Q169793: RUI Libraries Don’t Return All Negative Responses to RUI App
Article: Q169793
Product(s): Microsoft SNA Server
Version(s): WINDOWS:2.11,2.11 SP1,2.11 SP2,3.0,3.0 SP1
Operating System(s):
Keyword(s): kbnetwork
Last Modified: 13-JUN-2001
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft SNA Server, versions 2.11, 2.11 SP1, 2.11 SP2, 3.0, 3.0 SP1, on platform(s):
- the operating system: Microsoft Windows NT
-------------------------------------------------------------------------------
SYMPTOMS
========
An RUI application that is written to capture all negative responses is only
notified by the RUI libraries of the first -RSP generated at the host by a
series of bad messages. SNA Server traces indicate that host negative responses
for each "bad" message sent by the RUI application are received by SNA Server,
but only the first negative response is passed to the RUI application.
CAUSE
=====
To improve efficiency, SNA Server treats sequences of RQE chains received from
an RUI application as if they were a single RQE chain. This causes SNA Server to
pass only the first host negative response to the first RU as if it was a
response to all "bad" RU's.
RESOLUTION
==========
Snaservr.exe has been changed to allow the behavior of the SNA Server to be
altered so that all -RSP messages that have the RQE bit set are passed to the
RUI libraries if the following registry parameter is added:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
SnaServr\Parameters\
DONTCOALESCE : REG_SZ [value is not important]
WARNING: Using Registry Editor incorrectly can cause serious, system-wide
problems that may require you to reinstall Windows NT to correct them. Microsoft
cannot guarantee that any problems resulting from the use of Registry Editor can
be solved. Use this tool at your own risk.
Use the following steps to edit the registry:
1. Run Registry Editor (Regedt32.exe).
2. From the HKEY_LOCAL_MACHINE subtree, go to the following key:
\SYSTEM\CurrentControlSet\Services\SnaServr\Parameters
3. On the Edit menu, click Add Value.
4. Add the following values:
"Value Name: DONTCOALESCE
Data Type: REG_SZ
String: YES" (without the quotation marks)
5. Click OK and then quit Registry Editor.
STATUS
======
Microsoft has confirmed this to be a problem in SNA Server for Windows NT
version 2.11, 2.11 SP1, 2.11 SP2, 3.0, and 3.0 SP1.
This problem was corrected in the latest SNA Server version 3.0 U.S. Service
Pack. For information on obtaining this Service Pack, query on the following
word in the Microsoft Knowledge Base (without the spaces):
S E R V P A C K
MORE INFORMATION
================
The following is an excerpt from an SNA trace:
LINKMSG.AFT
DLC ------------------------------------------------------------------
---
-----------
DLC 03020101->01160001 DLC DATA
DLC DAF:09 OAF:09 ODAI:off Normal
DLC RQE FMD BC EC DR1
DLC
DLC ---- Header at address 012C45EC, 1 elements ----
DLC 00000000 00032C00 09090001 01002701 <......,.......'.>
DLC
DLC ---- Element at address 017BCB60, start 10, end 21 ----
DLC 03900061 61616161 6161610A <...aaaaaaaa. >
DLC ------------------------------------------------------------------
---
-----------
data "bbbbbbbb" and "cccccccc" deleted for brevity
DLC ------------------------------------------------------------------
---
-----------
DLC 03020101->01160001 DLC DATA
DLC DAF:09 OAF:09 ODAI:off Normal
DLC RQE FMD BC EC DR1
DLC
DLC ---- Header at address 012C41DC, 1 elements ----
DLC 00050000 60032C00 09090004 01002701 <....`.,.......'.>
DLC
DLC ---- Element at address 017BB5B4, start 10, end 21 ----
DLC 03900064 64646464 6464640A <...dddddddd. >
DLC ------------------------------------------------------------------
---
-----------
DLC 01160001->03020101 DLC DATA
DLC DAF:09 OAF:09 ODAI:off Normal
DLC -RSP FMD SD BC EC DR1
DLC
DLC ---- Header at address 012C41DC, 1 elements ----
DLC 00050000 60032C00 09090001 01002701 <....`.,.......'.>
