fork download
copy 
  1. require 'socket' # :( forgot that
  2. (1..128).each {|p| puts [p, (s=TCPSocket.new('localhost', p)).tap {s.setsockopt(Socket::SOL_SOCKET,Socket::SO_REUSEADDR, true); s.close}].join(' : ') rescue next}
  3. puts 'done'
Success #stdin #stdout 0.02s 7904KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
done
https://ideone.com/vmTS12
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!