// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/io_thread.h"
#include <utility>
#include <vector>
#include "base/base64.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/debug/leak_tracker.h"
#include "base/environment.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/metrics/field_trial.h"
#include "base/profiler/scoped_tracker.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/sequenced_worker_pool.h"
#include "base/threading/thread.h"
#include "base/threading/worker_pool.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/data_usage/tab_id_annotator.h"
#include "chrome/browser/net/async_dns_field_trial.h"
#include "chrome/browser/net/chrome_network_delegate.h"
#include "chrome/browser/net/connect_interceptor.h"
#include "chrome/browser/net/dns_probe_service.h"
#include "chrome/browser/net/proxy_service_factory.h"
#include "chrome/common/channel_info.h"
#include "chrome/common/chrome_content_client.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_prefs.h"
#include "components/data_reduction_proxy/core/common/data_reduction_proxy_params.h"
#include "components/data_usage/core/data_use_aggregator.h"
#include "components/data_usage/core/data_use_amortizer.h"
#include "components/data_usage/core/data_use_annotator.h"
#include "components/net_log/chrome_net_log.h"
#include "components/policy/core/common/policy_service.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/proxy_config/pref_proxy_config_tracker.h"
#include "components/variations/variations_associated_data.h"
#include "components/version_info/version_info.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/cookie_store_factory.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/user_agent.h"
#include "net/base/external_estimate_provider.h"
#include "net/base/host_mapping_rules.h"
#include "net/base/net_util.h"
#include "net/base/network_quality_estimator.h"
#include "net/base/sdch_manager.h"
#include "net/cert/cert_verifier.h"
#include "net/cert/cert_verify_proc.h"
#include "net/cert/ct_known_logs.h"
#include "net/cert/ct_known_logs_static.h"
#include "net/cert/ct_log_verifier.h"
#include "net/cert/ct_policy_enforcer.h"
#include "net/cert/ct_verifier.h"
#include "net/cert/multi_log_ct_verifier.h"
#include "net/cert/multi_threaded_cert_verifier.h"
#include "net/cookies/cookie_store.h"
#include "net/dns/host_cache.h"
#include "net/dns/host_resolver.h"
#include "net/dns/mapped_host_resolver.h"
#include "net/ftp/ftp_network_layer.h"
#include "net/http/http_auth_filter.h"
#include "net/http/http_auth_handler_factory.h"
#include "net/http/http_auth_preferences.h"
#include "net/http/http_network_layer.h"
#include "net/http/http_network_session.h"
#include "net/http/http_server_properties_impl.h"
#include "net/proxy/proxy_config_service.h"
#include "net/proxy/proxy_script_fetcher_impl.h"
#include "net/proxy/proxy_service.h"
#include "net/quic/crypto/crypto_protocol.h"
#include "net/quic/quic_protocol.h"
#include "net/quic/quic_utils.h"
#include "net/socket/ssl_client_socket.h"
#include "net/socket/tcp_client_socket.h"
#include "net/spdy/spdy_session.h"
#include "net/ssl/channel_id_service.h"
#include "net/ssl/default_channel_id_store.h"
#include "net/url_request/data_protocol_handler.h"
#include "net/url_request/file_protocol_handler.h"
#include "net/url_request/ftp_protocol_handler.h"
#include "net/url_request/static_http_user_agent_settings.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request_backoff_manager.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_builder.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_job_factory_impl.h"
#include "url/url_constants.h"
#if defined(ENABLE_CONFIGURATION_POLICY)
#include "policy/policy_constants.h"
#endif
#if defined(ENABLE_EXTENSIONS)
#include "chrome/browser/extensions/event_router_forwarder.h"
#endif
#if defined(USE_NSS_CERTS) || defined(OS_IOS)
#include "net/cert_net/nss_ocsp.h"
#endif
#if BUILDFLAG(ANDROID_JAVA_UI)
#include "base/android/build_info.h"
#include "chrome/browser/android/data_usage/external_data_use_observer.h"
#include "chrome/browser/android/net/external_estimate_provider_android.h"
#include "components/data_usage/android/traffic_stats_amortizer.h"
#endif
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/net/cert_verify_proc_chromeos.h"
#include "chromeos/network/host_resolver_impl_chromeos.h"
#endif
using content::BrowserThread;
class SafeBrowsingURLRequestContext;
// The IOThread object must outlive any tasks posted to the IO thread before the
// Quit task, so base::Bind() calls are not refcounted.
namespace {
const char kTCPFastOpenFieldTrialName[] = "TCPFastOpen";
const char kTCPFastOpenHttpsEnabledGroupName[] = "HttpsEnabled";
const char kQuicFieldTrialName[] = "QUIC";
const char kQuicFieldTrialEnabledGroupName[] = "Enabled";
const char kQuicFieldTrialHttpsEnabledGroupName[] = "HttpsEnabled";
// The SPDY trial composes two different trial plus control groups:
// * A "holdback" group with SPDY disabled, and corresponding control
// (SPDY/3.1). The primary purpose of the holdback group is to encourage site
// operators to do feature detection rather than UA-sniffing. As such, this
// trial runs continuously.
// * A SPDY/4 experiment, for SPDY/4 (aka HTTP/2) vs SPDY/3.1 comparisons and
// eventual SPDY/4 deployment.
const char kSpdyFieldTrialName[] = "SPDY";
const char kSpdyFieldTrialHoldbackGroupNamePrefix[] = "SpdyDisabled";
const char kSpdyFieldTrialSpdy31GroupNamePrefix[] = "Spdy31Enabled";
const char kSpdyFieldTrialSpdy4GroupNamePrefix[] = "Spdy4Enabled";
const char kSpdyFieldTrialParametrizedPrefix[] = "Parametrized";
// The AltSvc trial controls whether Alt-Svc headers are parsed.
// Disabled:
// Alt-Svc headers are not parsed.
// Alternate-Protocol headers are parsed.
// Enabled:
// Alt-Svc headers are parsed, but only same-host entries are used by
// default. (Use "enable_alternative_service_with_different_host" QUIC
// parameter to enable entries with different hosts.)
// Alternate-Protocol headers are ignored for responses that have an Alt-Svc
// header.
const char kAltSvcFieldTrialName[] = "ParseAltSvc";
const char kAltSvcFieldTrialDisabledPrefix[] = "AltSvcDisabled";
const char kAltSvcFieldTrialEnabledPrefix[] = "AltSvcEnabled";
// Field trial for network quality estimator. Seeds RTT and downstream
// throughput observations with values that correspond to the connection type
// determined by the operating system.
const char kNetworkQualityEstimatorFieldTrialName[] = "NetworkQualityEstimator";
// Field trial for NPN.
const char kNpnTrialName[] = "NPN";
const char kNpnTrialEnabledGroupNamePrefix[] = "Enable";
const char kNpnTrialDisabledGroupNamePrefix[] = "Disable";
#if defined(OS_MACOSX) && !defined(OS_IOS)
void ObserveKeychainEvents() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
net::CertDatabase::GetInstance()->SetMessageLoopForKeychainEvents();
}
#endif
// Gets file path into ssl_keylog_file from command line argument or
// environment variable. Command line argument has priority when
// both specified.
base::FilePath GetSSLKeyLogFile(const base::CommandLine& command_line) {
if (command_line.HasSwitch(switches::kSSLKeyLogFile)) {
base::FilePath path =
command_line.GetSwitchValuePath(switches::kSSLKeyLogFile);
if (!path.empty())
return path;
LOG(WARNING) << "ssl-key-log-file argument missing";
}
scoped_ptr<base::Environment> env(base::Environment::Create());
std::string path_str;
env->GetVar("SSLKEYLOGFILE", &path_str);
#if defined(OS_WIN)
// base::Environment returns environment variables in UTF-8 on Windows.
return base::FilePath(base::UTF8ToUTF16(path_str));
#else
return base::FilePath(path_str);
#endif
}
// Used for the "system" URLRequestContext.
