require 'uri'
require 'net/http'
require 'net/https'

@toSend = {
"date" => "2012-07-02",
"aaaa" => "bbbbb",
"cccc" => "dddd"
}.to_json

uri = URI.parse("https:/...")
https = Net::HTTP.new(uri.host,uri.port)
https.use_ssl = true
req = Net::HTTP::Post.new(uri.path, initheader = {'Content-Type' =>'application/json'})
req['foo'] = 'bar'
#req['Content-Type'] = 'application/json'
req.body = "[ #{@toSend} ]"
res = https.request(req)
puts "Response #{res.code} #{res.message}: #{res.body}"