WebSockets in Hono

import { Hono } from 'hono'
import { upgradeWebSocket } from 'hono/cloudflare-workers'
// or: 'hono/bun', 'hono/deno'

const app = new Hono()

app.get('/ws', upgradeWebSocket((c) => {
  return {
    onOpen(event, ws) {
      console.log('Client connected')
      ws.send('Welcome!')
    },
    onMessage(event, ws) {
      console.log('Received:', event.data)
      ws.send(\`Echo: \${event.data}\`)
    },
    onClose(event, ws) {
      console.log('Client disconnected')
    },
    onError(event, ws) {
      console.log('Error:', event)
    },
  }
}))