class SystemURLRequestContext : public net::URLRequestContext {
public:
SystemURLRequestContext() {
#if defined(USE_NSS_CERTS) || defined(OS_IOS)
net::SetURLRequestContextForNSSHttpIO(this);
#endif
}
private:
~SystemURLRequestContext() override {
AssertNoURLRequests();
#if defined(USE_NSS_CERTS) || defined(OS_IOS)
net::SetURLRequestContextForNSSHttpIO(NULL);
#endif
}
};
scoped_ptr<net::HostResolver> CreateGlobalHostResolver(net::NetLog* net_log) {
TRACE_EVENT0("startup", "IOThread::CreateGlobalHostResolver");
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
net::HostResolver::Options options;
// Use the retry attempts override from the command-line, if any.
if (command_line.HasSwitch(switches::kHostResolverRetryAttempts)) {
std::string s =
command_line.GetSwitchValueASCII(switches::kHostResolverRetryAttempts);
// Parse the switch (it should be a non-negative integer).
int n;
if (base::StringToInt(s, &n) && n >= 0) {
options.max_retry_attempts = static_cast<size_t>(n);
} else {
LOG(ERROR) << "Invalid switch for host resolver retry attempts: " << s;
}
}
scoped_ptr<net::HostResolver> global_host_resolver;
#if defined OS_CHROMEOS
global_host_resolver =
chromeos::HostResolverImplChromeOS::CreateSystemResolver(options,
net_log);
#else
global_host_resolver =
net::HostResolver::CreateSystemResolver(options, net_log);
#endif
// If hostname remappings were specified on the command-line, layer these
// rules on top of the real host resolver. This allows forwarding all requests
// through a designated test server.
if (!command_line.HasSwitch(switches::kHostResolverRules))
return global_host_resolver;
scoped_ptr<net::MappedHostResolver> remapped_resolver(
new net::MappedHostResolver(std::move(global_host_resolver)));
remapped_resolver->SetRulesFromString(
command_line.GetSwitchValueASCII(switches::kHostResolverRules));
return std::move(remapped_resolver);
}
int GetSwitchValueAsInt(const base::CommandLine& command_line,
const std::string& switch_name) {
int value;
if (!base::StringToInt(command_line.GetSwitchValueASCII(switch_name),
&value)) {
return 0;
}
return value;
}
// Returns the value associated with |key| in |params| or "" if the
// key is not present in the map.
const std::string& GetVariationParam(
const std::map<std::string, std::string>& params,
const std::string& key) {
std::map<std::string, std::string>::const_iterator it = params.find(key);
if (it == params.end())
return base::EmptyString();
return it->second;
}
// Parse kUseSpdy command line flag options, which may contain the following:
//
// "off" : Disables SPDY support entirely.
// "no-ping" : Disables SPDY ping connection testing.
// "exclude=<host>" : Disables SPDY support for the host <host>.
// "no-compress" : Disables SPDY header compression.
// "init-max-streams=<limit>" : Specifies the maximum number of concurrent
// streams for a SPDY session, unless the
// specifies a different value via SETTINGS.
void ConfigureSpdyGlobalsFromUseSpdyArgument(const std::string& mode,
IOThread::Globals* globals) {
static const char kOff[] = "off";
static const char kDisablePing[] = "no-ping";
static const char kExclude[] = "exclude"; // Hosts to exclude
static const char kDisableCompression[] = "no-compress";
static const char kInitialMaxConcurrentStreams[] = "init-max-streams";
for (const base::StringPiece& element : base::SplitStringPiece(
mode, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
std::vector<base::StringPiece> name_value = base::SplitStringPiece(
element, "=", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
const base::StringPiece option =
name_value.size() > 0 ? name_value[0] : base::StringPiece();
const base::StringPiece value =
name_value.size() > 1 ? name_value[1] : base::StringPiece();
if (option == kOff) {
net::HttpStreamFactory::set_spdy_enabled(false);
continue;
}
if (option == kDisablePing) {
globals->enable_spdy_ping_based_connection_checking.set(false);
continue;
}
if (option == kExclude) {
globals->forced_spdy_exclusions.insert(
net::HostPortPair::FromURL(GURL(value.as_string())));
continue;
}
if (option == kDisableCompression) {
globals->enable_spdy_compression.set(false);
continue;
}
if (option == kInitialMaxConcurrentStreams) {
int streams;
if (base::StringToInt(value, &streams)) {
globals->initial_max_spdy_concurrent_streams.set(streams);
continue;
}
}
LOG(DFATAL) << "Unrecognized spdy option: " << option.as_string();
}
}
} // namespace
class IOThread::LoggingNetworkChangeObserver
: public net::NetworkChangeNotifier::IPAddressObserver,
public net::NetworkChangeNotifier::ConnectionTypeObserver,
public net::NetworkChangeNotifier::NetworkChangeObserver {
public:
// |net_log| must remain valid throughout our lifetime.
explicit LoggingNetworkChangeObserver(net::NetLog* net_log)
: net_log_(net_log) {
net::NetworkChangeNotifier::AddIPAddressObserver(this);
net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
net::NetworkChangeNotifier::AddNetworkChangeObserver(this);
}
~LoggingNetworkChangeObserver() override {
net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
net::NetworkChangeNotifier::RemoveNetworkChangeObserver(this);
}
// NetworkChangeNotifier::IPAddressObserver implementation.
void OnIPAddressChanged() override {
VLOG(1) << "Observed a change to the network IP addresses";
net_log_->AddGlobalEntry(net::NetLog::TYPE_NETWORK_IP_ADDRESSES_CHANGED);
}
// NetworkChangeNotifier::ConnectionTypeObserver implementation.
void OnConnectionTypeChanged(
net::NetworkChangeNotifier::ConnectionType type) override {
std::string type_as_string =
net::NetworkChangeNotifier::ConnectionTypeToString(type);
VLOG(1) << "Observed a change to network connectivity state "
<< type_as_string;
net_log_->AddGlobalEntry(
net::NetLog::TYPE_NETWORK_CONNECTIVITY_CHANGED,
net::NetLog::StringCallback("new_connection_type", &type_as_string));
}
// NetworkChangeNotifier::NetworkChangeObserver implementation.
void OnNetworkChanged(
net::NetworkChangeNotifier::ConnectionType type) override {
std::string type_as_string =
net::NetworkChangeNotifier::ConnectionTypeToString(type);
VLOG(1) << "Observed a network change to state " << type_as_string;
net_log_->AddGlobalEntry(
net::NetLog::TYPE_NETWORK_CHANGED,
net::NetLog::StringCallback("new_connection_type", &type_as_string));
}
private:
net::NetLog* net_log_;
DISALLOW_COPY_AND_ASSIGN(LoggingNetworkChangeObserver);
};
class SystemURLRequestContextGetter : public net::URLRequestContextGetter {
public:
explicit SystemURLRequestContextGetter(IOThread* io_thread);
// Implementation for net::UrlRequestContextGetter.
net::URLRequestContext* GetURLRequestContext() override;
scoped_refptr<base::SingleThreadTaskRunner> GetNetworkTaskRunner()
const override;
protected:
~SystemURLRequestContextGetter() override;
private:
IOThread* const io_thread_; // Weak pointer, owned by BrowserProcess.
scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
base::debug::LeakTracker<SystemURLRequestContextGetter> leak_tracker_;
};
SystemURLRequestContextGetter::SystemURLRequestContextGetter(
IOThread* io_thread)
: io_thread_(io_thread),
network_task_runner_(
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)) {
}
SystemURLRequestContextGetter::~SystemURLRequestContextGetter() {}
net::URLRequestContext* SystemURLRequestContextGetter::GetURLRequestContext() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(io_thread_->globals()->system_request_context.get());
return io_thread_->globals()->system_request_context.get();
}
scoped_refptr<base::SingleThreadTaskRunner>
SystemURLRequestContextGetter::GetNetworkTaskRunner() const {
return network_task_runner_;
}
IOThread::Globals::
SystemRequestContextLeakChecker::SystemRequestContextLeakChecker(
Globals* globals)
: globals_(globals) {
DCHECK(globals_);
}
IOThread::Globals::
SystemRequestContextLeakChecker::~SystemRequestContextLeakChecker() {
if (globals_->system_request_context.get())
globals_->system_request_context->AssertNoURLRequests();
}
IOThread::Globals::Globals()
: system_request_context_leak_checker(this),
ignore_certificate_errors(false),
testing_fixed_http_port(0),
testing_fixed_https_port(0),
enable_user_alternate_protocol_ports(false),
enable_token_binding(false) {}
IOThread::Globals::~Globals() {}
// |local_state| is passed in explicitly in order to (1) reduce implicit
// dependencies and (2) make IOThread more flexible for testing.
