implementing udp server

src/server.js

@@ -0,0 +1,25 @@
+const dgram = require('dgram');
+const server = dgram.createSocket('udp4');
+const app = require('./app')
+
+server.on('error', (err) => {
+  console.log(`Server error:\n${err.stack}`);
+  server.close();
+});
+
+server.on('message', async (msg, rinfo) => {
+  console.log(`Server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+
+  const categories = await app(msg.toString())
+
+  server.send(categories, rinfo.port, rinfo.address, (err) => {
+    if (err) server.close();
+  });
+});
+
+server.on('listening', () => {
+  const address = server.address();
+  console.log(`Server listening ${address.address}:${address.port}`);
+});
+
+server.bind(41234);