15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This file declares HttpCache::Transaction, a private class of HttpCache so 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// it should only be included by http_cache.cc 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef NET_HTTP_HTTP_CACHE_TRANSACTION_H_ 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define NET_HTTP_HTTP_CACHE_TRANSACTION_H_ 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/time/time.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/completion_callback.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/net_log.h" 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/base/request_priority.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_cache.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_request_headers.h" 19eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "net/http/http_response_info.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_transaction.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class PartialData; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct HttpRequestInfo; 2690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)struct LoadTimingInfo; 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This is the transaction that is returned by the HttpCache transaction 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// factory. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class HttpCache::Transaction : public HttpTransaction { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The transaction has the following modes, which apply to how it may access 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // its cache entry. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // o If the mode of the transaction is NONE, then it is in "pass through" 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // mode and all methods just forward to the inner network transaction. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // o If the mode of the transaction is only READ, then it may only read from 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the cache entry. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // o If the mode of the transaction is only WRITE, then it may only write to 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the cache entry. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // o If the mode of the transaction is READ_WRITE, then the transaction may 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // optionally modify the cache entry (e.g., possibly corresponding to 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // cache validation). 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // o If the mode of the transaction is UPDATE, then the transaction may 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // update existing cache entries, but will never create a new entry or 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // respond using the entry read from the cache. 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum Mode { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NONE = 0, 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) READ_META = 1 << 0, 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) READ_DATA = 1 << 1, 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) READ = READ_META | READ_DATA, 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE = 1 << 2, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) READ_WRITE = READ | WRITE, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UPDATE = READ_META | WRITE, // READ_WRITE & ~READ_DATA 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) Transaction(RequestPriority priority, 625d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) HttpCache* cache); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~Transaction(); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mode mode() const { return mode_; } 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& key() const { return cache_key_; } 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Writes |buf_len| bytes of meta-data from the provided buffer |buf|. to the 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // HTTP cache entry that backs this transaction (if any). 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the number of bytes actually written, or a net error code. If the 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // operation cannot complete immediately, returns ERR_IO_PENDING, grabs a 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reference to the buffer (until completion), and notifies the caller using 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the provided |callback| when the operation finishes. 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The first time this method is called for a given transaction, previous 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // meta-data will be overwritten with the provided data, and subsequent 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // invocations will keep appending to the cached entry. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // In order to guarantee that the metadata is set to the correct entry, the 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // response (or response info) must be evaluated by the caller, for instance 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to make sure that the response_time is as expected, before calling this 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // method. 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int WriteMetadata(IOBuffer* buf, 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int buf_len, 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback); 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This transaction is being deleted and we are not done writing to the cache. 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We need to indicate that the response data was truncated. Returns true on 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // success. Keep in mind that this operation may have side effects, such as 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // deleting the active entry. 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool AddTruncatedFlag(); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HttpCache::ActiveEntry* entry() { return entry_; } 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the LoadState of the writer transaction of a given ActiveEntry. In 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // other words, returns the LoadState of this transaction without asking the 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // http cache, because this transaction should be the one currently writing 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to the cache entry. 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LoadState GetWriterLoadState() const; 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& io_callback() { return io_callback_; } 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const BoundNetLog& net_log() const; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // HttpTransaction methods: 1072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual int Start(const HttpRequestInfo* request_info, 1082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const CompletionCallback& callback, 1092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const BoundNetLog& net_log) OVERRIDE; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int RestartIgnoringLastError( 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) OVERRIDE; 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int RestartWithCertificate( 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) X509Certificate* client_cert, 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) OVERRIDE; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int RestartWithAuth(const AuthCredentials& credentials, 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) OVERRIDE; 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool IsReadyToRestartForAuth() OVERRIDE; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int Read(IOBuffer* buf, 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int buf_len, 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) OVERRIDE; 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void StopCaching() OVERRIDE; 122eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch virtual bool GetFullRequestHeaders( 123eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch HttpRequestHeaders* headers) const OVERRIDE; 1245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual int64 GetTotalReceivedBytes() const OVERRIDE; 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void DoneReading() OVERRIDE; 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual const HttpResponseInfo* GetResponseInfo() const OVERRIDE; 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual LoadState GetLoadState() const OVERRIDE; 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual UploadProgress GetUploadProgress(void) const OVERRIDE; 1295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void SetQuicServerInfo(QuicServerInfo* quic_server_info) OVERRIDE; 1302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool GetLoadTimingInfo( 1312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) LoadTimingInfo* load_timing_info) const OVERRIDE; 1322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void SetPriority(RequestPriority priority) OVERRIDE; 133f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) virtual void SetWebSocketHandshakeStreamCreateHelper( 134f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) net::WebSocketHandshakeStreamBase::CreateHelper* create_helper) OVERRIDE; 1355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void SetBeforeNetworkStartCallback( 1365d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const BeforeNetworkStartCallback& callback) OVERRIDE; 1375d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual int ResumeNetworkStart() OVERRIDE; 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const size_t kNumValidationHeaders = 2; 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Helper struct to pair a header name with its value, for 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // headers used to validate cache entries. 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct ValidationHeaders { 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValidationHeaders() : initialized(false) {} 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string values[kNumValidationHeaders]; 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool initialized; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum State { 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_NONE, 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_GET_BACKEND, 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_GET_BACKEND_COMPLETE, 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_SEND_REQUEST, 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_SEND_REQUEST_COMPLETE, 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_SUCCESSFUL_SEND_REQUEST, 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_NETWORK_READ, 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_NETWORK_READ_COMPLETE, 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_INIT_ENTRY, 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_OPEN_ENTRY, 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_OPEN_ENTRY_COMPLETE, 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CREATE_ENTRY, 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CREATE_ENTRY_COMPLETE, 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_DOOM_ENTRY, 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_DOOM_ENTRY_COMPLETE, 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_ADD_TO_ENTRY, 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_ADD_TO_ENTRY_COMPLETE, 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_START_PARTIAL_CACHE_VALIDATION, 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_COMPLETE_PARTIAL_CACHE_VALIDATION, 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_UPDATE_CACHED_RESPONSE, 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_UPDATE_CACHED_RESPONSE_COMPLETE, 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_OVERWRITE_CACHED_RESPONSE, 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_TRUNCATE_CACHED_DATA, 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_TRUNCATE_CACHED_DATA_COMPLETE, 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_TRUNCATE_CACHED_METADATA, 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_TRUNCATE_CACHED_METADATA_COMPLETE, 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_PARTIAL_HEADERS_RECEIVED, 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_READ_RESPONSE, 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_READ_RESPONSE_COMPLETE, 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_WRITE_RESPONSE, 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_WRITE_TRUNCATED_RESPONSE, 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_WRITE_RESPONSE_COMPLETE, 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_READ_METADATA, 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_READ_METADATA_COMPLETE, 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_QUERY_DATA, 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_QUERY_DATA_COMPLETE, 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_READ_DATA, 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_READ_DATA_COMPLETE, 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_WRITE_DATA, 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STATE_CACHE_WRITE_DATA_COMPLETE 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Used for categorizing transactions for reporting in histograms. Patterns 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // cover relatively common use cases being measured and considered for 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // optimization. Many use cases that are more complex or uncommon are binned 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // as PATTERN_NOT_COVERED, and details are not reported. 1972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // NOTE: This enumeration is used in histograms, so please do not add entries 1982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // in the middle. 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum TransactionPattern { 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PATTERN_UNDEFINED, 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PATTERN_NOT_COVERED, 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PATTERN_ENTRY_NOT_CACHED, 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PATTERN_ENTRY_USED, 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PATTERN_ENTRY_VALIDATED, 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PATTERN_ENTRY_UPDATED, 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PATTERN_ENTRY_CANT_CONDITIONALIZE, 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PATTERN_MAX, 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is a helper function used to trigger a completion callback. It may 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // only be called if callback_ is non-null. 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DoCallback(int rv); 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This will trigger the completion callback if appropriate. 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int HandleResult(int rv); 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Runs the state transition loop. 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoLoop(int result); 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Each of these methods corresponds to a State value. If there is an 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // argument, the value corresponds to the return of the previous state or 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // corresponding callback. 