IOThread::IOThread(
PrefService* local_state,
policy::PolicyService* policy_service,
net_log::ChromeNetLog* net_log,
extensions::EventRouterForwarder* extension_event_router_forwarder)
: net_log_(net_log),
#if defined(ENABLE_EXTENSIONS)
extension_event_router_forwarder_(extension_event_router_forwarder),
#endif
globals_(NULL),
is_spdy_disabled_by_policy_(false),
is_quic_allowed_by_policy_(true),
creation_time_(base::TimeTicks::Now()),
weak_factory_(this) {
scoped_refptr<base::SingleThreadTaskRunner> io_thread_proxy =
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
auth_schemes_ = local_state->GetString(prefs::kAuthSchemes);
negotiate_disable_cname_lookup_.Init(
prefs::kDisableAuthNegotiateCnameLookup, local_state,
base::Bind(&IOThread::UpdateNegotiateDisableCnameLookup,
base::Unretained(this)));
negotiate_disable_cname_lookup_.MoveToThread(io_thread_proxy);
negotiate_enable_port_.Init(
prefs::kEnableAuthNegotiatePort, local_state,
base::Bind(&IOThread::UpdateNegotiateEnablePort, base::Unretained(this)));
negotiate_enable_port_.MoveToThread(io_thread_proxy);
auth_server_whitelist_.Init(
prefs::kAuthServerWhitelist, local_state,
base::Bind(&IOThread::UpdateServerWhitelist, base::Unretained(this)));
auth_server_whitelist_.MoveToThread(io_thread_proxy);
auth_delegate_whitelist_.Init(
prefs::kAuthNegotiateDelegateWhitelist, local_state,
base::Bind(&IOThread::UpdateDelegateWhitelist, base::Unretained(this)));
auth_delegate_whitelist_.MoveToThread(io_thread_proxy);
#if defined(OS_ANDROID)
auth_android_negotiate_account_type_.Init(
prefs::kAuthAndroidNegotiateAccountType, local_state,
base::Bind(&IOThread::UpdateAndroidAuthNegotiateAccountType,
base::Unretained(this)));
auth_android_negotiate_account_type_.MoveToThread(io_thread_proxy);
#endif
#if defined(OS_POSIX) && !defined(OS_ANDROID)
gssapi_library_name_ = local_state->GetString(prefs::kGSSAPILibraryName);
#endif
pref_proxy_config_tracker_.reset(
ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
local_state));
ChromeNetworkDelegate::InitializePrefsOnUIThread(
&system_enable_referrers_,
NULL,
NULL,
NULL,
local_state);
ssl_config_service_manager_.reset(
ssl_config::SSLConfigServiceManager::CreateDefaultManager(
local_state,
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
base::Value* dns_client_enabled_default = new base::FundamentalValue(
chrome_browser_net::ConfigureAsyncDnsFieldTrial());
local_state->SetDefaultPrefValue(prefs::kBuiltInDnsClientEnabled,
dns_client_enabled_default);
chrome_browser_net::LogAsyncDnsPrefSource(
local_state->FindPreference(prefs::kBuiltInDnsClientEnabled));
dns_client_enabled_.Init(prefs::kBuiltInDnsClientEnabled,
local_state,
base::Bind(&IOThread::UpdateDnsClientEnabled,
base::Unretained(this)));
dns_client_enabled_.MoveToThread(io_thread_proxy);
quick_check_enabled_.Init(prefs::kQuickCheckEnabled,
local_state);
quick_check_enabled_.MoveToThread(io_thread_proxy);
#if defined(ENABLE_CONFIGURATION_POLICY)
is_spdy_disabled_by_policy_ = policy_service->GetPolicies(
policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME, std::string())).Get(
policy::key::kDisableSpdy) != NULL;
const base::Value* value = policy_service->GetPolicies(
policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME,
std::string())).GetValue(policy::key::kQuicAllowed);
if (value)
value->GetAsBoolean(&is_quic_allowed_by_policy_);
#endif // ENABLE_CONFIGURATION_POLICY
BrowserThread::SetDelegate(BrowserThread::IO, this);
}
IOThread::~IOThread() {
// This isn't needed for production code, but in tests, IOThread may
// be multiply constructed.
BrowserThread::SetDelegate(BrowserThread::IO, NULL);
pref_proxy_config_tracker_->DetachFromPrefService();
DCHECK(!globals_);
}
IOThread::Globals* IOThread::globals() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
return globals_;
}
void IOThread::SetGlobalsForTesting(Globals* globals) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!globals || !globals_);
globals_ = globals;
}
net_log::ChromeNetLog* IOThread::net_log() {
return net_log_;
}
void IOThread::ChangedToOnTheRecord() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&IOThread::ChangedToOnTheRecordOnIOThread,
base::Unretained(this)));
}
net::URLRequestContextGetter* IOThread::system_url_request_context_getter() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!system_url_request_context_getter_.get()) {
InitSystemRequestContext();
}
return system_url_request_context_getter_.get();
}
void IOThread::Init() {
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile1(
FROM_HERE_WITH_EXPLICIT_FUNCTION("466432 IOThread::InitAsync::Start"));
TRACE_EVENT0("startup", "IOThread::InitAsync");
DCHECK_CURRENTLY_ON(BrowserThread::IO);
#if defined(USE_NSS_CERTS) || defined(OS_IOS)
net::SetMessageLoopForNSSHttpIO();
#endif
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile2(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CommandLineForCurrentProcess"));
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
// Export ssl keys if log file specified.
base::FilePath ssl_keylog_file = GetSSLKeyLogFile(command_line);
if (!ssl_keylog_file.empty()) {
net::SSLClientSocket::SetSSLKeyLogFile(
ssl_keylog_file,
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
}
DCHECK(!globals_);
globals_ = new Globals;
// Add an observer that will emit network change events to the ChromeNetLog.
// Assuming NetworkChangeNotifier dispatches in FIFO order, we should be
// logging the network change before other IO thread consumers respond to it.
network_change_observer_.reset(
new LoggingNetworkChangeObserver(net_log_));
// Setup the HistogramWatcher to run on the IO thread.
net::NetworkChangeNotifier::InitHistogramWatcher();
#if defined(ENABLE_EXTENSIONS)
globals_->extension_event_router_forwarder =
extension_event_router_forwarder_;
#endif
scoped_ptr<data_usage::DataUseAmortizer> data_use_amortizer;
#if BUILDFLAG(ANDROID_JAVA_UI)
data_use_amortizer.reset(new data_usage::android::TrafficStatsAmortizer());
#endif
globals_->data_use_aggregator.reset(new data_usage::DataUseAggregator(
scoped_ptr<data_usage::DataUseAnnotator>(
new chrome_browser_data_usage::TabIdAnnotator()),
std::move(data_use_amortizer)));
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile3(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::ChromeNetworkDelegate"));
scoped_ptr<ChromeNetworkDelegate> chrome_network_delegate(
new ChromeNetworkDelegate(extension_event_router_forwarder(),
&system_enable_referrers_));
// By default, data usage is considered off the record.
chrome_network_delegate->set_data_use_aggregator(
globals_->data_use_aggregator.get(),
true /* is_data_usage_off_the_record */);
#if BUILDFLAG(ANDROID_JAVA_UI)
globals_->external_data_use_observer.reset(
new chrome::android::ExternalDataUseObserver(
globals_->data_use_aggregator.get(),
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI)));
#endif
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile4(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateGlobalHostResolver"));
globals_->system_network_delegate = std::move(chrome_network_delegate);
globals_->host_resolver = CreateGlobalHostResolver(net_log_);
std::map<std::string, std::string> network_quality_estimator_params;
variations::GetVariationParams(kNetworkQualityEstimatorFieldTrialName,
&network_quality_estimator_params);
scoped_ptr<net::ExternalEstimateProvider> external_estimate_provider;
#if BUILDFLAG(ANDROID_JAVA_UI)
external_estimate_provider.reset(
new chrome::android::ExternalEstimateProviderAndroid());
#endif
// Pass ownership.
