SLI Application Fails With LUA_RESERVED_FIELD_NOT_ZERO        [sna]
ID: Q197629    CREATED: 18-DEC-1998   MODIFIED: 18-DEC-1998
WINDOWS:3.0SP3,4.0SP1
WINDOWS
PUBLIC | 

======================================================================
---------------------------------------------------------------------
The information in this article applies to:

 - Microsoft SNA Server, versions 3.0 Service Pack 3 and 4.0 Service
   Pack 1
---------------------------------------------------------------------

SYMPTOMS
========

When running an SLI application on SNA Server 3.0 Service Pack 3 or SNA
Server 4.0 Service Pack 1, the SLI application may fail unexpectedly with
the following return code:

  primary_rc = LUA_PARAMETER_CHECK (0x0001)
  secondary_rc = LUA_RESERVED_FIELD_NOT_ZERO (0x00000006)

This problem does not occur with earlier versions of SNA Server.

CAUSE
=====

The SNA Server SLI DLL (Winsli32.dll) was incorrectly using the RUI
lua_extension_list_offset while formatting a chain of messages to send over
the RUI interface. This problem was inadvertently introduced while adding
the new SLI feature described in the following Knowledge Base article:

  Article-ID: Q186054
  Title: SLI_SEND/SLI_RECEIVE Can Send/Receive A Maximum Of 65 KB Of Data


MORE INFORMATION
================

The following excerpt from an SNA Server LUA API trace illustrates the
problem:

   SLI   -----------------------------------------------------------
   SLI   SLI_SEND request
   SLI   ---- Verb Parameter Block at address 001B519C ----
   SLI   52004600 00000000 00000000 04000000     <R.F.............>
   SLI   00000000 00000000 00000000 00000000     <................>
   SLI   E0268600 00008407 BA9E1400 44060000     <.&f...d.....D...>
   SLI   00000000 00000090 A0000100 00000000     <................>
   SLI   00000000 0000                           <......          >
   SLI   ---- Data at address 00149EBA ----
   RUI  ------------------------------------------------------------
   RUI   RUI_WRITE request
   RUI   ---- Verb Parameter Block at address 00862990 ----
   RUI   52004400 00000000 00000000 04800000     <R.D.............>
   RUI   02000000 53324631 46303839 00000000     <....S2F1F089....>
   RUI   35000000 00000001 BA9E1400 B02E3064     <5.............0d>
   RUI   00000000 00000290 80010000 00000000     <................>
   RUI   00000000                                <....            >
   RUI   ---- Data at address 00149EBA ----
   RUI   ----------------------------------------------------------
   RUI   RUI_WRITE response
   RUI   OK - OK
   RUI   ---- Verb Parameter Block at address 00862990 ----
   RUI   52004400 00000000 00000000 04800000     <R.D.............>
   RUI   02000000 53324631 46303839 00000000     <....S2F1F089....>
   RUI   35000000 00000001 BA9E1400 B02E3064     <5.............0d>
   RUI   2C000109 000C0290 80010041 00000000     <,..........A....>
   RUI   00000000                                <....            >
   RUI   ---- Data at address 00149EBA ----
   RUI
   RUI ------------------------------------------------------------

NOTE: This RUI_WRITE lua_extension_list_offset contains
data but should have been zero:

   RUI   RUI_WRITE request
   RUI   ---- Verb Parameter Block at address 008629E0 ----
   RUI   52004400 00000000 00000000 04800000     <R.D.............>
   RUI   02000000 53324631 46303839 18628600     <....S2F1F089.bf.>
   RUI   35000000 00000001 BA9F1400 B02E3064     <5.............0d>
   RUI   2C000109 000C0090 00010000 00000000     <,...............>
   RUI   00000000                                <....            >
   RUI   ---- Data at address 00149FBA ----
   RUI   -----------------------------------------------------------------
   RUI   RUI_WRITE response
   RUI   PARAMETER_CHECK - RESERVED_FIELD_NOT_ZERO
   RUI   ---- Verb Parameter Block at address 008629E0 ----
   RUI   52004400 00010000 00000006 04800000     <R.D.............>
   RUI   02000000 53324631 46303839 18628600     <....S2F1F089.bf.>
   RUI   35000000 00000001 BA9F1400 B02E3064     <5.............0d>
   RUI   2C000109 000C0090 00010000 00000000     <,...............>
   RUI   00000000                                <....            >
   RUI   ---- Data at address 00149FBA ----