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// 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/http/http_server_properties_impl.h"
#include <algorithm>
#include "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/metrics/histogram_macros.h"
#include "base/single_thread_task_runner.h"
#include "base/stl_util.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/thread_task_runner_handle.h"
#include "base/values.h"
namespace net {
namespace {
const uint64_t kBrokenAlternativeProtocolDelaySecs = 300;
} // namespace
HttpServerPropertiesImpl::HttpServerPropertiesImpl()
: spdy_servers_map_(SpdyServerHostPortMap::NO_AUTO_EVICT),
alternative_service_map_(AlternativeServiceMap::NO_AUTO_EVICT),
spdy_settings_map_(SpdySettingsMap::NO_AUTO_EVICT),
server_network_stats_map_(ServerNetworkStatsMap::NO_AUTO_EVICT),
alternative_service_probability_threshold_(1.0),
quic_server_info_map_(kMaxQuicServersToPersist),
weak_ptr_factory_(this) {
canonical_suffixes_.push_back(".c.youtube.com");
canonical_suffixes_.push_back(".googlevideo.com");
canonical_suffixes_.push_back(".googleusercontent.com");
}
HttpServerPropertiesImpl::~HttpServerPropertiesImpl() {
}
void HttpServerPropertiesImpl::InitializeSpdyServers(
std::vector<std::string>* spdy_servers,
bool support_spdy) {
DCHECK(CalledOnValidThread());
if (!spdy_servers)
return;
// Add the entries from persisted data.
SpdyServerHostPortMap spdy_servers_map(SpdyServerHostPortMap::NO_AUTO_EVICT);
for (std::vector<std::string>::reverse_iterator it = spdy_servers->rbegin();
it != spdy_servers->rend(); ++it) {
spdy_servers_map.Put(*it, support_spdy);
}
// |spdy_servers_map| will have the memory cache.
spdy_servers_map_.Swap(spdy_servers_map);
// Add the entries from the memory cache.
for (SpdyServerHostPortMap::reverse_iterator it = spdy_servers_map.rbegin();
it != spdy_servers_map.rend(); ++it) {
// Add the entry if it is not in the cache, otherwise move it to the front
// of recency list.
if (spdy_servers_map_.Get(it->first) == spdy_servers_map_.end())
spdy_servers_map_.Put(it->first, it->second);
}
}
void HttpServerPropertiesImpl::InitializeAlternativeServiceServers(
AlternativeServiceMap* alternative_service_map) {
int32_t size_diff =
alternative_service_map->size() - alternative_service_map_.size();
if (size_diff > 0) {
UMA_HISTOGRAM_COUNTS("Net.AlternativeServiceServers.MorePrefsEntries",
size_diff);
} else {
UMA_HISTOGRAM_COUNTS(
"Net.AlternativeServiceServers.MoreOrEqualCacheEntries", -size_diff);
}
AlternativeServiceMap new_alternative_service_map(
AlternativeServiceMap::NO_AUTO_EVICT);
// Add the entries from persisted data.
for (AlternativeServiceMap::reverse_iterator input_it =
alternative_service_map->rbegin();
input_it != alternative_service_map->rend(); ++input_it) {
DCHECK(!input_it->second.empty());
new_alternative_service_map.Put(input_it->first, input_it->second);
}
alternative_service_map_.Swap(new_alternative_service_map);
// Add the entries from the memory cache.
for (AlternativeServiceMap::reverse_iterator input_it =
new_alternative_service_map.rbegin();
input_it != new_alternative_service_map.rend(); ++input_it) {
if (alternative_service_map_.Get(input_it->first) ==
alternative_service_map_.end()) {
alternative_service_map_.Put(input_it->first, input_it->second);
}
}
// Attempt to find canonical servers.
uint16_t canonical_ports[] = {80, 443};
for (size_t i = 0; i < canonical_suffixes_.size(); ++i) {
std::string canonical_suffix = canonical_suffixes_[i];
for (size_t j = 0; j < arraysize(canonical_ports); ++j) {
HostPortPair canonical_host(canonical_suffix, canonical_ports[j]);
// If we already have a valid canonical server, we're done.
