I know you asked a while ago, but the information remains for those who are researching. I did an analysis with reverse engineering in version 2.3.0 (socket.io) and 3.4.2 (engine.io) and got the following: The first number is the type of communication for engine.io, using the enumerator: Key Value 0 “open” 1 “close” 2 “ping” … Read more
In my server I had to var io = require(‘socket.io’)(httpServer, {path: ‘/mysubdir/socket.io’})` In my client I had to <script src=”http://www.example.com/mysubdir/socket.io/socket.io.js”></script> and also var socket = io.connect(‘http://www.example.com’, {path: “/mysubdir/socket.io”});`
Consider this rather more complete answer linked in a comment above on the question: https://stackoverflow.com/a/24425207/1449799 The clients in a room can be found at io.nsps[yourNamespace].adapter.rooms[roomName] This is an associative array with keys that are socket ids. In our case, we wanted to know the number of clients in a room, so we did Object.keys(io.nsps[yourNamespace].adapter.rooms[roomName]).length In … Read more
In socket.io 1.0 they provide a better way for this. Each socket automatically joins a default room by self id. Check documents: http://socket.io/docs/rooms-and-namespaces/#default-room So you can emit to a socket by id with following code: io.to(socketid).emit(‘message’, ‘for your eyes only’);