SSH Tunnel Authenticate with a Password

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Demonstrates the Chilkat SshTunnel.AuthenticatePw method, which authenticates the SSH connection with a login name and password. The first argument is the login and the second is the password. Connect first, and call BeginAccepting afterward.

Background: Password authentication is the simplest option, but the password is a secret and should never be a hard-coded literal — obtain it from an interactive prompt, an environment variable, or a secrets vault. Public-key authentication is generally preferred for the unattended, long-running services that tunnels often are.

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    success := false

    //  Demonstrates the SshTunnel.AuthenticatePw method, which authenticates the SSH connection with
    //  a login name and password.  The 1st argument is the login and the 2nd is the password.

    tunnel := chilkat.NewSshTunnel()

    //  The tunnel forwards accepted local connections to this destination through the SSH server.
    tunnel.SetDestHostname("db.internal.example.com")
    tunnel.SetDestPort(5432)

    //  Connect to the SSH server.  This performs the TCP/proxy connection and SSH handshake, but
    //  does not authenticate yet.
    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
    }

    fmt.Println("Authenticated.")

    //  After authenticating, call BeginAccepting to start listening for local connections to forward.

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


    tunnel.DisposeSshTunnel()