actioncable/lib/action_cable/server/connections.rb
# frozen_string_literal: true
# :markup: markdown
module ActionCable
module Server
# # Action Cable Server Connections
#
# 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 ||= event_loop.timer(BEAT_INTERVAL) do
event_loop.post { connections.each(&:beat) }
end
end
def open_connections_statistics
connections.map(&:statistics)
end
end
end
end