net/base/load_flags_list.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 // This is the list of load flags and their values. For the enum values,
   6 // include the file "net/base/load_flags.h".
   7 //
   8 // Here we define the values using a macro LOAD_FLAG, so it can be
   9 // expanded differently in some places (for example, to automatically
  10 // map a load flag value to its symbolic name).
  11
  12 LOAD_FLAG(NORMAL, 0)
  13
  14 // This is "normal reload", meaning an if-none-match/if-modified-since query
  15 LOAD_FLAG(VALIDATE_CACHE, 1 << 0)
  16
  17 // This is "shift-reload", meaning a "pragma: no-cache" end-to-end fetch
  18 LOAD_FLAG(BYPASS_CACHE, 1 << 1)
  19
  20 // This is a back/forward style navigation where the cached content should
  21 // be preferred over any protocol specific cache validation.
  22 LOAD_FLAG(PREFERRING_CACHE, 1 << 2)
  23
  24 // This is a navigation that will fail if it cannot serve the requested
  25 // resource from the cache (or some equivalent local store).
  26 LOAD_FLAG(ONLY_FROM_CACHE, 1 << 3)
  27
  28 // This is a navigation that will not use the cache at all.  It does not
  29 // impact the HTTP request headers.
  30 LOAD_FLAG(DISABLE_CACHE, 1 << 4)
  31
  32 // If present, causes certificate revocation checks to be skipped on secure
  33 // connections.
  34 LOAD_FLAG(DISABLE_CERT_REVOCATION_CHECKING, 1 << 5)
  35
  36 // This load will not make any changes to cookies, including storing new
  37 // cookies or updating existing ones.
  38 LOAD_FLAG(DO_NOT_SAVE_COOKIES, 1 << 6)
  39
  40 // Do not resolve proxies. This override is used when downloading PAC files
  41 // to avoid having a circular dependency.
  42 LOAD_FLAG(BYPASS_PROXY, 1 << 7)
  43
  44 // Requires EV certificate verification.
  45 LOAD_FLAG(VERIFY_EV_CERT, 1 << 8)
  46
  47 // This load will not send any cookies.
  48 LOAD_FLAG(DO_NOT_SEND_COOKIES, 1 << 9)
  49
  50 // This load will not send authentication data (user name/password)
  51 // to the server (as opposed to the proxy).
  52 LOAD_FLAG(DO_NOT_SEND_AUTH_DATA, 1 << 10)
  53
  54 // This should only be used for testing (set by HttpNetworkTransaction).
  55 LOAD_FLAG(IGNORE_ALL_CERT_ERRORS, 1 << 11)
  56
  57 // Indicate that this is a top level frame, so that we don't assume it is a
  58 // subresource and speculatively pre-connect or pre-resolve when a referring
  59 // page is loaded.
  60 LOAD_FLAG(MAIN_FRAME, 1 << 12)
  61
  62 // Indicates that this load was motivated by the rel=prefetch feature,
  63 // and is (in theory) not intended for the current frame.
  64 LOAD_FLAG(PREFETCH, 1 << 13)
  65
  66 // Indicates that this is a load that ignores limits and should complete
  67 // immediately.
  68 LOAD_FLAG(IGNORE_LIMITS, 1 << 14)
  69
  70 // Indicates that the operation is somewhat likely to be due to an
  71 // explicit user action. This can be used as a hint to treat the
  72 // request with higher priority.
  73 LOAD_FLAG(MAYBE_USER_GESTURE, 1 << 15)
  74
  75 // Indicates that the username:password portion of the URL should not
  76 // be honored, but that other forms of authority may be used.
  77 LOAD_FLAG(DO_NOT_USE_EMBEDDED_IDENTITY, 1 << 16)
  78
  79 // The creator of this URLRequest wishes to receive stale responses when allowed
  80 // by the "Cache-Control: stale-while-revalidate" directive and is able to issue
  81 // an async revalidation to update the cache.
  82 LOAD_FLAG(SUPPORT_ASYNC_REVALIDATION, 1 << 17)