SSH Tunnel Per-Client Logging and Client Identifier

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Demonstrates the ClientLogDir and ClientIdentifier properties. When ClientLogDir is set, a separate log file is created for each tunnel client; ClientIdentifier is the SSH client-identification string sent during the handshake.

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

Background: When many clients share one tunnel, a single combined log is hard to follow, so ClientLogDir gives each connection its own file — the fastest way to diagnose one misbehaving client. ClientIdentifier sets the version string the server sees; overriding the default is occasionally needed for compatibility with servers that key behavior off the client identification, or simply to label your application in server logs.

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    success := false

    //  Demonstrates the SshTunnel per-client logging properties ClientLogDir and ClientIdentifier.

    tunnel := chilkat.NewSshTunnel()

    //  When ClientLogDir is set, a separate log file is created for each tunnel client in this
    //  directory, which is useful for troubleshooting individual connections.
    tunnel.SetClientLogDir("qa_output/client_logs")

    //  The SSH client-identification string sent to the SSH server during the handshake.
    tunnel.SetClientIdentifier("SSH-2.0-MyTunnelApp_1.0")

    tunnel.SetDestHostname("db.internal.example.com")
    tunnel.SetDestPort(5432)

    sshPort := 22
    success = tunnel.Connect("ssh.example.com",sshPort)
    if success == false {
        fmt.Println(tunnel.LastErrorText())
        tunnel.DisposeSshTunnel()
        return
    }

    //  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 == false {
        fmt.Println(tunnel.LastErrorText())
        tunnel.DisposeSshTunnel()
        return
    }

    listenPort := 1080
    success = tunnel.BeginAccepting(listenPort)
    if success == false {
        fmt.Println(tunnel.LastErrorText())
        tunnel.DisposeSshTunnel()
        return
    }

    fmt.Println("Tunnel running; each client is logged in ", tunnel.ClientLogDir())

    waitForThreadExit := true
    success = tunnel.CloseTunnel(waitForThreadExit)
    if success == false {
        fmt.Println(tunnel.LastErrorText())
        tunnel.DisposeSshTunnel()
        return
    }


    tunnel.DisposeSshTunnel()