How do I know if I provided an incorrect password?

[naugtur]

new Redis(options) with options.password being incorrect or missing, doesn't throw (not surprising, AUTH is async) and it doesn't emit end nor close, nor error.

How do I know if the AUTH command that happens in the background failed?

[edit]
It works if I call .auth myself, but otherwise, the error is swallowed. I even found one location which might be responsible for swallowing it: https://github.com/luin/ioredis/blob/master/lib/redis.js#L124

But switching to lazyConnect and connecting on my own would also resolve happily without reporting auth issues, so that's not all there is to it.

[one more edit]
Unfortunately, calling .auth on my own is not possible, because a "Ready check" is made, and it fails because auth was not made yet... So no workaround here.

[luin]

Yes, we may emit an event when the password is wrong. May be auth error.

[naugtur]

So for the workaround to work:

enableReadyCheck: false in options is required, then:

redisInstance.on("connect", function () {
    redisInstance.auth("pawsword", function (err, res) {
        if (err) {
            console.error(err);
            redisInstance.disconnect()
            process.exit();

        }

    })
});

But I'd appreciate a way to catch the initial built-in auth failure.

redisInstance.on("error",function(authError){})

^would be the way to go imho

[luin]

error event is a special event that would crash the app if there's no listener for it. I would go for another event name like auth error. 😆

[naugtur]

Well, I'm on this camp that prefers when errors have to be handled ;) but ok.
If I can suggest something I'd not put a space in the event name for the sake of people coming from jQuery where it means 2 events ;)