if (ContainsKey(canonical_host_to_origin_map_, canonical_host) &&
(alternative_service_map_.Peek(
canonical_host_to_origin_map_[canonical_host]) !=
alternative_service_map_.end())) {
continue;
}
// Now attempt to find a server which matches this origin and set it as
// canonical.
for (AlternativeServiceMap::const_iterator it =
alternative_service_map_.begin();
it != alternative_service_map_.end(); ++it) {
if (base::EndsWith(it->first.host(), canonical_suffixes_[i],
base::CompareCase::INSENSITIVE_ASCII)) {
canonical_host_to_origin_map_[canonical_host] = it->first;
break;
}
}
}
}
}
void HttpServerPropertiesImpl::InitializeSpdySettingsServers(
SpdySettingsMap* spdy_settings_map) {
// Add the entries from persisted data.
SpdySettingsMap new_spdy_settings_map(SpdySettingsMap::NO_AUTO_EVICT);
for (SpdySettingsMap::reverse_iterator it = spdy_settings_map->rbegin();
it != spdy_settings_map->rend(); ++it) {
new_spdy_settings_map.Put(it->first, it->second);
}
spdy_settings_map_.Swap(new_spdy_settings_map);
// Add the entries from the memory cache.
for (SpdySettingsMap::reverse_iterator it = new_spdy_settings_map.rbegin();
it != new_spdy_settings_map.rend(); ++it) {
if (spdy_settings_map_.Get(it->first) == spdy_settings_map_.end())
spdy_settings_map_.Put(it->first, it->second);
}
}
void HttpServerPropertiesImpl::InitializeSupportsQuic(
IPAddressNumber* last_address) {
if (last_address)
last_quic_address_ = *last_address;
}
void HttpServerPropertiesImpl::InitializeServerNetworkStats(
ServerNetworkStatsMap* server_network_stats_map) {
// Add the entries from persisted data.
ServerNetworkStatsMap new_server_network_stats_map(
ServerNetworkStatsMap::NO_AUTO_EVICT);
for (ServerNetworkStatsMap::reverse_iterator it =
server_network_stats_map->rbegin();
it != server_network_stats_map->rend(); ++it) {
new_server_network_stats_map.Put(it->first, it->second);
}
server_network_stats_map_.Swap(new_server_network_stats_map);
// Add the entries from the memory cache.
for (ServerNetworkStatsMap::reverse_iterator it =
new_server_network_stats_map.rbegin();
it != new_server_network_stats_map.rend(); ++it) {
if (server_network_stats_map_.Get(it->first) ==
server_network_stats_map_.end()) {
server_network_stats_map_.Put(it->first, it->second);
}
}
}
void HttpServerPropertiesImpl::InitializeQuicServerInfoMap(
QuicServerInfoMap* quic_server_info_map) {
// Add the entries from persisted data.
QuicServerInfoMap temp_map(kMaxQuicServersToPersist);
for (QuicServerInfoMap::reverse_iterator it = quic_server_info_map->rbegin();
it != quic_server_info_map->rend(); ++it) {
temp_map.Put(it->first, it->second);
}
quic_server_info_map_.Swap(temp_map);
// Add the entries from the memory cache.
for (QuicServerInfoMap::reverse_iterator it = temp_map.rbegin();
it != temp_map.rend(); ++it) {
if (quic_server_info_map_.Get(it->first) == quic_server_info_map_.end()) {
quic_server_info_map_.Put(it->first, it->second);
}
}
}
void HttpServerPropertiesImpl::GetSpdyServerList(
base::ListValue* spdy_server_list,
size_t max_size) const {
DCHECK(CalledOnValidThread());
DCHECK(spdy_server_list);
spdy_server_list->Clear();
size_t count = 0;
// Get the list of servers (host/port) that support SPDY.
