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      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 // Indicate that if the request fails at the network level in a way that
     29 // indicates the source is unreachable, the request should fail over
     30 // to as if LOAD_PREFERRING_CACHE had been set.
     31 LOAD_FLAG(FROM_CACHE_IF_OFFLINE, 1 << 4)
     32 
     33 // This is a navigation that will not use the cache at all.  It does not
     34 // impact the HTTP request headers.
     35 LOAD_FLAG(DISABLE_CACHE, 1 << 5)
     36 
     37 // This is a navigation that will not be intercepted by any registered
     38 // URLRequest::Interceptors.
     39 LOAD_FLAG(DISABLE_INTERCEPT, 1 << 6)
     40 
     41 // If present, upload progress messages should be provided to initiator.
     42 LOAD_FLAG(ENABLE_UPLOAD_PROGRESS, 1 << 7)
     43 
     44 // If present, collect load timing for the request.
     45 LOAD_FLAG(ENABLE_LOAD_TIMING, 1 << 8)
     46 
     47 // If present, ignores certificate mismatches with the domain name.
     48 // (The default behavior is to trigger an OnSSLCertificateError callback.)
     49 LOAD_FLAG(IGNORE_CERT_COMMON_NAME_INVALID, 1 << 9)
     50 
     51 // If present, ignores certificate expiration dates
     52 // (The default behavior is to trigger an OnSSLCertificateError callback).
     53 LOAD_FLAG(IGNORE_CERT_DATE_INVALID, 1 << 10)
     54 
     55 // If present, trusts all certificate authorities
     56 // (The default behavior is to trigger an OnSSLCertificateError callback).
     57 LOAD_FLAG(IGNORE_CERT_AUTHORITY_INVALID, 1 << 11)
     58 
     59 // If present, causes certificate revocation checks to be skipped on secure
     60 // connections.
     61 LOAD_FLAG(DISABLE_CERT_REVOCATION_CHECKING, 1 << 12)
     62 
     63 // If present, ignores wrong key usage of the certificate
     64 // (The default behavior is to trigger an OnSSLCertificateError callback).
     65 LOAD_FLAG(IGNORE_CERT_WRONG_USAGE, 1 << 13)
     66 
     67 // This load will not make any changes to cookies, including storing new
     68 // cookies or updating existing ones.
     69 LOAD_FLAG(DO_NOT_SAVE_COOKIES, 1 << 14)
     70 
     71 // Do not resolve proxies. This override is used when downloading PAC files
     72 // to avoid having a circular dependency.
     73 LOAD_FLAG(BYPASS_PROXY, 1 << 15)
     74 
     75 // Indicate this request is for a download, as opposed to viewing.
     76 LOAD_FLAG(IS_DOWNLOAD, 1 << 16)
     77 
     78 // Requires EV certificate verification.
     79 LOAD_FLAG(VERIFY_EV_CERT, 1 << 17)
     80 
     81 // This load will not send any cookies.
     82 LOAD_FLAG(DO_NOT_SEND_COOKIES, 1 << 18)
     83 
     84 // This load will not send authentication data (user name/password)
     85 // to the server (as opposed to the proxy).
     86 LOAD_FLAG(DO_NOT_SEND_AUTH_DATA, 1 << 19)
     87 
     88 // This should only be used for testing (set by HttpNetworkTransaction).
     89 LOAD_FLAG(IGNORE_ALL_CERT_ERRORS, 1 << 20)
     90 
     91 // Indicate that this is a top level frame, so that we don't assume it is a
     92 // subresource and speculatively pre-connect or pre-resolve when a referring
     93 // page is loaded.
     94 LOAD_FLAG(MAIN_FRAME, 1 << 21)
     95 
     96 // Indicate that this is a sub frame, and hence it might have subresources that
     97 // should be speculatively resolved, or even speculatively preconnected.
     98 LOAD_FLAG(SUB_FRAME, 1 << 22)
     99 
    100 // If present, intercept actual request/response headers from network stack
    101 // and report them to renderer. This includes cookies, so the flag is only
    102 // respected if renderer has CanReadRawCookies capability in the security
    103 // policy.
    104 LOAD_FLAG(REPORT_RAW_HEADERS, 1 << 23)
    105 
    106 // Indicates that this load was motivated by the rel=prefetch feature,
    107 // and is (in theory) not intended for the current frame.
    108 LOAD_FLAG(PREFETCH, 1 << 24)
    109 
    110 // Indicates that this is a load that ignores limits and should complete
    111 // immediately.
    112 LOAD_FLAG(IGNORE_LIMITS, 1 << 25)
    113 
    114 // Suppress login prompts for this request. Cached credentials or
    115 // default credentials may still be used for authentication.
    116 LOAD_FLAG(DO_NOT_PROMPT_FOR_LOGIN, 1 << 26)
    117 
    118 // Indicates that the operation is somewhat likely to be due to an
    119 // explicit user action. This can be used as a hint to treat the
    120 // request with higher priority.
    121 LOAD_FLAG(MAYBE_USER_GESTURE, 1 << 27)
    122 
    123 // Indicates that the username:password portion of the URL should not
    124 // be honored, but that other forms of authority may be used.
    125 LOAD_FLAG(DO_NOT_USE_EMBEDDED_IDENTITY, 1 << 28)
    126 
    127