rules: optional array of object {allowed, id, exposeHeaders, maxAgeSeconds}
allowed: object {methods, origins, headers}
Object specifying allowed origins, methods and headers for this CORS rule.
methods: array of "GET" or "PUT" or "POST" or 2 more
Specifies the value for the Access-Control-Allow-Methods header R2 sets when requesting objects in a bucket from a browser.
One of the following:
"GET"
"PUT"
"POST"
"DELETE"
"HEAD"
origins: array of string
Specifies the value for the Access-Control-Allow-Origin header R2 sets when requesting objects in a bucket from a browser.
headers: optional array of string
Specifies the value for the Access-Control-Allow-Headers header R2 sets when requesting objects in this bucket from a browser. Cross-origin requests that include custom headers (e.g. x-user-id) should specify these headers as AllowedHeaders.
id: optional string
Identifier for this rule.
exposeHeaders: optional array of string
Specifies the headers that can be exposed back, and accessed by, the JavaScript making the cross-origin request. If you need to access headers beyond the safelisted response headers, such as Content-Encoding or cf-cache-status, you must specify it here.
maxAgeSeconds: optional number
Specifies the amount of time (in seconds) browsers are allowed to cache CORS preflight responses. Browsers may limit this to 2 hours or less, even if the maximum value (86400) is specified.