for (SpdyServerHostPortMap::const_iterator it = spdy_servers_map_.begin();
it != spdy_servers_map_.end() && count < max_size; ++it) {
const std::string spdy_server_host_port = it->first;
if (it->second) {
spdy_server_list->Append(new base::StringValue(spdy_server_host_port));
++count;
}
}
}
base::WeakPtr<HttpServerProperties> HttpServerPropertiesImpl::GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
void HttpServerPropertiesImpl::Clear() {
DCHECK(CalledOnValidThread());
spdy_servers_map_.Clear();
alternative_service_map_.Clear();
canonical_host_to_origin_map_.clear();
spdy_settings_map_.Clear();
last_quic_address_.clear();
server_network_stats_map_.Clear();
quic_server_info_map_.Clear();
}
bool HttpServerPropertiesImpl::SupportsRequestPriority(
const HostPortPair& host_port_pair) {
DCHECK(CalledOnValidThread());
if (host_port_pair.host().empty())
return false;
if (GetSupportsSpdy(host_port_pair))
return true;
const AlternativeServiceVector alternative_service_vector =
GetAlternativeServices(host_port_pair);
for (const AlternativeService& alternative_service :
alternative_service_vector) {
if (alternative_service.protocol == QUIC) {
return true;
}
}
return false;
}
bool HttpServerPropertiesImpl::GetSupportsSpdy(
const HostPortPair& host_port_pair) {
DCHECK(CalledOnValidThread());
if (host_port_pair.host().empty())
return false;
SpdyServerHostPortMap::iterator spdy_host_port =
spdy_servers_map_.Get(host_port_pair.ToString());
return spdy_host_port != spdy_servers_map_.end() && spdy_host_port->second;
}
void HttpServerPropertiesImpl::SetSupportsSpdy(
const HostPortPair& host_port_pair,
bool support_spdy) {
DCHECK(CalledOnValidThread());
if (host_port_pair.host().empty())
return;
SpdyServerHostPortMap::iterator spdy_host_port =
spdy_servers_map_.Get(host_port_pair.ToString());
if ((spdy_host_port != spdy_servers_map_.end()) &&
(spdy_host_port->second == support_spdy)) {
return;
}
// Cache the data.
spdy_servers_map_.Put(host_port_pair.ToString(), support_spdy);
}
bool HttpServerPropertiesImpl::RequiresHTTP11(
const HostPortPair& host_port_pair) {
DCHECK(CalledOnValidThread());
if (host_port_pair.host().empty())
return false;
return (http11_servers_.find(host_port_pair) != http11_servers_.end());
}
void HttpServerPropertiesImpl::SetHTTP11Required(
const HostPortPair& host_port_pair) {
DCHECK(CalledOnValidThread());
if (host_port_pair.host().empty())
return;
http11_servers_.insert(host_port_pair);
}
void HttpServerPropertiesImpl::MaybeForceHTTP11(const HostPortPair& server,
SSLConfig* ssl_config) {
if (RequiresHTTP11(server)) {
ForceHTTP11(ssl_config);
}
}
std::string HttpServerPropertiesImpl::GetCanonicalSuffix(
const std::string& host) {
// If this host ends with a canonical suffix, then return the canonical
// suffix.
for (size_t i = 0; i < canonical_suffixes_.size(); ++i) {
std::string canonical_suffix = canonical_suffixes_[i];
if (base::EndsWith(host, canonical_suffixes_[i],
base::CompareCase::INSENSITIVE_ASCII)) {
return canonical_suffix;
}
}
return std::string();
}
AlternativeServiceVector HttpServerPropertiesImpl::GetAlternativeServices(
const HostPortPair& origin) {
// Copy alternative services with probability greater than or equal to the
// threshold into |alternative_services_above_threshold|.
