Regulate Header Permit For Free

Cross-Origin Resource Sharing (CORS) allowlist is a list of external domains that you allow to call on your Salesforce resources. By setting these up in this list you are allowing these domains to access important information from your Salesforce.

The Allow header is a list of HTTP methods (GET, PUT, and POST, for example) allowed by the HTTP server.

Double-click the header or footer you want to edit, or select Header or Footer, and then select Edit Header or Edit Footer. Add or change text for the header or footer or do any of the following: To remove the first page header or footer Select Different First Page.

CORS (Cross-Origin Resource Sharing) is a mechanism that uses the HTTP header "Access-Control-Allow-Origin" to allow or deny end-user browsers from accessing a domain other than the one from which the browser sent the request.

Limiting the possible Access-Control-Allow-Origin values to a set of allowed origins requires code on the server side to check the value of the Origin request header, compare that to a list of allowed origins, and then if the Origin value is in the list, set the Access-Control-Allow-Origin value to the same value as ...

The Access-Control-Allow-Headers response header is used in response to a preflight request which includes the Access-Control-Request-Headers to indicate which HTTP headers can be used during the actual request. This header is required if the request has an Access-Control-Request-Headers header.

For Chrome and Firefox Click New Rule and select Modify Headers rule. Enter the Request URL for which you want to modify the HTTP request headers. You can also leave this empty; it will apply the modification to all the URLs in your browser. Add Request or Response headers you want to modify.