Web API 2 - ApiController.InternalServerError() returns HTTP 400 status code

Question

This Web API action returns an HTTP 500 (Internal Server Error) status code:

public IHttpActionResult Post()
{
    return InternalServerError();
}

But this action returns an HTTP 400 (Bad Request) status code:

public IHttpActionResult Post()
{
    return InternalServerError(new Exception());
}

I would expect both actions to return a 500 status code and the second action puts some of the error's details in the response body.

My first thought is that this is a bug but I wanted to get some other input. Is there any good reason why a 400 should be returned in the second action instead of a 500?

UPDATE:

The documentation on this method reads:

Creates an System.Web.Http.Results.ExceptionResult (500 Internal Server Error) with the specified exception.

I'm thinking more and more this is a bug.

There's no issue related to this one, you should open one at aspnetwebstack.codeplex.com/workitem/list/basic — Fals
– Fals, Commented Nov 20, 2013 at 18:23

Kiran · Accepted Answer · 2013-11-20 19:16:58Z

11

Right, this was a known issue which was fixed after Web API 2 release...you can use the following workaround to fix this issue..example:

return new ResponseMessageResult(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, invalidOpException));

Following was the issue that was logged before:
https://aspnetwebstack.codeplex.com/workitem/1318

answered Nov 20, 2013 at 19:16

Kiran

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