Windows NT LUA Application Hangs After 32767 SLI_SEND Commands (139329)
The information in this article applies to:
- Microsoft SNA Server 2.11, when used with:
- the operating system: Microsoft Windows NT
This article was previously published under Q139329 SYMPTOMS
When you run an LUA/SLI application on Windows NT, the application stops
responding (hangs) after issuing 32767 SLI_SEND commands. The next SLI_SEND
command is never sent to the Host.
CAUSE
The SLI_SEND hangs because an internal counter in the RUI library is being
incremented for each send, but never being decremented. Because the counter
is a 2 byte integer, it is wrapping to zero after 32,767 sends.
If the SNA Server RUI library and the server are receiving large inbound
RUs from the host, then the RUI library never decrements its internal send
credit. This can cause two possible errors:
- If the SNA Server does return a credit message after receiving data from
the RUI library, eventually the RUI library's send credit is incremented
so much that it becomes zero, causing the RUI library to stop sending
data because it thinks it has run out of credit.
- If the RUI application is pumping data to the node (for example,
transferring a file to the host), then it floods the node, because the
RUI library always believes that it has enough credit.
RESOLUTION
Microsoft has updated the files, WINRUI.DLL ,for 16-bit clients, and
WINRUI32.DLL, for 32-bit clients, and ACSRUI.DLL for OS/2 clients to
correct this problem.
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: | 10/23/2003 |
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| Keywords: | kbbug kbfix KB139329 |
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