func (o Options) NewClient() (*Client, error) {
	host := o.Host
	c, err := connect(host, o.User, o.Password)
	if err != nil {
		return nil, err
	}

	if strings.LastIndex(o.Host, ":") > 0 {
		host = host[:strings.LastIndex(o.Host, ":")]
	}

	client := new(Client)
	if o.NoTLS {
		client.conn = c
	} else {
		var tlsconn *tls.Conn
		if o.TLSConfig != nil {
			tlsconn = tls.Client(c, o.TLSConfig)
		} else {
			DefaultConfig.ServerName = host
			newconfig := DefaultConfig
			newconfig.ServerName = host
			tlsconn = tls.Client(c, &newconfig)
		}
		if err = tlsconn.Handshake(); err != nil {
			return nil, err
		}
		insecureSkipVerify := DefaultConfig.InsecureSkipVerify
		if o.TLSConfig != nil {
			insecureSkipVerify = o.TLSConfig.InsecureSkipVerify
		}
		if !insecureSkipVerify {
			if err = tlsconn.VerifyHostname(host); err != nil {
				return nil, err
			}
		}
		client.conn = tlsconn
	}

	if err := client.init(&o); err != nil {
		client.Close()
		return nil, err
	}

	return client, nil
}
func (o Options) NewClient() (*Client, error) {
	host := o.Host
	c, err := connect(host, o.User, o.Password)
	if err != nil {
		return nil, err
	}

	if strings.LastIndex(o.Host, ":") > 0 {
		host = host[:strings.LastIndex(o.Host, ":")]
	}

	client := new(Client)
	if o.NoTLS {
		client.conn = c
	} else {
		var tlsconn *tls.Conn
		if o.TLSConfig != nil {
			tlsconn = tls.Client(c, o.TLSConfig)
		} else {
			DefaultConfig.ServerName = host
			newconfig := DefaultConfig
			newconfig.ServerName = host
			tlsconn = tls.Client(c, &newconfig)
		}
		if err = tlsconn.Handshake(); err != nil {
			return nil, err
		}
		insecureSkipVerify := DefaultConfig.InsecureSkipVerify
		if o.TLSConfig != nil {
			insecureSkipVerify = o.TLSConfig.InsecureSkipVerify
		}
		if !insecureSkipVerify {
			if err = tlsconn.VerifyHostname(host); err != nil {
				return nil, err
			}
		}
		client.conn = tlsconn
	}

	if err := client.init(&o); err != nil {
		client.Close()
		return nil, err
	}

	return client, nil
}
// NewClient establishes a new Client connection based on a set of Options.