url = 'http://someurl'
request =  {"data" => data}.to_json
response = RestClient.post(url,request,:content_type => :json, :accept => :json)

curl -XHEAD -H x-auth-user: myusername -H x-auth-key: mykey "url"

response = RestClient.post(
  url,
  request,
  :content_type => :json, :accept => :json, :'x-auth-key' => "mykey")

RestClient::Request.execute(
   :method => :get or :post,
   :url => your_url,
   :headers => {key => value}
)

params = {id: id, device: device, status: status}
headers = {myheader: "giorgio"}

RestClient.put url, params, headers