net/http/http_response_info.h

   1 // Copyright (c) 2011 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_RESPONSE_INFO_H_
   6 #define NET_HTTP_HTTP_RESPONSE_INFO_H_
   7
   8 #include <string>
   9
  10 #include "base/time/time.h"
  11 #include "net/base/host_port_pair.h"
  12 #include "net/base/net_export.h"
  13 #include "net/http/http_vary_data.h"
  14 #include "net/socket/next_proto.h"
  15 #include "net/ssl/ssl_info.h"
  16
  17 class Pickle;
  18
  19 namespace net {
  20
  21 class AuthChallengeInfo;
  22 class HttpResponseHeaders;
  23 class IOBufferWithSize;
  24 class SSLCertRequestInfo;
  25
  26 class NET_EXPORT HttpResponseInfo {
  27  public:
  28   // Describes the kind of connection used to fetch this response.
  29   //
  30   // NOTE: This is persisted to the cache, so make sure not to reorder
  31   // these values.
  32   //
  33   // TODO(akalin): Better yet, just use a string instead of an enum,
  34   // like |npn_negotiated_protocol|.
  35   enum ConnectionInfo {
  36     CONNECTION_INFO_UNKNOWN = 0,
  37     CONNECTION_INFO_HTTP1 = 1,
  38     CONNECTION_INFO_DEPRECATED_SPDY2 = 2,
  39     CONNECTION_INFO_SPDY3 = 3,
  40     CONNECTION_INFO_SPDY4 = 4,
  41     CONNECTION_INFO_QUIC1_SPDY3 = 5,
  42     NUM_OF_CONNECTION_INFOS,
  43   };
  44
  45   HttpResponseInfo();
  46   HttpResponseInfo(const HttpResponseInfo& rhs);
  47   ~HttpResponseInfo();
  48   HttpResponseInfo& operator=(const HttpResponseInfo& rhs);
  49   // Even though we could get away with the copy ctor and default operator=,
  50   // that would prevent us from doing a bunch of forward declaration.
  51
  52   // Initializes from the representation stored in the given pickle.
  53   bool InitFromPickle(const Pickle& pickle, bool* response_truncated);
  54
  55   // Call this method to persist the response info.
  56   void Persist(Pickle* pickle,
  57                bool skip_transient_headers,
  58                bool response_truncated) const;
  59
  60   // The following is only defined if the request_time member is set.
  61   // If this resource was found in the cache, then this bool is set, and
  62   // request_time may corresponds to a time "far" in the past.  Note that
  63   // stale content (perhaps un-cacheable) may be fetched from cache subject to
  64   // the load flags specified on the request info.  For example, this is done
  65   // when a user presses the back button to re-render pages, or at startup,
  66   // when reloading previously visited pages (without going over the network).
  67   // Note also that under normal circumstances, was_cached is set to the correct
  68   // value even if the request fails.
  69   bool was_cached;
  70
  71   // True if the request was fetched from cache rather than the network
  72   // because of a LOAD_FROM_CACHE_IF_OFFLINE flag when the system
  73   // was unable to contact the server.
  74   bool server_data_unavailable;
  75
  76   // True if the request accessed the network in the process of retrieving
  77   // data.
  78   bool network_accessed;
  79
  80   // True if the request was fetched over a SPDY channel.
  81   bool was_fetched_via_spdy;
  82
  83   // True if the npn was negotiated for this request.
  84   bool was_npn_negotiated;
  85
  86   // True if the request was fetched via an explicit proxy.  The proxy could
  87   // be any type of proxy, HTTP or SOCKS.  Note, we do not know if a
  88   // transparent proxy may have been involved. If true, |proxy_server| contains
  89   // the name of the proxy server that was used.
  90   bool was_fetched_via_proxy;
  91   HostPortPair proxy_server;
  92
  93   // Whether the request use http proxy or server authentication.
  94   bool did_use_http_auth;
  95
  96   // Remote address of the socket which fetched this resource.
  97   //
  98   // NOTE: If the response was served from the cache (was_cached is true),
  99   // the socket address will be set to the address that the content came from
 100   // originally.  This is true even if the response was re-validated using a
 101   // different remote address, or if some of the content came from a byte-range
 102   // request to a different address.
 103   HostPortPair socket_address;
 104
 105   // Protocol negotiated with the server.
 106   std::string npn_negotiated_protocol;
 107
 108   // The type of connection used for this response.
 109   ConnectionInfo connection_info;
 110
 111   // The time at which the request was made that resulted in this response.
 112   // For cached responses, this is the last time the cache entry was validated.
 113   base::Time request_time;
 114
 115   // The time at which the response headers were received.  For cached
 116   // this is the last time the cache entry was validated.
 117   base::Time response_time;
 118
 119   // If the response headers indicate a 401 or 407 failure, then this structure
 120   // will contain additional information about the authentication challenge.
 121   scoped_refptr<AuthChallengeInfo> auth_challenge;
 122
 123   // The SSL client certificate request info.
 124   // TODO(wtc): does this really belong in HttpResponseInfo?  I put it here
 125   // because it is similar to |auth_challenge|, but unlike HTTP authentication
 126   // challenge, client certificate request is not part of an HTTP response.
 127   scoped_refptr<SSLCertRequestInfo> cert_request_info;
 128
 129   // The SSL connection info (if HTTPS).
 130   SSLInfo ssl_info;
 131
 132   // The parsed response headers and status line.
 133   scoped_refptr<HttpResponseHeaders> headers;
 134
 135   // The "Vary" header data for this response.
 136   HttpVaryData vary_data;
 137
 138   // Any metadata asociated with this resource's cached data.
 139   scoped_refptr<IOBufferWithSize> metadata;
 140
 141   static ConnectionInfo ConnectionInfoFromNextProto(NextProto next_proto);
 142
 143   static std::string ConnectionInfoToString(ConnectionInfo connection_info);
 144 };
 145
 146 }  // namespace net
 147
 148 #endif  // NET_HTTP_HTTP_RESPONSE_INFO_H_