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RE: Async Web Services

From: Naresh Agarwal <nagarwal@in.firstrain.com>
Date: Wed, 10 Jul 2002 13:02:49 +0530
Message-ID: <205C5F16CA92F94484F054E94520F4D72BEB56@mail.in.firstrain.com>
To: <www-ws@w3.org>
Cc: "Krishna Sankar" <ksankar@cisco.com>

Hi Christopher

I'm sorry..please ignore my previous mail..

I just came to know that WSDL 1.2 does have an explicit 
requirement (R097[1]) to allow description of 
asynchronous message exchange patterns.

But i'm not sure how much work is being done in this direction.

Also, i don't think, that first working draft of WSDL1.2, which was
publish recently, mentions anything about the asynchronous 
message exchange patterns

thanks,

regards,
Naresh

1. http://www.w3.org/TR/2002/WD-ws-desc-reqs-20020429/#desintwserv

> -----Original Message-----
> From: Christopher B Ferris [mailto:chrisfer@us.ibm.com]
> Sent: Monday, July 08, 2002 8:44 PM
> To: Naresh Agarwal
> Cc: Krishna Sankar; www-ws@w3.org
> Subject: RE: Async Web Services
> 
> 
> 
> It isn't at all clear to me what is necessary in WSDL to "describe" a
> SOAP1.2
> MEP. I suppose that some of the defined properties might need 
> to be exposed
> (like reqres:role, reqres:immediateDestination URI and 
> possibly web:method)
> but it is my
> understanding that the MEPs are intended to be "described" by 
> means of a
> formal
> specification such as that found in the SOAP1.2 Part 2 Adjuncts
> specification [1] and [2].
> 
> Thus, WSDL shouldn't need much more than a means of 
> identifying the MEP
> in play for a given port by means of its assigned URI and any 
> properties
> that might
> apply.
> 
> Cheers,
> 
> Chris
> 
> [1] 
> http://www.w3.org/TR/2002/WD-soap12-part2-20020626/#singlereqrespmep
> [2] http://www.w3.org/TR/2002/WD-soap12-part2-20020626/#soapresmep
> 
> 
> 
> 
>                                                               
>                                                                     
>                       "Naresh Agarwal"                        
>                                                                     
>                       <nagarwal@in.firs        To:       
> "Krishna Sankar" <ksankar@cisco.com>, <www-ws@w3.org>         
>            
>                       train.com>               cc:            
>                                                                     
>                       Sent by:                 Subject:  RE: 
> Async Web Services                                                   
>                       www-ws-request@w3                       
>                                                                     
>                       .org                                    
>                                                                     
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>                                                                     
>                       07/08/2002 11:15                        
>                                                                     
>                       AM                                      
>                                                                     
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> 
> 
> 
> 
> Hi Krishna,
> 
> >            If I am correct the only two modes of operation 
> are fire and
> > forget or req-response. Asynchronous web services or more precisely,
> > stateful web services require some sort of correlation between
> > invocations. ebXML has the conv id which could be used for 
> this. Most
> > probably the future web services interactions would be based
> > on SOAP 1.2
> > MEPs.
> 
> 
> I agree that future Web Services interactions would be based 
> on SOAP1.2
> MEPs.
> But is there *enough* support in WSDL1.1/WSDL1.2 to describe 
> these MEPs?
> 
> 
> thanks,
> regards,
> Naresh Agarwal
> 
> 
> 
> 
> 
> 
> 
Received on Wednesday, 10 July 2002 03:33:13 GMT

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