title: How to get raw request that Savon sends
body: <p>I am using Savon 2.6 to implement a client for a SOAP service.
  I have to save raw requests and raw responses in the database. 
  To get raw XML response isn't a problem, but how can I get a raw XML request?</p>
  
  <p>I use Savon in the following way:</p>
  
  <pre><code>client = Savon.client(wsdl: "http://blabla.com/bla.wdsl")
  response = client.call(:operation_name, message: {param1: "a", param2: "b'})
  response.to_xml # =&gt; get raw XML response
  </code></pre>