Telnet question using groovy in HE

jpoeppelman1 · September 8, 2020, 11:34pm

Hello, does anyone know of a way to check if a telnet connection is still active when issuing a hub command as such? I'm aware of telnetStatus() receiving the status, but this method is invoked after the fact... I would like to catch if the following command fails synchronously. Anyone?

return new hubitat.device.HubAction("${msg}\n", hubitat.device.Protocol.TELNET )

dman2306 · September 9, 2020, 3:18am

I don’t believe you can because the command itself is sent asynchronously. Basically it’s in a queue and it won’t fail until that queue executes. So it doesn’t fail synchronously.

jpoeppelman1 · September 9, 2020, 10:16am

Okay, thanks. Is there a way to check if the queue is actively connected at a minimum?

kahn-hubitat · September 9, 2020, 5:36pm

Send something and check.for a replu. I used telnet to make an email send notification device with no log in. Ie basic Unix send mail.

github.com

lgkahn/hubitat/blob/master/sendmail

/**
*   simple sendmail no authentication .. lg kahn
*  You should have received a copy of the GNU General Public License
*  along with this program.  If not, see <https://www.gnu.org/licenses/>.
*
*
*/


attribute "lastCommand", "string"

preferences {
	input("EmailServer", "text", title: "Email Server:", description: "Enter location of email server", required: true)
	input("EmailPort", "integer", title: "Port #:", description: "Enter port number, default 25", defaultValue: 25)
	input("From", "text", title: "From:", description: "", required: true)
	input("To", "text", title: "To:", description: "", required: true)
	input("Subject", "text", title: "Subject:", description: "")
    input("debug", "bool", title: "Enable logging", required: true, defaultValue: false)
}

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