#Spotinst Functions - CORS

Cross-Origin Resource Sharing is a mechanism that allows restricted resources on a web page to be requested from a domain outside of the original. CORS defines a way in which a web service and server can interact to determine whether or not it is safe to allow a cross-origin request. Enabling CORS for your function allows you to specify safe domains, and enables out-of-the-box support for preflight HTTP requests (via the OPTIONS method) that will return the needed ‘access-control-*’ headers specified below. The actual HTTP request will return the ‘access-control-allow-origin’ method. You can enable CORS for cross-domain HTTP requests with Spotinst Functions. Add the required fields to you serverless.yml file.

#Example CORS object:

cors:
  - enabled: true
  - origin: 'http://foo.example'
  - headers: 'Content-Type,X-PINGOTHER'
  - methods: 'PUT,POST'

#Parameters:

• enabled: Boolean

  • Specify if CORS is enabled for the function.
  • default: false

• origin: String

  • Specifies a domain/origin that may access the resource. A wildcard '*' may be used to allow any origin to access the resource.
  • default: '*'

• methods: String

  • Comma-separated list of HTTP methods that are allowed to access the resource. This is used in response to a preflight request.
  • default: 'DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT'

• headers: String

  • Comma-separated list of allowed headers.
  • default: 'Content-Type,Authorization'