DOCUMENT:Q169793 13-JUN-2001 [sna] TITLE :RUI Libraries Don't Return All Negative Responses to RUI App PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:2.11,2.11 SP1,2.11 SP2,3.0,3.0 SP1 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- 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 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 <....`.,........> DLC DLC ---- Element at address 017BB5B4, start 10, end 16 ---- DLC 87900010 010004 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 <....`.,........> DLC DLC ---- Element at address 017BB5B4, start 10, end 112 ---- DLC 03900058 58585858 58585858 58585858 <...XXXXXXXXXXXXX> DLC 58585858 58585858 58585858 58585858 DLC 58585858 58585858 58585858 58585858 DLC 58585858 58585858 58585858 58585858 DLC 58585858 58585858 58585858 58585858 DLC 58585858 58585858 58585858 58585858 DLC 58585858 585858 DLC ------------------------------------------------------------------ --- ----------- CLIINT.AFT RUI ------------------------------------------------------------------ --- ----------- RUI RUI_READ response RUI OK - OK RUI ---- Verb Parameter Block at address 0193ED6C ---- RUI 5200CC00 00000000 00000000 03800000 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 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 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 RUI 58585858 58585858 58585858 58585858 RUI 58585858 58585858 58585858 58585858 RUI 58585858 58585858 58585858 58585858 RUI 58585858 58585858 58585858 58585858 RUI 58585858 58585858 58585858 58585858 RUI 58585858 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. 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