UDP packet recieve test code...

udp_packet_recieve_test.rb

#!/usr/bin/ruby
#
# UDP packet recieve test...
#
require 'socket'

addr = '127.0.0.1'
port = 12345

puts "== create socket for recv =="
s = UDPSocket.new
s.bind(addr, port)

puts "== send test data =="
c = UDPSocket.new
c.send("hello " + Time.new.to_s, 0, addr, port)

10.times do
  puts "== sleep =="
  sleep 1  
end
  
puts "== recv data =="
puts s.recv 1024