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Re: WSA From

From: Mark Little <mark.little@jboss.com>
Date: Thu, 09 Feb 2006 20:02:12 +0000
Message-ID: <43EB9FC4.609@jboss.com>
To: Mark Nottingham <mnot@mnot.net>
CC: Paul Fremantle <pzfreo@gmail.com>, public-ws-addressing@w3.org

So is that for or against the EPR ;-)?

Mark.


Mark Nottingham wrote:
> Speaking just as me...
>
> It sounds like there are a lot of potential use cases for From.
>
> What's less than clear is whether they're compatible; i.e., if WS-Foo 
> says wsa:From should contain a URI that corresponds to the MAC address 
> of your ethernet controller, WS-Bar says wsa:From should contain a 
> urn:uuid for your service (as we're already seeing from our friends 
> from the North, apparently), and WS-Baz says it should be your IP 
> address, how do you use these specifications in a "composable" fashion?
>
> Of course, From could changed to allow more than one URI, but then how 
> do you pick which one is the appropriate one? E.g., if I see three 
> http:// URIs in there, which one is MY From?
>
> Smashing a bunch of different use cases into one vague semantic bucket 
> isn't interoperable; it's asking for trouble. I see no reason why 
> these different cases can't specify different headers to contain the 
> information they need; yes, WS-Addressing is one boat that they could 
> hop onto on the way to standards paradise, but there are others.
>
> Cheers,
>
>
> On 2006/02/08, at 4:11 AM, Mark Little wrote:
>
>>
>> +1
>>
>> I don't see what it adds in removing it, but I can see what it 
>> removes by removing it.
>>
>> Mark.
>>
>>
>> Paul Fremantle wrote:
>>> Hi
>>>
>>> I'd like to write in support of wsa:From.
>>>
>>> 1) A lot of mediation (SLA provision, security checks, etc) is based 
>>> on who/where the message came from. From is useful for that.
>>> 2) WSA makes WS-* much more "peer-to-peer". But knowing where a 
>>> message comes from is a key part of that.
>>>
>>> For example we in Apache Synapse are allowing users to do custom 
>>> routing based on wsa:From.
>>>
>>> Paul
>>>
>>> --Paul Fremantle
>>> VP/Technology, WSO2 and OASIS WS-RX TC Co-chair
>>>
>>> http://bloglines.com/blog/paulfremantle
>>> paul@wso2.com <mailto:paul@wso2.com>
>>>
>>> "Oxygenating the Web Service Platform", www.wso2.com 
>>> <http://www.wso2.com>
>>
>>
>
>
> -- 
> Mark Nottingham     http://www.mnot.net/
>
Received on Thursday, 9 February 2006 20:02:03 GMT

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