AlternativeServiceVector alternative_services_above_threshold;
const base::Time now = base::Time::Now();
AlternativeServiceMap::iterator map_it = alternative_service_map_.Get(origin);
if (map_it != alternative_service_map_.end()) {
for (AlternativeServiceInfoVector::iterator it = map_it->second.begin();
it != map_it->second.end();) {
if (it->expiration < now) {
it = map_it->second.erase(it);
continue;
}
if (it->probability == 0 ||
it->probability < alternative_service_probability_threshold_) {
++it;
continue;
}
AlternativeService alternative_service(it->alternative_service);
if (alternative_service.host.empty()) {
alternative_service.host = origin.host();
}
// If the alternative service is equivalent to the origin (same host, same
// port, and both TCP), then there is already a Job for it, so do not
// return it here.
if (origin.Equals(alternative_service.host_port_pair()) &&
NPN_SPDY_MINIMUM_VERSION <= alternative_service.protocol &&
alternative_service.protocol <= NPN_SPDY_MAXIMUM_VERSION) {
++it;
continue;
}
alternative_services_above_threshold.push_back(alternative_service);
++it;
}
if (map_it->second.empty()) {
alternative_service_map_.Erase(map_it);
}
return alternative_services_above_threshold;
}
CanonicalHostMap::const_iterator canonical = GetCanonicalHost(origin);
if (canonical == canonical_host_to_origin_map_.end()) {
return AlternativeServiceVector();
}
map_it = alternative_service_map_.Get(canonical->second);
if (map_it == alternative_service_map_.end()) {
return AlternativeServiceVector();
}
for (AlternativeServiceInfoVector::iterator it = map_it->second.begin();
it != map_it->second.end();) {
if (it->expiration < now) {
it = map_it->second.erase(it);
continue;
}
if (it->probability < alternative_service_probability_threshold_) {
++it;
continue;
}
AlternativeService alternative_service(it->alternative_service);
if (alternative_service.host.empty()) {
alternative_service.host = canonical->second.host();
if (IsAlternativeServiceBroken(alternative_service)) {
++it;
continue;
}
alternative_service.host = origin.host();
} else if (IsAlternativeServiceBroken(alternative_service)) {
++it;
continue;
}
alternative_services_above_threshold.push_back(alternative_service);
++it;
}
if (map_it->second.empty()) {
alternative_service_map_.Erase(map_it);
}
return alternative_services_above_threshold;
}
bool HttpServerPropertiesImpl::SetAlternativeService(
const HostPortPair& origin,
const AlternativeService& alternative_service,
double alternative_probability,
base::Time expiration) {
return SetAlternativeServices(
origin, AlternativeServiceInfoVector(
/*size=*/1,
AlternativeServiceInfo(alternative_service,
alternative_probability, expiration)));
}
bool HttpServerPropertiesImpl::SetAlternativeServices(
const HostPortPair& origin,
const AlternativeServiceInfoVector& alternative_service_info_vector) {
AlternativeServiceMap::iterator it = alternative_service_map_.Peek(origin);
if (alternative_service_info_vector.empty()) {
if (it == alternative_service_map_.end()) {
return false;
}
ClearAlternativeServices(origin);
return true;
}
bool changed = true;
if (it != alternative_service_map_.end()) {
DCHECK(!it->second.empty());
if (it->second.size() == alternative_service_info_vector.size()) {
changed = !std::equal(it->second.begin(), it->second.end(),
alternative_service_info_vector.begin());
}
}
const bool previously_no_alternative_services =
(GetAlternateProtocolIterator(origin) == alternative_service_map_.end());
alternative_service_map_.Put(origin, alternative_service_info_vector);
if (previously_no_alternative_services &&
!GetAlternativeServices(origin).empty()) {
// TODO(rch): Consider the case where multiple requests are started
// before the first completes. In this case, only one of the jobs
// would reach this code, whereas all of them should should have.
HistogramAlternateProtocolUsage(ALTERNATE_PROTOCOL_USAGE_MAPPING_MISSING);
}
// If this host ends with a canonical suffix, then set it as the
// canonical host.
for (size_t i = 0; i < canonical_suffixes_.size(); ++i) {
std::string canonical_suffix = canonical_suffixes_[i];
if (base::EndsWith(origin.host(), canonical_suffixes_[i],
base::CompareCase::INSENSITIVE_ASCII)) {
HostPortPair canonical_host(canonical_suffix, origin.port());
canonical_host_to_origin_map_[canonical_host] = origin;
break;
}
}
return changed;
}
void HttpServerPropertiesImpl::MarkAlternativeServiceBroken(
const AlternativeService& alternative_service) {
// Empty host means use host of origin, callers are supposed to substitute.
