net/http/http_server_properties_impl.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
   6 #define NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
   7
   8 #include <deque>
   9 #include <map>
  10 #include <set>
  11 #include <string>
  12 #include <vector>
  13
  14 #include "base/basictypes.h"
  15 #include "base/containers/hash_tables.h"
  16 #include "base/gtest_prod_util.h"
  17 #include "base/threading/non_thread_safe.h"
  18 #include "base/values.h"
  19 #include "net/base/host_port_pair.h"
  20 #include "net/base/linked_hash_map.h"
  21 #include "net/base/net_export.h"
  22 #include "net/http/http_server_properties.h"
  23
  24 namespace base {
  25 class ListValue;
  26 }
  27
  28 namespace BASE_HASH_NAMESPACE {
  29
  30 template <>
  31 struct hash<net::AlternativeService> {
  32   size_t operator()(const net::AlternativeService& entry) const {
  33     return entry.protocol ^ hash<std::string>()(entry.host) ^ entry.port;
  34   }
  35 };
  36
  37 }  // namespace BASE_HASH_NAMESPACE
  38
  39 namespace net {
  40
  41 // The implementation for setting/retrieving the HTTP server properties.
  42 class NET_EXPORT HttpServerPropertiesImpl
  43     : public HttpServerProperties,
  44       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  45  public:
  46   HttpServerPropertiesImpl();
  47   ~HttpServerPropertiesImpl() override;
  48
  49   // Initializes |spdy_servers_map_| with the servers (host/port) from
  50   // |spdy_servers| that either support SPDY or not.
  51   void InitializeSpdyServers(std::vector<std::string>* spdy_servers,
  52                              bool support_spdy);
  53
  54   void InitializeAlternativeServiceServers(
  55       AlternativeServiceMap* alternate_protocol_servers);
  56
  57   void InitializeSpdySettingsServers(SpdySettingsMap* spdy_settings_map);
  58
  59   void InitializeSupportsQuic(IPAddressNumber* last_address);
  60
  61   void InitializeServerNetworkStats(
  62       ServerNetworkStatsMap* server_network_stats_map);
  63
  64   // Get the list of servers (host/port) that support SPDY. The max_size is the
  65   // number of MRU servers that support SPDY that are to be returned.
  66   void GetSpdyServerList(base::ListValue* spdy_server_list,
  67                          size_t max_size) const;
  68
  69   // Returns flattened string representation of the |host_port_pair|. Used by
  70   // unittests.
  71   static std::string GetFlattenedSpdyServer(const HostPortPair& host_port_pair);
  72
  73   // Returns the canonical host suffix for |host|, or std::string() if none
  74   // exists.
  75   std::string GetCanonicalSuffix(const std::string& host);
  76
  77   // -----------------------------
  78   // HttpServerProperties methods:
  79   // -----------------------------
  80
  81   base::WeakPtr<HttpServerProperties> GetWeakPtr() override;
  82   void Clear() override;
  83   bool SupportsRequestPriority(const HostPortPair& server) override;
  84   void SetSupportsSpdy(const HostPortPair& server, bool support_spdy) override;
  85   bool RequiresHTTP11(const HostPortPair& server) override;
  86   void SetHTTP11Required(const HostPortPair& server) override;
  87   void MaybeForceHTTP11(const HostPortPair& server,
  88                         SSLConfig* ssl_config) override;
  89   AlternativeService GetAlternativeService(const HostPortPair& origin) override;
  90   void SetAlternativeService(const HostPortPair& origin,
  91                              const AlternativeService& alternative_service,
  92                              double alternative_probability) override;
  93   void MarkAlternativeServiceBroken(
  94       const AlternativeService& alternative_service) override;
  95   void MarkAlternativeServiceRecentlyBroken(
  96       const AlternativeService& alternative_service) override;
  97   bool IsAlternativeServiceBroken(
  98       const AlternativeService& alternative_service) override;
  99   bool WasAlternativeServiceRecentlyBroken(
 100       const AlternativeService& alternative_service) override;
 101   void ConfirmAlternativeService(
 102       const AlternativeService& alternative_service) override;
