WSAddressing

1
WS-Addressing

• F2F Meeting Nov 05
• WSDL extensions for Async support

2
Summary of Main Questions
Enable service to specify asynchronous
capabilities?
Enable asynchronous response binding to be
specified?
Specification of async at operation/interface
level?
Enable granularity of asynchronous capabilities
Async only, async never and full?
3
Summary of decision process
Enable service to specify asynchronous
capabilities?
Enable asynchronous response binding to be
specified?
Specification of async at operation/interface
level?
4
Agreed
Enable service to specify asynchronous
capabilities?
Enable asynchronous response binding to be
specified?
Specification of programming model hint at
operation/interface level to support async?
X
X
Enable granularity of asynchronous capabilities
Async only, async never and full?
Deliver semantics of extension for SOAP/HTTP
5
Specification of Synch/Sync capabilities of
Service

• Asynchronous nature of request response operation
  is determined by wsaReplyTo/FaultTo on request
  header
• Anonymous URI indicates synchronous response for
  SOAP binding (e.g. return response on HTTP
  connection)
• Provide extension to WSDL to enable the
• Possible to specify the synchronous capabilities
  of a binding in WSDL
• Synchronous only vs Asynchronous only vs either

6
Ability to specify Async/sync capabilities at
endpoint

• ltbinding name"StockQuoteSoapBinding"
  type"tnsStockQuotePortType"gt
• ltsoapbinding style"document"
  transport"http//schemas.xmlsoap.org/soap/http"
  /gt
• ltwsawUsingAddressing wsdlrequired"true" /gt
• ltwsawAsync wsdlrequiredtrue/gtfullltwsawAsyn
  cgt
• ltoperation name"GetLastTradePrice"gt
• ltsoapoperation soapaction"http//example.com
  /GetLastTradePrice" /gt
• ltinputgt
• ltsoapbody use"literal" /gt
• lt/inputgt
• ltoutputgt
• ltsoapbody use"literal" /gt
• lt/outputgt
• lt/operationgt

(Example syntax under discussion) NeverSupports
anonymous reply/fault endpoint Always No
support for anonymous reply/fault
endpoint FullFull support