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module ActionCable
module Server
# Collection class for all the connections that have been established on this specific server. Remember, usually you'll run many Action Cable servers, so
# you can't use this collection as a full list of all of the connections established against your application. Instead, use RemoteConnections for that.
module Connections # :nodoc:
BEAT_INTERVAL = 3
def connections
@connections ||= []
end
def add_connection(connection)
connections << connection
end
def remove_connection(connection)
connections.delete connection
end
# WebSocket connection implementations differ on when they'll mark a connection as stale. We basically never want a connection to go stale, as you
# then can't rely on being able to communicate with the connection. To solve this, a 3 second heartbeat runs on all connections. If the beat fails, we automatically
# disconnect.
def setup_heartbeat_timer
@heartbeat_timer ||= Concurrent::TimerTask.new(execution_interval: BEAT_INTERVAL) do
Concurrent.global_io_executor.post { connections.map(&:beat) }
end.tap(&:execute)
end
def open_connections_statistics
connections.map(&:statistics)
end
end
end
end
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