blob: 3dbfc1c56d6acb790e31e761cce248324e745378 [file] [log] [blame]
// 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 <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/debug/trace_event.h"
#include "base/logging.h"
#include "base/metrics/field_trial.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.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 "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/net/async_dns_field_trial.h"
#include "chrome/browser/net/chrome_net_log.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/pref_proxy_config_tracker.h"
#include "chrome/browser/net/proxy_service_factory.h"
#include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h"
#include "chrome/common/chrome_content_client.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/chrome_version_info.h"
#include "chrome/common/pref_names.h"
#include "components/data_reduction_proxy/browser/data_reduction_proxy_prefs.h"
#include "components/policy/core/common/policy_service.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/cookie_store_factory.h"
#include "net/base/host_mapping_rules.h"
#include "net/base/net_util.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_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_network_layer.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/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_context.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_job_factory_impl.h"
#include "net/url_request/url_request_throttler_manager.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_OPENSSL)
#include "net/cert/ct_log_verifier.h"
#include "net/cert/multi_log_ct_verifier.h"
#endif
#if defined(USE_NSS) || defined(OS_IOS)
#include "net/ocsp/nss_ocsp.h"
#endif
#if defined(SPDY_PROXY_AUTH_ORIGIN)
#include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h"
#include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings_factory.h"
#include "components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h"
#include "components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h"
#endif // defined(SPDY_PROXY_AUTH_ORIGIN)
#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 kQuicFieldTrialName[] = "QUIC";
const char kQuicFieldTrialEnabledGroupName[] = "Enabled";
const char kQuicFieldTrialHttpsEnabledGroupName[] = "HttpsEnabled";
const char kQuicFieldTrialPacketLengthSuffix[] = "BytePackets";
const char kQuicFieldTrialPacingSuffix[] = "WithPacing";
const char kQuicFieldTrialTimeBasedLossDetectionSuffix[] =
"WithTimeBasedLossDetection";
// 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 kSpdyFieldTrialHoldbackGroupName[] = "SpdyDisabled";
const char kSpdyFieldTrialHoldbackControlGroupName[] = "Control";
const char kSpdyFieldTrialSpdy4GroupName[] = "Spdy4Enabled";
const char kSpdyFieldTrialSpdy4ControlGroupName[] = "Spdy4Control";
#if defined(OS_MACOSX) && !defined(OS_IOS)
void ObserveKeychainEvents() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
net::CertDatabase::GetInstance()->SetMessageLoopForKeychainEvents();
}
#endif
// Used for the "system" URLRequestContext.
class SystemURLRequestContext : public net::URLRequestContext {
public:
SystemURLRequestContext() {
#if defined(USE_NSS) || defined(OS_IOS)
net::SetURLRequestContextForNSSHttpIO(this);
#endif
}
private:
virtual ~SystemURLRequestContext() {
AssertNoURLRequests();
#if defined(USE_NSS) || defined(OS_IOS)
net::SetURLRequestContextForNSSHttpIO(NULL);
#endif
}
};
scoped_ptr<net::HostResolver> CreateGlobalHostResolver(net::NetLog* net_log) {
TRACE_EVENT0("startup", "IOThread::CreateGlobalHostResolver");
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
net::HostResolver::Options options;
// Use the concurrency override from the command-line, if any.
if (command_line.HasSwitch(switches::kHostResolverParallelism)) {
std::string s =
command_line.GetSwitchValueASCII(switches::kHostResolverParallelism);
// Parse the switch (it should be a positive integer formatted as decimal).
int n;
if (base::StringToInt(s, &n) && n > 0) {
options.max_concurrent_resolves = static_cast<size_t>(n);
} else {
LOG(ERROR) << "Invalid switch for host resolver parallelism: " << s;
}
}
// 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
// Determine if we should disable IPv6 support.
if (command_line.HasSwitch(switches::kEnableIPv6)) {
// Disable IPv6 probing.
global_host_resolver->SetDefaultAddressFamily(
net::ADDRESS_FAMILY_UNSPECIFIED);
} else if (command_line.HasSwitch(switches::kDisableIPv6)) {
global_host_resolver->SetDefaultAddressFamily(net::ADDRESS_FAMILY_IPV4);
}
// 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.PassAs<net::HostResolver>();
scoped_ptr<net::MappedHostResolver> remapped_resolver(
new net::MappedHostResolver(global_host_resolver.Pass()));
remapped_resolver->SetRulesFromString(
command_line.GetSwitchValueASCII(switches::kHostResolverRules));
return remapped_resolver.PassAs<net::HostResolver>();
}
// TODO(willchan): Remove proxy script fetcher context since it's not necessary
// now that I got rid of refcounting URLRequestContexts.
