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(Go) 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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    chilkatGlob := chilkat.NewGlobal()
    success := chilkatGlob.UnlockBundle("Anything for 30-day trial.")
    if success != true {
        fmt.Println(chilkatGlob.LastErrorText())
        chilkatGlob.DisposeGlobal()
        return
    }

    tunnel := chilkat.NewSshTunnel()

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

    // Connect to an SSH server and establish the SSH tunnel:
    success = tunnel.Connect(sshHostname,sshPort)
    if success != true {
        fmt.Println(tunnel.LastErrorText())
        chilkatGlob.DisposeGlobal()
        tunnel.DisposeSshTunnel()
        return
    }

    // 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 != true {
        fmt.Println(tunnel.LastErrorText())
        chilkatGlob.DisposeGlobal()
        tunnel.DisposeSshTunnel()
        return
    }

    // 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.SetDestPort(1433)
    tunnel.SetDestHostname("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 != true {
        fmt.Println(tunnel.LastErrorText())
        chilkatGlob.DisposeGlobal()
        tunnel.DisposeSshTunnel()
        return
    }

    // 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 := true
    success = tunnel.StopAccepting(waitForThreadExit)
    if success != true {
        fmt.Println(tunnel.LastErrorText())
        chilkatGlob.DisposeGlobal()
        tunnel.DisposeSshTunnel()
        return
    }

    // Close the SSH tunnel (would also kick any remaining connected clients).
    success = tunnel.CloseTunnel(waitForThreadExit)
    if success != true {
        fmt.Println(tunnel.LastErrorText())
        chilkatGlob.DisposeGlobal()
        tunnel.DisposeSshTunnel()
        return
    }


    chilkatGlob.DisposeGlobal()
    tunnel.DisposeSshTunnel()

 

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