Troubleshooting Problems with Node JS Express, Passport JS, and Authentication on Android Devices

  1. I am currently setting up a login system using Node JS Express and Passport, incorporating Passport's local strategy: .
  2. The database in use is MongoDB.
  3. An issue I'm facing is the inconsistency of successful logins (especially with 'User A') on Android devices such as phones and tablets. The error received is a 401 (unauthorized error).
  4. However, logging in with 'User A' proves to be consistent from a desktop computer and iOS devices like iPhones and iPads.

Any suggestions or insights on what might be causing this issue?

Below shows the authentication code being executed:

app_api/config/passport.js

var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var mongoose = require('mongoose');
var User = mongoose.model('User');

// Rest of the code remains the same

app_api/controllers/authentication.js

var passport = require('passport');
var mongoose = require('mongoose');
var User = mongoose.model('User');

// Rest of the code remains the same

Further below is the controller app_server/controllers/index.js showing the function logincontinue, which invokes the function login found in app_api/controllers/authentication.js:

app_server/controllers/index.js

var request = require('request');

// Rest of the code remains the same

Answer №1

  1. Great news, the problem has been fixed!
  2. The issue stemmed from case sensitivity in the username field.
  3. By changing req.body.username to req.body.username.toLowerCase() within the app_server/controllers/index.js file and the logincontinue function, the issue was successfully resolved.

Many thanks.

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