README.md

natsub

How to demo

Run Nats in Docker

First of all, build a docker image under directory docker. Then run a corresponding container.

docker build -t natsForNatsub .
docker run -it -d -p 4222:4222 -e TOPIC=topic.example.prefix.1 -e MESSAGE=hello natsForNatsub

This container will publish a topic topic.example.prefix.1 every four seconds.

Instruct Nats

Configure Nats address in class com.natsub.ws.server.WebSocketService

......

	@ServerEndpoint(value = "/ws/wsservice")
	public class CIWebSocket {

		private static Logger log = Logger.getLogger(CIWebSocket.class);
		
		// parameter should be a string consist of nats server ips which is joined by ';'
		protected static MessageProcessor processor = new MessageProcessor("http://1.1.1.1:4222;http://2.2.2.2:4222");
		
......

Run Natsub project as a Web app

Run this project in a web server.

Demo on web

Access it on web page. After subscribing the topic and registering a handler, the topic presently can be received and shown in the text area.