globals_->network_quality_estimator.reset(new net::NetworkQualityEstimator(
std::move(external_estimate_provider), network_quality_estimator_params));
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile5(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::UpdateDnsClientEnabled::Start"));
UpdateDnsClientEnabled();
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile6(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::UpdateDnsClientEnabled::End"));
#if defined(OS_CHROMEOS)
// Creates a CertVerifyProc that doesn't allow any profile-provided certs.
globals_->cert_verifier.reset(new net::MultiThreadedCertVerifier(
new chromeos::CertVerifyProcChromeOS()));
#else
globals_->cert_verifier.reset(new net::MultiThreadedCertVerifier(
net::CertVerifyProc::CreateDefault()));
#endif
globals_->transport_security_state.reset(new net::TransportSecurityState());
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile8(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateLogVerifiers::Start"));
std::vector<scoped_refptr<const net::CTLogVerifier>> ct_logs(
net::ct::CreateLogVerifiersForKnownLogs());
// Add logs from command line
if (command_line.HasSwitch(switches::kCertificateTransparencyLog)) {
std::string switch_value = command_line.GetSwitchValueASCII(
switches::kCertificateTransparencyLog);
for (const base::StringPiece& curr_log : base::SplitStringPiece(
switch_value, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
std::vector<std::string> log_metadata = base::SplitString(
curr_log, ":", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
CHECK_GE(log_metadata.size(), 3u)
<< "CT log metadata missing: Switch format is "
<< "'description:base64_key:url_without_schema'.";
std::string log_description(log_metadata[0]);
std::string log_url(std::string("https://") + log_metadata[2]);
std::string ct_public_key_data;
CHECK(base::Base64Decode(log_metadata[1], &ct_public_key_data))
<< "Unable to decode CT public key.";
scoped_refptr<const net::CTLogVerifier> external_log_verifier(
net::CTLogVerifier::Create(ct_public_key_data, log_description,
log_url));
CHECK(external_log_verifier) << "Unable to parse CT public key.";
VLOG(1) << "Adding log with description " << log_description;
ct_logs.push_back(external_log_verifier);
}
}
globals_->ct_logs.assign(ct_logs.begin(), ct_logs.end());
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile9(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateLogVerifiers::End"));
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile7(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateMultiLogVerifier"));
net::MultiLogCTVerifier* ct_verifier = new net::MultiLogCTVerifier();
globals_->cert_transparency_verifier.reset(ct_verifier);
// Add built-in logs
ct_verifier->AddLogs(globals_->ct_logs);
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile10(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CTPolicyEnforcer"));
net::CTPolicyEnforcer* policy_enforcer = new net::CTPolicyEnforcer;
globals_->ct_policy_enforcer.reset(policy_enforcer);
globals_->ssl_config_service = GetSSLConfigService();
CreateDefaultAuthHandlerFactory();
globals_->http_server_properties.reset(new net::HttpServerPropertiesImpl());
// For the ProxyScriptFetcher, we use a direct ProxyService.
globals_->proxy_script_fetcher_proxy_service =
net::ProxyService::CreateDirectWithNetLog(net_log_);
// In-memory cookie store.
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile11(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateCookieStore::Start"));
globals_->system_cookie_store =
content::CreateCookieStore(content::CookieStoreConfig());
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile12(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateCookieStore::End"));
// In-memory channel ID store.
globals_->system_channel_id_service.reset(
new net::ChannelIDService(
new net::DefaultChannelIDStore(NULL),
base::WorkerPool::GetTaskRunner(true)));
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile12_1(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateDnsProbeService"));
globals_->dns_probe_service.reset(new chrome_browser_net::DnsProbeService());
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile12_2(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateHostMappingRules"));
globals_->host_mapping_rules.reset(new net::HostMappingRules());
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile12_3(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CreateHTTPUserAgentSettings"));
globals_->http_user_agent_settings.reset(
new net::StaticHttpUserAgentSettings(std::string(), GetUserAgent()));
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile12_4(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::CommandLineConfiguration"));
if (command_line.HasSwitch(switches::kHostRules)) {
TRACE_EVENT_BEGIN0("startup", "IOThread::InitAsync:SetRulesFromString");
globals_->host_mapping_rules->SetRulesFromString(
command_line.GetSwitchValueASCII(switches::kHostRules));
TRACE_EVENT_END0("startup", "IOThread::InitAsync:SetRulesFromString");
}
if (command_line.HasSwitch(switches::kIgnoreCertificateErrors))
globals_->ignore_certificate_errors = true;
if (command_line.HasSwitch(switches::kTestingFixedHttpPort)) {
globals_->testing_fixed_http_port =
GetSwitchValueAsInt(command_line, switches::kTestingFixedHttpPort);
}
if (command_line.HasSwitch(switches::kTestingFixedHttpsPort)) {
globals_->testing_fixed_https_port =
GetSwitchValueAsInt(command_line, switches::kTestingFixedHttpsPort);
}
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile12_5(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::QuicConfiguration"));
ConfigureQuic(command_line);
if (command_line.HasSwitch(
switches::kEnableUserAlternateProtocolPorts)) {
globals_->enable_user_alternate_protocol_ports = true;
}
globals_->enable_brotli.set(
base::FeatureList::IsEnabled(features::kBrotliEncoding));
if (command_line.HasSwitch(switches::kEnableTokenBinding)) {
globals_->enable_token_binding = true;
}
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile13(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::InitAsync::InitializeNetworkOptions"));
InitializeNetworkOptions(command_line);
TRACE_EVENT_BEGIN0("startup",
"IOThread::Init:ProxyScriptFetcherRequestContext");
globals_->proxy_script_fetcher_context.reset(
ConstructProxyScriptFetcherContext(globals_, net_log_));
TRACE_EVENT_END0("startup",
"IOThread::Init:ProxyScriptFetcherRequestContext");
const version_info::Channel channel = chrome::GetChannel();
if (channel == version_info::Channel::UNKNOWN ||
channel == version_info::Channel::CANARY ||
channel == version_info::Channel::DEV) {
globals_->url_request_backoff_manager.reset(
new net::URLRequestBackoffManager());
}
#if defined(OS_MACOSX) && !defined(OS_IOS)
// Start observing Keychain events. This needs to be done on the UI thread,
// as Keychain services requires a CFRunLoop.
BrowserThread::PostTask(BrowserThread::UI,
FROM_HERE,
base::Bind(&ObserveKeychainEvents));
#endif
// InitSystemRequestContext turns right around and posts a task back
// to the IO thread, so we can't let it run until we know the IO
// thread has started.
//
// Note that since we are at BrowserThread::Init time, the UI thread
// is blocked waiting for the thread to start. Therefore, posting
// this task to the main thread's message loop here is guaranteed to
// get it onto the message loop while the IOThread object still
// exists. However, the message might not be processed on the UI
// thread until after IOThread is gone, so use a weak pointer.
BrowserThread::PostTask(BrowserThread::UI,
FROM_HERE,
base::Bind(&IOThread::InitSystemRequestContext,
weak_factory_.GetWeakPtr()));
}
void IOThread::CleanUp() {
base::debug::LeakTracker<SafeBrowsingURLRequestContext>::CheckForLeaks();
#if defined(USE_NSS_CERTS) || defined(OS_IOS)
net::ShutdownNSSHttpIO();
#endif
system_url_request_context_getter_ = NULL;
// Release objects that the net::URLRequestContext could have been pointing
// to.
// Shutdown the HistogramWatcher on the IO thread.
net::NetworkChangeNotifier::ShutdownHistogramWatcher();
// This must be reset before the ChromeNetLog is destroyed.
network_change_observer_.reset();
system_proxy_config_service_.reset();
delete globals_;
globals_ = NULL;
base::debug::LeakTracker<SystemURLRequestContextGetter>::CheckForLeaks();
}
void IOThread::InitializeNetworkOptions(const base::CommandLine& command_line) {
// Only handle use-spdy command line flags if "spdy.disabled" preference is
// not disabled via policy.
if (is_spdy_disabled_by_policy_) {
base::FieldTrial* trial = base::FieldTrialList::Find(kSpdyFieldTrialName);
if (trial)
trial->Disable();
} else {
std::string group = base::FieldTrialList::FindFullName(kSpdyFieldTrialName);
VariationParameters params;
if (!variations::GetVariationParams(kSpdyFieldTrialName, ¶ms)) {
params.clear();
}
ConfigureSpdyGlobals(command_line, group, params, globals_);
}
ConfigureAltSvcGlobals(
command_line, base::FieldTrialList::FindFullName(kAltSvcFieldTrialName),
globals_);
ConfigureTCPFastOpen(command_line);
ConfigureNPNGlobals(base::FieldTrialList::FindFullName(kNpnTrialName),
globals_);
// TODO(rch): Make the client socket factory a per-network session
// instance, constructed from a NetworkSession::Params, to allow us
// to move this option to IOThread::Globals &
// HttpNetworkSession::Params.