DLC
DLC ---- Element at address 017BB5B4, start 10, end 16 ----
DLC 87900010 010001 <g...... >
DLC ------------------------------------------------------------------
---
-----------
DLC 03020101->01160001 DLCST RSRC
DLC Credit:4
DLC
DLC ---- Header at address 012C45B8, 0 elements ----
DLC 04050004 60032C00 09090003 01002701 <....`.,.......'.>
DLC ------------------------------------------------------------------
---
-----------
sense codes 10010002 and 10010003 deleted for brevity
DLC ------------------------------------------------------------------
---
-----------
DLC 01160001->03020101 DLC DATA
DLC DAF:09 OAF:09 ODAI:off Normal
DLC -RSP FMD SD BC EC DR1
DLC
DLC ---- Header at address 012C45B8, 1 elements ----
DLC 04050004 60032C00 09090004 01007F00 <....`.,.......<7F>.>
DLC
DLC ---- Element at address 017BB5B4, start 10, end 16 ----
DLC 87900010 010004 <g...... >
DLC ------------------------------------------------------------------
---
-----------
DLC 01160001->03020101 DLC DATA
DLC DAF:09 OAF:09 ODAI:off Normal
DLC RQE FMD BC EC DR1
DLC
DLC ---- Header at address 012C45B8, 1 elements ----
DLC 04050004 60032C00 09090001 01007F00 <....`.,.......<7F>.>
DLC
DLC ---- Element at address 017BB5B4, start 10, end 112 ----
DLC 03900058 58585858 58585858 58585858 <...XXXXXXXXXXXXX>
DLC 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
DLC 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
DLC 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
DLC 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
DLC 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
DLC 58585858 585858 <XXXXXXX >
DLC ------------------------------------------------------------------
---
-----------
CLIINT.AFT
RUI ------------------------------------------------------------------
---
-----------
RUI RUI_READ response
RUI OK - OK
RUI ---- Verb Parameter Block at address 0193ED6C ----
RUI 5200CC00 00000000 00000000 03800000 <R...............>
RUI 00000000 00000000 00000000 00000000 <................>
RUI 03000000 00010400 ACE69301 F0010000 <.........Wl.0...>
RUI 2C000909 00018790 000F0241 00000000 <,.....g....A....>
RUI 00000000 <.... >
RUI ---- Data at address 0193E6AC ----
RUI 10010001 <.... >
RUI ------------------------------------------------------------------
---
-----------
RUI RUI_READ request
RUI ---- Verb Parameter Block at address 0193ED6C ----
RUI 5200CC00 00000000 00000000 03800000 <R...............>
RUI 00000000 00000000 00000000 00000000 <................>
RUI 03000000 00010000 ACE69301 F0010000 <.........Wl.0...>
RUI 00000000 00000000 000F0000 00000000 <................>
RUI 00000000 <.... >
RUI ------------------------------------------------------------------
---
-----------
RUI RUI_READ response
RUI OK - OK
RUI ---- Verb Parameter Block at address 0193ED6C ----
RUI 5200CC00 00000000 00000000 03800000 <R...............>
RUI 00000000 00000000 00000000 00000000 <................>
RUI 03000000 00016400 ACE69301 F0010000 <......d..Wl.0...>
RUI 2C000909 00010390 000F0141 00000000 <,..........A....>
RUI 00000000 <.... >
RUI ---- Data at address 0193E6AC ----
RUI 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
RUI 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
RUI 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
RUI 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
RUI 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
RUI 58585858 58585858 58585858 58585858 <XXXXXXXXXXXXXXXX>
RUI 58585858 <XXXX >
RUI ------------------------------------------------------------------
---
-----------
Additional query words: rui rqe
======================================================================
Keywords : kbnetwork
Technology : kbAudDeveloper kbSNAServSearch
Version : WINDOWS:2.11,2.11 SP1,2.11 SP2,3.0,3.0 SP1
Issue type : kbbug
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1986-2002.