Send a POP3 NOOP Command

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Demonstrates the Chilkat MailMan.Pop3Noop method, which sends a POP3 NOOP command to the server. NOOP does nothing except elicit a positive response, which is useful for keeping a session alive or verifying the connection is still responsive. This example begins a POP3 session and sends a NOOP.

Background: NOOP ("no operation") is a standard keep-alive across many internet protocols. Servers often drop idle connections after a timeout; sending a periodic NOOP resets that timer so a long-running session stays open. It also serves as a cheap "are you still there?" probe — a successful reply confirms the socket and the authenticated session are still healthy.

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    success := false

    //  Demonstrates the MailMan.Pop3Noop method, which sends a POP3 NOOP command to the server.
    //  NOOP does nothing except elicit a positive response, which is useful for keeping a
    //  session alive or verifying the connection is still responsive.

    mailman := chilkat.NewMailMan()

    //  Configure the POP3 server connection.
    mailman.SetMailHost("pop.example.com")
    mailman.SetMailPort(995)
    mailman.SetPopSsl(true)
    mailman.SetPopUsername("user@example.com")
    mailman.SetPopPassword("myPassword")

    //  Begin a POP3 session.

    success = mailman.Pop3BeginSession()
    if success == false {
        fmt.Println(mailman.LastErrorText())
        mailman.DisposeMailMan()
        return
    }

    //  Send a NOOP to keep the session alive.
    success = mailman.Pop3Noop()
    if success == false {
        fmt.Println(mailman.LastErrorText())
        mailman.DisposeMailMan()
        return
    }

    fmt.Println("POP3 NOOP succeeded.")

    mailman.DisposeMailMan()