blob: 92339d535a46b1133a0eca1d68ade0e8086ecf35 [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 "net/quic/chromium/quic_stream_factory.h"
#include <algorithm>
#include <tuple>
#include <utility>
#include "base/location.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/sparse_histogram.h"
#include "base/rand_util.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/trace_event/trace_event.h"
#include "base/values.h"
#include "crypto/openssl_util.h"
#include "net/base/ip_address.h"
#include "net/base/net_errors.h"
#include "net/base/proxy_delegate.h"
#include "net/base/trace_constants.h"
#include "net/cert/cert_verifier.h"
#include "net/cert/ct_verifier.h"
#include "net/dns/host_resolver.h"
#include "net/http/bidirectional_stream_impl.h"
#include "net/log/net_log_capture_mode.h"
#include "net/log/net_log_event_type.h"
#include "net/log/net_log_source_type.h"
#include "net/quic/chromium/bidirectional_stream_quic_impl.h"
#include "net/quic/chromium/crypto/channel_id_chromium.h"
#include "net/quic/chromium/crypto/proof_verifier_chromium.h"
#include "net/quic/chromium/quic_chromium_alarm_factory.h"
#include "net/quic/chromium/quic_chromium_connection_helper.h"
#include "net/quic/chromium/quic_chromium_packet_reader.h"
#include "net/quic/chromium/quic_chromium_packet_writer.h"
#include "net/quic/chromium/quic_crypto_client_stream_factory.h"
#include "net/quic/core/crypto/proof_verifier.h"
#include "net/quic/core/crypto/properties_based_quic_server_info.h"
#include "net/quic/core/crypto/quic_random.h"
#include "net/quic/core/crypto/quic_server_info.h"
#include "net/quic/core/quic_client_promised_info.h"
#include "net/quic/core/quic_connection.h"
#include "net/quic/core/quic_flags.h"
#include "net/quic/platform/api/quic_clock.h"
#include "net/socket/client_socket_factory.h"
#include "net/socket/next_proto.h"
#include "net/socket/socket_performance_watcher.h"
#include "net/socket/socket_performance_watcher_factory.h"
#include "net/socket/udp_client_socket.h"
#include "net/ssl/token_binding.h"
#include "third_party/boringssl/src/include/openssl/aead.h"
#include "url/gurl.h"
#include "url/url_constants.h"
using NetworkHandle = net::NetworkChangeNotifier::NetworkHandle;
namespace net {
namespace {
enum CreateSessionFailure {
CREATION_ERROR_CONNECTING_SOCKET,
CREATION_ERROR_SETTING_RECEIVE_BUFFER,
CREATION_ERROR_SETTING_SEND_BUFFER,
CREATION_ERROR_SETTING_DO_NOT_FRAGMENT,
CREATION_ERROR_MAX
};
// The maximum receive window sizes for QUIC sessions and streams.
const int32_t kQuicSessionMaxRecvWindowSize = 15 * 1024 * 1024; // 15 MB
const int32_t kQuicStreamMaxRecvWindowSize = 6 * 1024 * 1024; // 6 MB
// Set the maximum number of undecryptable packets the connection will store.
const int32_t kMaxUndecryptablePackets = 100;
// How long QUIC will be disabled for because of timeouts with open streams.
const int kDisableQuicTimeoutSecs = 5 * 60;
std::unique_ptr<base::Value> NetLogQuicConnectionMigrationTriggerCallback(
std::string trigger,
NetLogCaptureMode capture_mode) {
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
dict->SetString("trigger", trigger);
return std::move(dict);
}
std::unique_ptr<base::Value> NetLogQuicConnectionMigrationFailureCallback(
QuicConnectionId connection_id,
std::string reason,
NetLogCaptureMode capture_mode) {
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
dict->SetString("connection_id", base::Uint64ToString(connection_id));
dict->SetString("reason", reason);
return std::move(dict);
}
std::unique_ptr<base::Value> NetLogQuicConnectionMigrationSuccessCallback(
QuicConnectionId connection_id,
NetLogCaptureMode capture_mode) {
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
dict->SetString("connection_id", base::Uint64ToString(connection_id));
return std::move(dict);
}
// Helper class that is used to log a connection migration event.
class ScopedConnectionMigrationEventLog {
public:
ScopedConnectionMigrationEventLog(NetLog* net_log, std::string trigger)
: net_log_(NetLogWithSource::Make(
net_log,
NetLogSourceType::QUIC_CONNECTION_MIGRATION)) {
net_log_.BeginEvent(
NetLogEventType::QUIC_CONNECTION_MIGRATION_TRIGGERED,
base::Bind(&NetLogQuicConnectionMigrationTriggerCallback, trigger));
}
~ScopedConnectionMigrationEventLog() {
net_log_.EndEvent(NetLogEventType::QUIC_CONNECTION_MIGRATION_TRIGGERED);
}
const NetLogWithSource& net_log() { return net_log_; }
private:
const NetLogWithSource net_log_;
};
void HistogramCreateSessionFailure(enum CreateSessionFailure error) {
UMA_HISTOGRAM_ENUMERATION("Net.QuicSession.CreationError", error,
CREATION_ERROR_MAX);
}
void HistogramAndLogMigrationFailure(const NetLogWithSource& net_log,
enum QuicConnectionMigrationStatus status,
QuicConnectionId connection_id,
std::string reason) {
UMA_HISTOGRAM_ENUMERATION("Net.QuicSession.ConnectionMigration", status,
MIGRATION_STATUS_MAX);
net_log.AddEvent(NetLogEventType::QUIC_CONNECTION_MIGRATION_FAILURE,
base::Bind(&NetLogQuicConnectionMigrationFailureCallback,
connection_id, reason));
}
void HistogramMigrationStatus(enum QuicConnectionMigrationStatus status) {
UMA_HISTOGRAM_ENUMERATION("Net.QuicSession.ConnectionMigration", status,
MIGRATION_STATUS_MAX);
}
QuicConfig InitializeQuicConfig(const QuicTagVector& connection_options,
int idle_connection_timeout_seconds) {
DCHECK_GT(idle_connection_timeout_seconds, 0);
QuicConfig config;
config.SetIdleNetworkTimeout(
QuicTime::Delta::FromSeconds(idle_connection_timeout_seconds),
QuicTime::Delta::FromSeconds(idle_connection_timeout_seconds));
config.SetConnectionOptionsToSend(connection_options);
return config;
}
// An implementation of QuicCryptoClientConfig::ServerIdFilter that wraps
// an |origin_filter|.
class ServerIdOriginFilter : public QuicCryptoClientConfig::ServerIdFilter {
public:
ServerIdOriginFilter(const base::Callback<bool(const GURL&)> origin_filter)
: origin_filter_(origin_filter) {}
bool Matches(const QuicServerId& server_id) const override {
if (origin_filter_.is_null())
return true;
GURL url(base::StringPrintf("%s%s%s:%d", url::kHttpsScheme,
url::kStandardSchemeSeparator,
server_id.host().c_str(), server_id.port()));
DCHECK(url.is_valid());
return origin_filter_.Run(url);
}
private:
const base::Callback<bool(const GURL&)> origin_filter_;
};
} // namespace
// Responsible for verifying the certificates saved in
// QuicCryptoClientConfig, and for notifying any associated requests when
// complete. Results from cert verification are ignored.
class QuicStreamFactory::CertVerifierJob {
public:
// ProofVerifierCallbackImpl is passed as the callback method to
// VerifyCertChain. The ProofVerifier calls this class with the result of cert
// verification when verification is performed asynchronously.
class ProofVerifierCallbackImpl : public ProofVerifierCallback {
public:
explicit ProofVerifierCallbackImpl(CertVerifierJob* job) : job_(job) {}
~ProofVerifierCallbackImpl() override {}
void Run(bool ok,
const std::string& error_details,
std::unique_ptr<ProofVerifyDetails>* details) override {
if (job_ == nullptr)
return;
job_->verify_callback_ = nullptr;
job_->OnComplete();
}
void Cancel() { job_ = nullptr; }
private:
CertVerifierJob* job_;
};
CertVerifierJob(const QuicServerId& server_id,
int cert_verify_flags,
const NetLogWithSource& net_log)
: server_id_(server_id),
verify_callback_(nullptr),
verify_context_(base::WrapUnique(
new ProofVerifyContextChromium(cert_verify_flags, net_log))),
start_time_(base::TimeTicks::Now()),
net_log_(net_log),
weak_factory_(this) {}
~CertVerifierJob() {
if (verify_callback_)
verify_callback_->Cancel();
}
// Starts verification of certs cached in the |crypto_config|.
