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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.
#ifndef NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
#define NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
#include <stddef.h>
#include <stdint.h>
#include <deque>
#include <map>
#include <set>
#include <string>
#include <vector>
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "base/threading/non_thread_safe.h"
#include "base/values.h"
#include "net/base/host_port_pair.h"
#include "net/base/linked_hash_map.h"
#include "net/base/net_export.h"
#include "net/http/http_server_properties.h"
namespace base {
class ListValue;
}
namespace BASE_HASH_NAMESPACE {
template <>
struct hash<net::AlternativeService> {
size_t operator()(const net::AlternativeService& entry) const {
return entry.protocol ^ hash<std::string>()(entry.host) ^ entry.port;
}
};
} // namespace BASE_HASH_NAMESPACE
namespace net {
// The implementation for setting/retrieving the HTTP server properties.
class NET_EXPORT HttpServerPropertiesImpl
: public HttpServerProperties,
NON_EXPORTED_BASE(public base::NonThreadSafe) {
public:
HttpServerPropertiesImpl();
~HttpServerPropertiesImpl() override;
// Initializes |spdy_servers_map_| with the servers (host/port) from
// |spdy_servers| that either support SPDY or not.
void InitializeSpdyServers(std::vector<std::string>* spdy_servers,
bool support_spdy);
void InitializeAlternativeServiceServers(
AlternativeServiceMap* alternate_protocol_servers);
void InitializeSpdySettingsServers(SpdySettingsMap* spdy_settings_map);
void InitializeSupportsQuic(IPAddressNumber* last_address);
void InitializeServerNetworkStats(
ServerNetworkStatsMap* server_network_stats_map);
void InitializeQuicServerInfoMap(QuicServerInfoMap* quic_server_info_map);
// Get the list of servers (host/port) that support SPDY. The max_size is the
// number of MRU servers that support SPDY that are to be returned.
void GetSpdyServerList(base::ListValue* spdy_server_list,
size_t max_size) const;
// Returns flattened string representation of the |host_port_pair|. Used by
// unittests.
static std::string GetFlattenedSpdyServer(const HostPortPair& host_port_pair);
// Returns the canonical host suffix for |host|, or std::string() if none
// exists.
std::string GetCanonicalSuffix(const std::string& host);
// -----------------------------
// HttpServerProperties methods:
// -----------------------------
base::WeakPtr<HttpServerProperties> GetWeakPtr() override;
void Clear() override;
bool SupportsRequestPriority(const HostPortPair& server) override;
bool GetSupportsSpdy(const HostPortPair& server) override;
void SetSupportsSpdy(const HostPortPair& server, bool support_spdy) override;
bool RequiresHTTP11(const HostPortPair& server) override;
void SetHTTP11Required(const HostPortPair& server) override;
void MaybeForceHTTP11(const HostPortPair& server,
SSLConfig* ssl_config) override;
AlternativeServiceVector GetAlternativeServices(
const HostPortPair& origin) override;
bool SetAlternativeService(const HostPortPair& origin,
const AlternativeService& alternative_service,
double alternative_probability,
base::Time expiration) override;
bool SetAlternativeServices(const HostPortPair& origin,
const AlternativeServiceInfoVector&
alternative_service_info_vector) override;
void MarkAlternativeServiceBroken(
const AlternativeService& alternative_service) override;
void MarkAlternativeServiceRecentlyBroken(
const AlternativeService& alternative_service) override;
bool IsAlternativeServiceBroken(
const AlternativeService& alternative_service) const override;
bool WasAlternativeServiceRecentlyBroken(
const AlternativeService& alternative_service) override;
void ConfirmAlternativeService(
const AlternativeService& alternative_service) override;
void ClearAlternativeServices(const HostPortPair& origin) override;
const AlternativeServiceMap& alternative_service_map() const override;
