---
title: Write a simple HTTP server
sidebarTitle: Simple HTTP Server with Bun
mode: center
---

This starts an HTTP server listening on port `3000`. It responds to all requests with a `Response` with status `200` and body `"Welcome to Bun!"`.

See [`Bun.serve`](/runtime/http/server) for details.

```ts server.ts icon="/icons/typescript.svg"
const server = Bun.serve({
  port: 3000,
  fetch(request) {
    return new Response("Welcome to Bun!");
  },
});

console.log(`Listening on ${server.url}`);
```