QuicAsyncStatus Run(QuicCryptoClientConfig* crypto_config,
const CompletionCallback& callback) {
QuicCryptoClientConfig::CachedState* cached =
crypto_config->LookupOrCreate(server_id_);
ProofVerifierCallbackImpl* verify_callback =
new ProofVerifierCallbackImpl(this);
QuicAsyncStatus status = crypto_config->proof_verifier()->VerifyCertChain(
server_id_.host(), cached->certs(), verify_context_.get(),
&verify_error_details_, &verify_details_,
std::unique_ptr<ProofVerifierCallback>(verify_callback));
if (status == QUIC_PENDING) {
verify_callback_ = verify_callback;
callback_ = callback;
}
return status;
}
void OnComplete() {
UMA_HISTOGRAM_TIMES("Net.QuicSession.CertVerifierJob.CompleteTime",
base::TimeTicks::Now() - start_time_);
if (!callback_.is_null())
callback_.Run(OK);
}
const QuicServerId& server_id() const { return server_id_; }
private:
QuicServerId server_id_;
ProofVerifierCallbackImpl* verify_callback_;
std::unique_ptr<ProofVerifyContext> verify_context_;
std::unique_ptr<ProofVerifyDetails> verify_details_;
std::string verify_error_details_;
base::TimeTicks start_time_;
const NetLogWithSource net_log_;
CompletionCallback callback_;
base::WeakPtrFactory<CertVerifierJob> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(CertVerifierJob);
};
// Responsible for creating a new QUIC session to the specified server, and
// for notifying any associated requests when complete.
class QuicStreamFactory::Job {
public:
Job(QuicStreamFactory* factory,
HostResolver* host_resolver,
const QuicSessionKey& key,
bool was_alternative_service_recently_broken,
int cert_verify_flags,
QuicServerInfo* server_info,
const NetLogWithSource& net_log);
// Creates a new job to handle the resumption of for connecting an
// existing session.
Job(QuicStreamFactory* factory,
HostResolver* host_resolver,
QuicChromiumClientSession* session,
const QuicSessionKey& key);
~Job();
int Run(const CompletionCallback& callback);
int DoLoop(int rv);
int DoResolveHost();
int DoResolveHostComplete(int rv);
int DoLoadServerInfo();
int DoLoadServerInfoComplete(int rv);
int DoConnect();
int DoResumeConnect();
int DoConnectComplete(int rv);
void OnIOComplete(int rv);
void RunAuxilaryJob();
void Cancel();
void CancelWaitForDataReadyCallback();
const QuicSessionKey& key() const { return key_; }
base::WeakPtr<Job> GetWeakPtr() { return weak_factory_.GetWeakPtr(); }
private:
enum IoState {
STATE_NONE,
STATE_RESOLVE_HOST,
STATE_RESOLVE_HOST_COMPLETE,
STATE_LOAD_SERVER_INFO,
STATE_LOAD_SERVER_INFO_COMPLETE,
STATE_CONNECT,
STATE_RESUME_CONNECT,
STATE_CONNECT_COMPLETE,
};
IoState io_state_;
QuicStreamFactory* factory_;
HostResolver* host_resolver_;
std::unique_ptr<HostResolver::Request> request_;
QuicSessionKey key_;
int cert_verify_flags_;
bool was_alternative_service_recently_broken_;
std::unique_ptr<QuicServerInfo> server_info_;
bool started_another_job_;
const NetLogWithSource net_log_;
int num_sent_client_hellos_;
QuicChromiumClientSession* session_;
CompletionCallback callback_;
AddressList address_list_;
base::TimeTicks dns_resolution_start_time_;
base::TimeTicks dns_resolution_end_time_;
base::WeakPtrFactory<Job> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(Job);
};
QuicStreamFactory::Job::Job(QuicStreamFactory* factory,
HostResolver* host_resolver,
const QuicSessionKey& key,
bool was_alternative_service_recently_broken,
int cert_verify_flags,
QuicServerInfo* server_info,
const NetLogWithSource& net_log)
: io_state_(STATE_RESOLVE_HOST),
factory_(factory),
host_resolver_(host_resolver),
key_(key),
cert_verify_flags_(cert_verify_flags),
was_alternative_service_recently_broken_(
was_alternative_service_recently_broken),
server_info_(server_info),
started_another_job_(false),
net_log_(net_log),
num_sent_client_hellos_(0),
session_(nullptr),
weak_factory_(this) {}
QuicStreamFactory::Job::Job(QuicStreamFactory* factory,
HostResolver* host_resolver,
QuicChromiumClientSession* session,
const QuicSessionKey& key)
: io_state_(STATE_RESUME_CONNECT),
factory_(factory),
host_resolver_(host_resolver), // unused
key_(key),
cert_verify_flags_(0), // unused
was_alternative_service_recently_broken_(false), // unused
started_another_job_(false), // unused
net_log_(session->net_log()), // unused
num_sent_client_hellos_(0),
session_(session),
weak_factory_(this) {}
QuicStreamFactory::Job::~Job() {
// If disk cache has a pending WaitForDataReadyCallback, cancel that callback.
if (server_info_)
server_info_->ResetWaitForDataReadyCallback();
}
int QuicStreamFactory::Job::Run(const CompletionCallback& callback) {
int rv = DoLoop(OK);
if (rv == ERR_IO_PENDING)
callback_ = callback;
return rv > 0 ? OK : rv;
}
int QuicStreamFactory::Job::DoLoop(int rv) {
TRACE_EVENT0(kNetTracingCategory, "QuicStreamFactory::Job::DoLoop");
do {
IoState state = io_state_;
io_state_ = STATE_NONE;
switch (state) {
case STATE_RESOLVE_HOST:
CHECK_EQ(OK, rv);
rv = DoResolveHost();
break;
case STATE_RESOLVE_HOST_COMPLETE:
rv = DoResolveHostComplete(rv);
break;
case STATE_LOAD_SERVER_INFO:
CHECK_EQ(OK, rv);
rv = DoLoadServerInfo();
break;
case STATE_LOAD_SERVER_INFO_COMPLETE:
rv = DoLoadServerInfoComplete(rv);
break;
case STATE_CONNECT:
CHECK_EQ(OK, rv);
rv = DoConnect();
break;
case STATE_RESUME_CONNECT:
CHECK_EQ(OK, rv);
rv = DoResumeConnect();
break;
case STATE_CONNECT_COMPLETE:
rv = DoConnectComplete(rv);
break;
default:
NOTREACHED() << "io_state_: " << io_state_;
break;
}
} while (io_state_ != STATE_NONE && rv != ERR_IO_PENDING);
return rv;
}
void QuicStreamFactory::Job::OnIOComplete(int rv) {
rv = DoLoop(rv);
if (rv != ERR_IO_PENDING && !callback_.is_null()) {
callback_.Run(rv);
}
}
void QuicStreamFactory::Job::RunAuxilaryJob() {
int rv = Run(base::Bind(&QuicStreamFactory::OnJobComplete,
base::Unretained(factory_), this));
if (rv != ERR_IO_PENDING)
factory_->OnJobComplete(this, rv);
}
void QuicStreamFactory::Job::Cancel() {
callback_.Reset();
if (session_)
session_->connection()->CloseConnection(
QUIC_CONNECTION_CANCELLED, "New job canceled.",
ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
}
void QuicStreamFactory::Job::CancelWaitForDataReadyCallback() {
// If we are waiting for WaitForDataReadyCallback, then cancel the callback.
if (io_state_ != STATE_LOAD_SERVER_INFO_COMPLETE)
return;
server_info_->CancelWaitForDataReadyCallback();
OnIOComplete(OK);
}
int QuicStreamFactory::Job::DoResolveHost() {
dns_resolution_start_time_ = base::TimeTicks::Now();
// Start loading the data now, and wait for it after we resolve the host.
if (server_info_)
server_info_->Start();
io_state_ = STATE_RESOLVE_HOST_COMPLETE;
return host_resolver_->Resolve(
HostResolver::RequestInfo(key_.destination()), DEFAULT_PRIORITY,
&address_list_,
base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()),
&request_, net_log_);
}
int QuicStreamFactory::Job::DoResolveHostComplete(int rv) {
dns_resolution_end_time_ = base::TimeTicks::Now();
if (rv != OK)
return rv;
DCHECK(!factory_->HasActiveSession(key_.server_id()));
// Inform the factory of this resolution, which will set up
// a session alias, if possible.
if (factory_->OnResolution(key_, address_list_))
return OK;
if (server_info_)
io_state_ = STATE_LOAD_SERVER_INFO;
else
io_state_ = STATE_CONNECT;
return OK;
}
int QuicStreamFactory::Job::DoLoadServerInfo() {
io_state_ = STATE_LOAD_SERVER_INFO_COMPLETE;
DCHECK(server_info_);
// To mitigate the effects of disk cache taking too long to load QUIC server
// information, set up a timer to cancel WaitForDataReady's callback.
if (factory_->load_server_info_timeout_srtt_multiplier_ > 0) {
const int kMaxLoadServerInfoTimeoutMs = 50;
// Wait for DiskCache a maximum of 50ms.
