无法连接SFTP服务器perl

Question

无法连接SFTP服务器，我也没有收到错误。 但脚本只是闪烁..等待服务器的一些响应..

Authentication methods that can continue: password,publickey. 
Next method to try is password.                               
Trying password authentication.                               
Login completed, opening dummy shell channel.                 
channel 0: new [client-session]                               
Requesting channel_open for channel 0.                        
channel 0: open confirm rwindow 16384 rmax 16384              
Got channel open confirmation, requesting shell.              
Requesting service shell on channel 0.                        
channel 1: new [client-session]                               
Requesting channel_open for channel 1.                        
Entering interactive session.                                 
Sending command: ls                                           
Sending command: ls                                           
Requesting service exec on channel 1.                         
channel 1: open confirm rwindow 16384 rmax 16384     

use Net::SSH::W32Perl;
$ENV{HOME} = "C:\\user\\demo";
my $host = "xxx.xxx.xxxxx.xx";
my $ssh = Net::SSH::W32Perl->new($host, debug=>1);
$ssh->login('abcxxx', 'xxxxxxx');  # 30 seconds to login...why?!?!
my ($out, $err, $exit) = $ssh->cmd("ls");
print $out;