Hi,

$ curl -v -u luser:pokus ftp://localhost/file
does
> USER luser
> PASS pokus
and works fine.

$ curl -v -x localhost:3128 -u luser:pokus ftp://localhost/file
does
> GET ftp://localhost/file HTTP/1.1
> Authorization: Basic bHVzZXI6cG9rdXM=

and fails at least with squid, because the proxy ignores Authorization:
for ftp.

$ curl -v -x localhost:3128 ftp://luser:pokus@localhost/file
does
> GET ftp://luser:pokus@localhost/file HTTP/1.1

and works fine.

Maybe this is a squid bug, but I didn't find anything relevant in the
RFCs. The question is: does it make sense for libcurl to insert the
username:password into the url when doing ftp via a proxy? Attached is
an incomplete patch doing this.

Michal