Socket.io Proxy Boilerplate

An example of using http-proxy to proxy WebSocket requests to a separate server.

Usage

• npm install
• npm start
  (or npm run start:dev to use nodemon & show debug messages)
• Open http://localhost:4000 in the browser and check the console

To show debug messages in the browser use:

localStorage.setItem( 'debug', 'socket.io-client:*,-socket.io-client:socket' );

Testing

To verify that sockets are being used instead of polling, open the dev tools Network tab and find the request using the websocket protocol.
It should have a status code of 101 Switching Protocols and it's frames tab should show all the incoming ping messages from the server.

Notes

• Socket.io will still do some (~3) initial polling requests before upgradeing to a WebSocket connection.
  If you change the clientside transports to transports : ['websocket'] these initial polling requests will stop but you lose the polling fallback.