The default method is GET. If the form uses GET, the form data is encoded in the URI as a query string. If the form uses POST, the form data is placed in the request body. For POSTed data, the enctype ...

If you want to upload file with multiple form-data having different content-type you need to use Content-Type: multipart/form-data. curl -X POST 'http:\\host:post\api'\ -H 'Content-Type: ...

Submission of the same data more than once in a POST request is undesirable and got its own name: Double Submit problem. Take the standard use case with HTML FORM submitted to the server. Form data is ...