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PowerBuilder

Check for IMAP IDLE Mailbox Updates

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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.

Chilkat PowerBuilder Downloads

PowerBuilder
integer li_rc
integer li_Success
oleobject loo_Imap
integer li_TimeoutMs
string ls_Updates

li_Success = 0

//  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.

loo_Imap = create oleobject
li_rc = loo_Imap.ConnectToNewObject("Chilkat.Imap")
if li_rc < 0 then
    destroy loo_Imap
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Imap.Ssl = 1
loo_Imap.Port = 993

li_Success = loo_Imap.Connect("imap.example.com")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.Login("user@example.com","myPassword")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.SelectMailbox("Inbox")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.IdleStart()
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

//  Wait up to 30 seconds for mailbox updates.  IdleCheck returns a string, so assign it to a
//  string variable and check for success.
li_TimeoutMs = 30000
ls_Updates = loo_Imap.IdleCheck(li_TimeoutMs)
if loo_Imap.LastMethodSuccess = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

Write-Debug ls_Updates

li_Success = loo_Imap.IdleDone()
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.Disconnect()
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if



destroy loo_Imap