Xojo Plugin

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.

Chilkat Xojo Plugin Downloads

Download Chilkat for Xojo Plugin

Xojo Plugin

Dim success As Boolean
success = False

//  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.

Dim imap As New Chilkat.Imap

imap.Ssl = True
imap.Port = 993

success = imap.Connect("imap.example.com")
If (success = False) Then
    System.DebugLog(imap.LastErrorText)
    Return
End If

//  Check the last known connection state (no data is sent to the server).
Dim connected As Boolean
connected = imap.IsConnected()
If (connected = True) Then
    System.DebugLog("The IMAP object believes it is connected.")
Else
    System.DebugLog("The IMAP object is not connected.")
End If

success = imap.Disconnect()
If (success = False) Then
    System.DebugLog(imap.LastErrorText)
    Return
End If