Ws: Connecting ws client to socket.io server

[NodePing]

Any way to get the ws client to talk with a socket.io server?
When I try, I currently get a socket hang up on the client.
On the socket.io server side, the log says "destroying non-socket.io upgrade"

I realize the issue is likely on the socket.io end of things, but I thought maybe someone had gotten it working and was willing to share.

[3rd-Eden]

You should be using the Socket.IO client to connect to socket.io not pure websockets. Socket.IO adds to much things on top of websockets to make this plausable like a required HTTP handshake to retrieve the session id as well as custom message encoding and decoding

[sand123]

With current version of ws and socket.io this snippet worked for me

const WebSocket = require('ws');

const ws = new WebSocket('ws://server/socket.io/?EIO=3&transport=websocket', {
  perMessageDeflate: false
});

ws.on('open', function open() {
  console.log("opened");
});

[JamesNewton]

@sand123 workaround did not work around for me.

const chat = new WebSocket( 'ws://'+chatserver+'/chat/?EIO=3&transport=websocket', {perMessageDeflate: false} ) chat.on('error', function(e){ console.log("chat error:"+e.message) }) chat.on('open', function() { console.log('chat open'); //chat.send('name'); });

I always get chat error:socket hang up. On the other hand, this is running on a robot with an old version of Ubuntu 12 so maybe that's the issue. I was really hoping this could work because it needs to be lightning fast. Oh well. I wish there had been an open issues or a note that said "This isn't known to work to connect to a server running Socket.IO" so I hadn't wasted my time.

[olvenmage]

In your case, shouldn't it be

const chat = new WebSocket( 'ws://'+chatserver+'/chat/socket.io/?EIO=3&transport=websocket', {perMessageDeflate: false} )

?

[tudiantuan]

With current version of ws and socket.io this snippet worked for me

const WebSocket = require('ws');

const ws = new WebSocket('ws://server/socket.io/?EIO=3&transport=websocket', {
  perMessageDeflate: false
});

ws.on('open', function open() {
  console.log("opened");
});

Can you show me example on this issue?