Express doesn't set a cookie

Question

I have problem with setting a cookies via express. I\'m using Este.js dev stack and I try to set a cookie in API auth /login route. Here is the cod

Answer 1

A cookie can't be set if the client and server are on different domains. Different sub-domains is doable but not different domains and not different ports.

If using Angular as your frontend you can simply send all requests to the same domain as your Angular app (so the app is sending all API requests to itself) and stick an /api/ in every HTTP API request URL - usually configured in your environment.ts file:

export const environment = {
  production: false,
  httpPhp: 'http://localhost:4200/api'
}

Then all HTTP requests will use environment.httpPhp + '/rest/of/path'

Then you can proxy those requests by creating proxy.conf.json as follows:

{
  "/api/*": {
    "target": "http://localhost:5200",
    "secure": false,
    "changeOrigin": true,
    "pathRewrite": {
      "^/api": ""
    }
  }
}

Then add this to ng serve:

ng serve -o --proxy-config proxy.conf.json

Then restart your app and it should all work, assuming that your server is actually using Set-Cookie in the HTTP response headers. (Note, on a diff domain you won't even see the Set-Cookie response header, even if the server is configured correctly).