> ## Documentation Index
> Fetch the complete documentation index at: https://bun-1dd33a4e-farm-1130affe-ioreader-safe-iteration.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Write a simple HTTP server

This code starts an HTTP server listening on port `3000`. It responds to every request with a `200` status and the body `"Welcome to Bun!"`.

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

```ts server.ts icon="https://mintcdn.com/bun-1dd33a4e-farm-1130affe-ioreader-safe-iteration/YdU-L-DvDTbHppxQ/icons/typescript.svg?fit=max&auto=format&n=YdU-L-DvDTbHppxQ&q=85&s=e8066e3c4fb5aa20e98bd3b2062ca4c8" theme={"theme":{"light":"github-light","dark":"dracula"}}
const server = Bun.serve({
  port: 3000,
  fetch(request) {
    return new Response("Welcome to Bun!");
  },
});

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