1ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Use of this source code is governed by a BSD-style license that can be 3c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// found in the LICENSE file. 4c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 5c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include "net/http/http_network_layer.h" 6c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 7c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include "base/logging.h" 83f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen#include "base/string_number_conversions.h" 93345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#include "base/string_split.h" 10c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include "base/string_util.h" 11c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include "net/http/http_network_session.h" 12c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include "net/http/http_network_transaction.h" 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "net/spdy/spdy_framer.h" 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "net/spdy/spdy_session.h" 15dc0f95d653279beabeb9817299e2902918ba123eKristian Monsen#include "net/spdy/spdy_session_pool.h" 16c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 17c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottnamespace net { 18c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 19c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott//----------------------------------------------------------------------------- 20c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick ScottHttpNetworkLayer::HttpNetworkLayer(HttpNetworkSession* session) 2172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen : session_(session), 22c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott suspended_(false) { 23c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott DCHECK(session_.get()); 24c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 25c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 26c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick ScottHttpNetworkLayer::~HttpNetworkLayer() { 27c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 28c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 2972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen//----------------------------------------------------------------------------- 30c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 3172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen// static 3272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian MonsenHttpTransactionFactory* HttpNetworkLayer::CreateFactory( 3372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen HttpNetworkSession* session) { 3472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen DCHECK(session); 35c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 3672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen return new HttpNetworkLayer(session); 37c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 38c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 39c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// static 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid HttpNetworkLayer::EnableSpdy(const std::string& mode) { 41731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick static const char kOff[] = "off"; 423345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick static const char kSSL[] = "ssl"; 43c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott static const char kDisableSSL[] = "no-ssl"; 442c4085b2006233b5e3a3fe507d62642377b5dc2eSelim Gurun static const char kDisablePing[] = "no-ping"; 453f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen static const char kExclude[] = "exclude"; // Hosts to exclude 46c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott static const char kDisableCompression[] = "no-compress"; 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch static const char kDisableAltProtocols[] = "no-alt-protocols"; 483345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick static const char kEnableVersionOne[] = "v1"; 493345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick static const char kForceAltProtocols[] = "force-alt-protocols"; 50dc0f95d653279beabeb9817299e2902918ba123eKristian Monsen static const char kSingleDomain[] = "single-domain"; 513345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 523345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // If flow-control is enabled, received WINDOW_UPDATE and SETTINGS 533345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // messages are processed and outstanding window size is actually obeyed 543345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // when sending data frames, and WINDOW_UPDATE messages are generated 553345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // when data is consumed. 563345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick static const char kEnableFlowControl[] = "flow-control"; 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 58c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We want an A/B experiment between SPDY enabled and SPDY disabled, 59c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // but only for pages where SPDY *could have been* negotiated. To do 60c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this, we use NPN, but prevent it from negotiating SPDY. If the 61c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // server negotiates HTTP, rather than SPDY, today that will only happen 62c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // on servers that installed NPN (and could have done SPDY). But this is 63c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // a bit of a hack, as this correlation between NPN and SPDY is not 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // really guaranteed. 65c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott static const char kEnableNPN[] = "npn"; 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch static const char kEnableNpnHttpOnly[] = "npn-http"; 67c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Except for the first element, the order is irrelevant. First element 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // specifies the fallback in case nothing matches 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // (SSLClientSocket::kNextProtoNoOverlap). Otherwise, the SSL library 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // will choose the first overlapping protocol in the server's list, since 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // it presumedly has a better understanding of which protocol we should 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // use, therefore the rest of the ordering here is not important. 743345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick static const char kNpnProtosFull[] = "\x08http/1.1\x06spdy/2"; 753345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // This is a temporary hack to pretend we support version 1. 763345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick static const char kNpnProtosFullV1[] = "\x08http/1.1\x06spdy/1"; 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // No spdy specified. 