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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, ignores certificate mismatches with the domain name.
     45 // (The default behavior is to trigger an OnSSLCertificateError callback.)
     46 LOAD_FLAG(IGNORE_CERT_COMMON_NAME_INVALID, 1 << 8)
     47 
     48 // If present, ignores certificate expiration dates
     49 // (The default behavior is to trigger an OnSSLCertificateError callback).
     50 LOAD_FLAG(IGNORE_CERT_DATE_INVALID, 1 << 9)
     51 
     52 // If present, trusts all certificate authorities
     53 // (The default behavior is to trigger an OnSSLCertificateError callback).
     54 LOAD_FLAG(IGNORE_CERT_AUTHORITY_INVALID, 1 << 10)
     55 
     56 // If present, causes certificate revocation checks to be skipped on secure
     57 // connections.
     58 LOAD_FLAG(DISABLE_CERT_REVOCATION_CHECKING, 1 << 11)
     59 
     60 // If present, ignores wrong key usage of the certificate
     61 // (The default behavior is to trigger an OnSSLCertificateError callback).
     62 LOAD_FLAG(IGNORE_CERT_WRONG_USAGE, 1 << 12)
     63 
     64 // This load will not make any changes to cookies, including storing new
     65 // cookies or updating existing ones.
     66 LOAD_FLAG(DO_NOT_SAVE_COOKIES, 1 << 13)
     67 
     68 // Do not resolve proxies. This override is used when downloading PAC files
     69 // to avoid having a circular dependency.
     70 LOAD_FLAG(BYPASS_PROXY, 1 << 14)
     71 
     72 // Indicate this request is for a download, as opposed to viewing.
     73 LOAD_FLAG(IS_DOWNLOAD, 1 << 15)
     74 
     75 // Requires EV certificate verification.
     76 LOAD_FLAG(VERIFY_EV_CERT, 1 << 16)
     77 
     78 // This load will not send any cookies.
     79 LOAD_FLAG(DO_NOT_SEND_COOKIES, 1 << 17)
     80 
     81 // This load will not send authentication data (user name/password)
     82 // to the server (as opposed to the proxy).
     83 LOAD_FLAG(DO_NOT_SEND_AUTH_DATA, 1 << 18)
     84 
     85 // This should only be used for testing (set by HttpNetworkTransaction).
     86 LOAD_FLAG(IGNORE_ALL_CERT_ERRORS, 1 << 19)
     87 
     88 // Indicate that this is a top level frame, so that we don't assume it is a
     89 // subresource and speculatively pre-connect or pre-resolve when a referring
     90 // page is loaded.
     91 LOAD_FLAG(MAIN_FRAME, 1 << 20)
     92 
     93 // Indicate that this is a sub frame, and hence it might have subresources that
     94 // should be speculatively resolved, or even speculatively preconnected.
     95 LOAD_FLAG(SUB_FRAME, 1 << 21)
     96 
     97 // If present, intercept actual request/response headers from network stack
     98 // and report them to renderer. This includes cookies, so the flag is only
     99 // respected if renderer has CanReadRawCookies capability in the security
    100 // policy.
    101 LOAD_FLAG(REPORT_RAW_HEADERS, 1 << 22)
    102 
    103 // Indicates that this load was motivated by the rel=prefetch feature,
    104 // and is (in theory) not intended for the current frame.
    105 LOAD_FLAG(PREFETCH, 1 << 23)
    106 
    107 // Indicates that this is a load that ignores limits and should complete
    108 // immediately.
    109 LOAD_FLAG(IGNORE_LIMITS, 1 << 24)
    110 
    111 // Suppress login prompts for this request. Cached credentials or
    112 // default credentials may still be used for authentication.
    113 LOAD_FLAG(DO_NOT_PROMPT_FOR_LOGIN, 1 << 25)
    114 
    115 // Indicates that the operation is somewhat likely to be due to an
    116 // explicit user action. This can be used as a hint to treat the
    117 // request with higher priority.
    118 LOAD_FLAG(MAYBE_USER_GESTURE, 1 << 26)
    119 
    120 // Indicates that the username:password portion of the URL should not
    121 // be honored, but that other forms of authority may be used.
    122 LOAD_FLAG(DO_NOT_USE_EMBEDDED_IDENTITY, 1 << 27)
    123 
    124 // Send request directly to the origin if the effective proxy is the data
    125 // reduction proxy.
    126 // TODO(rcs): Remove this flag as soon as http://crbug.com/339237 is resolved.
    127 LOAD_FLAG(BYPASS_DATA_REDUCTION_PROXY, 1 << 28)
    128