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SSH Tunnel Listener Activity Log

Demonstrates the listener-log properties KeepAcceptLog, AcceptLog, and AcceptLogPath, which record the activity of the background listener thread started by BeginAccepting.

Note: The log paths are relative to the application's current working directory. Absolute paths may also be used.

Background: Because the listener runs on a background thread, an activity log is often the only practical way to see what it is doing — which connections it accepted and when. KeepAcceptLog must be enabled for the in-memory AcceptLog to be populated; AcceptLogPath is an independent file-based log that persists across the run. This log covers the listener specifically, as distinct from the TunnelLog that records the SSH tunnel threads.

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Local $bSuccess = False

;  Demonstrates the SshTunnel listener-log properties KeepAcceptLog, AcceptLog, and AcceptLogPath.
;  
;  These log the activity of the background listener thread started by BeginAccepting.

$oTunnel = ObjCreate("Chilkat.SshTunnel")

;  Retain the listener activity log in memory so it can be read from the AcceptLog property.
$oTunnel.KeepAcceptLog = True

;  Optionally also write the listener activity to a file (separate from the in-memory log).
$oTunnel.AcceptLogPath = "qa_output/accept.log"

$oTunnel.DestHostname = "db.internal.example.com"
$oTunnel.DestPort = 5432

Local $iSshPort = 22
$bSuccess = $oTunnel.Connect("ssh.example.com",$iSshPort)
If ($bSuccess = False) Then
    ConsoleWrite($oTunnel.LastErrorText & @CRLF)
    Exit
EndIf

;  Normally you would not hard-code the password in source.  You should instead obtain it
;  from an interactive prompt, environment variable, or a secrets vault.
Local $sPassword = "mySshPassword"

$bSuccess = $oTunnel.AuthenticatePw("mySshLogin",$sPassword)
If ($bSuccess = False) Then
    ConsoleWrite($oTunnel.LastErrorText & @CRLF)
    Exit
EndIf

Local $iListenPort = 1080
$bSuccess = $oTunnel.BeginAccepting($iListenPort)
If ($bSuccess = False) Then
    ConsoleWrite($oTunnel.LastErrorText & @CRLF)
    Exit
EndIf

;  ... the listener accepts connections for a while ...

;  Read the accumulated in-memory listener log.
ConsoleWrite($oTunnel.AcceptLog & @CRLF)

Local $bWaitForThreadExit = True
$bSuccess = $oTunnel.CloseTunnel($bWaitForThreadExit)
If ($bSuccess = False) Then
    ConsoleWrite($oTunnel.LastErrorText & @CRLF)
    Exit
EndIf