how to use Private Networking between different service in one environment

alipbudiman

HOBBY

10 months ago

i have python service (Flask) as server and go service as client. the flask server run on port 8080. i try to access private networking using go by using

        resp, err := http.Post(
        "http://myflaskserver.railway.internal:8080/api/test",
        "application/json",
        bytes.NewBuffer(jsonData),
    )

but the return error is:

Post "http://myflaskserver.railway.internal:8080/api/test";: dial tcp [ip addr]:8080: connect: connection refused

routing from flask is

@app.route('/api/test', methods=['POST'])
@limiter.limit("100 per minute")
def test():
    try:
        messages = request.get_json()
        logging.info("msg recive")
        logging.info(str(messages))
        return jsonify({
            "status":"ok",
            "message":str(messages), 
        }), 200

    except Exception as e:
        logging.error(f"Error processing data: {str(e)}")
        return jsonify({'error': 'Internal server error'}), 500