Chapter 4: initial recipe samples

Chapter04/websocket-server/node-client.js

@@ -0,0 +1,18 @@
+const WebSocket = require('ws')
+const ws = new WebSocket('ws://localhost:3000')
+
+ws.on('open', () => {
+    console.log('Connected')
+})
+
+ws.on('close', () => {
+    console.log('Disconnected')
+})
+
+ws.on('message', (message) => {
+    console.log('Received:', message)
+})
+
+setInterval(() => {
+    ws.send("Hello")
+}, 3000)