[bug] getting "already subscribed" on page refresh about centrifugo HOT 3 CLOSED

Hello @xfourat , this happens since you are subscribing to the same channel ns:channel_id using server-side subscription (by setting channels in token) and using client-side subscription (centrifuge.newSubscription("ns:channel_id", {token: token});).

Think you misunderstood what channels in connection token mean. Probably you decided that it's allowed channel to subscribe (permissions) – but it's not. When you have channels in token Centrifugo subscribes client to these channels automatically at the moment of connection establishment. So client-side subscription then receives already subscribed - because one client can't subscribes to the same channel twice.

from centrifugo.

Thank you @FZambia

If centrifugo subscribes client to these channels automatically at the moment of connection establishment then how can have the sub object client side to use it for receiving messages ?

I have tried the followings without success:

• const sub = centrifuge.getSubscription("ns:channel_id", {token: token});
• const sub = centrifuge.subscription("ns:channel_id", {token: token});

from centrifugo.

Check out this tutorial for example: https://centrifugal.dev/docs/tutorial/intro - it shows how to use subscription object. Just do not use server-side subscriptions at all (i.e. avoid using channels in connection token) - and subscribe with properly constructed subscription token. And it will work. If you still have questions after reading tutorial - please reach out in communities https://centrifugal.dev/docs/getting-started/community - and I'll try to help.

from centrifugo.