Celluloid-IO TCPSocket memleak/filehandle leak issue

demo.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'bundler/setup'
require 'celluloid/io'
require 'chromatic'
require 'objspace'

class Client
  include Celluloid::IO

  def initialize
    @socket = nil
    @connecting_timer = nil
    reconnect
    run
  end

  def run
    loop do
      sleep 1
    end
  end

  def disconnect
    return unless @socket
    @socket.close
    @socket = nil
  end

  def reconnect
    puts "connecting ...".green
    if @connecting_timer
      @connecting_timer.cancel
      @connecting_timer = nil
    end
    disconnect
    @socket = TCPSocket.new('localhost', 55555)
  rescue Exception => e
    puts "error while connecting: #{e.inspect}:\n  #{e.backtrace.join("\n  ")}".red
    disconnect
    dump_objects
    @connecting_timer = after(1) {
      reconnect
    }
  end

  def dump_objects
    GC.start(full_mark: true, immediate_sweep: true)
    puts ObjectSpace.count_objects[:T_OBJECT]
    c = ObjectSpace.each_object(Socket) do |s|
      s.close unless s.closed?
    end
    puts "#{c} sockets"
  end
end

Client.new

demo2.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'bundler/setup'

require 'celluloid'
require 'celluloid/io'

class Manager
  include Celluloid
  trap_exit :actor_died

  def initialize
    connect
    run
  end

  def actor_died(actor, reason)
    c = ObjectSpace.each_object(Socket) { |s| }
    puts "#{c} sockets"
    after (1) {
      connect
    }
  end

  def connect
    Connection.new_link.async.connect
  end

  def run
    loop do
      sleep 1
    end
  end

end

class Connection
  include Celluloid::IO

  def connect
    @socket = Celluloid::IO::TCPSocket.new('localhost', 5555)
    # would actually do sensible stuff with the socket now...
  end
end

Manager.new

I have something like:

finalizer :terminate_myactor

def terminate_myactor
        begin       
            @socket.close if [email protected]? && [email protected]? && [email protected]?
        rescue Celluloid::Task::TerminatedError
            begin
                @socket.close if [email protected]? && [email protected]?
            rescue Exception
                # at this point we can assume things are cleaned up enough
            end
        end
end

The operating system will eventually release the socket file handles in the process, after they've been in CLOSE_WAIT for awhile.