int64_t load_server_info_timeout_ms =
std::min(static_cast<int>(
(factory_->load_server_info_timeout_srtt_multiplier_ *
factory_->GetServerNetworkStatsSmoothedRttInMicroseconds(
key_.server_id())) /
1000),
kMaxLoadServerInfoTimeoutMs);
if (load_server_info_timeout_ms > 0) {
factory_->task_runner_->PostDelayedTask(
FROM_HERE,
base::Bind(&QuicStreamFactory::Job::CancelWaitForDataReadyCallback,
GetWeakPtr()),
base::TimeDelta::FromMilliseconds(load_server_info_timeout_ms));
}
}
int rv = server_info_->WaitForDataReady(
base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()));
if (rv == ERR_IO_PENDING && factory_->enable_connection_racing()) {
// If we are waiting to load server config from the disk cache, then start
// another job.
started_another_job_ = true;
factory_->CreateAuxilaryJob(key_, cert_verify_flags_, net_log_);
}
return rv;
}
int QuicStreamFactory::Job::DoLoadServerInfoComplete(int rv) {
UMA_HISTOGRAM_TIMES("Net.QuicServerInfo.DiskCacheWaitForDataReadyTime",
base::TimeTicks::Now() - dns_resolution_end_time_);
if (rv != OK)
server_info_.reset();
if (started_another_job_ &&
(!server_info_ || server_info_->state().server_config.empty() ||
!factory_->CryptoConfigCacheIsEmpty(key_.server_id()))) {
// If we have started another job and if we didn't load the server config
// from the disk cache or if we have received a new server config from the
// server, then cancel the current job.
io_state_ = STATE_NONE;
return ERR_CONNECTION_CLOSED;
}
io_state_ = STATE_CONNECT;
return OK;
}
int QuicStreamFactory::Job::DoConnect() {
io_state_ = STATE_CONNECT_COMPLETE;
int rv =
factory_->CreateSession(key_, cert_verify_flags_, std::move(server_info_),
address_list_, dns_resolution_start_time_,
dns_resolution_end_time_, net_log_, &session_);
if (rv != OK) {
DCHECK(rv != ERR_IO_PENDING);
DCHECK(!session_);
return rv;
}
if (!session_->connection()->connected())
return ERR_CONNECTION_CLOSED;
session_->StartReading();
if (!session_->connection()->connected())
return ERR_QUIC_PROTOCOL_ERROR;
bool require_confirmation = factory_->require_confirmation() ||
was_alternative_service_recently_broken_;
rv = session_->CryptoConnect(
require_confirmation,
base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()));
if (!session_->connection()->connected() &&
session_->error() == QUIC_PROOF_INVALID) {
return ERR_QUIC_HANDSHAKE_FAILED;
}
return rv;
}
int QuicStreamFactory::Job::DoResumeConnect() {
io_state_ = STATE_CONNECT_COMPLETE;
int rv = session_->ResumeCryptoConnect(
base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()));
return rv;
}
int QuicStreamFactory::Job::DoConnectComplete(int rv) {
if (session_ && session_->error() == QUIC_CRYPTO_HANDSHAKE_STATELESS_REJECT) {
num_sent_client_hellos_ += session_->GetNumSentClientHellos();
if (num_sent_client_hellos_ >= QuicCryptoClientStream::kMaxClientHellos)
return ERR_QUIC_HANDSHAKE_FAILED;
// The handshake was rejected statelessly, so create another connection
// to resume the handshake.
io_state_ = STATE_CONNECT;
return OK;
}
if (was_alternative_service_recently_broken_)
UMA_HISTOGRAM_BOOLEAN("Net.QuicSession.ConnectAfterBroken", rv == OK);
if (rv != OK)
return rv;
DCHECK(!factory_->HasActiveSession(key_.server_id()));
// There may well now be an active session for this IP. If so, use the
// existing session instead.
AddressList address(
session_->connection()->peer_address().impl().socket_address());
if (factory_->OnResolution(key_, address)) {
session_->connection()->CloseConnection(
QUIC_CONNECTION_IP_POOLED, "An active session exists for the given IP.",
ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
session_ = nullptr;
return OK;
}
factory_->ActivateSession(key_, session_);
return OK;
}
QuicStreamRequest::QuicStreamRequest(QuicStreamFactory* factory)
: factory_(factory) {}
QuicStreamRequest::~QuicStreamRequest() {
if (factory_ && !callback_.is_null())
factory_->CancelRequest(this);
}
int QuicStreamRequest::Request(const HostPortPair& destination,
PrivacyMode privacy_mode,
int cert_verify_flags,
const GURL& url,
base::StringPiece method,
const NetLogWithSource& net_log,
const CompletionCallback& callback) {
DCHECK(callback_.is_null());
DCHECK(factory_);
server_id_ = QuicServerId(HostPortPair::FromURL(url), privacy_mode);
int rv = factory_->Create(server_id_, destination, cert_verify_flags, url,
method, net_log, this);
if (rv == ERR_IO_PENDING) {
net_log_ = net_log;
callback_ = callback;
} else {
factory_ = nullptr;
}
if (rv == OK)
DCHECK(session_);
return rv;
}
void QuicStreamRequest::SetSession(QuicChromiumClientSession* session) {
DCHECK(session);
session_ = session->GetWeakPtr();
}
void QuicStreamRequest::OnRequestComplete(int rv) {
factory_ = nullptr;
callback_.Run(rv);
}
base::TimeDelta QuicStreamRequest::GetTimeDelayForWaitingJob() const {
if (!factory_)
return base::TimeDelta();
return factory_->GetTimeDelayForWaitingJob(server_id_);
}
std::unique_ptr<QuicHttpStream> QuicStreamRequest::CreateStream() {
if (!session_)
return nullptr;
return base::MakeUnique<QuicHttpStream>(session_);
}
std::unique_ptr<BidirectionalStreamImpl>
QuicStreamRequest::CreateBidirectionalStreamImpl() {
if (!session_)
return nullptr;
return base::MakeUnique<BidirectionalStreamQuicImpl>(session_);
}
QuicStreamFactory::QuicStreamFactory(
NetLog* net_log,
HostResolver* host_resolver,
SSLConfigService* ssl_config_service,
ClientSocketFactory* client_socket_factory,
HttpServerProperties* http_server_properties,
ProxyDelegate* proxy_delegate,
CertVerifier* cert_verifier,
CTPolicyEnforcer* ct_policy_enforcer,
ChannelIDService* channel_id_service,
TransportSecurityState* transport_security_state,
CTVerifier* cert_transparency_verifier,
SocketPerformanceWatcherFactory* socket_performance_watcher_factory,
QuicCryptoClientStreamFactory* quic_crypto_client_stream_factory,
QuicRandom* random_generator,
QuicClock* clock,
size_t max_packet_length,
const std::string& user_agent_id,
const QuicVersionVector& supported_versions,
bool always_require_handshake_confirmation,
bool disable_connection_pooling,
float load_server_info_timeout_srtt_multiplier,
bool enable_connection_racing,
bool enable_non_blocking_io,
bool disable_disk_cache,
bool prefer_aes,
int socket_receive_buffer_size,
bool delay_tcp_race,
int max_server_configs_stored_in_properties,
bool close_sessions_on_ip_change,
bool disable_quic_on_timeout_with_open_streams,
int idle_connection_timeout_seconds,
int reduced_ping_timeout_seconds,
int packet_reader_yield_after_duration_milliseconds,
bool migrate_sessions_on_network_change,
bool migrate_sessions_early,
bool allow_server_migration,
bool force_hol_blocking,
bool race_cert_verification,
bool quic_do_not_fragment,
const QuicTagVector& connection_options,
bool enable_token_binding)
: require_confirmation_(true),
net_log_(net_log),
host_resolver_(host_resolver),
client_socket_factory_(client_socket_factory),
http_server_properties_(http_server_properties),
proxy_delegate_(proxy_delegate),
transport_security_state_(transport_security_state),
cert_transparency_verifier_(cert_transparency_verifier),
quic_crypto_client_stream_factory_(quic_crypto_client_stream_factory),
random_generator_(random_generator),
clock_(clock),
max_packet_length_(max_packet_length),
clock_skew_detector_(base::TimeTicks::Now(), base::Time::Now()),
socket_performance_watcher_factory_(socket_performance_watcher_factory),
config_(InitializeQuicConfig(connection_options,
idle_connection_timeout_seconds)),
crypto_config_(base::WrapUnique(
new ProofVerifierChromium(cert_verifier,
ct_policy_enforcer,
transport_security_state,
cert_transparency_verifier))),
supported_versions_(supported_versions),
always_require_handshake_confirmation_(
always_require_handshake_confirmation),
disable_connection_pooling_(disable_connection_pooling),
load_server_info_timeout_srtt_multiplier_(
load_server_info_timeout_srtt_multiplier),
enable_connection_racing_(enable_connection_racing),
enable_non_blocking_io_(enable_non_blocking_io),
disable_disk_cache_(disable_disk_cache),
prefer_aes_(prefer_aes),
disable_quic_on_timeout_with_open_streams_(
disable_quic_on_timeout_with_open_streams),
consecutive_disabled_count_(0),
need_to_evaluate_consecutive_disabled_count_(false),
socket_receive_buffer_size_(socket_receive_buffer_size),
delay_tcp_race_(delay_tcp_race),
ping_timeout_(QuicTime::Delta::FromSeconds(kPingTimeoutSecs)),
reduced_ping_timeout_(
QuicTime::Delta::FromSeconds(reduced_ping_timeout_seconds)),
yield_after_packets_(kQuicYieldAfterPacketsRead),
yield_after_duration_(QuicTime::Delta::FromMilliseconds(
packet_reader_yield_after_duration_milliseconds)),
close_sessions_on_ip_change_(close_sessions_on_ip_change),
migrate_sessions_on_network_change_(
migrate_sessions_on_network_change &&
NetworkChangeNotifier::AreNetworkHandlesSupported()),
migrate_sessions_early_(migrate_sessions_early &&
migrate_sessions_on_network_change_),
allow_server_migration_(allow_server_migration),
force_hol_blocking_(force_hol_blocking),
race_cert_verification_(race_cert_verification),
quic_do_not_fragment_(quic_do_not_fragment),
check_persisted_supports_quic_(true),
has_initialized_data_(false),
num_push_streams_created_(0),
status_(OPEN),
task_runner_(nullptr),
ssl_config_service_(ssl_config_service),
weak_factory_(this) {
if (ssl_config_service_.get())
ssl_config_service_->AddObserver(this);
DCHECK(transport_security_state_);
DCHECK(http_server_properties_);
crypto_config_.set_user_agent_id(user_agent_id);
crypto_config_.AddCanonicalSuffix(".c.youtube.com");
crypto_config_.AddCanonicalSuffix(".ggpht.com");
crypto_config_.AddCanonicalSuffix(".googlevideo.com");
crypto_config_.AddCanonicalSuffix(".googleusercontent.com");
// TODO(rtenneti): http://crbug.com/487355. Temporary fix for b/20760730 until
// channel_id_service is supported in cronet.
