you need an external service to have websockects with nextjs as you correctly guessed

Edge runtime mention websockets

but maybe edge runtime is diferent... idk

i just have heard it doesn't work (well maybe)

Is edge and servless same thing?

kinda and kinda not

edge is very instant and small code vs serverless is more of an actual server with cold boot time but more resources

also edge is close to user whereas serverless is one place

Oh ok

also:

"[Websocket? Unfortunately, Next.js is built for serverless, which means you can’t run a websocket server without using a custom node.js server. Custom server isn’t allowed by platforms like Vercel, also not a recommended way.

Generally, we will use 3rd party services, such as Ably Realtime. They work great for serverless environments. Websocket needs an actual persistent server, and Next.js doesn’t come with that by default. ](https://nextjs-forum.com/post/1140603766396158032#message-1140605090621837472)"

yeah, they are in theory but in vercel context there are some diferences

I enabled edge runtime
Got Module not found: Can't resolve 'crypto'

yeah edge server doesn't support node specifc things and only normal browser JS

Also prob cuz im using socket.io

Nvm get the same error without using socket.io