tcpclient.py

import socket

# Peudo code

def notify(tcpHost, tcpPort, device, logger):
    # Create a socket (SOCK_STREAM means a TCP socket)
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    data = json.dumps(device)
    try:
        # Connect to TCP server and send data
        sock.connect((tcpHost, tcpPort))
        sock.send(data)
    except socket.error:
        logger.log(logging.ERROR, "Unable to connect to %s:%s. Please check your Node RED flow." % (tcpHost, tcpPort))
    finally:
       sock.close()