TypeError: require(...).listen is not a function
23,328
Solution 1
require('socket.io')
returns the socket.io Server class. It's a class, not an instance and thus not something you call .listen()
on. Depending upon what exactly you're trying to accomplish, there are a number of different ways you can use that Server class as you can see here in the doc. For example, you can do this:
const Server = require('socket.io');
const io = new Server(somePort);
or this:
const io = require('socket.io')(somePort);
or to share an existing http server:
const io = require('socket.io')(plainHttpServer);
Solution 2
The below snippet worked for me:
const io = require('socket.io')(server);
...
server.listen(3000)
Author by
user1467328
Updated on July 05, 2022Comments
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user1467328 almost 2 years
I wrote this, but errors come up and i dont know how to fix
var http = require('http'); var clientHtml = require('fs').readFileSync('client.html'); var plainHttpServer = http.createServer(function (request, response) { response.writeHead(200, { 'Content-Type': 'text/html' }); response.end(clientHtml); }).listen(8080); var files = require('fs'); var io = require('socket.io').listen(plainHttpServer); io.set('origins', ['localhost:8080', '127.0.0.1:8080']);
and this error comes, i don't know how to fix, tell me
var io = require('socket.io').listen(plainHttpServer); ^ TypeError: require(...).listen is not a function
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Squivo about 3 yearsJust to add to this - versions prior to the latest did support the listen() function