// See IOThread::Globals for details.
net::URLRequestContext*
ConstructProxyScriptFetcherContext(IOThread::Globals* globals,
net::NetLog* net_log) {
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_http_auth_handler_factory(
globals->http_auth_handler_factory.get());
context->set_proxy_service(globals->proxy_script_fetcher_proxy_service.get());
context->set_http_transaction_factory(
globals->proxy_script_fetcher_http_transaction_factory.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());
// 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;
}
net::URLRequestContext*
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_http_auth_handler_factory(
globals->http_auth_handler_factory.get());
context->set_proxy_service(globals->system_proxy_service.get());
context->set_http_transaction_factory(
globals->system_http_transaction_factory.get());
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_throttler_manager(globals->throttler_manager.get());
context->set_network_delegate(globals->system_network_delegate.get());
context->set_http_user_agent_settings(
globals->http_user_agent_settings.get());
return context;
}
int GetSwitchValueAsInt(const 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;
}
} // 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);
}
virtual ~LoggingNetworkChangeObserver() {
net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
net::NetworkChangeNotifier::RemoveNetworkChangeObserver(this);
}
// NetworkChangeNotifier::IPAddressObserver implementation.
virtual 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.
virtual 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.
virtual 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.
virtual net::URLRequestContext* GetURLRequestContext() OVERRIDE;
virtual scoped_refptr<base::SingleThreadTaskRunner>
GetNetworkTaskRunner() const OVERRIDE;
protected:
virtual ~SystemURLRequestContextGetter();
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(BrowserThread::CurrentlyOn(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),
enable_ssl_connect_job_waiting(false),
ignore_certificate_errors(false),
testing_fixed_http_port(0),
testing_fixed_https_port(0),
enable_user_alternate_protocol_ports(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,
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),
weak_factory_(this),
creation_time_(base::TimeTicks::Now()) {
auth_schemes_ = local_state->GetString(prefs::kAuthSchemes);
negotiate_disable_cname_lookup_ = local_state->GetBoolean(
prefs::kDisableAuthNegotiateCnameLookup);
negotiate_enable_port_ = local_state->GetBoolean(
prefs::kEnableAuthNegotiatePort);
auth_server_whitelist_ = local_state->GetString(prefs::kAuthServerWhitelist);
auth_delegate_whitelist_ = local_state->GetString(
prefs::kAuthNegotiateDelegateWhitelist);
gssapi_library_name_ = local_state->GetString(prefs::kGSSAPILibraryName);
pref_proxy_config_tracker_.reset(
ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
local_state));
ChromeNetworkDelegate::InitializePrefsOnUIThread(
&system_enable_referrers_,
NULL,
NULL,
local_state);
ssl_config_service_manager_.reset(
SSLConfigServiceManager::CreateDefaultManager(local_state));
base::Value* dns_client_enabled_default = new base::FundamentalValue(
chrome_browser_net::ConfigureAsyncDnsFieldTrial());
local_state->SetDefaultPrefValue(prefs::kBuiltInDnsClientEnabled,
dns_client_enabled_default);
dns_client_enabled_.Init(prefs::kBuiltInDnsClientEnabled,
local_state,
base::Bind(&IOThread::UpdateDnsClientEnabled,
base::Unretained(this)));
dns_client_enabled_.MoveToThread(
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
quick_check_enabled_.Init(prefs::kQuickCheckEnabled,
local_state);
quick_check_enabled_.MoveToThread(
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
#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;
#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(BrowserThread::CurrentlyOn(BrowserThread::IO));
return globals_;
}
void IOThread::SetGlobalsForTesting(Globals* globals) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
DCHECK(!globals || !globals_);
globals_ = globals;
}
ChromeNetLog* IOThread::net_log() {
return net_log_;
}
void IOThread::ChangedToOnTheRecord() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&IOThread::ChangedToOnTheRecordOnIOThread,
base::Unretained(this)));
}
net::URLRequestContextGetter* IOThread::system_url_request_context_getter() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!system_url_request_context_getter_.get()) {
InitSystemRequestContext();
}
return system_url_request_context_getter_.get();
}
void IOThread::Init() {
// Prefer to use InitAsync unless you need initialization to block
// the UI thread
}
void IOThread::InitAsync() {
TRACE_EVENT0("startup", "IOThread::InitAsync");
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
#if defined(USE_NSS) || defined(OS_IOS)
net::SetMessageLoopForNSSHttpIO();
#endif
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
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
ChromeNetworkDelegate* network_delegate =
new ChromeNetworkDelegate(extension_event_router_forwarder(),
&system_enable_referrers_);
if (command_line.HasSwitch(switches::kEnableClientHints))
network_delegate->SetEnableClientHints();
#if defined(ENABLE_EXTENSIONS)
if (command_line.HasSwitch(switches::kDisableExtensionsHttpThrottling))
network_delegate->NeverThrottleRequests();
#endif
globals_->system_network_delegate.reset(network_delegate);
globals_->host_resolver = CreateGlobalHostResolver(net_log_);
UpdateDnsClientEnabled();
#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());
#if !defined(USE_OPENSSL)
// For now, Certificate Transparency is only implemented for platforms
// that use NSS.
