tRPC + WebSocket Client

I have a WebSocket between my backend and an external server. I'm trying to get to this:

WebSocket Server → Next.js backend → users

WebSocket Server → Next.js backend → users

I have gone through tRPC's documentation on subscriptions (https://trpc.io/docs/subscriptions) and a few examples, but none seemed to work the way I need it. I currently have it as a query using WebSocket messages cached in a Map:

const cache = Map<number, Status>()
socket.onmessage = ({data}) => data.forEach(d => cache.set(d.id, d))

// then
const { data } = useQuery(undefined, { refetchInterval: 5_000 })

const cache = Map<number, Status>()
socket.onmessage = ({data}) => data.forEach(d => cache.set(d.id, d))

// then
const { data } = useQuery(undefined, { refetchInterval: 5_000 })

Subscriptions / WebSockets | tRPC

Using Subscriptions

8 Replies

Keef•2y ago

I haven’t heard the best things about trpc subscriptions so I haven’t used them. I instead use soketi and pusher js

Keef•2y ago

https://soketi.app/

soketi

Soketi is your simple, fast, and resilient open-source WebSockets server. 📣

Keef•2y ago

Theo has an example up with incorporating it here https://github.com/pingdotgg/zapdos

GitHub

GitHub - pingdotgg/zapdos

Contribute to pingdotgg/zapdos development by creating an account on GitHub.

Keef•2y ago

Soketi has kinda loose documentation but their discord is pretty helpful if you need help

Mocha•2y ago

Thanks! Are you suggesting I let my backend be a WebSocket Client (to get the data from Server A) and also Server to the users?

Keef•2y ago

I use soketi to proxy from backend to front end so my backend triggers an event and then my front end consumes it Its how you would use any managed web socket instance that zapdos repo is a good example So what i'm saying is don't use trpc for this, just use the pusher client

Mocha•2y ago

Thanks again! Yes, it’s pretty clear now and the documentation is good I didn’t need true real-time communication (a 1-min delay is fine) but this should be the cleanest way so I don’t end up with a million useless requests

Keef•2y ago

np np!!

Gaming

Programming

tRPC + WebSocket Client