add hello-ws project

michaelliao · michaelliao · commit a3ef3eb76a2c · 2016-09-01T21:59:34.000+08:00
diff --git a/samples/node/web/ws/hello-ws/.vscode/launch.json b/samples/node/web/ws/hello-ws/.vscode/launch.json
@@ -0,0 +1,25 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Start",
+            "type": "node",
+            "request": "launch",
+            "program": "${workspaceRoot}/app.js",
+            "stopOnEntry": false,
+            "args": [],
+            "cwd": "${workspaceRoot}",
+            "preLaunchTask": null,
+            "runtimeExecutable": null,
+            "runtimeArgs": [
+                "--nolazy"
+            ],
+            "env": {
+                "NODE_ENV": "development"
+            },
+            "externalConsole": false,
+            "sourceMaps": false,
+            "outDir": null
+        }
+    ]
+}
diff --git a/samples/node/web/ws/hello-ws/app.js b/samples/node/web/ws/hello-ws/app.js
@@ -0,0 +1,47 @@
+const WebSocket = require('ws');
+
+const WebSocketServer = WebSocket.Server;
+
+const wss = new WebSocketServer({
+    port: 3000
+});
+
+wss.on('connection', function (ws) {
+    console.log(`[SERVER] connection()`);
+    ws.on('message', function (message) {
+        console.log(`[SERVER] Received: ${message}`);
+        setTimeout(() => {
+            ws.send(`What's your name?`, (err) => {
+                if (err) {
+                    console.log(`[SERVER] error: ${err}`);
+                }
+            });
+        }, 1000);
+    })
+});
+
+console.log('ws server started at port 3000...');
+
+// client test:
+
+let count = 0;
+
+let ws = new WebSocket('ws://localhost:3000/ws/chat');
+
+ws.on('open', function () {
+    console.log(`[CLIENT] open()`);
+    ws.send('Hello!');
+});
+
+ws.on('message', function (message) {
+    console.log(`[CLIENT] Received: ${message}`);
+    count++;
+    if (count > 3) {
+        ws.send('Goodbye!');
+        ws.close();
+    } else {
+        setTimeout(() => {
+            ws.send(`Hello, I'm Mr No.${count}!`);
+        }, 1000);
+    }
+});
diff --git a/samples/node/web/ws/hello-ws/package.json b/samples/node/web/ws/hello-ws/package.json
@@ -0,0 +1,22 @@
+{
+    "name": "hello-ws",
+    "version": "1.0.0",
+    "description": "Hello WebSocket example",
+    "main": "start.js",
+    "scripts": {
+        "start": "node app.js"
+    },
+    "keywords": [
+        "ws",
+        "websocket"
+    ],
+    "author": "Michael Liao",
+    "license": "Apache-2.0",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/michaelliao/learn-javascript.git"
+    },
+    "dependencies": {
+        "ws": "1.1.1"
+    }
+}
