update cors and port

Author: ZabihollahNamazi

chat-app/backend/server.js

@@ -2,10 +2,12 @@ import express from "express";
 import cors from "cors";
 
 const app = express();
-const PORT = 3000;
+const PORT = process.env.PORT || 3000;
 
 app.use(express.json());
-app.use(cors());
+app.use(cors({
+  origin: "*"
+}));
 
 let messages = [];
 
@@ -29,7 +31,7 @@ app.post("/", (req, res) => {
   res.status(201).json({ success: true });
 });
 
-app.listen(PORT, () => {
-  console.log("Server running on port 3000");
+app.listen(PORT, "0.0.0.0", () => {
+  console.log(`Server running on ${PORT}`);
 });