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From "MURRAY,BRYAN (HP-FtCollins,ex1)" <>
Subject RE: SOAPAction
Date Wed, 07 Feb 2001 21:57:06 GMT
I think Axis should be configurable enough so that a system may be deployed
as you describe. This is certainly a reasonable method for dispatching,
especially for some intermediaries.

However, I think if we compare a SOAP message with an HTTP message the
following hold true:
	SOAP headers	~are related to~	HTTP headers
	SOAP Body		~is related to~	HTTP contents
and just as an HTTP processor parses the HTTP headers, a SOAP processor will
parse the SOAP headers. And just as an HTTP processor may be able to do its
job without parsing the contents, a SOAP processor may be able to do its job
without parsing the Body. Since we are working at a different abstraction in
the protocol stack, I don't think we can make a direct comparison between

Just as it should not be mandatory that the SOAP document be parsed before
identifying the end service, it also should not be mandatory for the end
service to be identified before beginning parsing - the document will
contain the information needed.

Bryan Murray

-----Original Message-----
From: James Snell []
Sent: Wednesday, February 07, 2001 10:47 AM
To: ''
Subject: RE: SOAPAction

Remember that not focusing on Routing per se, we're talking about
dispatching an incoming message to a deployed service.  Whatever the
deployed service does with the message (processes the SOAP message, does not
process the soap message) is irrelevant at this point.  The task of
receiving a message, determining which service needs to process that message
and thereby forwarding the message on to the service does not require
parsing the envelope at all, nor should we ever design the system to do so
since we can make absolutely no assumptions as to what is in the contents of
the message.  

I should never be forced to parse a message simply to find out where it
needs to go (the equivalent to this would be a Web Server being forced to
parse the contents of a HTTP POST in order to figure out which
script/servlet it is being posted to).

Secondly, SOAP does not require routing information in the Header to make it
transport independent.  All the transport layer needs to know is where and
how to send the message (a URI).

- James

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