody() { 33054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return method.equals("POST") || method.equals("PUT"); 33154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 33254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 33354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** Returns the request body or null if this request doesn't have a body. */ 33454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final OutputStream getRequestBody() { 33554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource == null) { 33654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 33754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 33854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return requestBodyOut; 33954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 34054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 34154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final boolean hasResponse() { 34254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return responseHeaders != null; 34354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 34454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 34554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final RequestHeaders getRequestHeaders() { 34654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return requestHeaders; 34754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 34854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 34954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final ResponseHeaders getResponseHeaders() { 35054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseHeaders == null) { 35154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 35254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 35354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return responseHeaders; 35454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 35554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 35654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final int getResponseCode() { 35754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseHeaders == null) { 35854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 35954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 36054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return responseHeaders.getHeaders().getResponseCode(); 36154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 36254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 36354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final InputStream getResponseBody() { 36454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseHeaders == null) { 36554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException(); 36654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 36754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return responseBodyIn; 36854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 36954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 37054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final CacheResponse getCacheResponse() { 37154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return cacheResponse; 37254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 37354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 37454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final Connection getConnection() { 37554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return connection; 37654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 37754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 37854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 37954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Returns true if {@code cacheResponse} is of the right type. This 38054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * condition is necessary but not sufficient for the cached response to 38154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * be used. 38254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 38354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected boolean acceptCacheResponseType(CacheResponse cacheResponse) { 38454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return true; 38554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 38654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 38754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private void maybeCache() throws IOException { 38854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // Are we caching at all? 38954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!policy.getUseCaches() || policy.responseCache == null) { 39054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 39154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 39254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 39354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // Should we cache this response for this request? 39454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!responseHeaders.isCacheable(requestHeaders)) { 39554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 39654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 39754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 39854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // Offer this request to the cache. 3997407d6984ce69693097befc9b72609a8156463bbNarayan Kamath cacheRequest = policy.responseCache.put(uri, policy.getHttpConnectionToCache()); 40054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 40154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 40254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 40354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Cause the socket connection to be released to the connection pool when 40454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * it is no longer needed. If it is already unneeded, it will be pooled 40554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * immediately. Otherwise the connection is held so that redirects can be 40654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * handled by the same connection. 40754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 40854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final void automaticallyReleaseConnectionToPool() { 40954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson automaticallyReleaseConnectionToPool = true; 41054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (connection != null && connectionReleased) { 41154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson policy.connectionPool.recycle(connection); 41254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connection = null; 41354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 41454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 41554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 41654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 41754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Releases this engine so that its resources may be either reused or 41854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * closed. Also call {@link #automaticallyReleaseConnectionToPool} unless 41954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * the connection will be used to follow a redirect. 42054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 42154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final void release(boolean streamCancelled) { 42254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // If the response body comes from the cache, close it. 42354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseBodyIn == cachedResponseBody) { 42454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Util.closeQuietly(responseBodyIn); 425c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 426c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 42754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!connectionReleased && connection != null) { 42854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connectionReleased = true; 429c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 43054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (transport == null || !transport.makeReusable(streamCancelled, requestBodyOut, 43154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseTransferIn)) { 43254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Util.closeQuietly(connection); 43354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connection = null; 43454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else if (automaticallyReleaseConnectionToPool) { 43554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson policy.connectionPool.recycle(connection); 43654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson connection = null; 43754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 43854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 43954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 440c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 44154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private void initContentStream(InputStream transferStream) throws IOException { 44254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseTransferIn = transferStream; 44354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (transparentGzip && responseHeaders.isContentEncodingGzip()) { 44454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // If the response was transparently gzipped, remove the gzip header field 44554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // so clients don't double decompress. http://b/3009828 44654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // 44754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // Also remove the Content-Length in this case because it contains the 44854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // length 528 of the gzipped response. This isn't terribly useful and is 44954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // dangerous because 529 clients can query the content length, but not 45054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // the content encoding. 