Zeit (Vercel) Now serverless authenticated requests failing because of CORS

Question

I\'m not able to correctly handle CORS issues when doing either PATCH/POST/PUT requests from the browser sending an Authorization

Answer 1

I faced a similar problem and the problem was solved byadding the header to the routes as follows:

"routes": [
    {
      "src": ".*",
      "methods": ["GET", "POST", "OPTIONS"],
      "headers": {
        "Access-Control-Allow-Origin": "*",
        "Access-Control-Allow-Headers": "Origin, X-Requested-With, Content-Type, Accept",
        "Access-Control-Allow-Credentials": "true"
      },
      "dest": "index.js",
      "continue": true
    },
    {
      "src": "/user/login", "methods": ["POST"], "dest": "index.js"
    }
  ]

remember to add continue: true.

https://github.com/super-h-alt/zeit-now-cors-problems/blob/master/now.json