Issue 5527: SECIOP State Machine Discard (sec-rev)
Source: Adiron, LLC (Mr. Polar Humenn, polar(at)adiron.com)
Nature: Uncategorized Issue
Severity: 
Summary: The SECIOP State machine has a problem with Discard context. The
specification currently specifies that if either side sends a Discard
Context, the context is discarded on both sides immediately. Therefore, a
client must wait to send a Discard context considering all messages sent
until it can figure out if all expected messages are received.


This situation causes too much coordination between the upper ORB layers
and the lower transport layers in SECIOP. The SECIOP state machine must be
knowledgeable about requests and whether they expect a repose. Then the
SECIOP message layer must know about GIOP message structures.


The proposed way to do this is when a Discard context is sent, it says
that no more data will be sent in that direction. The peer must respond in
kind with a Discard Context message when all data is sent back. Then the
context shall be closed.


Resolution: 
Revised Text: 
Actions taken:
July 19, 2002: received issue
Discussion: 

End of Annotations:=====
X-Authentication-Warning: marcy.adiron.com: polar owned process doing
-bs 
Date: Fri, 19 Jul 2002 10:28:31 -0400 (EDT) 
From: Polar Humenn <polar@adiron.com> 
To: <issues@omg.org> 
Subject: SECIOP State Machine Discard 



The SECIOP State machine has a problem with Discard context. The
specification currently specifies that if either side sends a Discard
Context, the context is discarded on both sides
immediately. Therefore, a
client must wait to send a Discard context considering all messages
sent
until it can figure out if all expected messages are received.


This situation causes too much coordination between the upper ORB
layers
and the lower transport layers in SECIOP. The SECIOP state machine
must be
knowledgeable about requests and whether they expect a repose. Then
the
SECIOP message layer must know about GIOP message structures.


The proposed way to do this is when a Discard context is sent, it says
that no more data will be sent in that direction. The peer must
respond in
kind with a Discard Context message when all data is sent back. Then
the
context shall be closed.


-------------------------------------------------------------------
Polar Humenn                  Adiron, LLC
mailto:polar@adiron.com       2-212 CST
Phone: 315-443-3171           Syracuse, NY 13244-4100
Fax:   315-443-4745           http://www.adiron.com