Lua

Check the Last Known IMAP Connection State

Demonstrates the Chilkat Imap.IsConnected method, which returns the last known connection state without sending any data to the IMAP server. A true result does not prove that an idle connection is still usable. This example connects and reads the state.

Background: IsConnected is a cheap, cached check — it reports what Chilkat last observed without touching the network. That makes it fast, but it can be stale: a server or firewall may have silently dropped an idle connection. When you need to be sure the connection is actually alive, send a lightweight round trip such as Noop, or use CheckConnection for a low-level socket probe.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the Imap.IsConnected method, which returns the last known connection state
-- without sending data to the IMAP server.  A true result does not prove that an idle
-- connection is still usable.

local imap = chilkat.Imap.new()

imap.ssl = true
imap.port = 993

local success = imap:connect("imap.example.com")
if not success then
    print(imap.last_error_text)
    return
end

-- Check the last known connection state (no data is sent to the server).
local connected = imap:is_connected()
if connected then
    print("The IMAP object believes it is connected.")
else
    print("The IMAP object is not connected.")
end

success = imap:disconnect()
if not success then
    print(imap.last_error_text)
    return
end