WebSocket doesn't work with Next framework.

[leonardossss]

I'm trying to use websocket with next-http-proxy-middleware, and it doesn't connect to my server, it just keeps the connection pending

next path: 'src/pages/api/[...all].ts'

import NextHttpProxyMiddleware from 'next-http-proxy-middleware'
import { NextApiRequest, NextApiResponse } from 'next/types'

export default (req: NextApiRequest, res: NextApiResponse) => NextHttpProxyMiddleware(req, res, {
    target: 'http://localhost:2000',
    ws: true
})

socket.io path: '/api/socket'

[murilob1337]

I'm also having the same problem. Only polling works, ws or wss protocol doesn't work.

[stegano]

Hi @leonardossss

Unfortunately, Nextjs doesn't handle the ws(weboscket) scheme, so the client request cannot reach this middleware.

So, as @murilob1337 said, you should use HTTP polling (supported by some libraries like socket.io) instead of websockets.

Please let me know if I'm not understanding something

[StringKe]

Is there any way to do proxy websocket? , such as replacing the code in node_modules/next

[TopCommit]

Any solution?

[stegano]

@StringKe @TopCommit Hi there I checked your comment late. Sorry. Unfortunately, as far as I know, there is no official way to support Next.js.