AutoIt

Send an SMTP NOOP Command

Demonstrates the Chilkat MailMan.SmtpNoop method, which sends an SMTP NOOP command to the server. NOOP does nothing except elicit a positive response, which is useful for keeping a connection alive or verifying it is still responsive. This example opens an SMTP connection, sends a NOOP, and closes.

Background: When holding an SMTP connection open across many sends (see OpenSmtpConnection), an idle stretch can cause the server to time out and drop the socket. A periodic NOOP keeps the session active and confirms the server is still responding, so the next SendEmail doesn't fail on a silently-closed connection.

Chilkat AutoIt Downloads

Download Chilkat for AutoIt

AutoIt

Local $bSuccess = False

;  Demonstrates the MailMan.SmtpNoop method, which sends an SMTP NOOP command to the server.
;  NOOP does nothing except elicit a positive response, useful for keeping a connection
;  alive or verifying it is still responsive.

$oMailman = ObjCreate("Chilkat.MailMan")

;  Configure the SMTP server connection.
$oMailman.SmtpHost = "smtp.example.com"
$oMailman.SmtpPort = 465
$oMailman.SmtpSsl = True
$oMailman.SmtpUsername = "user@example.com"
$oMailman.SmtpPassword = "myPassword"

;  Open the SMTP connection.

$bSuccess = $oMailman.OpenSmtpConnection()
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

;  Send a NOOP to keep the connection alive.
$bSuccess = $oMailman.SmtpNoop()
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oMailman.CloseSmtpConnection()
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("SMTP NOOP succeeded." & @CRLF)