research/building-tools/p2p-chat.md

Tutorial: Simple P2P Chat w/ Hypercore

Step-by-Step

1. Cores:

const corestore = Corestore('./chat')
const messages = corestore.get('messages')

1. Swarm:

swarm.join(messages.discoveryKey)
swarm.on('connection', c => messages.replicate(c))

1. Send/Recv:

await messages.append(JSON.stringify({from: me, text}))
for await (const block of messages.createReadStream({live:true})) {
  const msg = JSON.parse(block)
  display(msg)
}

1. Run: npm i hypercore hyperswarm corestore; node chat.js [topic]

Extend: Corestore namespaces (users/rooms), hyperdrive attachments.