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This is a list of Hypertext Transfer Protocol (HTTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. It includes codes from IETF Request for Comments (RFCs), other specifications, and some additional codes used in some common applications of the HTTP. The first digit of the status ...
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 ]
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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 ...
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. This can be ...
Their development typically involves server-side coding, client-side coding and database technology. The programming languages applied to deliver such dynamic web content vary vastly between sites. Programming languages used in most popular websites*
Amazon CloudFront is a content delivery network (CDN) operated by Amazon Web Services.The content delivery network was created to provide a globally-distributed network of proxy servers to cache content, such as web videos or other bulky media, more locally to consumers, to improve access speed for downloading the content.
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