my $sftp = Net::SFTP::Foreign->new($::config{'ahost'},
    user => $::config{'auser'},
    password => $::config{'apass'},
    more => [
        'ConnectTimeout 30',
        'ServerAliveInterval 20',
        'ServerAliveCountMax 3'
    ]
);
if ($sftp->error) {
    $self->{error} = "Unable to open SFTP connection: " . $sftp->error;
    return;
}
$self->{sftp} = $sftp;