HTTP/1.1
Fleeting- Référence externe : https://datatracker.ietf.org/doc/html/rfc2617#section-1
If the user agent wishes to send the userid “Aladdin” and password “open sesame”, it would use the following header field:
Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
client MAY preemptively send the corresponding Authorization header with requests for resources