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current-cors-origin
current-cors-methods
current-cors-headers
current-cors-max-age
current-cors-credentials-allowed?
wrap-cors
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3 CORS

 (require koyo/cors) package: koyo-lib

This module provides a wrapper function and parameters for handling CORS requests.

parameter

(current-cors-origin) → (or/c false/c non-empty-string?)

(current-cors-origin origin) → void?
  origin : (or/c false/c non-empty-string?)
 = #f

parameter

(current-cors-methods) → (listof non-empty-string?)

(current-cors-methods methods) → void?
  methods : (listof non-empty-string?)
 = '("HEAD" "DELETE" "GET" "PATCH" "POST" "PUT" "OPTIONS")

parameter

(current-cors-headers) → (listof non-empty-string?)

(current-cors-headers headers) → void?
  headers : (listof non-empty-string?)
 = '("*")

parameter

(current-cors-max-age) → exact-nonnegative-integer?

(current-cors-max-age max-age) → void?
  max-age : exact-nonnegative-integer?
 = 86400

parameter

(current-cors-credentials-allowed?) → boolean?

(current-cors-credentials-allowed? allowed?) → void?
  allowed? : boolean?
 = #t
These parameters determine the behavior of wrap-cors. Each one maps to one of the CORS response headers.

When current-cors-origin is #f, the origin is based upon current-application-url-scheme and current-application-url-host.

procedure

(wrap-cors handler) → (-> request? response?)

  handler : (-> request? response?)
Augments handler to add the various necessary bits of information to support CORS in its response. For OPTIONS requests, wrap-cors takes full control of the request.

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