}
void IOThread::ConfigureTCPFastOpen(const base::CommandLine& command_line) {
const std::string trial_group =
base::FieldTrialList::FindFullName(kTCPFastOpenFieldTrialName);
if (trial_group == kTCPFastOpenHttpsEnabledGroupName)
globals_->enable_tcp_fast_open_for_ssl.set(true);
bool always_enable_if_supported =
command_line.HasSwitch(switches::kEnableTcpFastOpen);
// Check for OS support of TCP FastOpen, and turn it on for all connections
// if indicated by user.
net::CheckSupportAndMaybeEnableTCPFastOpen(always_enable_if_supported);
}
// static
void IOThread::ConfigureSpdyGlobals(
const base::CommandLine& command_line,
base::StringPiece spdy_trial_group,
const VariationParameters& spdy_trial_params,
IOThread::Globals* globals) {
if (command_line.HasSwitch(switches::kTrustedSpdyProxy)) {
globals->trusted_spdy_proxy.set(
command_line.GetSwitchValueASCII(switches::kTrustedSpdyProxy));
}
if (command_line.HasSwitch(switches::kIgnoreUrlFetcherCertRequests))
net::URLFetcher::SetIgnoreCertificateRequests(true);
if (command_line.HasSwitch(switches::kUseSpdy)) {
std::string spdy_mode =
command_line.GetSwitchValueASCII(switches::kUseSpdy);
ConfigureSpdyGlobalsFromUseSpdyArgument(spdy_mode, globals);
return;
}
globals->next_protos.clear();
bool enable_quic = false;
globals->enable_quic.CopyToIfSet(&enable_quic);
if (enable_quic) {
globals->next_protos.push_back(net::kProtoQUIC1SPDY3);
}
// No SPDY command-line flags have been specified. Examine trial groups.
if (spdy_trial_group.starts_with(kSpdyFieldTrialHoldbackGroupNamePrefix)) {
net::HttpStreamFactory::set_spdy_enabled(false);
} else if (spdy_trial_group.starts_with(
kSpdyFieldTrialSpdy31GroupNamePrefix)) {
globals->next_protos.push_back(net::kProtoSPDY31);
} else if (spdy_trial_group.starts_with(
kSpdyFieldTrialSpdy4GroupNamePrefix)) {
globals->next_protos.push_back(net::kProtoHTTP2);
globals->next_protos.push_back(net::kProtoSPDY31);
} else if (spdy_trial_group.starts_with(kSpdyFieldTrialParametrizedPrefix)) {
bool spdy_enabled = false;
if (base::LowerCaseEqualsASCII(
GetVariationParam(spdy_trial_params, "enable_http2"), "true")) {
globals->next_protos.push_back(net::kProtoHTTP2);
spdy_enabled = true;
}
if (base::LowerCaseEqualsASCII(
GetVariationParam(spdy_trial_params, "enable_spdy31"), "true")) {
globals->next_protos.push_back(net::kProtoSPDY31);
spdy_enabled = true;
}
// TODO(bnc): HttpStreamFactory::spdy_enabled_ is redundant with
// globals->next_protos, can it be eliminated?
net::HttpStreamFactory::set_spdy_enabled(spdy_enabled);
} else {
// By default, enable HTTP/2.
globals->next_protos.push_back(net::kProtoHTTP2);
globals->next_protos.push_back(net::kProtoSPDY31);
}
// Enable HTTP/1.1 in all cases as the last protocol.
globals->next_protos.push_back(net::kProtoHTTP11);
}
// static
void IOThread::ConfigureAltSvcGlobals(const base::CommandLine& command_line,
base::StringPiece altsvc_trial_group,
IOThread::Globals* globals) {
if (command_line.HasSwitch(switches::kEnableAlternativeServices) ||
altsvc_trial_group.starts_with(kAltSvcFieldTrialEnabledPrefix)) {
globals->parse_alternative_services.set(true);
return;
}
if (altsvc_trial_group.starts_with(kAltSvcFieldTrialDisabledPrefix)) {
globals->parse_alternative_services.set(false);
}
}
// static
void IOThread::ConfigureNPNGlobals(base::StringPiece npn_trial_group,
IOThread::Globals* globals) {
if (npn_trial_group.starts_with(kNpnTrialEnabledGroupNamePrefix)) {
globals->enable_npn.set(true);
} else if (npn_trial_group.starts_with(kNpnTrialDisabledGroupNamePrefix)) {
globals->enable_npn.set(false);
}
}
void IOThread::RegisterPrefs(PrefRegistrySimple* registry) {
registry->RegisterStringPref(prefs::kAuthSchemes,
"basic,digest,ntlm,negotiate");
registry->RegisterBooleanPref(prefs::kDisableAuthNegotiateCnameLookup, false);
registry->RegisterBooleanPref(prefs::kEnableAuthNegotiatePort, false);
registry->RegisterStringPref(prefs::kAuthServerWhitelist, std::string());
registry->RegisterStringPref(prefs::kAuthNegotiateDelegateWhitelist,
std::string());
registry->RegisterStringPref(prefs::kGSSAPILibraryName, std::string());
registry->RegisterStringPref(prefs::kAuthAndroidNegotiateAccountType,
std::string());
registry->RegisterBooleanPref(prefs::kEnableReferrers, true);
data_reduction_proxy::RegisterPrefs(registry);
registry->RegisterBooleanPref(prefs::kBuiltInDnsClientEnabled, true);
registry->RegisterBooleanPref(prefs::kQuickCheckEnabled, true);
}
void IOThread::UpdateServerWhitelist() {
globals_->http_auth_preferences->set_server_whitelist(
auth_server_whitelist_.GetValue());
}
void IOThread::UpdateDelegateWhitelist() {
globals_->http_auth_preferences->set_delegate_whitelist(
auth_delegate_whitelist_.GetValue());
}
#if defined(OS_ANDROID)
void IOThread::UpdateAndroidAuthNegotiateAccountType() {
globals_->http_auth_preferences->set_auth_android_negotiate_account_type(
auth_android_negotiate_account_type_.GetValue());
}
#endif
void IOThread::UpdateNegotiateDisableCnameLookup() {
globals_->http_auth_preferences->set_negotiate_disable_cname_lookup(
negotiate_disable_cname_lookup_.GetValue());
}
void IOThread::UpdateNegotiateEnablePort() {
globals_->http_auth_preferences->set_negotiate_enable_port(
negotiate_enable_port_.GetValue());
}
void IOThread::CreateDefaultAuthHandlerFactory() {
std::vector<std::string> supported_schemes = base::SplitString(
auth_schemes_, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
globals_->http_auth_preferences.reset(new net::HttpAuthPreferences(
supported_schemes
#if defined(OS_POSIX) && !defined(OS_ANDROID)
,
gssapi_library_name_
#endif
));
UpdateServerWhitelist();
UpdateDelegateWhitelist();
UpdateNegotiateDisableCnameLookup();
UpdateNegotiateEnablePort();
#if defined(OS_ANDROID)
UpdateAndroidAuthNegotiateAccountType();
#endif
globals_->http_auth_handler_factory =
net::HttpAuthHandlerRegistryFactory::Create(
globals_->http_auth_preferences.get(), globals_->host_resolver.get());
}
void IOThread::ClearHostCache() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
net::HostCache* host_cache = globals_->host_resolver->GetHostCache();
if (host_cache)
host_cache->clear();
}
void IOThread::InitializeNetworkSessionParams(
net::HttpNetworkSession::Params* params) {
InitializeNetworkSessionParamsFromGlobals(*globals_, params);
}
void IOThread::InitializeNetworkSessionParamsFromGlobals(
const IOThread::Globals& globals,
net::HttpNetworkSession::Params* params) {
// The next two properties of the params don't seem to be
// elements of URLRequestContext, so they must be set here.
