Laravel/Lumen Auth JWT token not valid in subsequent requests, is it possibly expired? - php

Question

I have an app that uses Laravel/Lumen and its Auth guard JWT tokens for login.
I send a request to
http://myserver.com/authenticate
and I get a token in response.
Then when I use this token in subsequent requests
http://myserver.com/users
with the token in the header
Authorization : Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzUxMiJ9.eyJpc3MiOiJjbG96ZXJ0b29sc1YyIiwianRpIjoiNTBiMjE1MjllZGIxMmI4OGJlYTJmOTQxMTViNjc2NmYiLCJpYXQiOjE1MzY1NTU3NzEsIm5iZiI6MTUzNjU1NTc3NiwiZXhwIjoxNTM2NTcwOTc2LCJkYXRhIjp7ImVtYWlsIjoia3lsZWtvb3BtYW5AZ21haWwuY29tIiwiYXZhdGFyIjoiIiwiZmlyc3RfbmFtZSI6Ikt5bGUiLCJsYXN0X25hbWUiOiJLb29wbWFuIiwiaWQiOjMzNH0sInN1YiI6MzM0fQ.p20K56BW0c_J-xlk9gV6wDFafxgNuKUOmgk-4ExKhh9qPw79R0bpm-QbnVQFtYlatB_MjLYK1NdUt5GlGaOE9w
The request obviously usually comes back with a 200, (on my local server anyways)
However, on my production server all subsequent requests with the provided token come back with a 401 / Unauthorized
All the settings are the same on both servers.
I have this in my .env on both my production server, and local server.
JWT_KEY=yUyg2oo3M2N0Lf0CnsbG1ztsL1ovA70K
JWT_EXPIRE_AFTER=15200
JWT_ISSUER=mysite
JWT_ID_FIELD=id
JWT_NBF_DELAY=25
DB_TIMEZONE=+00:00
APP_TIMEZONE=UTC
My assumption is that it has something to do with expiry and/or server time.
Like I think that the token is coming back already expired, therefore on the subsequent request it is invalid.
Am I correct in thinking this is where the issue lies? And how do I go about fixing it/testing it?

Answer 1

You can visit https://jwt.io and paste your token into the encoded field to get back the expire date and check then in the developer console
const currentTime = Date.now() / 1000
if( exp < currentTime) {
// is expired
}
I have something like this in my code:
const checkExpiredJwtDate = token => {
const base64Url = token.split('.')[1];
const base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
const jwtObject = JSON.parse(window.atob(base64))
const currentTime = Date.now() / 1000;
if (jwtObject.exp < currentTime) {
// is expired...
}
};
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