Routing

• The SOAP specification does not specify how routes might be defined.
• Microsoft's WS-Routing specification is a possible standard.
• A message with WS-Routing would look like:

<S:Envelope
  xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
  <S:Header>
    <m:path xmlns:m="http://schemas.xmlsoap.org/rp/">
      <m:action>http://www.im.org/chat</m:action>
      <m:to>soap://D.com/some/endpoint</m:to>
      <m:fwd>
        <m:via>soap://B.com</m:via>
        <m:via>soap://C.com</m:via>
      </m:fwd>
      <m:rev>
        <m:via/>
      </m:rev>
      <m:from>mailto:henrikn@microsoft.com</m:from>
      <m:id>uuid:84b9f5d0-33fb-4a81-b02b-5b760641c1d6</m:id>
    </m:path>
  </S:Header>
  <S:Body>
    ...
  </S:Body>
</S:Envelope>

• Which says that messages must eventually get to D.com by passing via B.com and C.com first.