params->ct_policy_enforcer = globals.ct_policy_enforcer.get();
params->host_mapping_rules = globals.host_mapping_rules.get();
params->ignore_certificate_errors = globals.ignore_certificate_errors;
params->testing_fixed_http_port = globals.testing_fixed_http_port;
params->testing_fixed_https_port = globals.testing_fixed_https_port;
globals.enable_tcp_fast_open_for_ssl.CopyToIfSet(
¶ms->enable_tcp_fast_open_for_ssl);
globals.initial_max_spdy_concurrent_streams.CopyToIfSet(
¶ms->spdy_initial_max_concurrent_streams);
globals.enable_spdy_compression.CopyToIfSet(
¶ms->enable_spdy_compression);
globals.enable_spdy_ping_based_connection_checking.CopyToIfSet(
¶ms->enable_spdy_ping_based_connection_checking);
globals.spdy_default_protocol.CopyToIfSet(
¶ms->spdy_default_protocol);
params->next_protos = globals.next_protos;
globals.trusted_spdy_proxy.CopyToIfSet(¶ms->trusted_spdy_proxy);
params->forced_spdy_exclusions = globals.forced_spdy_exclusions;
globals.parse_alternative_services.CopyToIfSet(
¶ms->parse_alternative_services);
globals.enable_alternative_service_with_different_host.CopyToIfSet(
¶ms->enable_alternative_service_with_different_host);
globals.alternative_service_probability_threshold.CopyToIfSet(
¶ms->alternative_service_probability_threshold);
globals.enable_npn.CopyToIfSet(¶ms->enable_npn);
globals.enable_brotli.CopyToIfSet(¶ms->enable_brotli);
globals.enable_quic.CopyToIfSet(¶ms->enable_quic);
globals.disable_quic_on_timeout_with_open_streams.CopyToIfSet(
¶ms->disable_quic_on_timeout_with_open_streams);
globals.enable_quic_for_proxies.CopyToIfSet(¶ms->enable_quic_for_proxies);
globals.quic_always_require_handshake_confirmation.CopyToIfSet(
¶ms->quic_always_require_handshake_confirmation);
globals.quic_disable_connection_pooling.CopyToIfSet(
¶ms->quic_disable_connection_pooling);
globals.quic_load_server_info_timeout_srtt_multiplier.CopyToIfSet(
¶ms->quic_load_server_info_timeout_srtt_multiplier);
globals.quic_enable_connection_racing.CopyToIfSet(
¶ms->quic_enable_connection_racing);
globals.quic_enable_non_blocking_io.CopyToIfSet(
¶ms->quic_enable_non_blocking_io);
globals.quic_prefer_aes.CopyToIfSet(¶ms->quic_prefer_aes);
globals.quic_disable_disk_cache.CopyToIfSet(
¶ms->quic_disable_disk_cache);
globals.quic_max_number_of_lossy_connections.CopyToIfSet(
¶ms->quic_max_number_of_lossy_connections);
globals.quic_packet_loss_threshold.CopyToIfSet(
¶ms->quic_packet_loss_threshold);
globals.quic_socket_receive_buffer_size.CopyToIfSet(
¶ms->quic_socket_receive_buffer_size);
globals.quic_delay_tcp_race.CopyToIfSet(¶ms->quic_delay_tcp_race);
globals.enable_quic_port_selection.CopyToIfSet(
¶ms->enable_quic_port_selection);
globals.quic_max_packet_length.CopyToIfSet(¶ms->quic_max_packet_length);
globals.quic_user_agent_id.CopyToIfSet(¶ms->quic_user_agent_id);
globals.quic_supported_versions.CopyToIfSet(
¶ms->quic_supported_versions);
params->quic_connection_options = globals.quic_connection_options;
globals.quic_close_sessions_on_ip_change.CopyToIfSet(
¶ms->quic_close_sessions_on_ip_change);
globals.quic_idle_connection_timeout_seconds.CopyToIfSet(
¶ms->quic_idle_connection_timeout_seconds);
globals.quic_disable_preconnect_if_0rtt.CopyToIfSet(
¶ms->quic_disable_preconnect_if_0rtt);
if (!globals.quic_host_whitelist.empty())
params->quic_host_whitelist = globals.quic_host_whitelist;
globals.quic_migrate_sessions_on_network_change.CopyToIfSet(
¶ms->quic_migrate_sessions_on_network_change);
globals.origin_to_force_quic_on.CopyToIfSet(
¶ms->origin_to_force_quic_on);
params->enable_user_alternate_protocol_ports =
globals.enable_user_alternate_protocol_ports;
params->enable_token_binding = globals.enable_token_binding;
}
base::TimeTicks IOThread::creation_time() const {
return creation_time_;
}
net::SSLConfigService* IOThread::GetSSLConfigService() {
return ssl_config_service_manager_->Get();
}
void IOThread::ChangedToOnTheRecordOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Clear the host cache to avoid showing entries from the OTR session
// in about:net-internals.
ClearHostCache();
}
void IOThread::InitSystemRequestContext() {
if (system_url_request_context_getter_.get())
return;
// If we're in unit_tests, IOThread may not be run.
if (!BrowserThread::IsMessageLoopValid(BrowserThread::IO))
return;
system_proxy_config_service_ = ProxyServiceFactory::CreateProxyConfigService(
pref_proxy_config_tracker_.get());
system_url_request_context_getter_ =
new SystemURLRequestContextGetter(this);
// Safe to post an unretained this pointer, since IOThread is
// guaranteed to outlive the IO BrowserThread.
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&IOThread::InitSystemRequestContextOnIOThread,
base::Unretained(this)));
}
void IOThread::InitSystemRequestContextOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!globals_->system_proxy_service.get());
DCHECK(system_proxy_config_service_.get());
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
globals_->system_proxy_service = ProxyServiceFactory::CreateProxyService(
net_log_, globals_->proxy_script_fetcher_context.get(),
globals_->system_network_delegate.get(),
std::move(system_proxy_config_service_), command_line,
quick_check_enabled_.GetValue());
globals_->system_request_context.reset(
ConstructSystemRequestContext(globals_, net_log_));
}
void IOThread::UpdateDnsClientEnabled() {
globals()->host_resolver->SetDnsClientEnabled(*dns_client_enabled_);
}
void IOThread::ConfigureQuic(const base::CommandLine& command_line) {
// Always fetch the field trial group to ensure it is reported correctly.
// The command line flags will be associated with a group that is reported
// so long as trial is actually queried.
