Classic ASP

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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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set tunnel = Server.CreateObject("Chilkat.SshTunnel")

'  Retain the listener activity log in memory so it can be read from the AcceptLog property.
tunnel.KeepAcceptLog = 1

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

tunnel.DestHostname = "db.internal.example.com"
tunnel.DestPort = 5432

sshPort = 22
success = tunnel.Connect("ssh.example.com",sshPort)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

'  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.
password = "mySshPassword"

success = tunnel.AuthenticatePw("mySshLogin",password)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

listenPort = 1080
success = tunnel.BeginAccepting(listenPort)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

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

'  Read the accumulated in-memory listener log.
Response.Write "<pre>" & Server.HTMLEncode( tunnel.AcceptLog) & "</pre>"

waitForThreadExit = 1
success = tunnel.CloseTunnel(waitForThreadExit)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If


%>
</body>
</html>