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch static const char kNpnProtosHttpOnly[] = "\x08http/1.1\x07http1.1"; 79c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<std::string> spdy_options; 81731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick base::SplitString(mode, ',', &spdy_options); 82c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool use_alt_protocols = true; 84c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (std::vector<std::string>::iterator it = spdy_options.begin(); 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch it != spdy_options.end(); ++it) { 873f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen const std::string& element = *it; 883f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen std::vector<std::string> name_value; 893f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen base::SplitString(element, '=', &name_value); 903f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen const std::string& option = name_value[0]; 913f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen const std::string value = name_value.size() > 1 ? name_value[1] : ""; 923f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen 93731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick if (option == kOff) { 94731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick HttpStreamFactory::set_spdy_enabled(false); 95731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick } else if (option == kDisableSSL) { 96c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch SpdySession::SetSSLMode(false); // Disable SSL 973345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_force_spdy_over_ssl(false); 983345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_force_spdy_always(true); 993345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick } else if (option == kSSL) { 1003345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_force_spdy_over_ssl(true); 1013345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_force_spdy_always(true); 1022c4085b2006233b5e3a3fe507d62642377b5dc2eSelim Gurun } else if (option == kDisablePing) { 1032c4085b2006233b5e3a3fe507d62642377b5dc2eSelim Gurun SpdySession::set_enable_ping_based_connection_checking(false); 1043f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen } else if (option == kExclude) { 1053f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen HttpStreamFactory::add_forced_spdy_exclusion(value); 106c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott } else if (option == kDisableCompression) { 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch spdy::SpdyFramer::set_enable_compression_default(false); 108c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott } else if (option == kEnableNPN) { 1093345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_use_alternate_protocols(use_alt_protocols); 1103345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_next_protos(kNpnProtosFull); 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else if (option == kEnableNpnHttpOnly) { 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Avoid alternate protocol in this case. Otherwise, browser will try SSL 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // and then fallback to http. This introduces extra load. 1143345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_use_alternate_protocols(false); 1153345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_next_protos(kNpnProtosHttpOnly); 1163345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick } else if (option == kEnableVersionOne) { 1173345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick spdy::SpdyFramer::set_protocol_version(1); 1183345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_next_protos(kNpnProtosFullV1); 119c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else if (option == kDisableAltProtocols) { 120c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch use_alt_protocols = false; 1213345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpStreamFactory::set_use_alternate_protocols(false); 1223345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick } else if (option == kEnableFlowControl) { 1233345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick SpdySession::set_flow_control(true); 1243345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick } else if (option == kForceAltProtocols) { 1253345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpAlternateProtocols::PortProtocolPair pair; 1263345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick pair.port = 443; 1273345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick pair.protocol = HttpAlternateProtocols::NPN_SPDY_2; 1283345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick HttpAlternateProtocols::ForceAlternateProtocol(pair); 129dc0f95d653279beabeb9817299e2902918ba123eKristian Monsen } else if (option == kSingleDomain) { 130dc0f95d653279beabeb9817299e2902918ba123eKristian Monsen SpdySessionPool::ForceSingleDomain(); 131dc0f95d653279beabeb9817299e2902918ba123eKristian Monsen LOG(ERROR) << "FORCING SINGLE DOMAIN"; 132c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else if (option.empty() && it == spdy_options.begin()) { 133c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott continue; 134c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott } else { 135c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch LOG(DFATAL) << "Unrecognized spdy option: " << option; 136c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott } 137c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott } 138c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 13972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 14072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen//----------------------------------------------------------------------------- 14172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 14272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsenint HttpNetworkLayer::CreateTransaction(scoped_ptr<HttpTransaction>* trans) { 14372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (suspended_) 14472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen return ERR_NETWORK_IO_SUSPENDED; 14572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 14672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen trans->reset(new HttpNetworkTransaction(GetSession())); 14772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen return OK; 14872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen} 14972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 15072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian MonsenHttpCache* HttpNetworkLayer::GetCache() { 15172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen return NULL; 15272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen} 15372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 15472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian MonsenHttpNetworkSession* HttpNetworkLayer::GetSession() { 15572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen return session_; 15672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen} 15772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 15872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsenvoid HttpNetworkLayer::Suspend(bool suspend) { 15972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen suspended_ = suspend; 16072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 16172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (suspend && session_) 162dc0f95d653279beabeb9817299e2902918ba123eKristian Monsen session_->CloseIdleConnections(); 16372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen} 16472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 165c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} // namespace net 166