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restful web services error codes Loving, Texas

Unless the request method was HEAD, the entity of the response SHOULD contain a short hypertext note with a hyperlink to the new URI(s). From RFC2616, 200 means "the request has succeeded." If the client's storage quota has been exceeded (for whatever reason), I'd return a 403 (Forbidden): The server understood the request, but is For each binding to a collection inside the request's scope, only one will be reported with a 200 status, while subsequent DAV:response elements for all other bindings will use the 208 Wikipedia A request was made of a resource using a request method not supported by that resource; for example, using GET on a form which requires data to be presented via

The client MAY repeat the request with a suitable Authorization header field (section 14.8). Wikipedia Standard response for successful HTTP requests. When you boil it down, there are really only 3 outcomes in the interaction between an app and an API: Everything worked The application did something wrong The API did something This presents many security issues; e.g., an attacking intermediary may be inserting cookies into the original domain's name space, may be observing cookies or HTTP authentication credentials sent from the user

Unexpected 1xx status responses MAY be ignored by a user agent. In particular, it is now easier to see the non-200 return case and the body of non-200 responses than it was in the past. Twilio Twilio does a great job aligning errors with HTTP status codes. This response is cacheable unless indicated otherwise.

The response SHOULD contain an entity describing why that version is not supported and what other protocols are supported by that server. But, but… Why? A user agent should not automatically redirect a request more than five times, since such redirections usually indicate an infinite loop. 300 Multiple Choices The requested resource corresponds to any one The 511 status SHOULD NOT be generated by origin servers; it is intended for use by intercepting proxies that are interposed as a means of controlling access to the network.

Here are some examples of how three different RESTful services provide error information back to the client. If known, the length of the delay MAY be indicated in a Retry-After header. If the 401 response contains the same challenge as the prior response, and the user agent has already attempted authentication at least once, then the user SHOULD be presented the entity See "vnd.error", application/vnd.error+json ( and "Problem Details for HTTP APIs", application/problem+json (

Response status codes beginning with the digit "5" indicate cases in which the server is aware that it has encountered an error or is otherwise incapable of performing the request. share|improve this answer edited Jan 16 '15 at 18:20 answered Jan 16 '15 at 18:13 Greg Burghardt 3,7081221 Thank you for an answer! Facebook In all cases, Facebook returns a 200 OK, regardless if there was an error or not. RestCase Get an invitation to RestCase private beta

Conclusion I believe that the best solution to handle errors in a REST API web services is the third option, in short:

Why don't miners get boiled to death? The server MAY close the connection to prevent the client from continuing the request. That's quite a huge issue as any developer who's played with returning different response codes will tell you; as soon as you start returning errors on 2xx, you have to turn an XML code/string pair?

What happens if the same field name is used in two separate inherited data templates? The Last Monday How to describe very tasty and probably unhealthy food Why is the bridge on smaller spacecraft at the front but not in bigger vessel? For example, if a command in a PROPPATCH method fails, then, at minimum, the rest of the commands will also fail with 424 (Failed Dependency). There are some cases where this status code is always returned, even if there was an error that occurred.

The actual response will depend on the request method used. A couple of best practices Use HTTP status codes Use HTTP status codes and try to map them cleanly to relevant standard-based codes. Not present in HTTP/1.0: available since HTTP/1.1 204 No Content The server has fulfilled the request but does not need to return an entity-body, and might want to return updated metainformation. If a Content-Length header field is present in the response, its value MUST match the actual number of OCTETs transmitted in the message-body.

But the problem I'm encountering is in code. As an example of its use, however, Apple's MobileMe service generates a 402 error ("httpStatusCode:402" in the Mac OS X Console log) if the MobileMe account is delinquent. 403 Forbidden The Some believe that returning status codes other than 200 is not good as the client did reach your REST API and got response. The actual response will depend on the request method used.

The XooMLe application currently uses this approach (XooMLe provides a RESTful API wrapper to the existing SOAP based Google API). I wouldn't return a 200 unless there really was nothing wrong with the request. It's not immediately clear. The response representations SHOULD include details explaining the condition, and MAY include a Retry-After header indicating how long to wait before making a new request.

Wikipedia Indicates multiple options for the resource that the client may follow. There must be no body on the response. 305 Use Proxy The requested resource MUST be accessed through the proxy given by the Location field. Therefore, HTTP/1.1 added status codes 303 and 307 to distinguish between the two behaviours. This documentation is archived and is not being maintained.

It, for instance, could be used to present different format options for video, list files with different extensions, or word sense disambiguation. 301 Moved Permanently The requested resource has been assigned Wikipedia The server failed to fulfill an apparently valid request. Bookmarking has similar issues. You can do what you want.

Or it would be better to create separate service for handling this? The action required may be carried out by the user agent without interaction with the user if and only if the method used in the second request is GET or HEAD. Careful reading of the HTTP specification shows that the 400 series codes should be used to communicate application errors; in many cases either 400 Bad Request or 403 Forbidden should be