POST example
POST /Reservations HTTP/1.1
Host: travelcompany.example.org
Content-Type: application/soap+xml; charset="utf-8"
Content-Length: 492
<?xml version='1.0' ?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" >
<env:Header>
<myns:ReliableMessaging xmlns:myns="http://rm.example/"
type="once-and-only-once"/>
</env:Header>
<env:Body>
<m:retrieveItinerary
env:encodingStyle="http://www.w3.org/2003/05/soap-encoding"
xmlns:m="http://travelcompany.example.org/">
<m:reservationCode>FT35ZBQ</m:reservationCode>
</m:retrieveItinerary>
</env:Body>
</env:Envelope>