Q165148: BUG: TN3270 Server Disconnects Clients When a Popup Message Occu

Article: Q165148
Product(s): Microsoft SNA Server
Version(s): WINDOWS:3.0,3.0 SP1
Operating System(s): 
Keyword(s): kbnetwork
Last Modified: 15-JUN-2001

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The information in this article applies to:

- Microsoft SNA Server, versions 3.0, 3.0 SP1, on platform(s):
   - the operating system: Microsoft Windows NT 
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SYMPTOMS
========

TN3270 Client disconnects from the TN3270 Server when a client receives a
message. The message received by the client was sent by a host application from
another user.

CAUSE
=====

The TN3270E Server received an RQD message from the host that contained the EC
(End Chain) indicator. The TN3270 server sent the data to the client, and
changed its internal state to let the client have send-direction. The TN3270
server then receives data from the client before receiving a positive response
from the client for the previous message. When the TN3270 server tries to send
this data from the client across the RUI interface, it is rejected with the
error LUA_RSP_BEFORE_SENDING_REQ.

RESOLUTION
==========

The fix is to discard data received from the client if the client owes the
server a positive response. The TN3270 Server service has been updated to
correct this problem.

To resolve this problem, obtain the latest service pack for SNA Server version
3.0.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug was corrected in SNA Server version 3.0
Service Pack 2. 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:

======================================================================
Keywords          : kbnetwork 
Technology        : kbAudDeveloper kbSNAServSearch
Version           : WINDOWS:3.0,3.0 SP1
Issue type        : kbbug
Solution Type     : kbfix

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