net::MultiLogCTVerifier* ct_verifier = new net::MultiLogCTVerifier();
globals_->cert_transparency_verifier.reset(ct_verifier);
// Add built-in logs
ct_verifier->AddLogs(net::ct::CreateLogVerifiersForKnownLogs());
// Add logs from command line
if (command_line.HasSwitch(switches::kCertificateTransparencyLog)) {
std::string switch_value = command_line.GetSwitchValueASCII(
switches::kCertificateTransparencyLog);
std::vector<std::string> logs;
base::SplitString(switch_value, ',', &logs);
for (std::vector<std::string>::iterator it = logs.begin(); it != logs.end();
++it) {
const std::string& curr_log = *it;
size_t delim_pos = curr_log.find(":");
CHECK(delim_pos != std::string::npos)
<< "CT log description not provided (switch format"
" is 'description:base64_key')";
std::string log_description(curr_log.substr(0, delim_pos));
std::string ct_public_key_data;
CHECK(base::Base64Decode(curr_log.substr(delim_pos + 1),
&ct_public_key_data))
<< "Unable to decode CT public key.";
scoped_ptr<net::CTLogVerifier> external_log_verifier(
net::CTLogVerifier::Create(ct_public_key_data, log_description));
CHECK(external_log_verifier) << "Unable to parse CT public key.";
VLOG(1) << "Adding log with description " << log_description;
ct_verifier->AddLog(external_log_verifier.Pass());
}
}
#else
if (command_line.HasSwitch(switches::kCertificateTransparencyLog)) {
LOG(DFATAL) << "Certificate Transparency is not yet supported in Chrome "
"builds using OpenSSL.";
}
#endif
globals_->ssl_config_service = GetSSLConfigService();
#if defined(SPDY_PROXY_AUTH_ORIGIN)
int drp_flags = 0;
if (data_reduction_proxy::DataReductionProxyParams::
IsIncludedInFieldTrial()) {
drp_flags |=
(data_reduction_proxy::DataReductionProxyParams::kAllowed |
data_reduction_proxy::DataReductionProxyParams::kFallbackAllowed);
}
if (data_reduction_proxy::DataReductionProxyParams::
IsIncludedInAlternativeFieldTrial()) {
drp_flags |=
data_reduction_proxy::DataReductionProxyParams::kAlternativeAllowed;
}
if (data_reduction_proxy::DataReductionProxyParams::
IsIncludedInPromoFieldTrial())
drp_flags |= data_reduction_proxy::DataReductionProxyParams::kPromoAllowed;
if (data_reduction_proxy::DataReductionProxyParams::
IsIncludedInHoldbackFieldTrial())
drp_flags |= data_reduction_proxy::DataReductionProxyParams::kHoldback;
globals_->data_reduction_proxy_params.reset(
new data_reduction_proxy::DataReductionProxyParams(drp_flags));
globals_->data_reduction_proxy_auth_request_handler.reset(
new data_reduction_proxy::DataReductionProxyAuthRequestHandler(
DataReductionProxyChromeSettings::GetClient(),
globals_->data_reduction_proxy_params.get(),
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
// This is the same as in ProfileImplIOData except that we do not collect
// usage stats.
