What should a JSON service return on failure / error

Question

I\'m writing a JSON service in C# (.ashx file). On a successful request to the service I return some JSON data. If the request fails, either because an exception was thrown

Answer 1

I think if you just bubble an exception, it should be handled in the jQuery callback that is passed in for the 'error' option. (We also log this exception on the server side to a central log). No special HTTP error code required, but I'm curious to see what other folks do, too.

This is what I do, but that's just my $.02

If you are going to be RESTful and return error codes, try to stick to the standard codes set forth by the W3C: http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html