RE: [emergency] EDXL and routing over non-SOAP networks

["Bob Wyman" <bob@wyman.us>]

Elysa Jones wrote:
> I was looking to Bob Wyman to chime in on this as he seems to have a good
> bit of experience in the area but missed him on the call too.
	Please accept my apologies for missing the call. I had to make an
unexpected trip and then got confused about the time. I thought it was at
9:00am EST but nobody else was on the line when I called in... I must have
had the wrong time.

	Personally, I think it is quite important that EDXL *not* be a SOAP
only protocol. In any case, I'm unaware of anything that EDXL requires that
would argue for any constraints other then laziness that would limit its
utility to non-SOAP systems. One thing that is important to recognize is
that if you did limit EDXL to SOAP you would be making it very difficult to
deliver EDXL messages as "alerts" since SOAP, which usually runs in a
stateless push mode, can't penetrate most firewalls. Thus, a SOAP only EDXL
would pretty much limit the utility to EDXL to server-to-server
communications. You wouldn't be able to deliver EDXL packets to desktops...
If want to deliver to desktops, you either have to assume proxy/forwarding
systems (like SMTP servers) or continuous connections created from within
the firewall to external systems (e.g. something like Jabber/XMPP or BEEP).
	What we should be doing is defining EDXL as a general system and
then specifying the mappings to the various delivery mechanisms. Thus, there
should be a core EDXL specification and addendums that show how to use it
over SOAP, SMTP, Jabber/XMPP, BEEP, carrier-pigeon, etc.

	bob wyman


-----Original Message-----
From: Elysa Jones [mailto:ejones@warningsystems.com] 
Sent: Thursday, March 17, 2005 10:32 PM
To: Kon Wilms; emergency@lists.oasis-open.org
Subject: Re: [emergency] EDXL and routing over non-SOAP networks

Hey Kon,
As far as I know the discussions about the EDXL header have been SOAP 
exclusive as shown in the documentation handed off to us by the DHS group 
via EIC.  I agree that we must also look at other transports in the future 
but are trying to get this piece worked out first.  While we had "Other 
distribution types in common use" on the agenda for todays meeting, we 
didn't get to that point.  I was looking to Bob Wyman to chime in on this 
as he seems to have a good bit of experience in the area but missed him on 
the call too.  Our next call will be 3/24 at a bit more reasonable time for 
you west coast folks (10:30 EST), I hope you can join.  Hopefully the list 
discussion will continue in the meantime.  Thanks for your comments,
Elysa


At 10:59 PM 3/16/2005, Kon Wilms wrote:
>The subject is fairly self-explanatory. Has anyone looked into this, or 
>have I missed
>something? Are there recommended practices (or even a strawman) for 
>routing EDXL
>messages over non-SOAP networks? Or is EDXL strictly for SOAP distribution?
>
>I foresee having to connect to EDXL sources and route the messages over 
>broadcast
>networks. Reading through the current documents I find the following
issues:
>
>1. In order to route EDXL over a satellite or broadcast network, I will 
>have to essentially parse
>the message, strip out header fields, map these to broadcast headers at 
>the packet extension
>layer, and route the entire message as a 'blob'.
>2. In order to route such messages, one has to know what to target and/or 
>how to filter. Set
>top boxes typically have proprietary targeting if running an application 
>capable of filtering
>targeted data, or are configured via zipcodes (as most providers do). The 
>IFSC wrapper model
>points to the EDXL spec for routing requirements. The EDXL routing block 
>requirements
>indicate SOAP on a rope, URIs and geocodes, and XML. None of this maps 1 
>to 1 over these
>networks.
>
>Any advice / comments / suggestions ? Or am I jumping the gun?
>
>Cheers
>Kon
>
>
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