title: Persistent HTTP Connection with RestSharp
body: <p>I am using RestSharp to consume a REST web service and will be making a large volume of calls in a short time period.</p>
  
  <p>The documentation for the API strongly recommends the use of persistent HTTP connections to do this, however I am struggling to get this working with RestSharp.</p>
  
  <p>I have tried adding the "Connection: Keep-alive" header to the request but when I do this the request fails with the following error - "Keep-Alive and Close may not be set using this property."</p>
  
  <p>Can I not use this header with RestSharp or is there something else I need to do to enable this?</p>
  
  <p>Can anyone help? Thanks.</p>