Visual Basic 6.0

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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Visual Basic 6.0

Dim success As Long
success = 0

'  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 ChilkatImap

imap.Ssl = 1
imap.Port = 993

success = imap.Connect("imap.example.com")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

'  Check the last known connection state (no data is sent to the server).
Dim connected As Long
connected = imap.IsConnected()
If (connected = 1) Then
    Debug.Print "The IMAP object believes it is connected."
Else
    Debug.Print "The IMAP object is not connected."
End If

success = imap.Disconnect()
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If