box-o-sand/ruby-sockets/line-protocol/client.rb

require 'date'
require 'time'
require 'socket'

DATEFMT = '%Y%m%d%H%M%S'

def recordify(msg)
  code = '%-31s' % 'DERP'
  num = '%-12d' % (rand.to_s.tr('.', '0')[0,5]).to_i
  timestamp = Time.now.strftime(DATEFMT)
  len = '%-6d' % msg.length
  "#{code}#{num}#{len}#{timestamp}#{msg.gsub(/\r/, '\r').gsub(/\n/, '\n')}\r\n"
end

def main
  print "What to say?: "
  msg = gets
  TCPSocket.open('127.0.0.1', 15778) do |sock|
    sock.send(recordify(msg), 0)
    response = sock.recv(66)
    sock.close

    puts "raw response --> #{response.inspect}"
    code = response[0,31].to_s.strip
    num = response[31,12].to_s.strip
    raw_timestamp = response[49,14].to_s.strip
    timestamp = DateTime.strptime(raw_timestamp, DATEFMT)

    puts "code: '#{code}'"
    puts "num: '#{num}'"
    puts "timestamp: '#{timestamp}'"
  end
end

if __FILE__ == $0
  main
end