if (channel_id_service) {
crypto_config_.SetChannelIDSource(
new ChannelIDSourceChromium(channel_id_service));
}
if (enable_token_binding && channel_id_service)
crypto_config_.tb_key_params.push_back(kTB10);
crypto::EnsureOpenSSLInit();
bool has_aes_hardware_support = !!EVP_has_aes_hardware();
UMA_HISTOGRAM_BOOLEAN("Net.QuicSession.PreferAesGcm",
has_aes_hardware_support);
if (has_aes_hardware_support || prefer_aes_)
crypto_config_.PreferAesGcm();
// When disk cache is used to store the server configs, HttpCache code calls
// |set_quic_server_info_factory| if |quic_server_info_factory_| wasn't
// created.
if (max_server_configs_stored_in_properties > 0) {
quic_server_info_factory_.reset(
new PropertiesBasedQuicServerInfoFactory(http_server_properties_));
}
// migrate_sessions_early should only be set to true if
// migrate_sessions_on_network_change is set to true.
if (migrate_sessions_early)
DCHECK(migrate_sessions_on_network_change);
// close_sessions_on_ip_change and migrate_sessions_on_network_change should
// never be simultaneously set to true.
DCHECK(!(close_sessions_on_ip_change && migrate_sessions_on_network_change));
if (migrate_sessions_on_network_change_) {
NetworkChangeNotifier::AddNetworkObserver(this);
} else if (close_sessions_on_ip_change_) {
NetworkChangeNotifier::AddIPAddressObserver(this);
}
}
QuicStreamFactory::~QuicStreamFactory() {
CloseAllSessions(ERR_ABORTED, QUIC_CONNECTION_CANCELLED);
while (!all_sessions_.empty()) {
delete all_sessions_.begin()->first;
all_sessions_.erase(all_sessions_.begin());
}
active_jobs_.clear();
while (!active_cert_verifier_jobs_.empty())
active_cert_verifier_jobs_.erase(active_cert_verifier_jobs_.begin());
if (ssl_config_service_.get())
ssl_config_service_->RemoveObserver(this);
if (migrate_sessions_on_network_change_) {
NetworkChangeNotifier::RemoveNetworkObserver(this);
} else if (close_sessions_on_ip_change_) {
NetworkChangeNotifier::RemoveIPAddressObserver(this);
}
}
void QuicStreamFactory::set_require_confirmation(bool require_confirmation) {
require_confirmation_ = require_confirmation;
if (!(local_address_ == IPEndPoint())) {
http_server_properties_->SetSupportsQuic(!require_confirmation,
local_address_.address());
}
}
bool QuicStreamFactory::ZeroRTTEnabledFor(const QuicServerId& quic_server_id) {
return !(require_confirmation_ || CryptoConfigCacheIsEmpty(quic_server_id));
}
base::TimeDelta QuicStreamFactory::GetTimeDelayForWaitingJob(
const QuicServerId& server_id) {
if (!delay_tcp_race_ || require_confirmation_)
return base::TimeDelta();
int64_t srtt =
1.5 * GetServerNetworkStatsSmoothedRttInMicroseconds(server_id);
// Picked 300ms based on mean time from
// Net.QuicSession.HostResolution.HandshakeConfirmedTime histogram.
const int kDefaultRTT = 300 * kNumMicrosPerMilli;
if (!srtt)
srtt = kDefaultRTT;
return base::TimeDelta::FromMicroseconds(srtt);
}
void QuicStreamFactory::set_quic_server_info_factory(
QuicServerInfoFactory* quic_server_info_factory) {
quic_server_info_factory_.reset(quic_server_info_factory);
}
bool QuicStreamFactory::CanUseExistingSession(const QuicServerId& server_id,
const HostPortPair& destination) {
// TODO(zhongyi): delete active_sessions_.empty() checks once the
// android crash issue(crbug.com/498823) is resolved.
if (active_sessions_.empty())
return false;
if (base::ContainsKey(active_sessions_, server_id))
return true;
for (const auto& key_value : active_sessions_) {
QuicChromiumClientSession* session = key_value.second;
if (destination.Equals(all_sessions_[session].destination()) &&
session->CanPool(server_id.host(), server_id.privacy_mode())) {
return true;
}
}
return false;
}
int QuicStreamFactory::Create(const QuicServerId& server_id,
const HostPortPair& destination,
int cert_verify_flags,
const GURL& url,
base::StringPiece method,
const NetLogWithSource& net_log,
QuicStreamRequest* request) {
if (clock_skew_detector_.ClockSkewDetected(base::TimeTicks::Now(),
base::Time::Now())) {
while (!active_sessions_.empty()) {
QuicChromiumClientSession* session = active_sessions_.begin()->second;
OnSessionGoingAway(session);
// TODO(rch): actually close the session?
}
}
DCHECK(server_id.host_port_pair().Equals(HostPortPair::FromURL(url)));
// Enforce session affinity for promised streams.
QuicClientPromisedInfo* promised =
push_promise_index_.GetPromised(url.spec());
if (promised) {
QuicChromiumClientSession* session =
static_cast<QuicChromiumClientSession*>(promised->session());
DCHECK(session);
if (session->server_id().privacy_mode() == server_id.privacy_mode()) {
request->SetSession(session);
++num_push_streams_created_;
return OK;
}
// This should happen extremely rarely (if ever), but if somehow a
// request comes in with a mismatched privacy mode, consider the
// promise borked.
promised->Cancel();
}
// Use active session for |server_id| if such exists.
// TODO(rtenneti): crbug.com/498823 - delete active_sessions_.empty() checks.
if (!active_sessions_.empty()) {
SessionMap::iterator it = active_sessions_.find(server_id);
if (it != active_sessions_.end()) {
QuicChromiumClientSession* session = it->second;
request->SetSession(session);
return OK;
}
}
// Associate with active job to |server_id| if such exists.
if (HasActiveJob(server_id)) {
active_requests_[request] = server_id;
job_requests_map_[server_id].insert(request);
return ERR_IO_PENDING;
}
// Pool to active session to |destination| if possible.
if (!active_sessions_.empty() && !disable_connection_pooling_) {
for (const auto& key_value : active_sessions_) {
QuicChromiumClientSession* session = key_value.second;
if (destination.Equals(all_sessions_[session].destination()) &&
session->CanPool(server_id.host(), server_id.privacy_mode())) {
request->SetSession(session);
return OK;
}
}
}
// TODO(rtenneti): |task_runner_| is used by the Job. Initialize task_runner_
// in the constructor after WebRequestActionWithThreadsTest.* tests are fixed.
if (!task_runner_)
task_runner_ = base::ThreadTaskRunnerHandle::Get().get();
QuicServerInfo* quic_server_info = nullptr;
if (quic_server_info_factory_.get()) {
bool load_from_disk_cache = !disable_disk_cache_;
MaybeInitialize();
if (!base::ContainsKey(quic_supported_servers_at_startup_, destination)) {
// If there is no entry for QUIC, consider that as a new server and
// don't wait for Cache thread to load the data for that server.
