# node:net

> How Elide supports Node's `net` module: TCP and Unix-domain servers and clients, BlockList, SocketAddress and isIP match Node, with sandbox network flags.

`node:net` matches [Node's `net`](https://nodejs.org/api/net.html) for TCP and Unix-domain servers and clients,
`BlockList`, `SocketAddress`, and the `isIP` helpers; `--allow-net` and `--deny-net` apply under the
[sandbox](https://elide.help/docs/sandbox).

## Example

```js
// net.mjs
import net from "node:net";

const server = net.createServer((socket) => socket.pipe(socket));
server.listen(0, "127.0.0.1", () => {
  const client = net.connect(server.address().port, "127.0.0.1", () => client.end("ping"));
  client.on("data", (data) => console.log("echo:", data.toString()));
  client.on("close", () => server.close(() => console.log("server closed")));
});
console.log(net.isIP("::1"), net.isIPv4("127.0.0.1"));
```

`elide run net.mjs` prints:

```text
6 true
echo: ping
server closed
```

<!-- api-reference:start 13690a705d0b -->
## Reference

**Status:** Partial · Not measured

### `net` exports

`BlockList`, `Server`, `Socket`, `SocketAddress`, `Stream`, `connect`, `createConnection`, `createServer`, `getDefaultAutoSelectFamily`, `getDefaultAutoSelectFamilyAttemptTimeout`, `isIP`, `isIPv4`, `isIPv6`, `setDefaultAutoSelectFamily`, `setDefaultAutoSelectFamilyAttemptTimeout`

### Not implemented

`BoundSocket`.
<!-- api-reference:end -->