我正在使用最新的草莓perl（This is perl 5, version 28, subversion 0 (v5.28.0) built for MSWin32-x86-multi-thread-64int）的新版本，并通过cpan（o conf init /proxy/）配置了代理。
如果我运行cpan，它也会识别出代理需要身份验证：
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
但是cpan不会等待Username:和Password:提示符下的输入-只是将鼠标悬停在整个文本上：
这里是完整的输出：for
D:\strawberryperl>cpan install XML::LibXML
Loading internal logger. Log::Log4perl recommended for better logging
CPAN::SQLite not installed, trying to work without
Fetching with HTTP::Tiny:
http://cpan.strawberryperl.com/authors/01mailrc.txt.gz
Error downloading with HTTP::Tiny: Not a CODE reference at D:\strawberryperl\perl\lib/CPAN/HTTP/Client.pm line 112.
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Warning: no success downloading 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'. Giving up on it.
Fetching with HTTP::Tiny:
http://www.cpan.org/authors/01mailrc.txt.gz
Error downloading with HTTP::Tiny: Not a CODE reference at D:\strawberryperl\perl\lib/CPAN/HTTP/Client.pm line 112.
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Warning: no success downloading 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'. Giving up on it.
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Warning: no success downloading 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'. Giving up on it.
As a last resort we now switch to the external ftp command 'C:\Windows\system32\ftp.exe'
to get 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'.
Doing so often leads to problems that are hard to diagnose.
If you're the victim of such problems, please consider unsetting the
ftp config variable with
o conf ftp ""
o conf commit
Fetching with HTTP::Tiny:
http://cpan.strawberryperl.com/authors/01mailrc.txt.gz
Error downloading with HTTP::Tiny: Not a CODE reference at D:\strawberryperl\perl\lib/CPAN/HTTP/Client.pm line 112.
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Warning: no success downloading 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'. Giving up on it.
Fetching with HTTP::Tiny:
http://www.cpan.org/authors/01mailrc.txt.gz
Error downloading with HTTP::Tiny: Not a CODE reference at D:\strawberryperl\perl\lib/CPAN/HTTP/Client.pm line 112.
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Warning: no success downloading 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'. Giving up on it.
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Proxy authentication needed!
(Note: to permanently configure username and password run
o conf proxy_user your_username
o conf proxy_pass your_password
)
Username:
Warning: Term::ReadKey seems not to be available, your password will be echoed to the terminal!
Password:
Warning: no success downloading 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'. Giving up on it.
As a last resort we now switch to the external ftp command 'C:\Windows\system32\ftp.exe'
to get 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp14296'.
Doing so often leads to problems that are hard to diagnose.
If you're the victim of such problems, please consider unsetting the
ftp config variable with
o conf ftp ""
o conf commit
Please check, if the URLs I found in your configuration file
(http://cpan.strawberryperl.com/, http://www.cpan.org/) are valid. The
urllist can be edited. E.g. with 'o conf urllist push ftp://myurl/'
Could not fetch authors/01mailrc.txt.gz