load_from_disk_cache = false;
}
if (load_from_disk_cache && CryptoConfigCacheIsEmpty(server_id))
quic_server_info = quic_server_info_factory_->GetForServer(server_id);
}
ignore_result(StartCertVerifyJob(server_id, cert_verify_flags, net_log));
QuicSessionKey key(destination, server_id);
std::unique_ptr<Job> job = base::MakeUnique<Job>(
this, host_resolver_, key, WasQuicRecentlyBroken(server_id),
cert_verify_flags, quic_server_info, net_log);
int rv = job->Run(base::Bind(&QuicStreamFactory::OnJobComplete,
base::Unretained(this), job.get()));
if (rv == ERR_IO_PENDING) {
active_requests_[request] = server_id;
job_requests_map_[server_id].insert(request);
Job* job_ptr = job.get();
active_jobs_[server_id][job_ptr] = std::move(job);
return rv;
}
if (rv == OK) {
// TODO(rtenneti): crbug.com/498823 - revert active_sessions_.empty()
// related changes.
if (active_sessions_.empty())
return ERR_QUIC_PROTOCOL_ERROR;
SessionMap::iterator it = active_sessions_.find(server_id);
DCHECK(it != active_sessions_.end());
if (it == active_sessions_.end())
return ERR_QUIC_PROTOCOL_ERROR;
QuicChromiumClientSession* session = it->second;
request->SetSession(session);
}
return rv;
}
QuicStreamFactory::QuicSessionKey::QuicSessionKey(
const HostPortPair& destination,
const QuicServerId& server_id)
: destination_(destination), server_id_(server_id) {}
bool QuicStreamFactory::QuicSessionKey::operator<(
const QuicSessionKey& other) const {
return std::tie(destination_, server_id_) <
std::tie(other.destination_, other.server_id_);
}
bool QuicStreamFactory::QuicSessionKey::operator==(
const QuicSessionKey& other) const {
return destination_.Equals(other.destination_) &&
server_id_ == other.server_id_;
}
void QuicStreamFactory::CreateAuxilaryJob(const QuicSessionKey& key,
int cert_verify_flags,
const NetLogWithSource& net_log) {
Job* aux_job =
new Job(this, host_resolver_, key, WasQuicRecentlyBroken(key.server_id()),
cert_verify_flags, nullptr, net_log);
active_jobs_[key.server_id()][aux_job] = base::WrapUnique(aux_job);
task_runner_->PostTask(FROM_HERE,
base::Bind(&QuicStreamFactory::Job::RunAuxilaryJob,
aux_job->GetWeakPtr()));
}
bool QuicStreamFactory::OnResolution(const QuicSessionKey& key,
const AddressList& address_list) {
const QuicServerId& server_id(key.server_id());
DCHECK(!HasActiveSession(server_id));
if (disable_connection_pooling_)
return false;
for (const IPEndPoint& address : address_list) {
if (!base::ContainsKey(ip_aliases_, address))
continue;
const SessionSet& sessions = ip_aliases_[address];
for (QuicChromiumClientSession* session : sessions) {
if (!session->CanPool(server_id.host(), server_id.privacy_mode()))
continue;
active_sessions_[server_id] = session;
session_aliases_[session].insert(key);
return true;
}
}
return false;
}
void QuicStreamFactory::OnJobComplete(Job* job, int rv) {
// Copy |server_id|, because |job| might be destroyed before this method
// returns.
const QuicServerId server_id(job->key().server_id());
if (rv != OK) {
JobSet* jobs = &(active_jobs_[server_id]);
if (jobs->size() > 1) {
// If there is another pending job, then we can delete this job and let
// the other job handle the request.
job->Cancel();
jobs->erase(job);
return;
}
}
if (rv == OK) {
if (!always_require_handshake_confirmation_)
set_require_confirmation(false);
if (!job_requests_map_[server_id].empty()) {
SessionMap::iterator session_it = active_sessions_.find(server_id);
DCHECK(session_it != active_sessions_.end());
QuicChromiumClientSession* session = session_it->second;
for (QuicStreamRequest* request : job_requests_map_[server_id]) {
DCHECK(request->server_id() == server_id);
// Do not notify |request| yet.
request->SetSession(session);
}
}
}
while (!job_requests_map_[server_id].empty()) {
RequestSet::iterator it = job_requests_map_[server_id].begin();
QuicStreamRequest* request = *it;
job_requests_map_[server_id].erase(it);
active_requests_.erase(request);
// Even though we're invoking callbacks here, we don't need to worry
// about |this| being deleted, because the factory is owned by the
// profile which can not be deleted via callbacks.
request->OnRequestComplete(rv);
}
for (auto& other_job : active_jobs_[server_id]) {
if (other_job.first != job)
other_job.first->Cancel();
}
active_jobs_[server_id].clear();
active_jobs_.erase(server_id);
job_requests_map_.erase(server_id);
}
void QuicStreamFactory::OnCertVerifyJobComplete(CertVerifierJob* job, int rv) {
active_cert_verifier_jobs_.erase(job->server_id());
}
std::unique_ptr<QuicHttpStream> QuicStreamFactory::CreateFromSession(
QuicChromiumClientSession* session) {
return std::unique_ptr<QuicHttpStream>(
new QuicHttpStream(session->GetWeakPtr()));
}
bool QuicStreamFactory::IsQuicDisabled() const {
return status_ != OPEN;
}
bool QuicStreamFactory::OnHandshakeConfirmed(
QuicChromiumClientSession* session) {
if (!IsQuicDisabled())
return false;
session->CloseSessionOnErrorAndNotifyFactoryLater(
ERR_ABORTED, QUIC_TIMEOUTS_WITH_OPEN_STREAMS);
return true;
}
void QuicStreamFactory::OnTcpJobCompleted(bool succeeded) {
if (status_ != CLOSED)
return;
// If QUIC connections are failing while TCP connections are working,
// then stop using QUIC. On the other hand if both QUIC and TCP are
// failing, then attempt to use QUIC again.
if (succeeded) {
status_ = DISABLED;
return;
}
status_ = OPEN;
}
void QuicStreamFactory::OnIdleSession(QuicChromiumClientSession* session) {}
void QuicStreamFactory::OnSessionGoingAway(QuicChromiumClientSession* session) {
const AliasSet& aliases = session_aliases_[session];
for (AliasSet::const_iterator it = aliases.begin(); it != aliases.end();
++it) {
const QuicServerId& server_id = it->server_id();
DCHECK(active_sessions_.count(server_id));
DCHECK_EQ(session, active_sessions_[server_id]);
// Track sessions which have recently gone away so that we can disable
// port suggestions.
if (session->goaway_received())
gone_away_aliases_.insert(*it);
active_sessions_.erase(server_id);
ProcessGoingAwaySession(session, server_id, true);
}
ProcessGoingAwaySession(session, all_sessions_[session].server_id(), false);
if (!aliases.empty()) {
DCHECK(base::ContainsKey(session_peer_ip_, session));
const IPEndPoint peer_address = session_peer_ip_[session];
ip_aliases_[peer_address].erase(session);
if (ip_aliases_[peer_address].empty())
ip_aliases_.erase(peer_address);
session_peer_ip_.erase(session);
}
session_aliases_.erase(session);
}
void QuicStreamFactory::OnSessionClosed(QuicChromiumClientSession* session) {
DCHECK_EQ(0u, session->GetNumActiveStreams());
OnSessionGoingAway(session);
delete session;
all_sessions_.erase(session);
}
void QuicStreamFactory::OnTimeoutWithOpenStreams() {
// Reduce PING timeout when connection times out with open stream.
if (ping_timeout_ > reduced_ping_timeout_) {
ping_timeout_ = reduced_ping_timeout_;
}
if (disable_quic_on_timeout_with_open_streams_) {
if (status_ == OPEN) {
task_runner_->PostDelayedTask(
FROM_HERE, base::Bind(&QuicStreamFactory::OpenFactory,
weak_factory_.GetWeakPtr()),
base::TimeDelta::FromSeconds(kDisableQuicTimeoutSecs *
(1 << consecutive_disabled_count_)));
consecutive_disabled_count_++;
need_to_evaluate_consecutive_disabled_count_ = true;
}
status_ = CLOSED;
}
}
void QuicStreamFactory::CancelRequest(QuicStreamRequest* request) {
RequestMap::iterator request_it = active_requests_.find(request);
DCHECK(request_it != active_requests_.end());
const QuicServerId& server_id = request_it->second;
job_requests_map_[server_id].erase(request);
active_requests_.erase(request_it);
}
void QuicStreamFactory::CloseAllSessions(int error, QuicErrorCode quic_error) {
UMA_HISTOGRAM_SPARSE_SLOWLY("Net.QuicSession.CloseAllSessionsError", -error);
while (!active_sessions_.empty()) {
size_t initial_size = active_sessions_.size();
active_sessions_.begin()->second->CloseSessionOnError(error, quic_error);
DCHECK_NE(initial_size, active_sessions_.size());
}
while (!all_sessions_.empty()) {
size_t initial_size = all_sessions_.size();
all_sessions_.begin()->first->CloseSessionOnError(error, quic_error);
DCHECK_NE(initial_size, all_sessions_.size());
}
DCHECK(all_sessions_.empty());
}
std::unique_ptr<base::Value> QuicStreamFactory::QuicStreamFactoryInfoToValue()
const {
std::unique_ptr<base::ListValue> list(new base::ListValue());
for (SessionMap::const_iterator it = active_sessions_.begin();
it != active_sessions_.end(); ++it) {
const QuicServerId& server_id = it->first;
QuicChromiumClientSession* session = it->second;
const AliasSet& aliases = session_aliases_.find(session)->second;
// Only add a session to the list once.
