Unable to Cancel TEST_RTS_AND_POST if Verb Issued Synchronously

• Microsoft SNA Server, versions 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0, 4.0 SP1

SYMPTOMS

If an APPC/CPI-C conversation is deallocated while a TEST_RTS_AND_POST command is outstanding, the TEST_RTS_AND_POST may complete after the calling application has deleted the post event, causing an application exception.

Steps to Reproduce the Problem

1. Issue the TEST_RTS_AND_POST verb synchronously.



2. End the application by issuing a DEALLOCATE command.



3. In the middle of the application's shutdown, TEST_RTS_AND_POST might set the event causing an application exception.

CAUSE

The APPC library included in SNA Server was not designed to cancel an outstanding TEST_RTS_AND_POST call when an APPC/CPI-C conversation was deallocated.

RESOLUTION

Microsoft has confirmed this to be a problem in SNA Server versions 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0, and 4.0 SP1. We are researching this problem in SNA Server version 3.0 and will post more information here in the Knowledge Base as it becomes available.

This problem was corrected in the latest SNA Server version 4.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

MORE INFORMATION

This update will issue a CANCEL_TEST_RTS_AND_POST command when the DEALLOCATE command is issued.

Additional query words:

Keywords :
Version : WINDOWS:3.0 SP1,3.0 SP2,3.0 SP3,4.0,4.0 SP1
Platform : WINDOWS
Issue type : kbbug