scoped_ptr<base::Value> GetAlternativeServiceInfoAsValue() const override;
void SetAlternativeServiceProbabilityThreshold(double threshold) override;
const SettingsMap& GetSpdySettings(
const HostPortPair& host_port_pair) override;
bool SetSpdySetting(const HostPortPair& host_port_pair,
SpdySettingsIds id,
SpdySettingsFlags flags,
uint32_t value) override;
void ClearSpdySettings(const HostPortPair& host_port_pair) override;
void ClearAllSpdySettings() override;
const SpdySettingsMap& spdy_settings_map() const override;
bool GetSupportsQuic(IPAddressNumber* last_address) const override;
void SetSupportsQuic(bool used_quic, const IPAddressNumber& address) override;
void SetServerNetworkStats(const HostPortPair& host_port_pair,
ServerNetworkStats stats) override;
const ServerNetworkStats* GetServerNetworkStats(
const HostPortPair& host_port_pair) override;
const ServerNetworkStatsMap& server_network_stats_map() const override;
bool SetQuicServerInfo(const QuicServerId& server_id,
const std::string& server_info) override;
const std::string* GetQuicServerInfo(const QuicServerId& server_id) override;
const QuicServerInfoMap& quic_server_info_map() const override;
size_t max_server_configs_stored_in_properties() const override;
void SetMaxServerConfigsStoredInProperties(
size_t max_server_configs_stored_in_properties) override;
private:
friend class HttpServerPropertiesImplPeer;
// |spdy_servers_map_| has flattened representation of servers (host, port)
// that either support or not support SPDY protocol.
typedef base::MRUCache<std::string, bool> SpdyServerHostPortMap;
typedef std::map<HostPortPair, HostPortPair> CanonicalHostMap;
typedef std::vector<std::string> CanonicalSufficList;
typedef std::set<HostPortPair> Http11ServerHostPortSet;
// Linked hash map from AlternativeService to expiration time. This container
// is a queue with O(1) enqueue and dequeue, and a hash_map with O(1) lookup
// at the same time.
typedef linked_hash_map<AlternativeService, base::TimeTicks>
BrokenAlternativeServices;
// Map to the number of times each alternative service has been marked broken.
typedef std::map<AlternativeService, int> RecentlyBrokenAlternativeServices;
// Return the iterator for |server|, or for its canonical host, or end.
AlternativeServiceMap::const_iterator GetAlternateProtocolIterator(
const HostPortPair& server);
// Return the canonical host for |server|, or end if none exists.
CanonicalHostMap::const_iterator GetCanonicalHost(HostPortPair server) const;
void RemoveCanonicalHost(const HostPortPair& server);
void ExpireBrokenAlternateProtocolMappings();
void ScheduleBrokenAlternateProtocolMappingsExpiration();
SpdyServerHostPortMap spdy_servers_map_;
Http11ServerHostPortSet http11_servers_;
AlternativeServiceMap alternative_service_map_;
BrokenAlternativeServices broken_alternative_services_;
// Class invariant: Every alternative service in broken_alternative_services_
// must also be in recently_broken_alternative_services_.
RecentlyBrokenAlternativeServices recently_broken_alternative_services_;
IPAddressNumber last_quic_address_;
SpdySettingsMap spdy_settings_map_;
ServerNetworkStatsMap server_network_stats_map_;
// Contains a map of servers which could share the same alternate protocol.
// Map from a Canonical host/port (host is some postfix of host names) to an
// actual origin, which has a plausible alternate protocol mapping.
CanonicalHostMap canonical_host_to_origin_map_;
// Contains list of suffixes (for exmaple ".c.youtube.com",
// ".googlevideo.com", ".googleusercontent.com") of canonical hostnames.
CanonicalSufficList canonical_suffixes_;
double alternative_service_probability_threshold_;
QuicServerInfoMap quic_server_info_map_;
size_t max_server_configs_stored_in_properties_;
base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
};
} // namespace net
#endif // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
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