title: WSO2 ESB - HTTP 401 Unauthorized Error
body: <p>I have been creating a Proxy service using service chaining mechanism. 
  1. First I make a call to an endpoint, get the result and send the result to a sequence. 
  2. In the sequence, I have a data mapper and then a property to specify the username and password to a secure endpoint and then send mediator to call an endpoint.</p>
  
  <p>However, I have been getting the following error:
  HTTPSender Unable to sendViaPost to url[endpoint Url] org.apache.axis2.AxisFault: Transport error: 401 Error: Unauthorized,
  With the description as "This request requires HTTP authentication"</p>
  
  <p>The solution I have tried:
  1. Tried adding a property "FORCE_HTTP_1.0" to true before making a call to the endpoint. 
  But nothing seems to work. Any help would be appreciated. </p>
  
  <p>Thanks in advance. </p>