network_delegate->set_data_reduction_proxy_params(
globals_->data_reduction_proxy_params.get());
network_delegate->set_data_reduction_proxy_auth_request_handler(
globals_->data_reduction_proxy_auth_request_handler.get());
network_delegate->set_on_resolve_proxy_handler(
base::Bind(data_reduction_proxy::OnResolveProxyHandler));
#endif // defined(SPDY_PROXY_AUTH_ORIGIN)
globals_->http_auth_handler_factory.reset(CreateDefaultAuthHandlerFactory(
globals_->host_resolver.get()));
globals_->http_server_properties.reset(new net::HttpServerPropertiesImpl());
// For the ProxyScriptFetcher, we use a direct ProxyService.
globals_->proxy_script_fetcher_proxy_service.reset(
net::ProxyService::CreateDirectWithNetLog(net_log_));
// In-memory cookie store.
globals_->system_cookie_store =
content::CreateCookieStore(content::CookieStoreConfig());
// In-memory channel ID store.
globals_->system_channel_id_service.reset(
new net::ChannelIDService(
new net::DefaultChannelIDStore(NULL),
base::WorkerPool::GetTaskRunner(true)));
globals_->dns_probe_service.reset(new chrome_browser_net::DnsProbeService());
globals_->host_mapping_rules.reset(new net::HostMappingRules());
globals_->http_user_agent_settings.reset(
new net::StaticHttpUserAgentSettings(std::string(), GetUserAgent()));
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::kEnableSSLConnectJobWaiting))
globals_->enable_ssl_connect_job_waiting = true;
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);
}
ConfigureQuic(command_line);
if (command_line.HasSwitch(
switches::kEnableUserAlternateProtocolPorts)) {
globals_->enable_user_alternate_protocol_ports = true;
}
InitializeNetworkOptions(command_line);
net::HttpNetworkSession::Params session_params;
InitializeNetworkSessionParams(&session_params);
session_params.net_log = net_log_;
session_params.proxy_service =
globals_->proxy_script_fetcher_proxy_service.get();
TRACE_EVENT_BEGIN0("startup", "IOThread::InitAsync:HttpNetworkSession");
scoped_refptr<net::HttpNetworkSession> network_session(
new net::HttpNetworkSession(session_params));
globals_->proxy_script_fetcher_http_transaction_factory
.reset(new net::HttpNetworkLayer(network_session.get()));
TRACE_EVENT_END0("startup", "IOThread::InitAsync:HttpNetworkSession");
scoped_ptr<net::URLRequestJobFactoryImpl> job_factory(
new net::URLRequestJobFactoryImpl());
job_factory->SetProtocolHandler(url::kDataScheme,
new net::DataProtocolHandler());
job_factory->SetProtocolHandler(
url::kFileScheme,
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,
new net::FtpProtocolHandler(
globals_->proxy_script_fetcher_ftp_transaction_factory.get()));
#endif
globals_->proxy_script_fetcher_url_request_job_factory =
job_factory.PassAs<net::URLRequestJobFactory>();
globals_->throttler_manager.reset(new net::URLRequestThrottlerManager());
globals_->throttler_manager->set_net_log(net_log_);
// Always done in production, disabled only for unit tests.
globals_->throttler_manager->set_enable_thread_checks(true);
globals_->proxy_script_fetcher_context.reset(
ConstructProxyScriptFetcherContext(globals_, net_log_));
#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) || 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 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 {
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);
EnableSpdy(spdy_mode);
} else if (command_line.HasSwitch(switches::kEnableSpdy4)) {
globals_->next_protos = net::NextProtosSpdy4Http2();
globals_->use_alternate_protocols.set(true);
} else if (command_line.HasSwitch(switches::kDisableSpdy31)) {
globals_->next_protos = net::NextProtosSpdy3();
globals_->use_alternate_protocols.set(true);
} else if (command_line.HasSwitch(switches::kEnableNpnHttpOnly)) {
globals_->next_protos = net::NextProtosHttpOnly();
globals_->use_alternate_protocols.set(false);
} else if (command_line.HasSwitch(switches::kEnableWebSocketOverSpdy)) {
// Use the current SPDY default (SPDY/3.1).
globals_->next_protos = net::NextProtosSpdy31();
globals_->use_alternate_protocols.set(true);
} else {
// No SPDY command-line flags have been specified. Examine trial groups.
