How to specify HTTP error code?

Question

How to specify HTTP error code?

I have tried

app.get('/', function(req, res, next) {
    var e = new Error('error message');
    e.status = 400;
    next(e);
});

and

app.get('/', function(req, res, next) {
    res.statusCode = 400;
    var e = new Error('error message');
    next(e);
});

but always an error code of 500 is announced.

node.js
express

Answer 1

Per the Express (Version 4+) docs, you can use:

res.status(400);
res.send('None shall pass');

http://expressjs.com/4x/api.html#res.status

<=3.8

res.statusCode = 401;
res.send('None shall pass');

Answer 2

You can use res.send('OMG :(', 404); just res.send(404);

Answer 3

The version of the errorHandler middleware bundled with some (perhaps older?) versions of express seems to have the status code hardcoded. The version documented here: http://www.senchalabs.org/connect/errorHandler.html on the other hand lets you do what you are trying to do. So, perhaps trying upgrading to the latest version of express/connect.

Answer 4

Old question, but still coming up on Google. In the current version of Express (3.4.0), you can alter res.statusCode before calling next(err):

res.statusCode = 404;
next(new Error('File not found'));

Answer 5

A simple one liner;

res.status(404).send("Oh uh, something went wrong");

Answer 6

From what I saw in Express 4.0 this works for me. This is example of authentication required middleware.

function apiDemandLoggedIn(req, res, next) {

    // if user is authenticated in the session, carry on
    console.log('isAuth', req.isAuthenticated(), req.user);
    if (req.isAuthenticated())
        return next();

    // If not return 401 response which means unauthroized.
    var err = new Error();
    err.status = 401;
    next(err);
}