# File src/ruby_supportlib/phusion_passenger/loader_shared_helpers.rb, line 353
    def advertise_sockets(output, request_handler)
      request_handler.server_sockets.each_pair do |name, options|
        concurrency = PhusionPassenger.advertised_concurrency_level || options[:concurrency]
        output.puts "!> socket: #{name};#{options[:address]};#{options[:protocol]};#{concurrency}"
      end
    end