ConfigureSpdyFromTrial(
base::FieldTrialList::FindFullName(kSpdyFieldTrialName), globals_);
}
if (command_line.HasSwitch(switches::kEnableWebSocketOverSpdy))
globals_->enable_websocket_over_spdy.set(true);
}
// 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.
if (command_line.HasSwitch(switches::kEnableTcpFastOpen))
net::SetTCPFastOpenEnabled(true);
}
void IOThread::ConfigureSpdyFromTrial(const std::string& spdy_trial_group,
Globals* globals) {
if (spdy_trial_group == kSpdyFieldTrialHoldbackGroupName) {
// TODO(jgraettinger): Use net::NextProtosHttpOnly() instead?
net::HttpStreamFactory::set_spdy_enabled(false);
} else if (spdy_trial_group == kSpdyFieldTrialHoldbackControlGroupName) {
// Use the current SPDY default (SPDY/3.1).
globals->next_protos = net::NextProtosSpdy31();
globals->use_alternate_protocols.set(true);
} else if (spdy_trial_group == kSpdyFieldTrialSpdy4GroupName) {
globals->next_protos = net::NextProtosSpdy4Http2();
globals->use_alternate_protocols.set(true);
} else if (spdy_trial_group == kSpdyFieldTrialSpdy4ControlGroupName) {
// This control group is pinned at SPDY/3.1.
globals->next_protos = net::NextProtosSpdy31();
globals->use_alternate_protocols.set(true);
} else {
// Use the current SPDY default (SPDY/3.1).
globals->next_protos = net::NextProtosSpdy31();
globals->use_alternate_protocols.set(true);
}
}
void IOThread::EnableSpdy(const std::string& mode) {
static const char kOff[] = "off";
static const char kSSL[] = "ssl";
static const char kDisableSSL[] = "no-ssl";
static const char kDisablePing[] = "no-ping";
static const char kExclude[] = "exclude"; // Hosts to exclude
static const char kDisableCompression[] = "no-compress";
static const char kDisableAltProtocols[] = "no-alt-protocols";
static const char kForceAltProtocols[] = "force-alt-protocols";
static const char kSingleDomain[] = "single-domain";
static const char kInitialMaxConcurrentStreams[] = "init-max-streams";
std::vector<std::string> spdy_options;
base::SplitString(mode, ',', &spdy_options);
for (std::vector<std::string>::iterator it = spdy_options.begin();
it != spdy_options.end(); ++it) {
const std::string& element = *it;
std::vector<std::string> name_value;
base::SplitString(element, '=', &name_value);
const std::string& option =
name_value.size() > 0 ? name_value[0] : std::string();
const std::string value =
name_value.size() > 1 ? name_value[1] : std::string();
if (option == kOff) {
net::HttpStreamFactory::set_spdy_enabled(false);
} else if (option == kDisableSSL) {
globals_->spdy_default_protocol.set(net::kProtoSPDY3);
globals_->force_spdy_over_ssl.set(false);
globals_->force_spdy_always.set(true);
} else if (option == kSSL) {
globals_->spdy_default_protocol.set(net::kProtoSPDY3);
globals_->force_spdy_over_ssl.set(true);
globals_->force_spdy_always.set(true);
} else if (option == kDisablePing) {
globals_->enable_spdy_ping_based_connection_checking.set(false);
} else if (option == kExclude) {
globals_->forced_spdy_exclusions.insert(
net::HostPortPair::FromURL(GURL(value)));
} else if (option == kDisableCompression) {
globals_->enable_spdy_compression.set(false);
} else if (option == kDisableAltProtocols) {
globals_->use_alternate_protocols.set(false);
} else if (option == kForceAltProtocols) {
net::AlternateProtocolInfo pair(443, net::NPN_SPDY_3, 1);
net::HttpServerPropertiesImpl::ForceAlternateProtocol(pair);
} else if (option == kSingleDomain) {
DVLOG(1) << "FORCING SINGLE DOMAIN";
globals_->force_spdy_single_domain.set(true);
} else if (option == kInitialMaxConcurrentStreams) {
int streams;
if (base::StringToInt(value, &streams))
globals_->initial_max_spdy_concurrent_streams.set(streams);
} else if (option.empty() && it == spdy_options.begin()) {
continue;
} else {
LOG(DFATAL) << "Unrecognized spdy option: " << option;
}
}
}
// static
void IOThread::RegisterPrefs(PrefRegistrySimple* registry) {
registry->RegisterStringPref(prefs::kAuthSchemes,
"basic,digest,ntlm,negotiate,"