if (server_id == aliases.begin()->server_id()) {
std::set<HostPortPair> hosts;
for (AliasSet::const_iterator alias_it = aliases.begin();
alias_it != aliases.end(); ++alias_it) {
hosts.insert(alias_it->server_id().host_port_pair());
}
list->Append(session->GetInfoAsValue(hosts));
}
}
return std::move(list);
}
void QuicStreamFactory::ClearCachedStatesInCryptoConfig(
const base::Callback<bool(const GURL&)>& origin_filter) {
ServerIdOriginFilter filter(origin_filter);
crypto_config_.ClearCachedStates(filter);
}
void QuicStreamFactory::OnIPAddressChanged() {
status_ = OPEN;
CloseAllSessions(ERR_NETWORK_CHANGED, QUIC_IP_ADDRESS_CHANGED);
set_require_confirmation(true);
}
void QuicStreamFactory::OnNetworkConnected(NetworkHandle network) {
status_ = OPEN;
ScopedConnectionMigrationEventLog scoped_event_log(net_log_,
"OnNetworkConnected");
QuicStreamFactory::SessionIdMap::iterator it = all_sessions_.begin();
// Sessions may be deleted while iterating through the map.
while (it != all_sessions_.end()) {
QuicChromiumClientSession* session = it->first;
++it;
session->OnNetworkConnected(network, scoped_event_log.net_log());
}
}
void QuicStreamFactory::OnNetworkMadeDefault(NetworkHandle network) {
ScopedConnectionMigrationEventLog scoped_event_log(net_log_,
"OnNetworkMadeDefault");
DCHECK_NE(NetworkChangeNotifier::kInvalidNetworkHandle, network);
MaybeMigrateOrCloseSessions(network, /*close_if_cannot_migrate=*/false,
scoped_event_log.net_log());
set_require_confirmation(true);
}
void QuicStreamFactory::OnNetworkDisconnected(NetworkHandle network) {
ScopedConnectionMigrationEventLog scoped_event_log(net_log_,
"OnNetworkDisconnected");
NetworkHandle new_network = FindAlternateNetwork(network);
MaybeMigrateOrCloseSessions(new_network, /*close_if_cannot_migrate=*/true,
scoped_event_log.net_log());
}
// This method is expected to only be called when migrating from Cellular to
// WiFi on Android, and should always be preceded by OnNetworkMadeDefault().
void QuicStreamFactory::OnNetworkSoonToDisconnect(NetworkHandle network) {}
NetworkHandle QuicStreamFactory::FindAlternateNetwork(
NetworkHandle old_network) {
// Find a new network that sessions bound to |old_network| can be migrated to.
NetworkChangeNotifier::NetworkList network_list;
NetworkChangeNotifier::GetConnectedNetworks(&network_list);
for (NetworkHandle new_network : network_list) {
if (new_network != old_network)
return new_network;
}
return NetworkChangeNotifier::kInvalidNetworkHandle;
}
void QuicStreamFactory::MaybeMigrateOrCloseSessions(
NetworkHandle new_network,
bool close_if_cannot_migrate,
const NetLogWithSource& net_log) {
QuicStreamFactory::SessionIdMap::iterator it = all_sessions_.begin();
while (it != all_sessions_.end()) {
QuicChromiumClientSession* session = it->first;
++it;
// If session is already bound to |new_network|, move on.
if (session->GetDefaultSocket()->GetBoundNetwork() == new_network) {
HistogramAndLogMigrationFailure(
net_log, MIGRATION_STATUS_ALREADY_MIGRATED, session->connection_id(),
"Already bound to new network");
continue;
}
// Close idle sessions.
if (session->GetNumActiveStreams() == 0) {
HistogramAndLogMigrationFailure(
net_log, MIGRATION_STATUS_NO_MIGRATABLE_STREAMS,
session->connection_id(), "No active sessions");
session->CloseSessionOnError(
ERR_NETWORK_CHANGED, QUIC_CONNECTION_MIGRATION_NO_MIGRATABLE_STREAMS);
continue;
}
// If session has active streams, mark it as going away.
OnSessionGoingAway(session);
// Do not migrate sessions where connection migration is disabled.
if (session->config()->DisableConnectionMigration()) {
HistogramAndLogMigrationFailure(net_log, MIGRATION_STATUS_DISABLED,
session->connection_id(),
"Migration disabled");
if (close_if_cannot_migrate) {
session->CloseSessionOnError(ERR_NETWORK_CHANGED,
QUIC_IP_ADDRESS_CHANGED);
}
continue;
}
// Do not migrate sessions with non-migratable streams.
if (session->HasNonMigratableStreams()) {
HistogramAndLogMigrationFailure(
net_log, MIGRATION_STATUS_NON_MIGRATABLE_STREAM,
session->connection_id(), "Non-migratable stream");
if (close_if_cannot_migrate) {
session->CloseSessionOnError(
ERR_NETWORK_CHANGED,
QUIC_CONNECTION_MIGRATION_NON_MIGRATABLE_STREAM);
}
continue;
}
// No new network was found. Notify session, so it can wait for a
// new network.
if (new_network == NetworkChangeNotifier::kInvalidNetworkHandle) {
session->OnNoNewNetwork();
continue;
}
MigrateSessionToNewNetwork(session, new_network,
/*close_session_on_error=*/true, net_log);
}
}
MigrationResult QuicStreamFactory::MaybeMigrateSingleSession(
QuicChromiumClientSession* session,
MigrationCause migration_cause) {
ScopedConnectionMigrationEventLog scoped_event_log(
net_log_,
migration_cause == EARLY_MIGRATION ? "EarlyMigration" : "WriteError");
if (!migrate_sessions_on_network_change_ ||
(migration_cause == EARLY_MIGRATION && !migrate_sessions_early_) ||
session->HasNonMigratableStreams() ||
session->config()->DisableConnectionMigration()) {
HistogramAndLogMigrationFailure(
scoped_event_log.net_log(), MIGRATION_STATUS_DISABLED,
session->connection_id(), "Migration disabled");
return MigrationResult::FAILURE;
}
NetworkHandle new_network =
FindAlternateNetwork(session->GetDefaultSocket()->GetBoundNetwork());
if (new_network == NetworkChangeNotifier::kInvalidNetworkHandle) {
// No alternate network found.
HistogramAndLogMigrationFailure(
scoped_event_log.net_log(), MIGRATION_STATUS_NO_ALTERNATE_NETWORK,
session->connection_id(), "No alternate network found");
return MigrationResult::NO_NEW_NETWORK;
}
OnSessionGoingAway(session);
return MigrateSessionToNewNetwork(session, new_network,
migration_cause != WRITE_ERROR,
scoped_event_log.net_log());
}
void QuicStreamFactory::MigrateSessionToNewPeerAddress(
QuicChromiumClientSession* session,
IPEndPoint peer_address,
const NetLogWithSource& net_log) {
if (!allow_server_migration_)
return;
IPEndPoint old_address;
session->GetDefaultSocket()->GetPeerAddress(&old_address);
DCHECK_EQ(old_address.GetFamily(), peer_address.GetFamily());
// Specifying kInvalidNetworkHandle for the |network| parameter
// causes the session to use the default network for the new socket.
