# Server
require 'socket'

server = TCPServer.open(2000)  # Socket to listen on port 2000
loop {                         # Servers run forever
  client = server.accept       # Wait for a client to connect
  sleep 1
  client.puts(Time.now.ctime)  # Send the time to the client
  client.close                 # Disconnect from the client
}


# Client
require 'socket'

hostname = 'localhost'
port = 2000
timeout = 0.7

s = TCPSocket.open(hostname, port)
secs = Integer(timeout)
usecs = Integer((timeout - secs) * 1_000_000)
optval = [secs, usecs].pack("l_2")
s.setsockopt Socket::SOL_SOCKET, Socket::SO_RCVTIMEO, optval
s.setsockopt Socket::SOL_SOCKET, Socket::SO_SNDTIMEO, optval

begin
  a = Time.now
  # read is required, as gets never times out.
  while line = s.read
    puts line.chop
  end
rescue => ex
  puts ex.message
  puts "Waited #{Time.now - a} sec"
end
s.close