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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request

  3. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    A specific flow to a user agent has failed, although other flows may succeed. This response is intended for use between proxy devices, and should not be seen by an endpoint (and if it is seen by one, should be treated as a 400 Bad Request response). [16]: §11.5 433 Anonymity Disallowed The request has been rejected because it was anonymous. [17]

  4. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    Google Chrome included similar functionality, where the 404 is replaced with alternative suggestions generated by Google algorithms, if the page is under 512 bytes in size. [11] Another problem is that if the page does not provide a favicon , and a separate custom 404-page exists, extra traffic and longer loading times will be generated on ...

  5. Post/Redirect/Get - Wikipedia

    en.wikipedia.org/wiki/Post/Redirect/Get

    Diagram of a double POST problem encountered in user agents. Diagram of the double POST problem above being solved by PRG. Post/Redirect/Get (PRG) is a web development design pattern that lets the page shown after a form submission be reloaded, shared, or bookmarked without ill effects, such as submitting the form another time.

  6. List of Google April Fools' Day jokes - Wikipedia

    en.wikipedia.org/wiki/List_of_Google_April_Fools...

    The Google Code Search homepage [58] is featuring LOLCODE examples. CADIE is set to write code by itself [59] based on specified features; however all that is returned is bad code or witty criticisms of the user's request and choice of programming language, recommending the use of INTERCAL.

  7. Backspace - Wikipedia

    en.wikipedia.org/wiki/Backspace

    An early typewriter with a backspacer[sic] key.(Blickensderfer Model 7)Although the term "backspace" is the traditional name of the key which steps the carriage back and/or [note 3] deletes the previous character, typically to the left of the cursor, the actual key may be labeled in a variety of ways, for example delete, [1] erase, [note 4] or with a left pointing arrow. [3]

  8. POST (HTTP) - Wikipedia

    en.wikipedia.org/wiki/POST_(HTTP)

    In computing, POST is a request method supported by HTTP used by the World Wide Web. By design, the POST request method requests that a web server accepts the data enclosed in the body of the request message, most likely for storing it. [1] It is often used when uploading a file or when submitting a completed web form.

  9. Control character - Wikipedia

    en.wikipedia.org/wiki/Control_character

    0x08 (backspace, BS, \b, ^H), may overprint the previous character. 0x09 (horizontal tab, HT, \t, ^I), moves the printing position right to the next tab stop. 0x0A (line feed, LF, \n, ^J), moves the print head down one line, or to the left edge and down. Used as the end of line marker in most UNIX systems and variants.