What are CORS preflight requests?
CORS preflight requests are HTTP requests sent before the actual request to check permissions for cross-origin resource sharing.
Why do we need preflight requests?
They are necessary to ensure that the server allows the actual request, especially for methods like PUT or DELETE.
How does a preflight request work?
A preflight request uses the OPTIONS method to ask the server if the actual request is safe to send.
What headers are involved in a preflight request?
Common headers include 'Access-Control-Request-Method' and 'Access-Control-Request-Headers'.
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