chore: add test server

test/server/websocket/app.js

@@ -0,0 +1,33 @@
+const Koa = require('koa');
+const route = require('koa-route');
+const websockify = require('koa-websocket');
+
+const app = websockify(new Koa());
+
+app.ws.use(function (ctx, next) {
+  ctx.websocket.send('connection succeeded!');
+  return next(ctx);
+});
+
+app.ws.use(
+  route.all('/test', function (ctx) {
+    // ctx.websocket.send('Hello World');
+    ctx.websocket.on('message', function (message) {
+      // do something with the message from client
+
+      if (message !== 'ping') {
+        let data = JSON.stringify({
+          id: Math.ceil(Math.random() * 1000),
+          time: new Date().getTime(),
+          res: `${message}`,
+        });
+        ctx.websocket.send(data);
+      }
+      console.log(message);
+    });
+  })
+);
+
+app.listen(3380, () => {
+  console.log('websocket server is listen in: ' + 3380);
+});