Classic ASP

SSH Tunnel for Database Connection (such as ADO, ODBC, JDBC, etc.)

Demonstrates how to create an SSH tunneling client in a background thread of your application. This makes it possible to SSH tunnel database connections without the need for separate software (such as PuTTY) to be running.

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Classic ASP

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

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

success = 0

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

sshHostname = "sftp.example.com"
sshPort = 22

' Connect to an SSH server and establish the SSH tunnel:
success = tunnel.Connect(sshHostname,sshPort)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

' Authenticate with the SSH server via a login/password
' or with a public key.  
' This example demonstrates SSH password authentication.
success = tunnel.AuthenticatePw("mySshLogin","mySshPassword")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

' The destination host/port is the database server.
' The DestHostname may be the domain name or 
' IP address (in dotted decimal notation) of the database
' server.
tunnel.DestPort = 1433
tunnel.DestHostname = "myDbServer.com"

' Start accepting connections in a background thread.
' The SSH tunnels are autonomously run in a background
' thread.  There is one background thread for accepting
' connections, and another for managing the tunnel pool.
listenPort = 3316
success = tunnel.BeginAccepting(listenPort)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

' At this point the app may connect to the database server through
' the SSH tunnel.  The database connection string would
' use "localhost" for the hostname and 3316 for the port.
' We're not going to show the database coding here,
' because it can vary depending on the API you're using
' (ADO, ODBC, OLE DB, etc. )

' This is where the application's database code would go...

' Stop the background listen/accept thread:
waitForThreadExit = 1
success = tunnel.StopAccepting(waitForThreadExit)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If

' Close the SSH tunnel (would also kick any remaining connected clients).
success = tunnel.CloseTunnel(waitForThreadExit)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( tunnel.LastErrorText) & "</pre>"
    Response.End
End If


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