Re: [wsrm] Sync/Async HTTP bindings

[Sunil Kunisetty <sunil.kunisetty@oracle.com>]

 Peter -

"Furniss, Peter" wrote:

> I don't want to stir up the entire REST hornet's nest, but is in
> necessarily a POST request in all cases, especially in polling for an
> ack message ?  Or is this effectively nailed down elsewhere ?

 All the existing RM Headers are complex enough and are sent with
 the initial client msg/content and hence GET is pretty much ruled out.

 The (new) RM Header for polling may be simple enough and sent
 stand-alone and 'could' be sent as GET. But I don't see a value-add
 in the GET alternative especially if we want to support piggy-backing
 both ways going forward.

 Since there is a slight possibility of GET, I specifically wanted to say
 Sync/Async SOAP HTTP POST bindings [1]. However, others on the
 conf. call. felt un-necessary.

 -Sunil

 [1] - This is not the same as WSDL bindings... Infact, wsdl doesn't have
         anything like SOAP HTTP bindings.. It has  'soap', 'http get', and
         'http post' bindings..

>
>
> Peter
>
> > -----Original Message-----
> > From: Dave Ingham [mailto:dave.ingham@arjuna.com]
> > Sent: 22 May 2003 23:28
> > To: wsrm@lists.oasis-open.org
> > Subject: [wsrm] Sync/Async HTTP bindings
> >
> >
> > Following up on my action point from the last teleconference,
> > here are proposed definitions for WS-RM Synchronous and
> > Asynchronous HTTP bindings. Thanks to Sunil for comments and
> > suggestions.
> >
> > Synchronous SOAP HTTP binding:
> > We say that a synchronous SOAP HTTP binding is in use if the
> > outbound Reliable Message is sent in the HTTP POST request
> > and the Acknowledgment Message is contained in the
> > corresponding HTTP response message. We refer to this binding
> > as "synchronous" in order to imply the WS-RM exchange
> > inherits the blocking behaviour of the HTTP exchange.
> >
> > Asynchronous SOAP HTTP binding:
> > We say that an asynchronous SOAP HTTP binding is in use if
> > the Acknowledgement Message is sent in a separate HTTP POST
> > request/response exchange from the outbound Reliable Message.
> > We refer to this HTTP binding as "asynchronous" in order to
> > emphasize that the WS-RM message exchanges are not tied to
> > the blocking request/response behaviour of the HTTP
> > transport. Two alternate usage patterns are possible. We say
> > that the "callback" pattern is being used if the
> > Acknowledgement Message is contained in the HTTP POST request
> > of a second HTTP exchange operating in the opposite direction
> > to the one containing the outbound Reliable Message. We say
> > that the "polling" pattern is being used if a second HTTP
> > POST request is issued in the same direction as the one
> > containing the outbound Reliable Message to act as a request
> > for acknowledgement. The Acknowledgement Message is contained
> > in the HTTP response to this request. This polling pattern is
> > expected to be used in situations where it is inappropriate
> > for the sender of reliable messages to receive HTTP requests.
> >
> > Any comments?
> >
> > Best regards,
> >
> > Dave.
> >
> >
> > You may leave a Technical Committee at any time by visiting
> http://www.oasis-open.org/apps/org/workgroup/wsrm/members/leave_workgrou
> p.php
>
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