How to specify HTTP error code?

Question

I have tried:

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

and:

Answer 1

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

Answer 2

express deprecated res.send(body, status). Use res.status(status).send(body) instead

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

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);
}

Answer 5

I tried

res.status(400);
res.send('message');

..but it was giving me error:

(node:208) UnhandledPromiseRejectionWarning: Error: Can't set headers after they are sent.

This work for me

res.status(400).send(yourMessage);