DCHECK(!alternative_service.host.empty());
if (alternative_service.protocol == UNINITIALIZED_ALTERNATE_PROTOCOL) {
LOG(DFATAL) << "Trying to mark unknown alternate protocol broken.";
return;
}
int count = ++recently_broken_alternative_services_[alternative_service];
base::TimeDelta delay =
base::TimeDelta::FromSeconds(kBrokenAlternativeProtocolDelaySecs);
base::TimeTicks when = base::TimeTicks::Now() + delay * (1 << (count - 1));
auto result = broken_alternative_services_.insert(
std::make_pair(alternative_service, when));
// Return if alternative service is already in expiration queue.
if (!result.second) {
return;
}
// If this is the only entry in the list, schedule an expiration task.
// Otherwise it will be rescheduled automatically when the pending task runs.
if (broken_alternative_services_.size() == 1) {
ScheduleBrokenAlternateProtocolMappingsExpiration();
}
}
void HttpServerPropertiesImpl::MarkAlternativeServiceRecentlyBroken(
const AlternativeService& alternative_service) {
if (!ContainsKey(recently_broken_alternative_services_, alternative_service))
recently_broken_alternative_services_[alternative_service] = 1;
}
bool HttpServerPropertiesImpl::IsAlternativeServiceBroken(
const AlternativeService& alternative_service) const {
// Empty host means use host of origin, callers are supposed to substitute.
DCHECK(!alternative_service.host.empty());
return ContainsKey(broken_alternative_services_, alternative_service);
}
bool HttpServerPropertiesImpl::WasAlternativeServiceRecentlyBroken(
const AlternativeService& alternative_service) {
if (alternative_service.protocol == UNINITIALIZED_ALTERNATE_PROTOCOL)
return false;
return ContainsKey(recently_broken_alternative_services_,
alternative_service);
}
void HttpServerPropertiesImpl::ConfirmAlternativeService(
const AlternativeService& alternative_service) {
if (alternative_service.protocol == UNINITIALIZED_ALTERNATE_PROTOCOL)
return;
broken_alternative_services_.erase(alternative_service);
recently_broken_alternative_services_.erase(alternative_service);
}
void HttpServerPropertiesImpl::ClearAlternativeServices(
const HostPortPair& origin) {
RemoveCanonicalHost(origin);
AlternativeServiceMap::iterator it = alternative_service_map_.Peek(origin);
if (it == alternative_service_map_.end()) {
return;
}
alternative_service_map_.Erase(it);
}
const AlternativeServiceMap& HttpServerPropertiesImpl::alternative_service_map()
const {
return alternative_service_map_;
}
scoped_ptr<base::Value>
HttpServerPropertiesImpl::GetAlternativeServiceInfoAsValue()
const {
scoped_ptr<base::ListValue> dict_list(new base::ListValue);
for (const auto& alternative_service_map_item : alternative_service_map_) {
scoped_ptr<base::ListValue> alternative_service_list(new base::ListValue);
const HostPortPair& host_port_pair = alternative_service_map_item.first;
for (const AlternativeServiceInfo& alternative_service_info :
alternative_service_map_item.second) {
std::string alternative_service_string(
alternative_service_info.ToString());
AlternativeService alternative_service(
alternative_service_info.alternative_service);
if (alternative_service.host.empty()) {
alternative_service.host = host_port_pair.host();
}
if (IsAlternativeServiceBroken(alternative_service)) {
alternative_service_string.append(" (broken)");
}
alternative_service_list->Append(
new base::StringValue(alternative_service_string));
}
if (alternative_service_list->empty())
continue;
scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
dict->SetString("host_port_pair", host_port_pair.ToString());
dict->Set("alternative_service",
