HTTP 303 See Other tells the client to retrieve the resource at a different URI using GET, regardless of the original request method. This is commonly used after a POST submission to redirect the client to a result page, implementing the Post/Redirect/Get pattern.
After processing a form POST, the server redirects to a GET page to prevent duplicate submissions on browser refresh.
The client should make a GET request to the URI in the Location header, regardless of the original method.
Verify the Location header points to the correct result page.
curl -v -X POST -d 'data=value' https://example.com/form