Node.js

Send a POP3 NOOP Command

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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Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var 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.

    var mailman = new chilkat.MailMan();

    //  Configure the POP3 server connection.
    mailman.MailHost = "pop.example.com";
    mailman.MailPort = 995;
    mailman.PopSsl = true;
    mailman.PopUsername = "user@example.com";
    mailman.PopPassword = "myPassword";

    //  Begin a POP3 session.

    success = mailman.Pop3BeginSession();
    if (success == false) {
        console.log(mailman.LastErrorText);
        return true;
    }

    //  Send a NOOP to keep the session alive.
    success = mailman.Pop3Noop();
    if (success == false) {
        console.log(mailman.LastErrorText);
        return true;
    }

    console.log("POP3 NOOP succeeded.");

}

chilkatExample();