std::string group =
base::FieldTrialList::FindFullName(kQuicFieldTrialName);
VariationParameters params;
if (!variations::GetVariationParams(kQuicFieldTrialName, ¶ms)) {
params.clear();
}
ConfigureQuicGlobals(command_line, group, params, is_quic_allowed_by_policy_,
globals_);
}
void IOThread::ConfigureQuicGlobals(
const base::CommandLine& command_line,
base::StringPiece quic_trial_group,
const VariationParameters& quic_trial_params,
bool quic_allowed_by_policy,
IOThread::Globals* globals) {
bool enable_quic = ShouldEnableQuic(command_line, quic_trial_group,
quic_allowed_by_policy);
globals->enable_quic.set(enable_quic);
globals->disable_quic_on_timeout_with_open_streams.set(
ShouldDisableQuicWhenConnectionTimesOutWithOpenStreams(quic_trial_params));
bool enable_quic_for_proxies = ShouldEnableQuicForProxies(
command_line, quic_trial_group, quic_allowed_by_policy);
globals->enable_quic_for_proxies.set(enable_quic_for_proxies);
globals->enable_alternative_service_with_different_host.set(
ShouldQuicEnableAlternativeServicesForDifferentHost(command_line,
quic_trial_params));
if (enable_quic) {
globals->quic_always_require_handshake_confirmation.set(
ShouldQuicAlwaysRequireHandshakeConfirmation(quic_trial_params));
globals->quic_disable_connection_pooling.set(
ShouldQuicDisableConnectionPooling(quic_trial_params));
int receive_buffer_size = GetQuicSocketReceiveBufferSize(quic_trial_params);
if (receive_buffer_size != 0) {
globals->quic_socket_receive_buffer_size.set(receive_buffer_size);
}
globals->quic_delay_tcp_race.set(ShouldQuicDelayTcpRace(quic_trial_params));
float load_server_info_timeout_srtt_multiplier =
GetQuicLoadServerInfoTimeoutSrttMultiplier(quic_trial_params);
if (load_server_info_timeout_srtt_multiplier != 0) {
globals->quic_load_server_info_timeout_srtt_multiplier.set(
load_server_info_timeout_srtt_multiplier);
}
globals->quic_enable_connection_racing.set(
ShouldQuicEnableConnectionRacing(quic_trial_params));
globals->quic_enable_non_blocking_io.set(
ShouldQuicEnableNonBlockingIO(quic_trial_params));
globals->quic_disable_disk_cache.set(
ShouldQuicDisableDiskCache(quic_trial_params));
globals->quic_prefer_aes.set(
ShouldQuicPreferAes(quic_trial_params));
int max_number_of_lossy_connections = GetQuicMaxNumberOfLossyConnections(
quic_trial_params);
if (max_number_of_lossy_connections != 0) {
globals->quic_max_number_of_lossy_connections.set(
max_number_of_lossy_connections);
}
float packet_loss_threshold = GetQuicPacketLossThreshold(quic_trial_params);
if (packet_loss_threshold != 0)
globals->quic_packet_loss_threshold.set(packet_loss_threshold);
globals->enable_quic_port_selection.set(
ShouldEnableQuicPortSelection(command_line));
globals->quic_connection_options =
GetQuicConnectionOptions(command_line, quic_trial_params);
globals->quic_close_sessions_on_ip_change.set(
ShouldQuicCloseSessionsOnIpChange(quic_trial_params));
int idle_connection_timeout_seconds = GetQuicIdleConnectionTimeoutSeconds(
quic_trial_params);
if (idle_connection_timeout_seconds != 0) {
globals->quic_idle_connection_timeout_seconds.set(
idle_connection_timeout_seconds);
}
globals->quic_disable_preconnect_if_0rtt.set(
ShouldQuicDisablePreConnectIfZeroRtt(quic_trial_params));
globals->quic_host_whitelist =
GetQuicHostWhitelist(command_line, quic_trial_params);
globals->quic_migrate_sessions_on_network_change.set(
ShouldQuicMigrateSessionsOnNetworkChange(quic_trial_params));
}
size_t max_packet_length = GetQuicMaxPacketLength(command_line,
quic_trial_params);
if (max_packet_length != 0) {
globals->quic_max_packet_length.set(max_packet_length);
}
std::string quic_user_agent_id = chrome::GetChannelString();
if (!quic_user_agent_id.empty())
quic_user_agent_id.push_back(' ');
quic_user_agent_id.append(
version_info::GetProductNameAndVersionForUserAgent());
quic_user_agent_id.push_back(' ');
quic_user_agent_id.append(content::BuildOSCpuInfo());
globals->quic_user_agent_id.set(quic_user_agent_id);
net::QuicVersion version = GetQuicVersion(command_line, quic_trial_params);
if (version != net::QUIC_VERSION_UNSUPPORTED) {
net::QuicVersionVector supported_versions;
supported_versions.push_back(version);
globals->quic_supported_versions.set(supported_versions);
}
double threshold = GetAlternativeProtocolProbabilityThreshold(
command_line, quic_trial_params);
if (threshold >=0 && threshold <= 1) {
globals->alternative_service_probability_threshold.set(threshold);
globals->http_server_properties->SetAlternativeServiceProbabilityThreshold(
threshold);
}
if (command_line.HasSwitch(switches::kOriginToForceQuicOn)) {
net::HostPortPair quic_origin =
net::HostPortPair::FromString(
command_line.GetSwitchValueASCII(switches::kOriginToForceQuicOn));
if (!quic_origin.IsEmpty()) {
globals->origin_to_force_quic_on.set(quic_origin);
}
}
}
bool IOThread::ShouldDisableQuicWhenConnectionTimesOutWithOpenStreams(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params,
"disable_quic_on_timeout_with_open_streams"),
"true");
}
bool IOThread::ShouldEnableQuic(const base::CommandLine& command_line,
base::StringPiece quic_trial_group,
bool quic_allowed_by_policy) {
if (command_line.HasSwitch(switches::kDisableQuic) || !quic_allowed_by_policy)
return false;
if (command_line.HasSwitch(switches::kEnableQuic))
return true;
return quic_trial_group.starts_with(kQuicFieldTrialEnabledGroupName) ||
quic_trial_group.starts_with(kQuicFieldTrialHttpsEnabledGroupName);
}
bool IOThread::ShouldEnableQuicForProxies(const base::CommandLine& command_line,
base::StringPiece quic_trial_group,
bool quic_allowed_by_policy) {
return ShouldEnableQuic(
command_line, quic_trial_group, quic_allowed_by_policy) ||
ShouldEnableQuicForDataReductionProxy();
}
bool IOThread::ShouldEnableQuicForDataReductionProxy() {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
if (command_line.HasSwitch(switches::kDisableQuic))
return false;
return data_reduction_proxy::params::IsIncludedInQuicFieldTrial();
}
bool IOThread::ShouldEnableQuicPortSelection(
const base::CommandLine& command_line) {
if (command_line.HasSwitch(switches::kDisableQuicPortSelection))
return false;
if (command_line.HasSwitch(switches::kEnableQuicPortSelection))
return true;
return false; // Default to disabling port selection on all channels.
}
net::QuicTagVector IOThread::GetQuicConnectionOptions(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
if (command_line.HasSwitch(switches::kQuicConnectionOptions)) {
return net::QuicUtils::ParseQuicConnectionOptions(
command_line.GetSwitchValueASCII(switches::kQuicConnectionOptions));
}
VariationParameters::const_iterator it =
quic_trial_params.find("connection_options");
if (it == quic_trial_params.end()) {
return net::QuicTagVector();
}
return net::QuicUtils::ParseQuicConnectionOptions(it->second);
}
double IOThread::GetAlternativeProtocolProbabilityThreshold(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
double value;
if (command_line.HasSwitch(
switches::kAlternativeServiceProbabilityThreshold)) {
if (base::StringToDouble(
command_line.GetSwitchValueASCII(
switches::kAlternativeServiceProbabilityThreshold),
&value)) {
return value;
}
}
if (command_line.HasSwitch(switches::kEnableQuic)) {
return 0;
}
// TODO(bnc): Remove when new parameter name rolls out and server
// configuration is changed.
if (base::StringToDouble(
GetVariationParam(quic_trial_params,
"alternate_protocol_probability_threshold"),
&value)) {
return value;
}
if (base::StringToDouble(
GetVariationParam(quic_trial_params,
"alternative_service_probability_threshold"),
&value)) {
return value;
}
return -1;
}
bool IOThread::ShouldQuicAlwaysRequireHandshakeConfirmation(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params,
"always_require_handshake_confirmation"),
"true");
}
bool IOThread::ShouldQuicDisableConnectionPooling(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "disable_connection_pooling"),
"true");
}
float IOThread::GetQuicLoadServerInfoTimeoutSrttMultiplier(
const VariationParameters& quic_trial_params) {
double value;
if (base::StringToDouble(GetVariationParam(quic_trial_params,
"load_server_info_time_to_srtt"),
&value)) {
return static_cast<float>(value);
}
return 0.0f;
}
bool IOThread::ShouldQuicEnableConnectionRacing(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "enable_connection_racing"),
"true");
}
bool IOThread::ShouldQuicEnableNonBlockingIO(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "enable_non_blocking_io"),
"true");
}
bool IOThread::ShouldQuicDisableDiskCache(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "disable_disk_cache"), "true");
}
bool IOThread::ShouldQuicPreferAes(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "prefer_aes"), "true");
}
bool IOThread::ShouldQuicEnableAlternativeServicesForDifferentHost(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
// TODO(bnc): Remove inaccurately named "use_alternative_services" parameter.
