Article: Q152009
Product(s): Microsoft SNA Server
Version(s): 2.0,2.1,2.11,3.0
Operating System(s):
Keyword(s): kbnetwork kbProgramming
Last Modified: 14-FEB-2002
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The information in this article applies to:
- Microsoft SNA Server for Windows NT, versions 2.0, 2.1, 2.11, 3.0
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SUMMARY
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The following questions regarding the SNA Server LUA RUI_WRITE verb were raised
by an application developer.
Generally, when issuing the RUI_WRITE verb, the successful posting response comes
back within a second or two. However, in certain circumstances the RUI_WRITE
verb takes longer than 30 seconds to complete, which is when our communications
interface assumes the call is not going to complete, and returns a failure to
the calling application.
Questions:
1. As we cannot issue another RUI_WRITE verb on the same flow until the previous
one returns, are we always guaranteed to get a response from an RUI_WRITE
verb, even if it takes longer than 30 seconds?
Answer: Yes, the RUI application is guaranteed to receive a response to the
RUI_WRITE call. If errors occur anywhere on the connection, session, client-
server LAN session, and so forth, RUI_WRITE will complete with an error,
otherwise it will complete successfully.
2. Is there a way of canceling an outstanding RUI_WRITE call? I am unaware of
any method; my understanding is that RUI_PURGE only works with outstanding
RUI_READS, and that RUI_TERM only works with RUI_INIT.
Answer: RUI_PURGE can only be used for canceling RUI_READ verbs. There is no
way of canceling an outstanding RUI_WRITE, apart from closing the entire
session with RUI_TERM.
Additional query words: prodsna
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Keywords : kbnetwork kbProgramming
Technology : kbAudDeveloper kbSNAServSearch kbSNAServ200NT kbSNAServ300NT kbSNAServ210NT kbSNAServ211NT
Version : :2.0,2.1,2.11,3.0
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