Below is a utility method that takes advantage of the new Transporter Classes .checkConnection() function:

// Method: Util_IsNetActive // // Description: Uses SMTP Transporter Class's .checkConnection() function to check if internet connection is active // // Returns a Boolean: // - True : There is an active internet connection // - False : There is not an active internect connection #DECLARE()->$connected_b : Boolean $connected_b:=False var $hostPrimary_t : Text var $hostRedundancy_c : Collection var $options_o; $status_o : Object var $transporter : 4D.SMTPTransporter var $statusPrimary_b : Boolean // Assign a Primary SMTP Server to check against $hostPrimary_t:="smtp.gmail.com" // Assign any number of SMTP Servers to the collection as a Redundancy Check if the Primary Server is down $hostRedundancy_c:=["smtp.mail.yahoo.com"; "email-smtp.us-west-1.amazonaws.com"] $options_o:=New object("host"; $hostPrimary_t) $transporter:=SMTP New transporter($options_o) $status_o:=$transporter.checkConnection() If ($status_o.success=True)    $connected_b:=True Else       // Just in case the Primary SMTP server is down, perform a second check against one of the additional SMTP servers randomly    $options_o:=New object("host"; $hostRedundancy_c[Mod(Random; $hostRedundancy_c.length)])    $transporter:=SMTP New transporter($options_o)    $status_o:=$transporter.checkConnection()       $connected_b:=$status_o.success End if

The method can simply be called and will return a True an active internet connection is available or a False if not, assuming that there is nothing preventing an SMTP connection.

The other transporter classes can also be used:
4D.POP3Transporter
4D.IMAPTransporter
These both also have a .checkConnection() function.

The Primary and Redundancy hosts can be modified to another host of choice.