module ActionCable module Connection # Makes it possible for the RemoteConnection to disconnect a specific connection. module InternalChannel extend ActiveSupport::Concern private def internal_redis_channel "action_cable/#{connection_identifier}" end def subscribe_to_internal_channel if connection_identifier.present? callback = -> (message) { process_internal_message(message) } @_internal_redis_subscriptions ||= [] @_internal_redis_subscriptions << [ internal_redis_channel, callback ] EM.next_tick { pubsub.subscribe(internal_redis_channel, &callback) } logger.info "Registered connection (#{connection_identifier})" end end def unsubscribe_from_internal_channel if @_internal_redis_subscriptions.present? @_internal_redis_subscriptions.each { |channel, callback| EM.next_tick { pubsub.unsubscribe_proc(channel, callback) } } end end def process_internal_message(message) message = ActiveSupport::JSON.decode(message) case message['type'] when 'disconnect' logger.info "Removing connection (#{connection_identifier})" websocket.close end rescue Exception => e logger.error "There was an exception - #{e.class}(#{e.message})" logger.error e.backtrace.join("\n") close end end end end