1 files changed, 37 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/server/connections.rb b/actioncable/lib/action_cable/server/connections.rb
new file mode 100644
index 0000000000..47dcea8c20
--- /dev/null
+++ b/actioncable/lib/action_cable/server/connections.rb
@@ -0,0 +1,37 @@
+module ActionCable
+  module Server
+    # Collection class for all the connections that's been established on this specific server. Remember, usually you'll run many cable servers, so
+    # you can't use this collection as an full list of all the connections established against your application. Use RemoteConnections for that.
+    # As such, this is primarily for internal use.
+    module Connections
+      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 receive and send to it. So there's a 3 second heartbeat running on all connections. If the beat fails, we automatically
+      # disconnect.
+      def setup_heartbeat_timer
+        EM.next_tick do
+          @heartbeat_timer ||= EventMachine.add_periodic_timer(BEAT_INTERVAL) do
+            EM.next_tick { connections.map(&:beat) }
+          end
+        end
+      end
+
+      def open_connections_statistics
+        connections.map(&:statistics)
+      end
+    end
+  end
+end