return command_line.HasSwitch(switches::kEnableAlternativeServices) ||
base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "use_alternative_services"),
"true") ||
base::LowerCaseEqualsASCII(
GetVariationParam(
quic_trial_params,
"enable_alternative_service_with_different_host"),
"true");
}
int IOThread::GetQuicMaxNumberOfLossyConnections(
const VariationParameters& quic_trial_params) {
int value;
if (base::StringToInt(GetVariationParam(quic_trial_params,
"max_number_of_lossy_connections"),
&value)) {
return value;
}
return 0;
}
float IOThread::GetQuicPacketLossThreshold(
const VariationParameters& quic_trial_params) {
double value;
if (base::StringToDouble(GetVariationParam(quic_trial_params,
"packet_loss_threshold"),
&value)) {
return static_cast<float>(value);
}
return 0.0f;
}
int IOThread::GetQuicSocketReceiveBufferSize(
const VariationParameters& quic_trial_params) {
int value;
if (base::StringToInt(GetVariationParam(quic_trial_params,
"receive_buffer_size"),
&value)) {
return value;
}
return 0;
}
bool IOThread::ShouldQuicDelayTcpRace(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "delay_tcp_race"), "true");
}
bool IOThread::ShouldQuicCloseSessionsOnIpChange(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "close_sessions_on_ip_change"),
"true");
}
int IOThread::GetQuicIdleConnectionTimeoutSeconds(
const VariationParameters& quic_trial_params) {
int value;
if (base::StringToInt(GetVariationParam(quic_trial_params,
"idle_connection_timeout_seconds"),
&value)) {
return value;
}
return 0;
}
bool IOThread::ShouldQuicDisablePreConnectIfZeroRtt(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "disable_preconnect_if_0rtt"),
"true");
}
std::unordered_set<std::string> IOThread::GetQuicHostWhitelist(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
std::string whitelist;
if (command_line.HasSwitch(switches::kQuicHostWhitelist)) {
whitelist = command_line.GetSwitchValueASCII(switches::kQuicHostWhitelist);
} else {
whitelist = GetVariationParam(quic_trial_params, "quic_host_whitelist");
}
std::unordered_set<std::string> hosts;
for (const std::string& host :base::SplitString(whitelist, ",",
base::TRIM_WHITESPACE,
base::SPLIT_WANT_ALL)) {
hosts.insert(host);
}
return hosts;
}
bool IOThread::ShouldQuicMigrateSessionsOnNetworkChange(
const VariationParameters& quic_trial_params) {
return base::LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params,
"migrate_sessions_on_network_change"),
"true");
}
size_t IOThread::GetQuicMaxPacketLength(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
if (command_line.HasSwitch(switches::kQuicMaxPacketLength)) {
unsigned value;
if (!base::StringToUint(
command_line.GetSwitchValueASCII(switches::kQuicMaxPacketLength),
&value)) {
return 0;
}
return value;
}
unsigned value;
if (base::StringToUint(GetVariationParam(quic_trial_params,
"max_packet_length"),
&value)) {
return value;
}
return 0;
}
net::QuicVersion IOThread::GetQuicVersion(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
if (command_line.HasSwitch(switches::kQuicVersion)) {
return ParseQuicVersion(
command_line.GetSwitchValueASCII(switches::kQuicVersion));
}
return ParseQuicVersion(GetVariationParam(quic_trial_params, "quic_version"));
}
net::QuicVersion IOThread::ParseQuicVersion(const std::string& quic_version) {
net::QuicVersionVector supported_versions = net::QuicSupportedVersions();
for (size_t i = 0; i < supported_versions.size(); ++i) {
net::QuicVersion version = supported_versions[i];
if (net::QuicVersionToString(version) == quic_version) {
return version;
}
}
return net::QUIC_VERSION_UNSUPPORTED;
}
net::URLRequestContext* IOThread::ConstructSystemRequestContext(
IOThread::Globals* globals,
net::NetLog* net_log) {
net::URLRequestContext* context = new SystemURLRequestContext;
context->set_net_log(net_log);
context->set_host_resolver(globals->host_resolver.get());
context->set_cert_verifier(globals->cert_verifier.get());
context->set_transport_security_state(
globals->transport_security_state.get());
context->set_cert_transparency_verifier(
globals->cert_transparency_verifier.get());
context->set_ssl_config_service(globals->ssl_config_service.get());
context->set_http_auth_handler_factory(
globals->http_auth_handler_factory.get());
context->set_proxy_service(globals->system_proxy_service.get());
globals->system_url_request_job_factory.reset(
new net::URLRequestJobFactoryImpl());
context->set_job_factory(globals->system_url_request_job_factory.get());
context->set_cookie_store(globals->system_cookie_store.get());
context->set_channel_id_service(
globals->system_channel_id_service.get());
context->set_network_delegate(globals->system_network_delegate.get());
context->set_http_user_agent_settings(
globals->http_user_agent_settings.get());
context->set_network_quality_estimator(
globals->network_quality_estimator.get());
context->set_backoff_manager(globals->url_request_backoff_manager.get());
context->set_http_server_properties(
globals->http_server_properties->GetWeakPtr());
net::HttpNetworkSession::Params system_params;
InitializeNetworkSessionParamsFromGlobals(*globals, &system_params);
net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(
context, &system_params);
globals->system_http_network_session.reset(
new net::HttpNetworkSession(system_params));
globals->system_http_transaction_factory.reset(
new net::HttpNetworkLayer(globals->system_http_network_session.get()));
context->set_http_transaction_factory(
globals->system_http_transaction_factory.get());
return context;
}
net::URLRequestContext* IOThread::ConstructProxyScriptFetcherContext(
IOThread::Globals* globals,
net::NetLog* net_log) {
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile1(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::ConstructProxyScriptFetcherContext1"));
net::URLRequestContext* context = new net::URLRequestContext;
context->set_net_log(net_log);
context->set_host_resolver(globals->host_resolver.get());
context->set_cert_verifier(globals->cert_verifier.get());
context->set_transport_security_state(
globals->transport_security_state.get());
context->set_cert_transparency_verifier(
globals->cert_transparency_verifier.get());
context->set_ssl_config_service(globals->ssl_config_service.get());
context->set_http_auth_handler_factory(
globals->http_auth_handler_factory.get());
context->set_proxy_service(globals->proxy_script_fetcher_proxy_service.get());
context->set_job_factory(
globals->proxy_script_fetcher_url_request_job_factory.get());
context->set_cookie_store(globals->system_cookie_store.get());
context->set_channel_id_service(
globals->system_channel_id_service.get());
context->set_network_delegate(globals->system_network_delegate.get());
context->set_http_user_agent_settings(
globals->http_user_agent_settings.get());
context->set_http_server_properties(
globals->http_server_properties->GetWeakPtr());
net::HttpNetworkSession::Params session_params;
InitializeNetworkSessionParamsFromGlobals(*globals, &session_params);
net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(
context, &session_params);
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile2(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::ConstructProxyScriptFetcherContext2"));
globals->proxy_script_fetcher_http_network_session.reset(
new net::HttpNetworkSession(session_params));
// TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466432
// is fixed.
tracked_objects::ScopedTracker tracking_profile3(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"466432 IOThread::ConstructProxyScriptFetcherContext3"));
globals->proxy_script_fetcher_http_transaction_factory.reset(
new net::HttpNetworkLayer(
globals->proxy_script_fetcher_http_network_session.get()));
context->set_http_transaction_factory(
globals->proxy_script_fetcher_http_transaction_factory.get());
scoped_ptr<net::URLRequestJobFactoryImpl> job_factory(
new net::URLRequestJobFactoryImpl());
job_factory->SetProtocolHandler(
url::kDataScheme, make_scoped_ptr(new net::DataProtocolHandler()));
job_factory->SetProtocolHandler(
url::kFileScheme,
make_scoped_ptr(new net::FileProtocolHandler(
content::BrowserThread::GetBlockingPool()
->GetTaskRunnerWithShutdownBehavior(
base::SequencedWorkerPool::SKIP_ON_SHUTDOWN))));
#if !defined(DISABLE_FTP_SUPPORT)
globals->proxy_script_fetcher_ftp_transaction_factory.reset(
new net::FtpNetworkLayer(globals->host_resolver.get()));
job_factory->SetProtocolHandler(
url::kFtpScheme,
make_scoped_ptr(new net::FtpProtocolHandler(
globals->proxy_script_fetcher_ftp_transaction_factory.get())));
#endif
globals->proxy_script_fetcher_url_request_job_factory =
std::move(job_factory);
context->set_job_factory(
globals->proxy_script_fetcher_url_request_job_factory.get());
// TODO(rtenneti): We should probably use HttpServerPropertiesManager for the
// system URLRequestContext too. There's no reason this should be tied to a
// profile.
return context;
}