RUI_BID Improperly Handles Lua_Peek_Data Causing Data Truncation

 Last reviewed: April 17, 1997
Article ID: Q151409

The information in this article applies to:
  • Microsoft SNA Server for Windows NT, version 2.11 Service Pack 1

SYMPTOMS

If an LUA RUI application calls RUI_BID followed by RUI_READ, the read data may be missing the leading bytes returned in the RUI_BID lua_peek_data. For example:

  1. Verb: RUI_BID 
       Description:   Notifies the RUI application that a message is waiting
                  to be read using RUI_READ.
   Returns:       lua_peek_data (Contains the first 12 bytes of the
                  message data)

  2. Verb: RUI_READ 
       Description:   Receives responses, SNA commands, and data into Windows
                  LUA application's buffer
   Returns:       the data that has been requested
Using these verbs in this sequence results in the following: 

   Verb:       Returns:

   RUI_BID     the first 12 bytes of the data

   RUI_READ    the 13th through xx  bytes of the data. The first 12 bytes
               are missing in the response.

CAUSE

The RUI_BID verb is attempting to handle the data instead of just "peeking" at it without making any modifications. Then when the RUI_READ verb is called, it checks to see if the first 12 bytes have been read. Since RUI_BID has modified the data, RUI_READ only reads in the 13th through xx bytes of data.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SNA Server 2.11 Service Pack 1. This problem was corrected in the latest Microsoft SNA Server 2.11 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces): 

   S E R V P A C K

Additional query words: prodsna winrui sp1
Keywords : kbbug2.11.sp1 kbfix2.11.sp2 kbnetwork kbprg ntnetserv
Version : 2.11.sp1
Platform : WINDOWS
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.

Last reviewed: April 17, 1997
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.