XMLP HTTP Request

POST /StockQuote HTTP/1.1
Host: www.stockquoteserver.com
Content-Type: text/xml; charset="utf-8"
Content-Length: nnnn
XMLP/SOAPAction: "Some-URI"

<XMLP:Envelope
  xmlns:XMLP="http://schemas.xmlsoap.org/soap/envelope/"
  XMLP:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
   <XMLP:Body>
       <m:GetLastTradePrice xmlns:m="Some-URI">
           <symbol>DIS</symbol>
       </m:GetLastTradePrice>
   </XMLP:Body>
</XMLP:Envelope>

One-way message: sender, receiver, intermediary along the message path.