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 <map>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/containers/hash_tables.h"
  14 #include "base/gtest_prod_util.h"
  15 #include "base/threading/non_thread_safe.h"
  16 #include "base/values.h"
  17 #include "net/base/host_port_pair.h"
  18 #include "net/base/net_export.h"
  19 #include "net/http/http_server_properties.h"
  20
  21 namespace base {
  22 class ListValue;
  23 }
  24
  25 namespace net {
  26
  27 // The implementation for setting/retrieving the HTTP server properties.
  28 class NET_EXPORT HttpServerPropertiesImpl
  29     : public HttpServerProperties,
  30       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  31  public:
  32   HttpServerPropertiesImpl();
  33   virtual ~HttpServerPropertiesImpl();
  34
  35   // Initializes |spdy_servers_map_| with the servers (host/port) from
  36   // |spdy_servers| that either support SPDY or not.
  37   void InitializeSpdyServers(std::vector<std::string>* spdy_servers,
  38                              bool support_spdy);
  39
  40   void InitializeAlternateProtocolServers(
  41       AlternateProtocolMap* alternate_protocol_servers);
  42
  43   void InitializeSpdySettingsServers(SpdySettingsMap* spdy_settings_map);
  44
  45   // Get the list of servers (host/port) that support SPDY. The max_size is the
  46   // number of MRU servers that support SPDY that are to be returned.
  47   void GetSpdyServerList(base::ListValue* spdy_server_list,
  48                          size_t max_size) const;
  49
  50   // Returns flattened string representation of the |host_port_pair|. Used by
  51   // unittests.
  52   static std::string GetFlattenedSpdyServer(
  53       const net::HostPortPair& host_port_pair);
  54
  55   // Debugging to simulate presence of an AlternateProtocol.
  56   // If we don't have an alternate protocol in the map for any given host/port
  57   // pair, force this ProtocolPortPair.
  58   static void ForceAlternateProtocol(const AlternateProtocolInfo& pair);
  59   static void DisableForcedAlternateProtocol();
  60
  61   // Returns the canonical host suffix for |server|, or std::string() if none
  62   // exists.
  63   std::string GetCanonicalSuffix(const net::HostPortPair& server);
  64
  65   // -----------------------------
  66   // HttpServerProperties methods:
  67   // -----------------------------
  68
  69   // Gets a weak pointer for this object.
  70   virtual base::WeakPtr<HttpServerProperties> GetWeakPtr() OVERRIDE;
  71
  72   // Deletes all data.
  73   virtual void Clear() OVERRIDE;
  74
  75   // Returns true if |server| supports SPDY.
  76   virtual bool SupportsSpdy(const HostPortPair& server) OVERRIDE;
  77
  78   // Add |server| into the persistent store.
  79   virtual void SetSupportsSpdy(const HostPortPair& server,
  80                                bool support_spdy) OVERRIDE;
  81
  82   // Returns true if |server| has an Alternate-Protocol header.
  83   virtual bool HasAlternateProtocol(const HostPortPair& server) OVERRIDE;
  84
  85   // Returns the Alternate-Protocol and port for |server|.
  86   // HasAlternateProtocol(server) must be true.
  87   virtual AlternateProtocolInfo GetAlternateProtocol(
  88       const HostPortPair& server) OVERRIDE;
  89
  90   // Sets the Alternate-Protocol for |server|.
  91   virtual void SetAlternateProtocol(
  92       const HostPortPair& server,
  93       uint16 alternate_port,
  94       AlternateProtocol alternate_protocol,
  95       double probability) OVERRIDE;
  96
  97   // Sets the Alternate-Protocol for |server| to be BROKEN.
  98   virtual void SetBrokenAlternateProtocol(const HostPortPair& server) OVERRIDE;
  99
 100   // Returns true if Alternate-Protocol for |server| was recently BROKEN.
 101   virtual bool WasAlternateProtocolRecentlyBroken(
 102       const HostPortPair& server) OVERRIDE;
 103
 104   // Confirms that Alternate-Protocol for |server| is working.
 105   virtual void ConfirmAlternateProtocol(const HostPortPair& server) OVERRIDE;
 106
 107   // Clears the Alternate-Protocol for |server|.
 108   virtual void ClearAlternateProtocol(const HostPortPair& server) OVERRIDE;
 109
 110   // Returns all Alternate-Protocol mappings.
