AWS / Cognito - difficulties with login

[jetlius]

Hello!

I am fairly new to using AWS, but I have been working on an app that uses Cognito for the authentication inside of Unity 2021.3.14, to be deployed in HoloLens 2.

I have managed to make it work in the editor, and it returns the Id token successfully, but when I build the project and launch it on the HoloLens, nothing happens, and I get no token in response.

I tried looking where AWS returns the error codes, so I can understand why it isn’t working, but as I said, I’m very new to the authentication features, and I couldn’t find it.

Anyone has had this problem or did something similar with the HoloLens, that could help?

Thank you in advance.

[Kurt-Dekker]

I would start with looking at the device logs (google for how to get them).

If there’s nothing obviously blowing up, then…

Networking, UnityWebRequest, WWW, Postman, curl, WebAPI, etc:

Using Unity for subscription lists

As with all network code, get it working with Postman or curl first. That makes it NOT a Unity problem. Solve the networking first. You must solve that or anything else is irrelevant. Once you have that working, then try and port it to UnityWebRequest. If it still doesn't work, one handy debug solution is to hook up a proxy like Charles and compare the functioning output from Postman / curl to the output from Unity, and from that reason about where your issues are.

Unity web request acting stupid.

Always get network stuff working outside of Unity in either curl or PostMan, then connect a proxy such as Charles and start trying to replicate the traffic shape with UnityWebRequest. Any other way risks wasting a lot of your time for trivial issues that only the above way will instantly reveal.

And setting up a proxy can be very helpful too, in order to compare traffic:

Using Charles Proxy with Unity

[jetlius]

I can log stuff on the HoloLens side, when the app is running, the problem is the only thing that I could find online that would be helpful is the IdToken, but that is the variable that I’m not getting, because the authentication isn’t happening. I tried looking for other things that would help me if they were logged, but I can’t seem to find anything that would show where my problem is.