verifone spree payment gateway. VX680 Terminal

verifone.rb

require "rubygems"
require "net/telnet"

params = "
      T,  ##= 1 String [required] Message Type. 'T' to be passed, to define a transaction record
      ,     ##= 2 Account Number. This field is no longer used. Use Field 24
      01,   ##= 3 Integer [required] Transaction Type. ‘01’ – Purchase, ‘02’ – Refund, ‘04’ – Cash advance
      0000, ##= 4 Integer [required] Modifier. 
      ,     ##= 5 Reserved, Leave Blank
      ,     ##= 6 Reserved, Leave Blank
      ,     ##= 7 Reserved, Leave Blank
      ,     ##= 8 Reserved, Leave Blank
      ,     ##= 9 Reserved, Leave Blank
      ,     ##= 10 Reserved, Leave Blank
      1.23, ##= 11 Decimal [required] Total value of the transaction including tax
      ,     ##= 12 Decimal [conditional] Total Cash Back Value for purchase with Cash back
      ,     ##= 13 Reserved, Leave Blank
      ,     ##= 14 Reserved, Leave Blank
      ,     ##= 15 Reserved, Leave Blank
      ,     ##= 16 Reserved, Leave Blank
      ,     ##= 17 Reserved, Leave Blank
      ,     ##= 18 Reserved, Leave Blank
      ,     ##= 19 Reserved, Leave Blank
      ,     ##= 20 Reserved, Leave Blank
      ,     ##= 21 Reserved, Leave Blank
      ,     ##= 22 Reserved, Leave Blank
      ,     ##= 23 String [optional] Reference (we pass in Order Number Rxxxxxxxxxx)
      ,     ##= 24 Decimal [optional] Account ID, Defines merchant parameter set to be used
      ,     ##= 25 Decimal [conditional] Gratuity/Tip
      ,     ##= 26 Decimal [conditional] Non Discounted Items value
      ,     ##= 27 Integer [conditional]Register for Account On File. Populated if: Not Set = 0, Do Not Register = 1, Register = 2, Register Only = 3
      ,     ##= 28 Decimal [conditional] Token ID. ID assigned to the stored Account On File details
    "
    params.to_s
    
    begin
      printo = Net::Telnet::new(
        "Host" => "192.168.0.20",
        "Port" => 25000,
        "Prompt" => /0x06/,
        "Timeout" => 10
      )
      # printo.cmd(  )
      # printo.login( "user"=>'admin', "password"=>1234)
      printo.cmd(params.strip + "\r\n")
      
      # TODO: On successful connenction and data, the terminal confirms with an ASCII "\0x06". 
      # Port 25000 disconnects.
      # Terminal opens and sends Response on port 25001
      # Process Response
      
      printo.close

    rescue Exception => e
      @ero = "Class: #{e.class} => Message: #{e.message}"
    end