MigrateSessionInner(session, peer_address,
NetworkChangeNotifier::kInvalidNetworkHandle,
/*close_session_on_error=*/true, net_log);
}
MigrationResult QuicStreamFactory::MigrateSessionToNewNetwork(
QuicChromiumClientSession* session,
NetworkHandle network,
bool close_session_on_error,
const NetLogWithSource& net_log) {
return MigrateSessionInner(
session, session->connection()->peer_address().impl().socket_address(),
network, close_session_on_error, net_log);
}
MigrationResult QuicStreamFactory::MigrateSessionInner(
QuicChromiumClientSession* session,
IPEndPoint peer_address,
NetworkHandle network,
bool close_session_on_error,
const NetLogWithSource& net_log) {
// Use OS-specified port for socket (DEFAULT_BIND) instead of
// using the PortSuggester since the connection is being migrated
// and not being newly created.
std::unique_ptr<DatagramClientSocket> socket(
client_socket_factory_->CreateDatagramClientSocket(
DatagramSocket::DEFAULT_BIND, RandIntCallback(),
session->net_log().net_log(), session->net_log().source()));
if (ConfigureSocket(socket.get(), peer_address, network) != OK) {
HistogramAndLogMigrationFailure(net_log, MIGRATION_STATUS_INTERNAL_ERROR,
session->connection_id(),
"Socket configuration failed");
if (close_session_on_error) {
session->CloseSessionOnError(ERR_NETWORK_CHANGED, QUIC_INTERNAL_ERROR);
}
return MigrationResult::FAILURE;
}
std::unique_ptr<QuicChromiumPacketReader> new_reader(
new QuicChromiumPacketReader(socket.get(), clock_.get(), session,
yield_after_packets_, yield_after_duration_,
session->net_log()));
std::unique_ptr<QuicChromiumPacketWriter> new_writer(
new QuicChromiumPacketWriter(socket.get()));
new_writer->set_delegate(session);
if (!session->MigrateToSocket(std::move(socket), std::move(new_reader),
std::move(new_writer))) {
HistogramAndLogMigrationFailure(net_log, MIGRATION_STATUS_TOO_MANY_CHANGES,
session->connection_id(),
"Too many migrations");
if (close_session_on_error) {
session->CloseSessionOnError(ERR_NETWORK_CHANGED,
QUIC_CONNECTION_MIGRATION_TOO_MANY_CHANGES);
}
return MigrationResult::FAILURE;
}
HistogramMigrationStatus(MIGRATION_STATUS_SUCCESS);
net_log.AddEvent(NetLogEventType::QUIC_CONNECTION_MIGRATION_SUCCESS,
base::Bind(&NetLogQuicConnectionMigrationSuccessCallback,
session->connection_id()));
return MigrationResult::SUCCESS;
}
void QuicStreamFactory::OnSSLConfigChanged() {
CloseAllSessions(ERR_CERT_DATABASE_CHANGED, QUIC_CONNECTION_CANCELLED);
}
void QuicStreamFactory::OnCertDBChanged(const X509Certificate* cert) {
// We should flush the sessions if we removed trust from a
// cert, because a previously trusted server may have become
// untrusted.
//
// We should not flush the sessions if we added trust to a cert.
//
// Since the OnCertDBChanged method doesn't tell us what
// kind of change it is, we have to flush the socket
// pools to be safe.
CloseAllSessions(ERR_CERT_DATABASE_CHANGED, QUIC_CONNECTION_CANCELLED);
}
bool QuicStreamFactory::HasActiveSession(const QuicServerId& server_id) const {
// TODO(rtenneti): crbug.com/498823 - delete active_sessions_.empty() check.
if (active_sessions_.empty())
return false;
return base::ContainsKey(active_sessions_, server_id);
}
bool QuicStreamFactory::HasActiveJob(const QuicServerId& server_id) const {
return base::ContainsKey(active_jobs_, server_id);
}
bool QuicStreamFactory::HasActiveCertVerifierJob(
const QuicServerId& server_id) const {
return base::ContainsKey(active_cert_verifier_jobs_, server_id);
}
int QuicStreamFactory::ConfigureSocket(DatagramClientSocket* socket,
IPEndPoint addr,
NetworkHandle network) {
if (enable_non_blocking_io_)
socket->UseNonBlockingIO();
int rv;
if (migrate_sessions_on_network_change_) {
// If caller leaves network unspecified, use current default network.
if (network == NetworkChangeNotifier::kInvalidNetworkHandle) {
rv = socket->ConnectUsingDefaultNetwork(addr);
} else {
rv = socket->ConnectUsingNetwork(network, addr);
}
} else {
rv = socket->Connect(addr);
}
if (rv != OK) {
HistogramCreateSessionFailure(CREATION_ERROR_CONNECTING_SOCKET);
return rv;
}
rv = socket->SetReceiveBufferSize(socket_receive_buffer_size_);
if (rv != OK) {
HistogramCreateSessionFailure(CREATION_ERROR_SETTING_RECEIVE_BUFFER);
return rv;
}
if (quic_do_not_fragment_) {
rv = socket->SetDoNotFragment();
// SetDoNotFragment is not implemented on all platforms, so ignore errors.
if (rv != OK && rv != ERR_NOT_IMPLEMENTED) {
HistogramCreateSessionFailure(CREATION_ERROR_SETTING_DO_NOT_FRAGMENT);
return rv;
}
}
// Set a buffer large enough to contain the initial CWND's worth of packet
// to work around the problem with CHLO packets being sent out with the
// wrong encryption level, when the send buffer is full.
rv = socket->SetSendBufferSize(kMaxPacketSize * 20);
if (rv != OK) {
HistogramCreateSessionFailure(CREATION_ERROR_SETTING_SEND_BUFFER);
return rv;
}
socket->GetLocalAddress(&local_address_);
if (check_persisted_supports_quic_) {
check_persisted_supports_quic_ = false;
IPAddress last_address;
if (http_server_properties_->GetSupportsQuic(&last_address) &&
last_address == local_address_.address()) {
require_confirmation_ = false;
}
}
return OK;
}
int QuicStreamFactory::CreateSession(
const QuicSessionKey& key,
int cert_verify_flags,
std::unique_ptr<QuicServerInfo> server_info,
const AddressList& address_list,
base::TimeTicks dns_resolution_start_time,
base::TimeTicks dns_resolution_end_time,
const NetLogWithSource& net_log,
QuicChromiumClientSession** session) {
if (need_to_evaluate_consecutive_disabled_count_) {
task_runner_->PostDelayedTask(
FROM_HERE,
base::Bind(&QuicStreamFactory::MaybeClearConsecutiveDisabledCount,
weak_factory_.GetWeakPtr()),
base::TimeDelta::FromSeconds(kDisableQuicTimeoutSecs));
need_to_evaluate_consecutive_disabled_count_ = false;
}
TRACE_EVENT0(kNetTracingCategory, "QuicStreamFactory::CreateSession");
IPEndPoint addr = *address_list.begin();
const QuicServerId& server_id = key.server_id();
DatagramSocket::BindType bind_type = DatagramSocket::DEFAULT_BIND;
std::unique_ptr<DatagramClientSocket> socket(
client_socket_factory_->CreateDatagramClientSocket(
bind_type, RandIntCallback(), net_log.net_log(), net_log.source()));
// Passing in kInvalidNetworkHandle binds socket to default network.
int rv = ConfigureSocket(socket.get(), addr,
NetworkChangeNotifier::kInvalidNetworkHandle);
if (rv != OK)
return rv;
if (!helper_.get()) {
helper_.reset(
new QuicChromiumConnectionHelper(clock_.get(), random_generator_));
}
if (!alarm_factory_.get()) {
alarm_factory_.reset(new QuicChromiumAlarmFactory(
base::ThreadTaskRunnerHandle::Get().get(), clock_.get()));
}
QuicConnectionId connection_id = random_generator_->RandUint64();
InitializeCachedStateInCryptoConfig(server_id, server_info, &connection_id);
QuicChromiumPacketWriter* writer = new QuicChromiumPacketWriter(socket.get());
QuicConnection* connection = new QuicConnection(
connection_id, QuicSocketAddress(QuicSocketAddressImpl(addr)),
helper_.get(), alarm_factory_.get(), writer, true /* owns_writer */,
Perspective::IS_CLIENT, supported_versions_);
connection->set_ping_timeout(ping_timeout_);
connection->SetMaxPacketLength(max_packet_length_);
QuicConfig config = config_;
config.SetSocketReceiveBufferToSend(socket_receive_buffer_size_);
config.set_max_undecryptable_packets(kMaxUndecryptablePackets);
config.SetInitialSessionFlowControlWindowToSend(
kQuicSessionMaxRecvWindowSize);
config.SetInitialStreamFlowControlWindowToSend(kQuicStreamMaxRecvWindowSize);
int64_t srtt = GetServerNetworkStatsSmoothedRttInMicroseconds(server_id);
if (srtt > 0)
config.SetInitialRoundTripTimeUsToSend(static_cast<uint32_t>(srtt));
config.SetBytesForConnectionIdToSend(0);
if (force_hol_blocking_)
config.SetForceHolBlocking();
if (quic_server_info_factory_.get() && !server_info) {
// Start the disk cache loading so that we can persist the newer QUIC server
// information and/or inform the disk cache that we have reused
// |server_info|.
server_info.reset(quic_server_info_factory_->GetForServer(server_id));
server_info->Start();
}
// Use the factory to create a new socket performance watcher, and pass the
// ownership to QuicChromiumClientSession.