scoped_ptr<base::Value>(alternative_service_list.Pass()));
dict_list->Append(dict.Pass());
}
return dict_list.Pass();
}
const SettingsMap& HttpServerPropertiesImpl::GetSpdySettings(
const HostPortPair& host_port_pair) {
SpdySettingsMap::iterator it = spdy_settings_map_.Get(host_port_pair);
if (it == spdy_settings_map_.end()) {
CR_DEFINE_STATIC_LOCAL(SettingsMap, kEmptySettingsMap, ());
return kEmptySettingsMap;
}
return it->second;
}
bool HttpServerPropertiesImpl::SetSpdySetting(
const HostPortPair& host_port_pair,
SpdySettingsIds id,
SpdySettingsFlags flags,
uint32_t value) {
if (!(flags & SETTINGS_FLAG_PLEASE_PERSIST))
return false;
SettingsFlagsAndValue flags_and_value(SETTINGS_FLAG_PERSISTED, value);
SpdySettingsMap::iterator it = spdy_settings_map_.Get(host_port_pair);
if (it == spdy_settings_map_.end()) {
SettingsMap settings_map;
settings_map[id] = flags_and_value;
spdy_settings_map_.Put(host_port_pair, settings_map);
} else {
SettingsMap& settings_map = it->second;
settings_map[id] = flags_and_value;
}
return true;
}
void HttpServerPropertiesImpl::ClearSpdySettings(
const HostPortPair& host_port_pair) {
SpdySettingsMap::iterator it = spdy_settings_map_.Peek(host_port_pair);
if (it != spdy_settings_map_.end())
spdy_settings_map_.Erase(it);
}
void HttpServerPropertiesImpl::ClearAllSpdySettings() {
spdy_settings_map_.Clear();
}
const SpdySettingsMap&
HttpServerPropertiesImpl::spdy_settings_map() const {
return spdy_settings_map_;
}
bool HttpServerPropertiesImpl::GetSupportsQuic(
IPAddressNumber* last_address) const {
if (last_quic_address_.empty())
return false;
*last_address = last_quic_address_;
return true;
}
void HttpServerPropertiesImpl::SetSupportsQuic(bool used_quic,
const IPAddressNumber& address) {
if (!used_quic) {
last_quic_address_.clear();
} else {
last_quic_address_ = address;
}
}
void HttpServerPropertiesImpl::SetServerNetworkStats(
const HostPortPair& host_port_pair,
ServerNetworkStats stats) {
server_network_stats_map_.Put(host_port_pair, stats);
}
const ServerNetworkStats* HttpServerPropertiesImpl::GetServerNetworkStats(
const HostPortPair& host_port_pair) {
ServerNetworkStatsMap::iterator it =
server_network_stats_map_.Get(host_port_pair);
if (it == server_network_stats_map_.end()) {
return NULL;
}
return &it->second;
}
const ServerNetworkStatsMap&
HttpServerPropertiesImpl::server_network_stats_map() const {
return server_network_stats_map_;
}
bool HttpServerPropertiesImpl::SetQuicServerInfo(
const QuicServerId& server_id,
const std::string& server_info) {
QuicServerInfoMap::iterator it = quic_server_info_map_.Peek(server_id);
bool changed =
(it == quic_server_info_map_.end() || it->second != server_info);
quic_server_info_map_.Put(server_id, server_info);
return changed;
}
const std::string* HttpServerPropertiesImpl::GetQuicServerInfo(
const QuicServerId& server_id) {
QuicServerInfoMap::iterator it = quic_server_info_map_.Get(server_id);
if (it == quic_server_info_map_.end())
return nullptr;
return &it->second;
}
const QuicServerInfoMap& HttpServerPropertiesImpl::quic_server_info_map()
const {
return quic_server_info_map_;
}
void HttpServerPropertiesImpl::SetAlternativeServiceProbabilityThreshold(
double threshold) {
alternative_service_probability_threshold_ = threshold;
}
AlternativeServiceMap::const_iterator
HttpServerPropertiesImpl::GetAlternateProtocolIterator(
const HostPortPair& server) {
AlternativeServiceMap::const_iterator it =
alternative_service_map_.Get(server);
if (it != alternative_service_map_.end())
return it;
CanonicalHostMap::const_iterator canonical = GetCanonicalHost(server);
