Article View: comp.sys.mac
Article #21650AppleTalk programming question
From: Michael Peirce
Date: Sat, 14 Nov 1987 23:32
Date: Sat, 14 Nov 1987 23:32
78 lines
2477 bytes
2477 bytes
'
I've been messing around with AppleTalk, or rather, trying to.
I can get things to work: once. The first time I run the program
things are fine and act as they should, but the second time BOMB!
If anyone can suggest something, I'd really appreciate it. Below is
a simple program that exhibits this behavior...
-- michael
-------------------------------------------------------------------------------
#include "stdio.h"
#include "Appletalk.h"
/*
* LightSpeed C project contains the following libraries:
* AppleTalk.lib
* MacTraps
* stdio
* test.at.c
*
* You also need a resource file containing the 'atpl' resource found in
* the file :LightSpeed C:Mac Libraries:Resource Files:ATalk/ABPackage
* (this seems to contain the glue from Think for AppleTalk.
*
*
* Run it once and it seems to work just fine,
* but run it a second time and KAPLOWEE!!!
*
*/
RetransType retrans = { 2, 2 };
EntityName who = { "\p=", "\p=", "\p*"};
ABRecHandle myABRec;
OSErr stat;
char buff[255];
main ()
{
/*
* Check to see if the drivers are open.
*/
printf("IsMMPOpen %d\n",IsMPPOpen());
printf("IsATPOpen %d\n",IsATPOpen());
/*
* Open up the AppleTalk drivers (if already open, that's OK)
*/
stat = MPPOpen();
printf("stat from MPPOpen was %d\n",stat);
/*
* Ask the Name Binding Protocal who's out there...
*/
myABRec = (ABRecHandle)NewHandle(nbpSize);
(**myABRec).nbpProto.nbpEntityPtr = &who;
(**myABRec).nbpProto.nbpBufPtr = buff;
(**myABRec).nbpProto.nbpBufSize = 255;
(**myABRec).nbpProto.nbpDataField = 10;
(**myABRec).nbpProto.nbpRetransmitInfo = retrans;
stat = NBPLookup(myABRec,/* ASYNC => */FALSE);
printf("stat from NBPLookUp was %d count = %d\n",stat,(**myABRec).nbpProto.nb
pDataField);
stat = MPPClose();
printf("stat from MPPClose was %d\n",stat);
}
Technical Details
Message-ID:
<1292@lll-lcc.aRpA>Path:
arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!lll-crg.llnl.gov!peirceShow Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!lll-crg.llnl.gov!peirce From: peirce@lll-crg.llnl.gov (Michael Peirce) Newsgroups: comp.sys.mac Subject: AppleTalk programming question Message-ID: <1292@lll-lcc.aRpA> Date: Sat, 14-Nov-87 18:32:16 EST Article-I.D.: lll-lcc.1292 Posted: Sat Nov 14 18:32:16 1987 Date-Received: Sun, 15-Nov-87 20:18:47 EST Sender: usenet@lll-lcc.aRpA Reply-To: peirce@lll-crg.llnl.gov.UUCP (Michael Peirce) Lines: 77