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoGetBackend(); 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoGetBackendComplete(int result); 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoSendRequest(); 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoSendRequestComplete(int result); 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoSuccessfulSendRequest(); 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoNetworkRead(); 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoNetworkReadComplete(int result); 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoInitEntry(); 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoOpenEntry(); 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoOpenEntryComplete(int result); 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCreateEntry(); 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCreateEntryComplete(int result); 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoDoomEntry(); 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoDoomEntryComplete(int result); 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoAddToEntry(); 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoAddToEntryComplete(int result); 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoStartPartialCacheValidation(); 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCompletePartialCacheValidation(int result); 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoUpdateCachedResponse(); 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoUpdateCachedResponseComplete(int result); 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoOverwriteCachedResponse(); 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoTruncateCachedData(); 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoTruncateCachedDataComplete(int result); 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoTruncateCachedMetadata(); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoTruncateCachedMetadataComplete(int result); 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoPartialHeadersReceived(); 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheReadResponse(); 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheReadResponseComplete(int result); 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheWriteResponse(); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheWriteTruncatedResponse(); 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheWriteResponseComplete(int result); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheReadMetadata(); 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheReadMetadataComplete(int result); 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheQueryData(); 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheQueryDataComplete(int result); 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheReadData(); 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheReadDataComplete(int result); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheWriteData(int num_bytes); 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoCacheWriteDataComplete(int result); 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sets request_ and fields derived from it. 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetRequest(const BoundNetLog& net_log, const HttpRequestInfo* request); 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the request should be handled exclusively by the network 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // layer (skipping the cache entirely). 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ShouldPassThrough(); 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to begin reading from the cache. Returns network error code. 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int BeginCacheRead(); 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to begin validating the cache entry. Returns network error code. 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int BeginCacheValidation(); 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to begin validating an entry that stores partial content. Returns 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // a network error code. 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int BeginPartialCacheValidation(); 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Validates the entry headers against the requested range and continues with 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the validation of the rest of the entry. Returns a network error code. 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ValidateEntryHeadersAndContinue(); 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to start requests which were given an "if-modified-since" or 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // "if-none-match" validation header by the caller (NOT when the request was 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // conditionalized internally in response to LOAD_VALIDATE_CACHE). 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns a network error code. 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int BeginExternallyConditionalizedRequest(); 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to restart a network transaction after an error. Returns network 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // error code. 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int RestartNetworkRequest(); 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to restart a network transaction with a client certificate. 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns network error code. 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int RestartNetworkRequestWithCertificate(X509Certificate* client_cert); 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to restart a network transaction with authentication credentials. 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns network error code. 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int RestartNetworkRequestWithAuth(const AuthCredentials& credentials); 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to determine if we need to validate the cache entry before using it. 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool RequiresValidation(); 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to make the request conditional (to ask the server if the cached 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // copy is valid). Returns true if able to make the request conditional. 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ConditionalizeRequest(); 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Makes sure that a 206 response is expected. Returns true on success. 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On success, handling_206_ will be set to true if we are processing a 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // partial entry. 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ValidatePartialResponse(); 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Handles a response validation error by bypassing the cache. 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void IgnoreRangeRequest(); 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Changes the response code of a range request to be 416 (Requested range not 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // satisfiable). 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void FailRangeRequest(); 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Setups the transaction for reading from the cache entry. 3222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int SetupEntryForRead(); 3232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Reads data from the network. 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ReadFromNetwork(IOBuffer* data, int data_len); 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Reads data from the cache entry. 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ReadFromEntry(IOBuffer* data, int data_len); 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to write data to the cache entry. If the write fails, then the 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // cache entry is destroyed. Future calls to this function will just do 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // nothing without side-effect. Returns a network error code. 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int WriteToEntry(int index, int offset, IOBuffer* data, int data_len, 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback); 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to write response_ to the cache entry. |truncated| indicates if the 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // entry should be marked as incomplete. 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int WriteResponseInfoToEntry(bool truncated); 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to append response data to the cache entry. Returns a network error 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // code. 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int AppendResponseDataToEntry(IOBuffer* data, int data_len, 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback); 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called when we are done writing to the cache entry. 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DoneWritingToEntry(bool success); 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns an error to signal the caller that the current read failed. The 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // current operation |result| is also logged. If |restart| is true, the 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // transaction should be restarted. 