Ruby

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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Ruby

require 'chilkat'

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::CkMailMan.new()

#  Configure the POP3 server connection.
mailman.put_MailHost("pop.example.com")
mailman.put_MailPort(995)
mailman.put_PopSsl(true)
mailman.put_PopUsername("user@example.com")
mailman.put_PopPassword("myPassword")

#  Begin a POP3 session.

success = mailman.Pop3BeginSession()
if (success == false)
    print mailman.lastErrorText() + "\n";
    exit
end

#  Send a NOOP to keep the session alive.
success = mailman.Pop3Noop()
if (success == false)
    print mailman.lastErrorText() + "\n";
    exit
end

print "POP3 NOOP succeeded." + "\n";