#!/usr/bin/env ruby
#
# The Head Time Stamp -Request returns the first available date for historical data requests

require 'bundler/setup'
require 'ib/symbols'

# First, connect to IB TWS and subscribe for events. 
ib = IB::Connection.new :client_id => 1112  do | gw | #, :port => 7497 # TWS

	# Subscribe to TWS alerts/errors
	gw.subscribe(:Alert, :HeadTimeStamp) { |msg| puts msg.to_human }
	# Set log level
	gw.logger.level = Logger::FATAL # DEBUG  -- INFO -- WARN -- ERROR  -- FATAL

end
# 
# We demonstrate it with Apple
#

		ib.send_message :RequestHeadTimeStamp, contract: IB::Symbols::Stocks.aapl
    ib.wait_for :HeadTimeStamp


		puts " First datatset for  #{IB::Symbols::Stocks.aapl.description} : #{ib.received[:HeadTimeStamp].date.join( " " )} "
 Thread.new do 
	sleep 1
	puts "\n******** Press <Enter> to quit *********\n\n"
 end
STDIN.gets
 puts "\n *** canceling Reqest ..." 
		ib.send_message :CancelHeadTimeStamp
# ..
puts "Printing all gathered data \n\n"
pp ib.received[ :HeadTimeStamp ]