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Subject: [NEW ISSUE]: Suggest the restricted use of anonymous URI
- From: Doug Davis <dug@us.ibm.com>
- To: ws-rx@lists.oasis-open.org
- Date: Thu, 12 Jan 2006 17:43:28 -0500
Title: suggest the restricted use of
anonymous URI
Description/justification:
When an AS uses an RMS to reliably send
messages to an RMD, the RMS will need to be able to resend the un-acked
messages at will. If the AS uses a target URL or wsa:To value such
that the RMS can not, at its own discretion, initiate the (re)sending of
messages then the RMS would be severely limited in its ability to complete
its job. To this end the RM spec should discourage the use of wsa:To
values that would put the RMS in this situation, like the anonymous URI.
Of course, there may be times that using the anonymous URI _and_
RM can work and so we shouldn't totally ban the use of anonymous URI but
we should make people aware that w/o some other mechanism, a generic WSA+RM
soap stack would not be able to support this. Note, that while this
is phrased in the context of wsa:To, for replies the RMD becomes the RMS
and the wsa:ReplyTo becomes the wsa:To - so it would mean that we'd, implicitly,
be discouraging the use of the anonymous URI in wsa:ReplyTo when people
would want responses sent reliably.
Target: core
Type: design
Proposal:
After line 441 of [1] add:
Messages sent using this protocol MUST
NOT use a wsa:To value that would prohibit the RM Source from retransmitting
unacknowledged messages. For example, using the anonymous URI, without
any additional transmission mechanism, would restrict an RM Source's ability
to re-establishing a new connection to the RM Destination when a re-transmission
of a message is needed.
thanks,
-Doug
[1] http://www.oasis-open.org/apps/org/workgroup/ws-rx/download.php/16095/wsrm-1.1-spec-wd-08.pdf
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