 111   virtual const AlternateProtocolMap& alternate_protocol_map() const OVERRIDE;
 112
 113   virtual void SetAlternateProtocolExperiment(
 114       AlternateProtocolExperiment experiment) OVERRIDE;
 115
 116   virtual void SetAlternateProtocolProbabilityThreshold(
 117       double threshold) OVERRIDE;
 118
 119   virtual AlternateProtocolExperiment GetAlternateProtocolExperiment()
 120       const OVERRIDE;
 121
 122   // Gets a reference to the SettingsMap stored for a host.
 123   // If no settings are stored, returns an empty SettingsMap.
 124   virtual const SettingsMap& GetSpdySettings(
 125       const HostPortPair& host_port_pair) OVERRIDE;
 126
 127   // Saves an individual SPDY setting for a host. Returns true if SPDY setting
 128   // is to be persisted.
 129   virtual bool SetSpdySetting(const HostPortPair& host_port_pair,
 130                               SpdySettingsIds id,
 131                               SpdySettingsFlags flags,
 132                               uint32 value) OVERRIDE;
 133
 134   // Clears all entries in |spdy_settings_map_| for a host.
 135   virtual void ClearSpdySettings(const HostPortPair& host_port_pair) OVERRIDE;
 136
 137   // Clears all entries in |spdy_settings_map_|.
 138   virtual void ClearAllSpdySettings() OVERRIDE;
 139
 140   // Returns all persistent SPDY settings.
 141   virtual const SpdySettingsMap& spdy_settings_map() const OVERRIDE;
 142
 143   virtual void SetServerNetworkStats(const HostPortPair& host_port_pair,
 144                                      NetworkStats stats) OVERRIDE;
 145
 146   virtual const NetworkStats* GetServerNetworkStats(
 147       const HostPortPair& host_port_pair) const OVERRIDE;
 148
 149  private:
 150   // |spdy_servers_map_| has flattened representation of servers (host, port)
 151   // that either support or not support SPDY protocol.
 152   typedef base::MRUCache<std::string, bool> SpdyServerHostPortMap;
 153   typedef std::map<HostPortPair, NetworkStats> ServerNetworkStatsMap;
 154   typedef std::map<HostPortPair, HostPortPair> CanonicalHostMap;
 155   typedef std::vector<std::string> CanonicalSufficList;
 156   // List of broken host:ports and the times when they can be expired.
 157   struct BrokenAlternateProtocolEntry {
 158     HostPortPair server;
 159     base::TimeTicks when;
 160   };
 161   typedef std::list<BrokenAlternateProtocolEntry>
 162       BrokenAlternateProtocolList;
 163   // Map from host:port to the number of times alternate protocol has
 164   // been marked broken.
 165   typedef std::map<HostPortPair, int> BrokenAlternateProtocolMap;
 166
 167   // Return the canonical host for |server|, or end if none exists.
 168   CanonicalHostMap::const_iterator GetCanonicalHost(HostPortPair server) const;
 169
 170   void RemoveCanonicalHost(const HostPortPair& server);
 171   void ExpireBrokenAlternateProtocolMappings();
 172   void ScheduleBrokenAlternateProtocolMappingsExpiration();
 173
 174   SpdyServerHostPortMap spdy_servers_map_;
 175
 176   AlternateProtocolMap alternate_protocol_map_;
 177   BrokenAlternateProtocolList broken_alternate_protocol_list_;
 178   BrokenAlternateProtocolMap broken_alternate_protocol_map_;
 179   AlternateProtocolExperiment alternate_protocol_experiment_;
 180
 181   SpdySettingsMap spdy_settings_map_;
 182   ServerNetworkStatsMap server_network_stats_map_;
 183   // Contains a map of servers which could share the same alternate protocol.
 184   // Map from a Canonical host/port (host is some postfix of host names) to an
 185   // actual origin, which has a plausible alternate protocol mapping.
 186   CanonicalHostMap canonical_host_to_origin_map_;
 187   // Contains list of suffixes (for exmaple ".c.youtube.com",
 188   // ".googlevideo.com", ".googleusercontent.com") of canoncial hostnames.
 189   CanonicalSufficList canoncial_suffixes_;
 190
 191   double alternate_protocol_probability_threshold_;
 192
 193   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 194
 195   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
 196 };
 197
 198 }  // namespace net
 199
 200 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_