Hono supports Socket.io?

[PatricioPoncini]

Hello everyone, I would like to know if Hono supports Socket.io, as I want to set up a socket service with Socket.io but I'm having issues with the ServerType. Since Socket.io only accepts one of these types: http.Server | HTTPSServer | Http2SecureServer | number

And when I start a server with Hono, it returns the type ServerType so the Socket.io library gives me problems because it does not accept that typing. Does anyone know how I can set up the server with Hono and pass it as an argument to Socket.io?

[azharalifauzi]

Hi @PatricioPoncini ,

So I came across to this problem as well last week. But, if you take a look at hono ServerType , under the hood the value of it actually Server | Http2Server | Http2SecureServer. So you can do this to solve the type error like this

import { Server } from 'socket.io'
import { Server as HttpServer } from 'http'
import { Hono } from 'hono'

const app = new Hono()
const server = serve(app)

const io = new Server(server as HttpServer)

Note that the type cast depends on the option you pass to serve function. If you pass createServer option using node:https than you should use Http2Server instead.

Hope this helps :)

[aslammac]

can you provide full code?

[czfadmin]

// server
import { serve } from '@hono/node-server';
import { Hono } from 'hono';
import { Server } from 'socket.io';
import { Server as HttpServer } from 'http';
const app = new Hono();

app.get('/', (c) => {
  return c.text('Hello Hono!');
});

const server = serve(
  {
    fetch: app.fetch,
    port: 3000,
  },
  (info) => {
    console.log(`Server is running: http://${info.address}:${info.port}`);
  }
);

const ioServer = new Server(server as HttpServer, {
  path: '/ws',
  serveClient: false,
});
ioServer.on("error", (err) => {
  console.log(err)
})

ioServer.on("connection", (socket) => {
  console.log("client connected")
})

setInterval(() => {
  ioServer.emit("hello", "world")
},1000)

[andrewk604]

Is there a way to do this in Bun?

[czfadmin]

Is there a way to do this in Bun?

Bun is not written this way.