45154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseHeaders.stripContentEncoding(); 45254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseHeaders.stripContentLength(); 45354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseBodyIn = new GZIPInputStream(transferStream); 45454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else { 45554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseBodyIn = transferStream; 45654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 45754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 45854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 45954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 46054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Returns true if the response must have a (possibly 0-length) body. 46154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * See RFC 2616 section 4.3. 46254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 46354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final boolean hasResponseBody() { 46454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson int responseCode = responseHeaders.getHeaders().getResponseCode(); 46554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 46654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // HEAD requests never yield a body regardless of the response headers. 46754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (method.equals("HEAD")) { 46854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return false; 46954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 47054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 47154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if ((responseCode < HTTP_CONTINUE || responseCode >= 200) 47254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson && responseCode != HttpURLConnectionImpl.HTTP_NO_CONTENT 47354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson && responseCode != HttpURLConnectionImpl.HTTP_NOT_MODIFIED) { 47454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return true; 47554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 47654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 47754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // If the Content-Length or Transfer-Encoding headers disagree with the 47854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // response code, the response is malformed. For best compatibility, we 47954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson // honor the headers. 48054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseHeaders.getContentLength() != -1 || responseHeaders.isChunked()) { 48154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return true; 48254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 48354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 48454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return false; 48554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 48654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 48754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 48854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Populates requestHeaders with defaults and cookies. 48954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * 49054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * <p>This client doesn't specify a default {@code Accept} header because it 49154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * doesn't know what content types the application is interested in. 49254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 49354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private void prepareRawRequestHeaders() throws IOException { 49454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.getHeaders().setRequestLine(getRequestLine()); 49554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 49654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestHeaders.getUserAgent() == null) { 49754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setUserAgent(getDefaultUserAgent()); 49854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 49954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 50054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestHeaders.getHost() == null) { 50154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setHost(getOriginAddress(policy.getURL())); 50254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 50354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 50454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if ((connection == null || connection.getHttpMinorVersion() != 0) 50554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson && requestHeaders.getConnection() == null) { 50654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setConnection("Keep-Alive"); 50754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 50854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 50954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestHeaders.getAcceptEncoding() == null) { 51054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson transparentGzip = true; 51154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setAcceptEncoding("gzip"); 51254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 51354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 51454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (hasRequestBody() && requestHeaders.getContentType() == null) { 51554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setContentType("application/x-www-form-urlencoded"); 51654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 51754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 51854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson long ifModifiedSince = policy.getIfModifiedSince(); 51954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (ifModifiedSince != 0) { 52054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setIfModifiedSince(new Date(ifModifiedSince)); 52154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 52254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 52354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson CookieHandler cookieHandler = policy.cookieHandler; 52454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (cookieHandler != null) { 52554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.addCookies( 52654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson cookieHandler.get(uri, requestHeaders.getHeaders().toMultimap(false))); 52754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 52854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 52954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 53054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 53154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Returns the request status line, like "GET / HTTP/1.1". This is exposed 53254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * to the application by {@link HttpURLConnectionImpl#getHeaderFields}, so 53354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * it needs to be set even if the transport is SPDY. 53454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 53554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson String getRequestLine() { 53654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson String protocol = 53754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson (connection == null || connection.getHttpMinorVersion() != 0) ? "HTTP/1.1" : "HTTP/1.0"; 53854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return method + " " + requestString() + " " + protocol; 53954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 54054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 54154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson private String requestString() { 54254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson URL url = policy.getURL(); 54354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (includeAuthorityInRequestLine()) { 54454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return url.toString(); 54554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else { 54654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return requestPath(url); 54754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 54854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 54954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 55054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 55154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Returns the path to request, like the '/' in 'GET / HTTP/1.1'. Never 55254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * empty, even if the request URL is. Includes the query component if it 55354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * exists. 