if (canonical == canonical_host_to_origin_map_.end()) {
return alternative_service_map_.end();
}
const HostPortPair canonical_host_port = canonical->second;
it = alternative_service_map_.Get(canonical_host_port);
if (it == alternative_service_map_.end()) {
return alternative_service_map_.end();
}
for (const AlternativeServiceInfo& alternative_service_info : it->second) {
AlternativeService alternative_service(
alternative_service_info.alternative_service);
if (alternative_service.host.empty()) {
alternative_service.host = canonical_host_port.host();
}
if (!IsAlternativeServiceBroken(alternative_service)) {
return it;
}
}
RemoveCanonicalHost(canonical_host_port);
return alternative_service_map_.end();
}
HttpServerPropertiesImpl::CanonicalHostMap::const_iterator
HttpServerPropertiesImpl::GetCanonicalHost(HostPortPair server) const {
for (size_t i = 0; i < canonical_suffixes_.size(); ++i) {
std::string canonical_suffix = canonical_suffixes_[i];
if (base::EndsWith(server.host(), canonical_suffixes_[i],
base::CompareCase::INSENSITIVE_ASCII)) {
HostPortPair canonical_host(canonical_suffix, server.port());
return canonical_host_to_origin_map_.find(canonical_host);
}
}
return canonical_host_to_origin_map_.end();
}
void HttpServerPropertiesImpl::RemoveCanonicalHost(
const HostPortPair& server) {
CanonicalHostMap::const_iterator canonical = GetCanonicalHost(server);
if (canonical == canonical_host_to_origin_map_.end())
return;
if (!canonical->second.Equals(server))
return;
canonical_host_to_origin_map_.erase(canonical->first);
}
void HttpServerPropertiesImpl::ExpireBrokenAlternateProtocolMappings() {
base::TimeTicks now = base::TimeTicks::Now();
while (!broken_alternative_services_.empty()) {
BrokenAlternativeServices::iterator it =
broken_alternative_services_.begin();
if (now < it->second) {
break;
}
const AlternativeService expired_alternative_service = it->first;
broken_alternative_services_.erase(it);
// Remove every occurrence of |expired_alternative_service| from
// |alternative_service_map_|.
for (AlternativeServiceMap::iterator map_it =
alternative_service_map_.begin();
map_it != alternative_service_map_.end();) {
for (AlternativeServiceInfoVector::iterator it = map_it->second.begin();
it != map_it->second.end();) {
AlternativeService alternative_service(it->alternative_service);
// Empty hostname in map means hostname of key: substitute before
// comparing to |expired_alternative_service|.
if (alternative_service.host.empty()) {
alternative_service.host = map_it->first.host();
}
if (alternative_service == expired_alternative_service) {
it = map_it->second.erase(it);
continue;
}
++it;
}
// If an origin has an empty list of alternative services, then remove it
// from both |canonical_host_to_origin_map_| and
// |alternative_service_map_|.
if (map_it->second.empty()) {
RemoveCanonicalHost(map_it->first);
map_it = alternative_service_map_.Erase(map_it);
continue;
}
++map_it;
}
}
ScheduleBrokenAlternateProtocolMappingsExpiration();
}
void
HttpServerPropertiesImpl::ScheduleBrokenAlternateProtocolMappingsExpiration() {
if (broken_alternative_services_.empty()) {
return;
}
base::TimeTicks now = base::TimeTicks::Now();
base::TimeTicks when = broken_alternative_services_.front().second;
base::TimeDelta delay = when > now ? when - now : base::TimeDelta();
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE,
base::Bind(
&HttpServerPropertiesImpl::ExpireBrokenAlternateProtocolMappings,
weak_ptr_factory_.GetWeakPtr()),
delay);
}
} // namespace net
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