test websocketserver

wstest2/.gitignore

+node_modules/
\ No newline at end of file

wstest2/client.js

+'use strict'
+
+const WebSocket = require('ws')
+
+let ws = new WebSocket('ws://localhost:8080')
+
+ws.onopen = function () {
+  console.log('open')
+  ws.send('hello')
+}

wstest2/package-lock.json

+{
+  "name": "server",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "async-limiter": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
+    },
+    "ws": {
+      "version": "6.2.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.1.tgz",
+      "integrity": "sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==",
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
+    }
+  }
+}

wstest2/package.json

+{
+  "name": "server",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "ws": "^6.2.1"
+  }
+}

wstest2/server.js

+var port = 8080
+
+var WebSocketServer = require('ws').Server
+
+var wss = new WebSocketServer({ port: port })
+
+console.log('listening on port: ' + port)
+
+wss.on('connection', function connection (ws) {
+  ws.on('message', function (message) {
+    console.log('message: ' + message)
+    ws.send('echo: ' + message)
+  })
+
+  console.log('new client connected!')
+  ws.send('connected!')
+})