--proxy-file with authentication

[hastalamuerte]

Hello, can you plz tell what format is accepted (if it is) by sqlmap for proxy file with creds inside , like -

http://admin:password1@95.164.108.22:555
http://user:password3@38.152.246.22:443
http://root:pswrd@38.152.246.21:43
http://info:p@ssword@190.111.162.22:43

if i use exactly that format of file i receive an
[DEBUG] got HTTP error code: 407 ('Proxy Authentication Required')

and what about @ symbol inside password , can it maybe escaped/incapsulated somehow?