fork download 
  1. (1..1024).each {|p| puts [p, (s=TCPSocket.new('localhost', p)).tap {s.setsockopt(Socket::SOL_SOCKET,Socket::SO_REUSEADDR, true); s.close}].join(' => ') rescue next}
Success #stdin #stdout 0.02s 7728KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/LHeMZ5
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
public

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