$ollama run qwen2.5-coder:7b

>>> build me a Nostr relay

Creating a Nostr relay involves several steps. Nostr is an open-source

social networking protocol that enables users to communicate without

relying on centralized servers. Here’s a basic guide to building a simple

Nostr relay using JavaScript and Node.js.

### Prerequisites

1. **Node.js**: Ensure you have Node.js installed.

2. **npm (Node Package Manager)**: It usually comes with Node.js.

3. **Basic understanding of JavaScript and Node.js**

### Step-by-Step Guide

#### 1. Create a New Project

First, create a new directory for your project and initialize it with npm.

```bash

mkdir nostr-relay

cd nostr-relay

npm init -y

```

#### 2. Install Dependencies

Install necessary packages for handling HTTP requests and WebSocket

connections.

```bash

npm install express ws

```

#### 3. Set Up the Server

Create a file named `server.js` and set up a basic Express server with

WebSocket support.

```javascript

const express = require('express');

const WebSocket = require('ws');

const app = express();

const port = process.env.PORT || 8080;

app.use(express.static('public'));

// Create a WebSocket server

const wss = new WebSocket.Server({ noServer: true });

wss.on('connection', (socket, request) => {

console.log('New client connected');

socket.on('message', (data) => {

const message = JSON.parse(data);

// Broadcast the message to all connected clients except the

sender

wss.clients.forEach((client) => {

if (client !== socket && client.readyState === WebSocket.OPEN)

{

client.send(JSON.stringify(message));

}

});

});

socket.on('close', () => {

console.log('Client disconnected');

});

});

app.get('/ws', (req, res) => {

req.socket.setTimeout(0);

req.socket.setNoDelay(true);

req.socket.setKeepAlive(true, 0);

wss.handleUpgrade(req, req.socket, Buffer.alloc(0), (ws) => {

wss.emit('connection', ws, req);

});

});

app.listen(port, () => {