Explicitly handle HUP.

Author: ioquatix

lib/async/container/controller.rb

@@ -201,6 +201,10 @@ def run
 					raise Terminate
 				end
 
+				hangup_action = Signal.trap(:HUP) do
+					raise Hangup
+				end
+				
 				self.start
 
 				while @container&.running?
@@ -228,6 +232,7 @@ def run
 				# Restore the interrupt handler:
 				Signal.trap(:INT, interrupt_action)
 				Signal.trap(:TERM, terminate_action)
+				Signal.trap(:HUP, hangup_action)
 			end
 		end
 	end

lib/async/container/error.rb

@@ -36,6 +36,14 @@ def initialize
 			end
 		end
 
+		class Hangup < SignalException
+			SIGHUP = Signal.list['HUP']
+			
+			def initialize
+				super(SIGHUP)
+			end
+		end
+		
 		# Represents the error which occured when a container failed to start up correctly.
 		class SetupError < Error
 			def initialize(container)