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  2. List of HTTP header fields - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_header_fields

    Tells the browser to refresh the page or redirect to a different URL, after a given number of seconds (0 meaning immediately); or when a new resource has been created [clarification needed]. 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 ...

  3. HTTP referer - Wikipedia

    en.wikipedia.org/wiki/HTTP_referer

    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.

  4. Find delivery delays or identify the sender in AOL Mail

    help.aol.com/articles/use-full-headers-to-find...

    View the full headers to find out where an email was delayed or if the real sender disguised their email address. View the full header of an email. 1. Click an email to open it. 2. Click the More drop-down in the top menu. 3. Select View Message Source. Use header info to investigate problems. See where an email was delayed

  5. HTTP - Wikipedia

    en.wikipedia.org/wiki/HTTP

    A client request (consisting in this case of the request line and a few headers that can be reduced to only the "Host: hostname" header) is followed by a blank line, so that the request ends with a double end of line, each in the form of a carriage return followed by a line feed.

  6. Use full headers to find delivery delays or a forged email's ...

    help.aol.com/articles/use-full-headers-to-find...

    Delivery records in the full headers show when each computer received the message. The first delivery is at the bottom; the newest at the top. If you find a large time gap between delivery records, that shows which computer delayed before sending it to the next computer. 1. View the full header as described above. 2.

  7. Memento Project - Wikipedia

    en.wikipedia.org/wiki/Memento_Project

    The Last-Modified header provided by HTTP [4] does not necessarily reflect when a particular version of a web page came into existence. Also, the Last-Modified header may not exist in some cases. To provide more information, the Memento-Datetime header has been introduced to indicate when a specific representation of a web page was observed on ...

  8. Find and remove unusual activity on your AOL account

    help.aol.com/articles/find-and-remove-unusual...

    If you see something you don't recognize, click Sign out or Remove next to it, then immediately change your password. • Recent activity - Devices or browsers that recently signed in. • Apps connected to your account - Apps you've given permission to access your info. • Recent account changes - Shows the last 3

  9. Web cache - Wikipedia

    en.wikipedia.org/wiki/Web_cache

    For example, if the response has a Last-Modified header, a cache can make a conditional request using the If-Modified-Since header to see if it has changed. The ETag (entity tag) mechanism also allows for both strong and weak validation.