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Check for IMAP IDLE Mailbox Updates

Demonstrates the Chilkat Imap.IdleCheck method, which waits for mailbox updates after IdleStart has entered IDLE mode. The only argument is a timeout in milliseconds; 0 performs a non-blocking poll of notifications already received. This example waits up to 30 seconds.

Background: IdleCheck consumes the notifications already waiting on the connection rather than sending a new polling command. A typical monitoring loop repeatedly calls IdleCheck with a timeout and reacts when updates arrive. Because servers usually drop an idle connection after about 29 minutes, long-lived monitors periodically call IdleDone and then IdleStart again to refresh it.

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Local $bSuccess = False

;  Demonstrates the Imap.IdleCheck method, which waits for IMAP IDLE mailbox updates and returns
;  them.  The only argument is a timeout in milliseconds.  Use 0 for a non-blocking poll.

$oImap = ObjCreate("Chilkat.Imap")

$oImap.Ssl = True
$oImap.Port = 993

$bSuccess = $oImap.Connect("imap.example.com")
If ($bSuccess = False) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oImap.Login("user@example.com","myPassword")
If ($bSuccess = False) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oImap.SelectMailbox("Inbox")
If ($bSuccess = False) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

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

;  Wait up to 30 seconds for mailbox updates.  IdleCheck returns a string, so assign it to a
;  string variable and check for success.
Local $iTimeoutMs = 30000
Local $sUpdates = $oImap.IdleCheck($iTimeoutMs)
If ($oImap.LastMethodSuccess = False) Then
    ConsoleWrite($oImap.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($sUpdates & @CRLF)

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

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