How to store ws for each connected client

[StarMonk]

I am trying to store data received from websocket to REDIS and maintain ws relationship between the user and WebSocket id

But the only option, I see is: getRemoteAddressAsText, but this option is unreliable, since multiple users can have the same address.

ws returns uWS.WebSocket {} and I looked into the WebSocket interface, but I can't find any unique Identifier.

[e3dio]

let id = 0;
const wsMap = new Map();

app.ws('/', {
   open: ws => {
      ws.id = ++id;
      wsMap.set(id, ws);
      console.log('open', ws.id);
   },
   close: (ws, code) => {
      wsMap.delete(ws.id);
      console.log('close', ws.id, code);
   }  
});

wsMap.get(id).send('Hello');

[StarMonk]

I didn't realize, I can set one by my own :)

Thanks a lot

[StarMonk]

Is there anyway, I can pass extra headers during open and read it from open? like ws.req.headers <- something like this

[StarMonk]

@e3dio - I tried looking into Upgrade example: https://github.com/uNetworking/uWebSockets.js/blob/master/examples/Upgrade.js

But can't determine, if I can set the extra value there which I can read from open.

[e3dio]

// pass values from ws upgrade handler

app().ws('/', {
   upgrade: (res, req, context) => { // request was made to open websocket, res req have all properties for request, cookies etc
      // add code here to determine if ws request should be accepted or denied
      // deny request with "res.writeStatus('401').end()"
      res.upgrade( // upgrade to websocket
         { ip: res.getRemoteAddressAsText() }, // 1st argument sets which properties to pass to ws object, in this case ip address
         req.getHeader('sec-websocket-key'),
         req.getHeader('sec-websocket-protocol'),
         req.getHeader('sec-websocket-extensions'), // 3 headers are used to setup websocket
         context // also used to setup websocket
      )
   },
   open: ws => {
      console.log(ws.ip)
   }
});

[StarMonk]

Thanks a ton, @e3dio - I will try it out.