How to Authenticate user using Socketio-jwt node.js

Question

I asked this question on Github socketio-jwt . 3 days later no answer, and couldnt find any answers on google either.

Question 1:

Is it secure enough to check token on connection? do I need to check token on every event? Eg check on every getNews event

socket.on("getNews", function(data, callback){
// check token and if valid return news via callback
});

vs

Check on connection/reconnection

io.use(function(socket, next) { // using general example not socketio-jwt
// check token and if valid proceed
});

Question 2:

how to know which user the particular token belongs to? One way would be to add id to payload, however, is it best practice?

Answer 1

I would check the token on every event, to make sure.

Yes, adding a user ID to your payload is fine-- as long as your secret stays secret.