"spdyproxy");
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(
data_reduction_proxy::prefs::kDataReductionProxy, std::string());
registry->RegisterBooleanPref(prefs::kEnableReferrers, true);
data_reduction_proxy::RegisterPrefs(registry);
registry->RegisterBooleanPref(prefs::kBuiltInDnsClientEnabled, true);
registry->RegisterBooleanPref(prefs::kQuickCheckEnabled, true);
}
net::HttpAuthHandlerFactory* IOThread::CreateDefaultAuthHandlerFactory(
net::HostResolver* resolver) {
net::HttpAuthFilterWhitelist* auth_filter_default_credentials = NULL;
if (!auth_server_whitelist_.empty()) {
auth_filter_default_credentials =
new net::HttpAuthFilterWhitelist(auth_server_whitelist_);
}
net::HttpAuthFilterWhitelist* auth_filter_delegate = NULL;
if (!auth_delegate_whitelist_.empty()) {
auth_filter_delegate =
new net::HttpAuthFilterWhitelist(auth_delegate_whitelist_);
}
globals_->url_security_manager.reset(
net::URLSecurityManager::Create(auth_filter_default_credentials,
auth_filter_delegate));
std::vector<std::string> supported_schemes;
base::SplitString(auth_schemes_, ',', &supported_schemes);
scoped_ptr<net::HttpAuthHandlerRegistryFactory> registry_factory(
net::HttpAuthHandlerRegistryFactory::Create(
supported_schemes, globals_->url_security_manager.get(),
resolver, gssapi_library_name_, negotiate_disable_cname_lookup_,
negotiate_enable_port_));
return registry_factory.release();
}
void IOThread::ClearHostCache() {
DCHECK(BrowserThread::CurrentlyOn(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);
}
// static
void IOThread::InitializeNetworkSessionParamsFromGlobals(
const IOThread::Globals& globals,
net::HttpNetworkSession::Params* params) {
params->host_resolver = globals.host_resolver.get();
params->cert_verifier = globals.cert_verifier.get();
params->channel_id_service = globals.system_channel_id_service.get();
params->transport_security_state = globals.transport_security_state.get();
params->ssl_config_service = globals.ssl_config_service.get();
params->http_auth_handler_factory = globals.http_auth_handler_factory.get();
params->http_server_properties =
globals.http_server_properties->GetWeakPtr();
params->network_delegate = globals.system_network_delegate.get();
params->host_mapping_rules = globals.host_mapping_rules.get();
params->enable_ssl_connect_job_waiting =
globals.enable_ssl_connect_job_waiting;
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.initial_max_spdy_concurrent_streams.CopyToIfSet(
&params->spdy_initial_max_concurrent_streams);
globals.force_spdy_single_domain.CopyToIfSet(
&params->force_spdy_single_domain);
globals.enable_spdy_compression.CopyToIfSet(
&params->enable_spdy_compression);
globals.enable_spdy_ping_based_connection_checking.CopyToIfSet(
&params->enable_spdy_ping_based_connection_checking);
globals.spdy_default_protocol.CopyToIfSet(
&params->spdy_default_protocol);
params->next_protos = globals.next_protos;
globals.trusted_spdy_proxy.CopyToIfSet(&params->trusted_spdy_proxy);
globals.force_spdy_over_ssl.CopyToIfSet(&params->force_spdy_over_ssl);
globals.force_spdy_always.CopyToIfSet(&params->force_spdy_always);
params->forced_spdy_exclusions = globals.forced_spdy_exclusions;
globals.use_alternate_protocols.CopyToIfSet(
&params->use_alternate_protocols);
globals.alternate_protocol_probability_threshold.CopyToIfSet(
&params->alternate_protocol_probability_threshold);
globals.enable_websocket_over_spdy.CopyToIfSet(
&params->enable_websocket_over_spdy);
globals.enable_quic.CopyToIfSet(&params->enable_quic);
globals.enable_quic_time_based_loss_detection.CopyToIfSet(
&params->enable_quic_time_based_loss_detection);
globals.enable_quic_port_selection.CopyToIfSet(
&params->enable_quic_port_selection);
globals.quic_max_packet_length.CopyToIfSet(&params->quic_max_packet_length);
globals.quic_user_agent_id.CopyToIfSet(&params->quic_user_agent_id);
globals.quic_supported_versions.CopyToIfSet(
&params->quic_supported_versions);
