I have created a express.js server in which i use socket-io for handling real time notification and then i deployed it in vercel and check it on next-js project then I found then socket is not connected to server but it is connected fine when i check it at localhost So how can i Get rid of that Problem
Hi, !
From the relevant documentation:
Edge Functions and Serverless Functions do not support acting as a WebSocket server. We recommend third-party solutions to enable realtime communication for Deployments.
https://vercel.com/docs/limits/overview#websockets
And from the relevant guide:
The two main approaches to apply this model to stateless serverless functions are:
- Serverless Functions have maximum execution limits and should respond as quickly as possible. They should not subscribe to data events. Instead, we need a client that subscribes to data events and a serverless function that publishes new data. Consider using one of the providers below to implement this approach.
- Rather than pushing data, you can fetch realtime data on-demand. For example, the Vercel dashboard delivers realtime updates using SWR.
https://vercel.com/guides/do-vercel-serverless-functions-support-websocket-connections