 103   void ClearAlternativeService(const HostPortPair& origin) override;
 104   const AlternativeServiceMap& alternative_service_map() const override;
 105   void SetAlternateProtocolProbabilityThreshold(double threshold) override;
 106   const SettingsMap& GetSpdySettings(
 107       const HostPortPair& host_port_pair) override;
 108   bool SetSpdySetting(const HostPortPair& host_port_pair,
 109                       SpdySettingsIds id,
 110                       SpdySettingsFlags flags,
 111                       uint32 value) override;
 112   void ClearSpdySettings(const HostPortPair& host_port_pair) override;
 113   void ClearAllSpdySettings() override;
 114   const SpdySettingsMap& spdy_settings_map() const override;
 115   bool GetSupportsQuic(IPAddressNumber* last_address) const override;
 116   void SetSupportsQuic(bool used_quic, const IPAddressNumber& address) override;
 117   void SetServerNetworkStats(const HostPortPair& host_port_pair,
 118                              ServerNetworkStats stats) override;
 119   const ServerNetworkStats* GetServerNetworkStats(
 120       const HostPortPair& host_port_pair) override;
 121   const ServerNetworkStatsMap& server_network_stats_map() const override;
 122
 123  private:
 124   friend class HttpServerPropertiesImplPeer;
 125
 126   // |spdy_servers_map_| has flattened representation of servers (host, port)
 127   // that either support or not support SPDY protocol.
 128   typedef base::MRUCache<std::string, bool> SpdyServerHostPortMap;
 129   typedef std::map<HostPortPair, HostPortPair> CanonicalHostMap;
 130   typedef std::vector<std::string> CanonicalSufficList;
 131   typedef std::set<HostPortPair> Http11ServerHostPortSet;
 132
 133   // Linked hash map from AlternativeService to expiration time.  This container
 134   // is a queue with O(1) enqueue and dequeue, and a hash_map with O(1) lookup
 135   // at the same time.
 136   typedef linked_hash_map<AlternativeService, base::TimeTicks>
 137       BrokenAlternativeServices;
 138   // Map to the number of times each alternative service has been marked broken.
 139   typedef std::map<AlternativeService, int> RecentlyBrokenAlternativeServices;
 140
 141   // Return the iterator for |server|, or for its canonical host, or end.
 142   AlternativeServiceMap::const_iterator GetAlternateProtocolIterator(
 143       const HostPortPair& server);
 144
 145   // Return the canonical host for |server|, or end if none exists.
 146   CanonicalHostMap::const_iterator GetCanonicalHost(HostPortPair server) const;
 147
 148   void RemoveCanonicalHost(const HostPortPair& server);
 149   void ExpireBrokenAlternateProtocolMappings();
 150   void ScheduleBrokenAlternateProtocolMappingsExpiration();
 151
 152   SpdyServerHostPortMap spdy_servers_map_;
 153   Http11ServerHostPortSet http11_servers_;
 154
 155   AlternativeServiceMap alternative_service_map_;
 156   BrokenAlternativeServices broken_alternative_services_;
 157   // Class invariant:  Every alternative service in broken_alternative_services_
 158   // must also be in recently_broken_alternative_services_.
 159   RecentlyBrokenAlternativeServices recently_broken_alternative_services_;
 160
 161   IPAddressNumber last_quic_address_;
 162   SpdySettingsMap spdy_settings_map_;
 163   ServerNetworkStatsMap server_network_stats_map_;
 164   // Contains a map of servers which could share the same alternate protocol.
 165   // Map from a Canonical host/port (host is some postfix of host names) to an
 166   // actual origin, which has a plausible alternate protocol mapping.
 167   CanonicalHostMap canonical_host_to_origin_map_;
 168   // Contains list of suffixes (for exmaple ".c.youtube.com",
 169   // ".googlevideo.com", ".googleusercontent.com") of canonical hostnames.
 170   CanonicalSufficList canonical_suffixes_;
 171
 172   double alternate_protocol_probability_threshold_;
 173
 174   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 175
 176   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
 177 };
 178
 179 }  // namespace net
 180
 181 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_