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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 ...
In contrast, one-way computer communication, which is like the push-to-talk or "barge in" feature found on some phones and two-way radios, sends a message without waiting for a response. Sending an email is an example of one-way communication, and another example are fieldbus sensors, such as most CAN bus sensors, which periodically and ...
The client only has to understand the response based on the relevant application protocol, i.e. the content and the formatting of the data for the requested service. Clients and servers exchange messages in a request–response messaging pattern. The client sends a request, and the server returns a response.
The encoded-word format is not used for the names of the headers fields (for example Subject). These names are usually English terms and always in ASCII in the raw message. When viewing a message with a non-English email client, the header field names might be translated by the client.
The term message exchange pattern has an extended meaning within the Simple Object Access protocol . [2] [3] SOAP MEP types include: In-Only: This is equivalent to one-way. A standard one-way messaging exchange where the consumer sends a message to the provider that provides do not send any type of response.
It, however, is only defined for the request header. Its meaning in a response header is not specified. [77] The behavior of Pragma: no-cache in a response is implementation specific. While some user agents do pay attention to this field in responses, [78] the HTTP/1.1 RFC specifically warns against relying on this behavior.
The client submits an HTTP request message to the server. The server, which provides resources such as HTML files and other content or performs other functions on behalf of the client, returns a response message to the client. The response contains completion status information about the request and may also contain requested content in its ...
Standard response for successful HTTP requests. The actual response will depend on the request method used. In a GET request, the response will contain an entity corresponding to the requested resource. In a POST request, the response will contain an entity describing or containing the result of the action. 201 Created