from sshtunnel import SSHTunnelForwarder

# ---- KONFIG ----
SSH_HOST = "192.168.1.146"   # Raspberry Pi im 192.168.1.x Netz
SSH_PORT = 22
SSH_USER = "pi"
PASSWORD = 'raspberry'          # oder Passwort als String


REMOTE_IP = "10.0.0.10"      # Wärmepumpe im 10.0.0.x Netz
REMOTE_PORT = 502            # Modbus/TCP Port

def make_tunnel(port):
    tunnel = SSHTunnelForwarder(
        (SSH_HOST, SSH_PORT),
        ssh_username=SSH_USER,
        ssh_password=PASSWORD,
        remote_bind_address=(REMOTE_IP, REMOTE_PORT),
        local_bind_address=("127.0.0.1", port),
    )
    tunnel.start()
    return tunnel