sub new {
    my ($class, %args) = @_;
    return 'Error in syntax usage' unless _arg_validation(\%args);
    my $self = {
        ua       => _mk_ua(),
        login    => $args{login},
        password => $args{password},
        dir      => $args{dir},
        threads  => 30,
    };
    bless $self, $class;
    die 'ERROR WITH CONNECTION AUTH' unless $self->_connection_try();
    return $self;
}