The

HTTP The Hypertext Transfer Protocol (HTTP) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide We ...

response status code 303 See Other is a way to redirect web applications to a new URI, particularly after a

HTTP POST 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 accept the data enclosed in the body of the request message, most likely for storing it. It is oft ...

has been performed, since RFC 2616 (HTTP 1.1). According to RFC 7231, which obsoletes RFC 2616, "A 303 response to a GET request indicates that the origin server does not have a representation of the target resource that can be transferred by the server over HTTP. However, the Location field value refers to a resource that is descriptive of the target resource, such that making a retrieval request on that other resource might result in a representation that is useful to recipients without implying that it represents the original target resource." This status code should be used with the

location In geography, location or place are used to denote a region (point, line, or area) on Earth's surface or elsewhere. The term ''location'' generally implies a higher degree of certainty than ''place'', the latter often indicating an entity with an ...

header, as described below. If a server responds to a POST or other non-idempotent request with a ''303 See Other'' response and a value for the location header, the client is expected to obtain the resource mentioned in the location header using the GET method; to trigger a request to the target resource using the same method, the server is expected to provide a ''307 Temporary Redirect'' response. 303 See Other has been proposed as one way of responding to a request for a URI that identifies a ''real-world object'' according to Semantic Web theory (the other being the use of ''hash URIs''). For example, if http://www.example.com/id/alice identifies a person, Alice, then it would be inappropriate for a server to respond to a GET request with 200 OK, as the server could not deliver Alice herself. Instead the server would issue a 303 See Other response which redirected to a separate URI providing a description of the person Alice. 303 See Other can be used for other purposes. For example, when building a

REST Rest or REST may refer to: Relief from activity * Sleep ** Bed rest * Kneeling * Lying (position) * Sitting * Squatting position Structural support * Structural support ** Rest (cue sports) ** Armrest ** Headrest ** Footrest Arts and enter ...

ful

web API A web API is an application programming interface for either a web server or a web browser. It is a web development concept, usually limited to a web application's client-side (including any web frameworks being used), and thus usually does not ...

that needs to return to the caller immediately but continue executing asynchronously (such as a long-lived image conversion), the web API can provide a status check URI that allows the original client who requested the conversion to check on the conversion's status. This status check web API should return 303 See Other to the caller when the task is complete, along with a URI from which to retrieve the result in the ''Location''

HTTP header The Hypertext Transfer Protocol (HTTP) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, w ...

field.

Example

Client request: POST / HTTP/1.1 Host: www.example.com Server response: HTTP/1.1 303 See Other Location: http://example.org/other

References

Hypertext Transfer Protocol status codes {{web-stub

Example

See also

References