let parameters: Parameters = ["username ": "Henry","password":"xxxx","key"="ewq2356"]

let headers = [ "Authorization": "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==", "Content-Type": "application/x-www-form-urlencoded" ]

let user = "user1" let password = "password1"

http://myapi.com/rest/index.php