params->quic_connection_options = globals.quic_connection_options;
globals.origin_to_force_quic_on.CopyToIfSet(
&params->origin_to_force_quic_on);
params->enable_user_alternate_protocol_ports =
globals.enable_user_alternate_protocol_ports;
}
base::TimeTicks IOThread::creation_time() const {
return creation_time_;
}
net::SSLConfigService* IOThread::GetSSLConfigService() {
return ssl_config_service_manager_->Get();
}
void IOThread::ChangedToOnTheRecordOnIOThread() {
DCHECK(BrowserThread::CurrentlyOn(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_.reset(
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(BrowserThread::CurrentlyOn(BrowserThread::IO));
DCHECK(!globals_->system_proxy_service.get());
DCHECK(system_proxy_config_service_.get());
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
globals_->system_proxy_service.reset(
ProxyServiceFactory::CreateProxyService(
net_log_,
globals_->proxy_script_fetcher_context.get(),
globals_->system_network_delegate.get(),
system_proxy_config_service_.release(),
command_line,
quick_check_enabled_.GetValue()));
net::HttpNetworkSession::Params system_params;
InitializeNetworkSessionParams(&system_params);
system_params.net_log = net_log_;
system_params.proxy_service = globals_->system_proxy_service.get();
globals_->system_http_transaction_factory.reset(
new net::HttpNetworkLayer(
new net::HttpNetworkSession(system_params)));
globals_->system_url_request_job_factory.reset(
new net::URLRequestJobFactoryImpl());
globals_->system_request_context.reset(
ConstructSystemRequestContext(globals_, net_log_));
globals_->system_request_context->set_ssl_config_service(
globals_->ssl_config_service);
globals_->system_request_context->set_http_server_properties(
globals_->http_server_properties->GetWeakPtr());
}
void IOThread::UpdateDnsClientEnabled() {
globals()->host_resolver->SetDnsClientEnabled(*dns_client_enabled_);
}
void IOThread::ConfigureQuic(const 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, &params)) {
params.clear();
}
ConfigureQuicGlobals(command_line, group, params, globals_);
}
// static
void IOThread::ConfigureQuicGlobals(
const base::CommandLine& command_line,
base::StringPiece quic_trial_group,
const VariationParameters& quic_trial_params,
IOThread::Globals* globals) {
bool enable_quic = ShouldEnableQuic(command_line, quic_trial_group);
globals->enable_quic.set(enable_quic);
if (enable_quic) {
globals->enable_quic_time_based_loss_detection.set(
ShouldEnableQuicTimeBasedLossDetection(command_line, quic_trial_group,
quic_trial_params));
globals->enable_quic_port_selection.set(
ShouldEnableQuicPortSelection(command_line));
globals->quic_connection_options =
GetQuicConnectionOptions(command_line, quic_trial_params);
if (ShouldEnableQuicPacing(command_line, quic_trial_group,
quic_trial_params)) {
globals->quic_connection_options.push_back(net::kPACE);
}
}
size_t max_packet_length = GetQuicMaxPacketLength(command_line,
quic_trial_group,
quic_trial_params);
if (max_packet_length != 0) {
globals->quic_max_packet_length.set(max_packet_length);
}
std::string quic_user_agent_id =
chrome::VersionInfo::GetVersionStringModifier();
if (!quic_user_agent_id.empty())
quic_user_agent_id.push_back(' ');
chrome::VersionInfo version_info;
quic_user_agent_id.append(version_info.ProductNameAndVersionForUserAgent());
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 =
GetAlternateProtocolProbabilityThreshold(command_line, quic_trial_params);
if (threshold >=0 && threshold <= 1) {
globals->alternate_protocol_probability_threshold.set(threshold);
globals->http_server_properties->SetAlternateProtocolProbabilityThreshold(
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::ShouldEnableQuic(const CommandLine& command_line,
base::StringPiece quic_trial_group) {
if (command_line.HasSwitch(switches::kDisableQuic))
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::ShouldEnableQuicPortSelection(
const 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.
