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cookie-options.md

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Cookie Options

For your convenience we've unified the options for jetta.cookieLib and methods for jetta.cookieManager instances.

Some options are not applicable in all situations, but does not hurt if used. Defaults can be found in jetta.defaults.cookie.

  • allowExpiredSetCookie BOOLEAN - if true, functions that parse and add cookies from Set-Cookie headers will not throw if Expires or Max-Age signifies that something has expired
  • fromHttpApi BOOLEAN - should be false if from "non-HTTP API" according to RFC 6265.
    • Here are some examples from RFC 6265 as to what this means:
      • A web browser API that exposes cookies to scripts
      • HTML's document.cookie API
  • isSecureEnv BOOLEAN - if the request is made in a secure environment, such as HTTPS
  • isTopLevelBrowsingContext BOOLEAN - means 'the address bar's URL would changes for this request'.
  • preferredErrorLanguage STRING - as an ISO 639-1 code
    • See jetta.JettaError for details
  • publicSuffix instanceof jetta.PublicSuffix | null - a jetta.PublicSuffix instance used to check if a cookie's domain is a public suffix
    • If null or not given, public suffixes will not be checked (always provided when called via jetta.CookieManager instance)
  • requestMethod STRING - the request's HTTP method (i.e. 'GET', 'POST', etc.)
  • requestURL STRING - the URL where cookies are sent or received
  • thirdPartyCookiesAllowed BOOLEAN - when topLevelURL option is used, allow third-party cookies
    • A third-party cookie is when the cookie's domain does not match the hostname of the topLevelURL
  • topLevelURL STRING - the topLevelURL of the context

Determining isTopLevelBrowsingContext, requestURL, and topLevelURL

Say you are visiting example.com and example.com has an iframe for some-other-example.com. In this case: requestURL is 'some-other-example.com', topLevelURL is 'example.com', and isTopLevelBrowsingContext is false.

Notice that isTopLevelBrowsingContext is not inferred (for security reasons) via checking if requestURL is in topLevelURL on the domain level. Here is an example for how this is not always true:

  • You request 'example.com'
  • 'example.com' has an iframe 'some-other-example.com'
  • 'some-other-example.com' pulls images from 'example.com'