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This class of status code indicates the client must take additional action to complete the request. Many of these status codes are used in URL redirection. [2]A user agent may carry out the additional action with no user interaction only if the method used in the second request is GET or HEAD.
Header introduced by Netscape in 1995 and became a de facto standard supported by most web browsers. Eventually standardized in the HTML Living Standard in 2017. [64] Refresh: 5; url= Report-To [65] Instructs the user agent to store reporting endpoints for an origin.
The HPKP policy specifies hashes of the subject public key info of one of the certificates in the website's authentic X.509 public key certificate chain (and at least one backup key) in pin-sha256 directives, and a period of time during which the user agent shall enforce public key pinning in max-age directive, optional includeSubDomains ...
The following header names are in use as part of experimental CSP implementations: [3] Content-Security-Policy – standard header name proposed by the W3C document. Google Chrome supports this as of version 25. [7] Firefox supports this as of version 23, [8] released on 6 August 2013. [9] WebKit supports this as of version 528 (nightly build ...
In HTTP, "Referer" (a misspelling of "Referrer" [1]) is an optional HTTP header field that identifies the address of the web page (i.e., the URI or IRI) from which the resource has been requested. By checking the referrer, the server providing the new web page can see where the request originated.
This will cause the page to render in Chrome Frame for users who have it installed, without changing it for users who have not. In February 2010, Google Chrome Frame was updated to also support deployment by HTTP headers, with a number of advantages, such as simplified sitewide support and support of the application/xhtml+xml MIME type even on Internet Explorer which normally does not support ...
In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic <credentials>, where <credentials> is the Base64 encoding of ID and password joined by a single colon :. It was originally implemented by Ari Luotonen at CERN in 1993 [1] and defined in the HTTP 1.0 specification in 1996. [2]
The privacy policy can be retrieved as an XML file or can be included, in compact form, in the HTTP header. The location of the XML policy file that applies to a given document can be: specified in the HTTP header of the document; specified in the HTML head of the document