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int OnCacheReadError(int result, bool restart); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Deletes the current partial cache entry (sparse), and optionally removes 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the control object (partial_). 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DoomPartialEntry(bool delete_object); 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Performs the needed work after receiving data from the network, when 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // working with range requests. 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoPartialNetworkReadCompleted(int result); 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Performs the needed work after receiving data from the cache, when 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // working with range requests. 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoPartialCacheReadCompleted(int result); 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Restarts this transaction after deleting the cached data. It is meant to 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // be used when the current request cannot be fulfilled due to conflicts 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // between the byte range request and the cached entry. 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int DoRestartPartialRequest(); 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Resets |network_trans_|, which must be non-NULL. Also updates 37158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // |old_network_trans_load_timing_|, which must be NULL when this is called. 37258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) void ResetNetworkTransaction(); 37358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if we should bother attempting to resume this request if it 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is aborted while in progress. If |has_data| is true, the size of the stored 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // data is considered for the result. 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool CanResume(bool has_data); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void UpdateTransactionPattern(TransactionPattern new_transaction_pattern); 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void RecordHistograms(); 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Called to signal completion of asynchronous IO. 3835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) void OnIOComplete(int result); 3845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) State next_state_; 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const HttpRequestInfo* request_; 3872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RequestPriority priority_; 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BoundNetLog net_log_; 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<HttpRequestInfo> custom_request_; 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HttpRequestHeaders request_headers_copy_; 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If extra_headers specified a "if-modified-since" or "if-none-match", 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |external_validation_| contains the value of those headers. 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ValidationHeaders external_validation_; 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::WeakPtr<HttpCache> cache_; 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HttpCache::ActiveEntry* entry_; 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HttpCache::ActiveEntry* new_entry_; 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<HttpTransaction> network_trans_; 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CompletionCallback callback_; // Consumer's callback. 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HttpResponseInfo response_; 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HttpResponseInfo auth_response_; 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const HttpResponseInfo* new_response_; 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string cache_key_; 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mode mode_; 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) State target_state_; 4055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool reading_; // We are already reading. Never reverts to false once set. 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool invalid_range_; // We may bypass the cache for this request. 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool truncated_; // We don't have all the response data. 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_sparse_; // The data is stored in sparse byte ranges. 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool range_requested_; // The user requested a byte range. 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handling_206_; // We must deal with this 206 response. 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool cache_pending_; // We are waiting for the HttpCache. 4125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool done_reading_; // All available data was read. 4132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool vary_mismatch_; // The request doesn't match the stored vary data. 4142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool couldnt_conditionalize_request_; 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<IOBuffer> read_buf_; 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int io_buf_len_; 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int read_offset_; 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int effective_load_flags_; 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int write_len_; 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<PartialData> partial_; // We are dealing with range requests. 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UploadProgress final_upload_progress_; 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::WeakPtrFactory<Transaction> weak_factory_; 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CompletionCallback io_callback_; 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Members used to track data for histograms. 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TransactionPattern transaction_pattern_; 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks entry_lock_waiting_since_; 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks first_cache_access_since_; 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks send_request_since_; 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int64 total_received_bytes_; 43290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 43390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Load timing information for the last network request, if any. Set in the 43490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // 304 and 206 response cases, as the network transaction may be destroyed 43590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // before the caller requests load timing information. 43690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) scoped_ptr<LoadTimingInfo> old_network_trans_load_timing_; 437f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 438a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // The helper object to use to create WebSocketHandshakeStreamBase 439a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // objects. Only relevant when establishing a WebSocket connection. 440a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // This is passed to the underlying network transaction. It is stored here in 441a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // case the transaction does not exist yet. 442a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) WebSocketHandshakeStreamBase::CreateHelper* 443a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) websocket_handshake_stream_base_create_helper_; 444a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 4455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) BeforeNetworkStartCallback before_network_start_callback_; 4465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 447f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(Transaction); 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace net 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // NET_HTTP_HTTP_CACHE_TRANSACTION_H_ 453