ppears 
        as the last component of the URI path component. The call 
        parameters appear as the query component and are named after
        the formal arguments of the target procedure.</p>
    <h3 id="RequestHeaders">6.1. HTTP Header Requirements</h3>
    <p>
        Regardless of whether a remote procedure call is made using
        HTTP GET or POST, the HTTP request message MUST specify the following headers:</p>
    <ul>
      <li>The <code><a href="http://www.w3.org/Protocols/rfc2616/rfc261