LUA Program Receives Host Sign-On Screen Twice and then Hangs (137482)
The information in this article applies to:
- Microsoft SNA Server 2.0, when used with:
- the operating system: Microsoft Windows NT
- Microsoft SNA Server 2.1, when used with:
- the operating system: Microsoft Windows NT
- Microsoft SNA Server 2.11, when used with:
- the operating system: Microsoft Windows NT
This article was previously published under Q137482 SYMPTOMS
When you start your LUA program, the SSCP Welcome message screen appears
twice, and the LUA program seems to hang.
CAUSE
Under certain timing conditions, when an LUA session is closed (with an
SLI_CLOSE statement) and immediately reopened (with an SLI_OPEN statement)
over a fast link, SNA Server may incorrectly resend the host SSCP welcome
message a second time to the LUA program. As a result the LUA program may
hang.
The following message flow causes this problem:
LUA Program SNA Server Host
-----------------------------------------------------
<- UNBIND
UNBIND +RSP ->
NOTIFY(SLU disabled) ->
SLI_CLOSE ->
SLI_OPEN ->
<- SSCP welcome message
<- SLI_OPEN(SSCP welcome message)
<- NOTIFY +RSP
NOTIFY(SLU enabled) ->
<- SSCP welcome message
SLI_RECEIVE ->
<- SLI_RECEIVE (SSCP welcome message)
<- NOTIFY +RSP
RESOLUTION
To resolve this problem, upgrade to SNA Server version 2.11 and install the
updated file SNASERVR.EXE.
To work around this problem, you can put a small delay in the application
between the SLI_CLOSE completing and issuing the new SLI_OPEN command.
STATUS
Microsoft has confirmed this to be a problem in SNA Server for Windows NT.
This problem was corrected in the latest SNA Server for Windows NT, 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):
| Modification Type: | Major | Last Reviewed: | 12/5/2003 |
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| Keywords: | kbbug kbfix KB137482 |
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