add server code

server.js

@@ -0,0 +1,44 @@
+// server.js
+import express from 'express';
+import { WebSocketServer } from 'ws';
+import { createServer } from 'http';
+import WebSocket from 'ws';
+
+const app = express();
+const server = createServer(app);
+const wss = new WebSocketServer({ server });
+
+const OPENAI_API_KEY = process.env.OPENAI_API_KEY;
+
+wss.on('connection', (clientWs) => {
+  const openaiWs = new WebSocket('wss://api.openai.com/v1/realtime', {
+    headers: {
+      Authorization: `Bearer ${OPENAI_API_KEY}`
+    }
+  });
+
+  openaiWs.on('open', () => {
+    console.log('Connected to OpenAI');
+  });
+
+  // Proxy messages from client to OpenAI
+  clientWs.on('message', (message) => {
+    if (openaiWs.readyState === WebSocket.OPEN) {
+      openaiWs.send(message);
+    }
+  });
+
+  // Proxy messages from OpenAI back to client
+  openaiWs.on('message', (message) => {
+    if (clientWs.readyState === WebSocket.OPEN) {
+      clientWs.send(message);
+    }
+  });
+
+  openaiWs.on('close', () => clientWs.close());
+  clientWs.on('close', () => openaiWs.close());
+});
+
+server.listen(3001, () => {
+  console.log('WebSocket proxy listening on ws://localhost:3001');
+});