angularjs - Pusher "existing subscription to channel" error -


i getting following error pusher:

pusher : error : {"type":"websocketerror","error":     {"type":"pushererror","data":{"code":null,"message":"existing subscription  channel room-1"}}}

i use angular. every time enter "room" state, set pusher subscribe room channel. however, if @ point leave room state , come back, tries subscribe second time , throws above error. tried first check existing subscription using pusher.channel, doesn't seem work. have idea what's wrong? (my coffeescript code below)

pusher = $pusher($window.client)  unless pusher.channel('room-' + $scope.room.id)   room_channel = pusher.subscribe('room-' + $scope.room.id)

i should note pusher.channel seems work when manually execute in chrome console...

i've been getting same issue on last few days, using angular-pusher well..


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