Is it possible to redirect using a POST method ?
Or should redirects always be made using GET ?
The use for this is in the final steps of an order process for an e-commerce site, to send the data to the payment processor, without introducing an extra step for the user.
Redirection isn’t possible with POST requests – it’s part of the HTTP/1.1 protocol.
You could either introduce another step that contains the form data to be POSTed to the payment processor, or you could send the post from your application (something I have done when working with PROTX).