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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    A WebDAV request may contain many sub-requests involving file operations, requiring a long time to complete the request. This code indicates that the server has received and is processing the request, but no response is available yet. [3] This prevents the client from timing out and assuming the request was lost. The status code is deprecated. [4]

  3. HTTP 403 - Wikipedia

    en.wikipedia.org/wiki/HTTP_403

    IP restrictions: The server may also restrict access to specific IP addresses or IP ranges. If the user's IP address is not included in the list of permitted addresses, a 403 status code is returned. Server configuration: The server's configuration can be set to prohibit access to certain files, directories, or areas of the website.

  4. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    العربية; अवधी; বাংলা; भोजपुरी; Български; Català; Čeština; Dansk; Deutsch; Ελληνικά; Español; Esperanto

  5. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    This is a list of Simple Mail Transfer Protocol (SMTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. Unless otherwise stated, all status codes described here is part of the current SMTP standard, RFC 5321. The message phrases shown are typical, but any human-readable alternative ...

  6. HTTP 402 - Wikipedia

    en.wikipedia.org/wiki/HTTP_402

    The 402 status code is considered non-standard and was introduced to extend the HTTP protocol's capabilities beyond the standard set of status codes. It provides a clear indication to the client that they need to take action to complete the payment process before they can access the requested resource.

  7. Google Web Server - Wikipedia

    en.wikipedia.org/wiki/Google_Web_Server

    In May, 2015, GWS was ranked as the fourth most popular web server on the internet after Apache, nginx and Microsoft IIS, powering an estimated 7.95% of active websites. [4] Web page requests on most Google pages provide "gws" (without a version number) in the HTTP header as an indication of the web server software being used.

  8. HTTP 502 - Wikipedia

    en.wikipedia.org/wiki/HTTP_502

    According to the specification, the 502 status code indicates that the server, while acting as a gateway or proxy, received an invalid response from an upstream server. The Occurrence [ edit ]

  9. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    The server did not understand an event package specified in an Event header field. [4]: §7.3.2 [6]: §8.3.2 491 Request Pending Server has some pending request from the same dialog. [1]: §21.4.27 493 Undecipherable Request contains an encrypted MIME body, which recipient can not decrypt. [1]: §21.4.28 494 Security Agreement Required