55454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 55554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public static String requestPath(URL url) { 55654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson String fileOnly = url.getFile(); 55754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (fileOnly == null) { 55854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return "/"; 55954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else if (!fileOnly.startsWith("/")) { 56054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return "/" + fileOnly; 56154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else { 56254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return fileOnly; 563c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 56454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 565c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 56654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 56754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Returns true if the request line should contain the full URL with host 56854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * and port (like "GET http://android.com/foo HTTP/1.1") or only the path 56954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * (like "GET /foo HTTP/1.1"). 57054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * 57154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * <p>This is non-final because for HTTPS it's never necessary to supply the 57254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * full URL, even if a proxy is in use. 57354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 57454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected boolean includeAuthorityInRequestLine() { 5757407d6984ce69693097befc9b72609a8156463bbNarayan Kamath return connection == null 5767407d6984ce69693097befc9b72609a8156463bbNarayan Kamath ? policy.usingProxy() // A proxy was requested. 5777407d6984ce69693097befc9b72609a8156463bbNarayan Kamath : connection.getProxy().type() == Proxy.Type.HTTP; // A proxy was selected. 57854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 57954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 58054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public static String getDefaultUserAgent() { 58154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson String agent = System.getProperty("http.agent"); 58254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return agent != null ? agent : ("Java" + System.getProperty("java.version")); 58354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 58454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 58554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public static String getOriginAddress(URL url) { 58654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson int port = url.getPort(); 58754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson String result = url.getHost(); 58854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (port > 0 && port != getDefaultPort(url.getProtocol())) { 58954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson result = result + ":" + port; 59054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 59154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return result; 59254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 59354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 59454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson /** 59554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * Flushes the remaining request header and body, parses the HTTP response 59654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson * headers and starts reading the HTTP response body if it exists. 59754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson */ 59854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public final void readResponse() throws IOException { 59954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (hasResponse()) { 60054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 60154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 60254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 60354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource == null) { 60454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson throw new IllegalStateException("readResponse() without sendRequest()"); 60554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 60654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 60754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (!responseSource.requiresConnection()) { 60854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 60954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 61054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 61154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (sentRequestMillis == -1) { 61254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestBodyOut instanceof RetryableOutputStream) { 61354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson int contentLength = ((RetryableOutputStream) requestBodyOut).contentLength(); 61454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestHeaders.setContentLength(contentLength); 61554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 61654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson transport.writeRequestHeaders(); 61754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 61854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 61954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestBodyOut != null) { 62054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson requestBodyOut.close(); 62154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (requestBodyOut instanceof RetryableOutputStream) { 62254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson transport.writeRequestBody((RetryableOutputStream) requestBodyOut); 62354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 62454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 62554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 62654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson transport.flushRequest(); 62754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 62854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseHeaders = transport.readResponseHeaders(); 62954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson responseHeaders.setLocalTimestamps(sentRequestMillis, System.currentTimeMillis()); 63054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson 63154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (responseSource == ResponseSource.CONDITIONAL_CACHE) { 63254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (cachedResponseHeaders.validate(responseHeaders)) { 63354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson release(false); 63454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson ResponseHeaders combinedHeaders = cachedResponseHeaders.combine(responseHeaders); 63554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson setResponse(combinedHeaders, cachedResponseBody); 63654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (policy.responseCache instanceof OkResponseCache) { 63754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson OkResponseCache httpResponseCache = (OkResponseCache) policy.responseCache; 63854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson httpResponseCache.trackConditionalCacheHit(); 6397407d6984ce69693097befc9b72609a8156463bbNarayan Kamath httpResponseCache.update(cacheResponse, policy.getHttpConnectionToCache()); 640c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 64154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return; 64254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } else { 64354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson Util.closeQuietly(cachedResponseBody); 64454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 645c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 646c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 64754cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (hasResponseBody()) { 64854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson maybeCache(); // reentrant. this calls into user code which may call back into this! 649c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath } 650c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 65154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson initContentStream(transport.getTransferStream(cacheRequest)); 65254cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 653c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath 65454cf3446000fdcf88a9e62724f7deb0282e98da1jwilson protected TunnelRequest getTunnelConfig() { 65554cf3446000fdcf88a9e62724f7deb0282e98da1jwilson return null; 65654cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 6577899c5ab935cf542069835ec7d3e457db596dbf7Narayan Kamath 65854cf3446000fdcf88a9e62724f7deb0282e98da1jwilson public void receiveHeaders(RawHeaders headers) throws IOException { 65954cf3446000fdcf88a9e62724f7deb0282e98da1jwilson CookieHandler cookieHandler = policy.cookieHandler; 66054cf3446000fdcf88a9e62724f7deb0282e98da1jwilson if (cookieHandler != null) { 66154cf3446000fdcf88a9e62724f7deb0282e98da1jwilson cookieHandler.put(uri, headers.toMultimap(true)); 6627899c5ab935cf542069835ec7d3e457db596dbf7Narayan Kamath } 66354cf3446000fdcf88a9e62724f7deb0282e98da1jwilson } 664c3f6f16bd4a2338e88275641b9f2f56e816ca377Narayan Kamath} 665