Pace409Response

Abstract

Add sections about 409 Conflict response status codes to the APP draft. This Pace does not address the response format.

Status

Active. Please direct discussion to the atom-syntax list.

Rationale

Currently, some AtomAPI implementations return status code 400 when they receive a valid Atom representation that conflicts with the state on the server. Status code 400 is reserved for problems arising from malformed syntax.

Proposal

Atom Publishing Protocol

PostURI

3.1.3  Response

   The possible status codes from a POST are 201, 303, 400, 401, 404,
   409, 410, and 500.

3.1.3.x Status Code 409

   The request contained a valid Atom Entry, but it conflicts with state on the server.
   The response SHOULD contain enough for information for the user to resolve the conflict.
   [[ more about response body format ]]

EditURI

3.2.x  Response to PUT Requests

   The possible status codes from a PUT are ...409, ...

3.2.x.x Status Code 409

   The request contained a valid Atom Entry, but it conflicts with the state of the resource,
   or other state on the server. 

   For example, a server could signal that client has erred in this manner if it receives a 
   request containing an atom:id element whose value differs from that of the resource found at the
   requested URI.

   The response SHOULD contain enough for information for the 
   user to resolve the conflict.
   [[ more about response body format ]]

Impacts

Atom Publishing Protocol status codes.

Notes

CategoryProposals