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From: resnick@lees.cogsci.uiuc.edu (Pete Resnick)
Newsgroups: comp.sys.mac.comm
Subject: Re: TCPRcv call in MacTCP
Message-ID: <1990Jul14.211959.14776@ux1.cso.uiuc.edu>
Date: 14 Jul 90 21:19:59 GMT
References: <1990Jul14.024933.11241@midway.uchicago.edu>
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Organization: University of Illinois at Urbana
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rfl@oddjob.uchicago.edu (Bob Loewenstein) writes:
>I have a question I hope someone can answer concerning an asynchronous TCPRcv
>call in MacTCP. I have a connection and start a TCPRcv with a Command Timeout of
>0 (infinite).  How do I abort this call in progress? The only way I can see is
>for the sending machine to close the connection.

>When the user quits the program, I would like to close the connection, but
>can't since the command is still in progress.

>I temporarily have my code working where the timeout is much shorter, say
>a few seconds, and a watchdog reconnects when the call completes. If
>I want to close the connection, my abort call waits until the call
>completes on the short timeout and all works ok. However, there must
>be a way to abort on an infinite timeout.

I just go the low-down on this from DTS a week ago, though I was aborting
a TCPPassiveOpen. You must create a second TCPiopb, pass it the ioCRefNum
of the MacTCP driver (as always), a csCode of TCPAbort, and the stream
pointer of the stream you want to kill. Call PBControl with asynch set to
false. The PBControl call for the abort should complete with a return
code of 0 and the ioResult of the stream you aborted will be -23012
(connectionTerminated). Your ioCompletion routine (if you have one)
will be called.

Good luck.

pr
--
Pete Resnick             (...so what is a mojo, and why would one be rising?)
Graduate assistant - Philosophy Department, Gregory Hall, UIUC
System manager - Cognitive Science Group, Beckman Institute, UIUC
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