Hono•9mo ago

Node Web Sockets in Hono

Hello all, I'm fairly new to Hono and I've recently picked it up for some of my projects and enjoyed it very much.

Im currently facing problems with one of my projects that uses WebSockets to communicate with Hardware boxes. And I will need another WebSocket as well to communicate with my frontend and mobile application.

I've searched for many solutions online but it looks like Hono with Node WebSockets is rarely talked about.

After a lot of trial and error I finally reached this code to let my socket run with Hono

[1/3]

KazzOP•4/15/25, 9:54 PM

[2/3]

KazzOP•4/15/25, 9:56 PM

However this doesn't look like good code at all and I was expecting it to give me errors in the future. Which it did.

I used with Hono and here is were my problems started showing. A lot of better auth functionalities got limited and some break because of this code. And I'm pretty sure later on other things will break because of this

[3/3]

KazzOP•4/15/25, 9:56 PM

Is there a better way to allow Web socket to run with Hono without creating a server?

Arjix•4/15/25, 9:56 PM

I like the fake parts,

KazzOP•4/15/25, 9:57 PM

Lol i had no idea how many posts i will do xD

KKazz Is there a better way to allow Web socket to run with Hono without creating a se...

Arjix•4/15/25, 9:57 PM

I am pretty sure the docs show exactly that?

KKazz Lol i had no idea how many posts i will do xD

Arjix•4/15/25, 9:57 PM

all parts are

Arjix•4/15/25, 9:57 PM

that's what I meant

AArjix I am pretty sure the docs show exactly that?

KazzOP•4/15/25, 9:58 PM

I looked for it, they only show for Deno and Bun and Cloudflare workers
https://hono.dev/docs/helpers/websocket

WebSocket Helper - Hono

Web framework built on Web Standards for Cloudflare Workers, Fastly Compute, Deno, Bun, Vercel, Node.js, and others. Fast, but not only fast.

Arjix•4/15/25, 9:58 PM

KazzOP•4/15/25, 9:58 PM

Im blind

Arjix•4/15/25, 9:58 PM

we all are

Arjix•4/15/25, 9:59 PM

props to you for pushing through with that hacky way though!

Arjix•4/15/25, 9:59 PM

not giving up is an important skill

Arjix•4/15/25, 9:59 PM

~~but carefully reading the docs is another important skill~~

Memtooth•4/15/25, 10:00 PM

‘
import { Hono } from 'hono';
import { ws } from 'hono/ws';

const app = new Hono();

// Define a WebSocket route
app.get(
'/ws',
ws((ws) => {
console.log('WebSocket connection established.');

// Handle incoming messages
ws.onmessage = (event) => {
console.log('Received:', event.data);
ws.send();
};

// Handle connection close
ws.onclose = () => {
console.log('WebSocket connection closed.');
};
})
);

// Start the app
app.fire();
‘

Arjix•4/15/25, 10:00 PM

yeah I am sure they can read the docs, no need for snippets

Memtooth•4/15/25, 10:00 PM

I was wondering about that lol, here is an example by chatgpt

KazzOP•4/15/25, 10:01 PM

Thanks! Now I have to go rewrite most of my code

KazzOP•4/15/25, 10:01 PM

I'll mark this as solved for now

KKazz Thanks! Now I have to go rewrite most of my code 👍

Arjix•4/15/25, 10:01 PM

well, I hope it is a rewarding experience

Memtooth•4/15/25, 10:02 PM

The funny part is I went to GPT4o to ask for a hono node ws and it came up with something similar to OP

Memtooth•4/15/25, 10:02 PM

I had to also remind it of the middleware to get the above

Arjix•4/15/25, 10:02 PM

is GPT4 actually using the LLM.txt provided by the docs?

Memtooth•4/15/25, 10:02 PM

So dont feel bad even AI isnt aware lol

Arjix•4/15/25, 10:02 PM

if so, sweet

AArjix well, I hope it is a rewarding experience

KazzOP•4/15/25, 10:02 PM

Rewarding is one word for it

Memtooth•4/15/25, 10:02 PM

Not sure

AArjix is GPT4 actually using the LLM.txt provided by the docs?

KazzOP•4/15/25, 10:03 PM

I dont think so, i rarely use GPT4

KazzOP•4/15/25, 10:03 PM

But AI's in general are not up to date with the latest Hono tech thats for sure

Arjix•4/15/25, 10:04 PM

maybe you can directly tell it to search through the LLM.txt?
e.g.

Arjix•4/15/25, 10:05 PM

it actually worked

Arjix•4/15/25, 10:06 PM

https://chatgpt.com/share/67fed846-5bec-8013-9271-5df7e01ad4b6

ChatGPT

ChatGPT - WebSockets in Hono Node.js

Shared via ChatGPT

KazzOP•4/15/25, 10:06 PM

Interesting thet GPT could do it and not Claude

Arjix•4/15/25, 10:07 PM

I did have "Search" enabled as a tool

Arjix•4/15/25, 10:07 PM

does claude have smth similar?

Arjix•4/15/25, 10:07 PM

as an alternative, you can provide https://hono.dev/llms-full.txt as a resource instead

Arjix•4/15/25, 10:08 PM

iirc they call it "embedding"

Arjix•4/15/25, 10:08 PM

or smth

KazzOP•4/15/25, 10:09 PM

RIP my wallet. But yeah i guess Claude cant do this now, or at least on the free version. GPT did it without the "serach" enabled though it wasnt as accurate as the answer you got

Arjix•4/15/25, 10:11 PM

I can't get good results in https://duck.ai
I guess it doesn't enable tools like "Search"

DuckDuckGo AI Chat at DuckDuckGo

DuckDuckGo. Privacy, Simplified.