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Middleware CORS

We use @koa/cors to solve CORS, although it has reasonable default settings, but you can still use project config (default is vulcan.yaml) to change some settings to suit your own needs.

like so:

cors:
  enabled: true
  options:
    origin: 'http://google.com'
    allowMethods: 'GET,HEAD,PUT'

settings​

enabled

  • default: true
  • typt: boolean
  • Whether to enable the cors service, you can set it to false to stop the cors service.

options​

We support all options of @koa/cors, You can see all the options available to @koa/cors here.

origin

  • default: {request Origin header}
  • typt: string | Function(ctx) - origin Access-Control-Allow-Origin, default is request Origin header

allowMethods

  • default: 'GET,HEAD,PUT,POST,DELETE,PATCH'
  • typt: string - only GET, HEAD, PUT, POST, DELETE and PATCH are allowed in the string.

For more detailed settings and instructions, you can refer to here.