}
bool IOThread::ShouldEnableQuicPacing(
const CommandLine& command_line,
base::StringPiece quic_trial_group,
const VariationParameters& quic_trial_params) {
if (command_line.HasSwitch(switches::kEnableQuicPacing))
return true;
if (command_line.HasSwitch(switches::kDisableQuicPacing))
return false;
if (LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "enable_pacing"),
"true"))
return true;
return quic_trial_group.ends_with(kQuicFieldTrialPacingSuffix);
}
net::QuicTagVector IOThread::GetQuicConnectionOptions(
const CommandLine& command_line,
const VariationParameters& quic_trial_params) {
if (command_line.HasSwitch(switches::kQuicConnectionOptions)) {
return ParseQuicConnectionOptions(
command_line.GetSwitchValueASCII(switches::kQuicConnectionOptions));
}
VariationParameters::const_iterator it =
quic_trial_params.find("connection_options");
if (it == quic_trial_params.end()) {
// TODO(rch): remove support for deprecated congestion_options.
it = quic_trial_params.find("congestion_options");
if (it == quic_trial_params.end())
return net::QuicTagVector();
}
return ParseQuicConnectionOptions(it->second);
}
// static
net::QuicTagVector IOThread::ParseQuicConnectionOptions(
const std::string& connection_options) {
net::QuicTagVector options;
std::vector<std::string> tokens;
base::SplitString(connection_options, ',', &tokens);
// Tokens are expected to be no more than 4 characters long, but we
// handle overflow gracefully.
for (std::vector<std::string>::iterator token = tokens.begin();
token != tokens.end(); ++token) {
uint32 option = 0;
for (size_t i = token->length() ; i > 0; --i) {
option <<= 8;
option |= static_cast<unsigned char>((*token)[i - 1]);
}
options.push_back(static_cast<net::QuicTag>(option));
}
return options;
}
// static
double IOThread::GetAlternateProtocolProbabilityThreshold(
const base::CommandLine& command_line,
const VariationParameters& quic_trial_params) {
double value;
if (command_line.HasSwitch(
switches::kAlternateProtocolProbabilityThreshold)) {
if (base::StringToDouble(
command_line.GetSwitchValueASCII(
switches::kAlternateProtocolProbabilityThreshold),
&value)) {
return value;
}
}
if (base::StringToDouble(
GetVariationParam(quic_trial_params,
"alternate_protocol_probability_threshold"),
&value)) {
return value;
}
return -1;
}
// static
bool IOThread::ShouldEnableQuicTimeBasedLossDetection(
const CommandLine& command_line,
base::StringPiece quic_trial_group,
const VariationParameters& quic_trial_params) {
if (command_line.HasSwitch(switches::kEnableQuicTimeBasedLossDetection))
return true;
if (command_line.HasSwitch(switches::kDisableQuicTimeBasedLossDetection))
return false;
if (LowerCaseEqualsASCII(
GetVariationParam(quic_trial_params, "enable_time_based_loss_detection"),
"true"))
return true;
return quic_trial_group.ends_with(
kQuicFieldTrialTimeBasedLossDetectionSuffix);
}
// static
size_t IOThread::GetQuicMaxPacketLength(
const CommandLine& command_line,
base::StringPiece quic_trial_group,
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;
}
// Format of the packet length group names is:
// (Https)?Enabled<length>BytePackets.
base::StringPiece length_str(quic_trial_group);
if (length_str.starts_with(kQuicFieldTrialEnabledGroupName)) {
length_str.remove_prefix(strlen(kQuicFieldTrialEnabledGroupName));
} else if (length_str.starts_with(kQuicFieldTrialHttpsEnabledGroupName)) {
length_str.remove_prefix(strlen(kQuicFieldTrialHttpsEnabledGroupName));
} else {
return 0;
}
if (!length_str.ends_with(kQuicFieldTrialPacketLengthSuffix)) {
return 0;
}
length_str.remove_suffix(strlen(kQuicFieldTrialPacketLengthSuffix));
if (!base::StringToUint(length_str, &value)) {
return 0;
}
return value;
}
// static
net::QuicVersion IOThread::GetQuicVersion(
const 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"));
}
// static
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;
}