std::unique_ptr<SocketPerformanceWatcher> socket_performance_watcher;
if (socket_performance_watcher_factory_) {
socket_performance_watcher =
socket_performance_watcher_factory_->CreateSocketPerformanceWatcher(
SocketPerformanceWatcherFactory::PROTOCOL_QUIC);
}
*session = new QuicChromiumClientSession(
connection, std::move(socket), this, quic_crypto_client_stream_factory_,
clock_.get(), transport_security_state_, std::move(server_info),
server_id, yield_after_packets_, yield_after_duration_, cert_verify_flags,
config, &crypto_config_, network_connection_.GetDescription(),
dns_resolution_start_time, dns_resolution_end_time, &push_promise_index_,
task_runner_, std::move(socket_performance_watcher), net_log.net_log());
all_sessions_[*session] = key; // owning pointer
writer->set_delegate(*session);
(*session)->Initialize();
bool closed_during_initialize = !base::ContainsKey(all_sessions_, *session) ||
!(*session)->connection()->connected();
UMA_HISTOGRAM_BOOLEAN("Net.QuicSession.ClosedDuringInitializeSession",
closed_during_initialize);
if (closed_during_initialize) {
DLOG(DFATAL) << "Session closed during initialize";
*session = nullptr;
return ERR_CONNECTION_CLOSED;
}
return OK;
}
void QuicStreamFactory::ActivateSession(const QuicSessionKey& key,
QuicChromiumClientSession* session) {
const QuicServerId& server_id(key.server_id());
DCHECK(!HasActiveSession(server_id));
UMA_HISTOGRAM_COUNTS("Net.QuicActiveSessions", active_sessions_.size());
active_sessions_[server_id] = session;
session_aliases_[session].insert(key);
const IPEndPoint peer_address =
session->connection()->peer_address().impl().socket_address();
DCHECK(!base::ContainsKey(ip_aliases_[peer_address], session));
ip_aliases_[peer_address].insert(session);
DCHECK(!base::ContainsKey(session_peer_ip_, session));
session_peer_ip_[session] = peer_address;
}
int64_t QuicStreamFactory::GetServerNetworkStatsSmoothedRttInMicroseconds(
const QuicServerId& server_id) const {
url::SchemeHostPort server("https", server_id.host_port_pair().host(),
server_id.host_port_pair().port());
const ServerNetworkStats* stats =
http_server_properties_->GetServerNetworkStats(server);
if (stats == nullptr)
return 0;
return stats->srtt.InMicroseconds();
}
bool QuicStreamFactory::WasQuicRecentlyBroken(
const QuicServerId& server_id) const {
const AlternativeService alternative_service(kProtoQUIC,
server_id.host_port_pair());
return http_server_properties_->WasAlternativeServiceRecentlyBroken(
alternative_service);
}
bool QuicStreamFactory::CryptoConfigCacheIsEmpty(
const QuicServerId& server_id) {
QuicCryptoClientConfig::CachedState* cached =
crypto_config_.LookupOrCreate(server_id);
return cached->IsEmpty();
}
QuicAsyncStatus QuicStreamFactory::StartCertVerifyJob(
const QuicServerId& server_id,
int cert_verify_flags,
const NetLogWithSource& net_log) {
if (!race_cert_verification_)
return QUIC_FAILURE;
QuicCryptoClientConfig::CachedState* cached =
crypto_config_.LookupOrCreate(server_id);
if (!cached || cached->certs().empty() ||
HasActiveCertVerifierJob(server_id)) {
return QUIC_FAILURE;
}
std::unique_ptr<CertVerifierJob> cert_verifier_job(
new CertVerifierJob(server_id, cert_verify_flags, net_log));
QuicAsyncStatus status = cert_verifier_job->Run(
&crypto_config_,
base::Bind(&QuicStreamFactory::OnCertVerifyJobComplete,
base::Unretained(this), cert_verifier_job.get()));
if (status == QUIC_PENDING)
active_cert_verifier_jobs_[server_id] = std::move(cert_verifier_job);
return status;
}
void QuicStreamFactory::InitializeCachedStateInCryptoConfig(
const QuicServerId& server_id,
const std::unique_ptr<QuicServerInfo>& server_info,
QuicConnectionId* connection_id) {
QuicCryptoClientConfig::CachedState* cached =
crypto_config_.LookupOrCreate(server_id);
if (cached->has_server_designated_connection_id())
*connection_id = cached->GetNextServerDesignatedConnectionId();
if (!cached->IsEmpty())
return;
// |server_info| will be NULL, if a non-empty server config already exists in
// the memory cache.
if (!server_info)
return;
// TODO(rtenneti): Delete the following histogram after collecting stats.
// If the AlternativeServiceMap contained an entry for this host, check if
// the disk cache contained an entry for it.
if (base::ContainsKey(quic_supported_servers_at_startup_,
server_id.host_port_pair())) {
UMA_HISTOGRAM_BOOLEAN("Net.QuicServerInfo.ExpectConfigMissingFromDiskCache",
server_info->state().server_config.empty());
}
cached->Initialize(server_info->state().server_config,
server_info->state().source_address_token,
server_info->state().certs, server_info->state().cert_sct,
server_info->state().chlo_hash,
server_info->state().server_config_sig, clock_->WallNow(),
QuicWallTime::Zero());
}
void QuicStreamFactory::MaybeInitialize() {
// We don't initialize data from HttpServerProperties in the constructor
// because HttpServerProperties has not yet initialized. We're guaranteed
// HttpServerProperties has been initialized by the first time a request is
// made.
if (has_initialized_data_)
return;
has_initialized_data_ = true;
// Query the proxy delegate for the default alternative proxy server.
ProxyServer default_alternative_proxy_server =
proxy_delegate_ ? proxy_delegate_->GetDefaultAlternativeProxy()
: ProxyServer();
if (default_alternative_proxy_server.is_quic()) {
quic_supported_servers_at_startup_.insert(
default_alternative_proxy_server.host_port_pair());
}
for (const std::pair<const url::SchemeHostPort, AlternativeServiceInfoVector>&
key_value : http_server_properties_->alternative_service_map()) {
HostPortPair host_port_pair(key_value.first.host(), key_value.first.port());
for (const AlternativeServiceInfo& alternative_service_info :
key_value.second) {
if (alternative_service_info.alternative_service.protocol == kProtoQUIC) {
quic_supported_servers_at_startup_.insert(host_port_pair);
break;
}
}
}
if (http_server_properties_->max_server_configs_stored_in_properties() == 0)
return;
// Create a temporary QuicServerInfo object to deserialize and to populate the
// in-memory crypto server config cache in the MRU order.
std::unique_ptr<QuicServerInfo> server_info;
CompletionCallback callback;
// Get the list of servers to be deserialized first because WaitForDataReady
// touches quic_server_info_map.
const QuicServerInfoMap& quic_server_info_map =
http_server_properties_->quic_server_info_map();
std::vector<QuicServerId> server_list;
for (const auto& key_value : quic_server_info_map)
server_list.push_back(key_value.first);
for (auto it = server_list.rbegin(); it != server_list.rend(); ++it) {
const QuicServerId& server_id = *it;
server_info.reset(quic_server_info_factory_->GetForServer(server_id));
if (server_info->WaitForDataReady(callback) == OK) {
DVLOG(1) << "Initialized server config for: " << server_id.ToString();
InitializeCachedStateInCryptoConfig(server_id, server_info, nullptr);
}
}
}
void QuicStreamFactory::ProcessGoingAwaySession(
QuicChromiumClientSession* session,
const QuicServerId& server_id,
bool session_was_active) {
if (!http_server_properties_)
return;
const QuicConnectionStats& stats = session->connection()->GetStats();
const AlternativeService alternative_service(kProtoQUIC,
server_id.host_port_pair());
if (session->IsCryptoHandshakeConfirmed()) {
http_server_properties_->ConfirmAlternativeService(alternative_service);
ServerNetworkStats network_stats;
network_stats.srtt = base::TimeDelta::FromMicroseconds(stats.srtt_us);
network_stats.bandwidth_estimate = stats.estimated_bandwidth;
url::SchemeHostPort server("https", server_id.host_port_pair().host(),
server_id.host_port_pair().port());
http_server_properties_->SetServerNetworkStats(server, network_stats);
return;
}
UMA_HISTOGRAM_COUNTS("Net.QuicHandshakeNotConfirmedNumPacketsReceived",
stats.packets_received);
if (!session_was_active)
return;
// TODO(rch): In the special case where the session has received no
// packets from the peer, we should consider blacklisting this
// differently so that we still race TCP but we don't consider the
// session connected until the handshake has been confirmed.
HistogramBrokenAlternateProtocolLocation(
BROKEN_ALTERNATE_PROTOCOL_LOCATION_QUIC_STREAM_FACTORY);
// Since the session was active, there's no longer an
// HttpStreamFactoryImpl::Job running which can mark it broken, unless the TCP
// job also fails. So to avoid not using QUIC when we otherwise could, we mark
// it as recently broken, which means that 0-RTT will be disabled but we'll
// still race.
http_server_properties_->MarkAlternativeServiceRecentlyBroken(
alternative_service);
}
void QuicStreamFactory::OpenFactory() {
status_ = OPEN;
}
void QuicStreamFactory::MaybeClearConsecutiveDisabledCount() {
if (status_ == OPEN)
consecutive_disabled_count_ = 0;
}
} // namespace net