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From: mattiasb@dront.nada.kth.se (Mattias Berglund)
Newsgroups: comp.sys.mac.programmer
Subject: Re: SUMMARY: Trying to use MacTCP with THINK LSC 3.02 - no solution yet.
Keywords: mactcp think C
Message-ID: <1991Jan9.140919.2757@nada.kth.se>
Date: 9 Jan 91 14:09:19 GMT
References: <1991Jan09.042652.28018@comp.vuw.ac.nz>
Organization: Royal Institute of Technology, Stockholm, Sweden
Lines: 52

I have written an application which makes use of MacTCP, and never had
the problems you described. (Other problems, yes, but not these :-)).

A few suggestions:

* Don't use strcpy to copy pascalstrings as they are not null-terminated.
If you must use PBOpen, try "paramBlock.ioNamePtr = (StringPtr) "\p.TCP";"

* Do use OpenDriver, I use the following in my code:

#define	TCPDRIVER	"\p.IPP"
static short gRefNum;

OSErr OpenMacTCP(void)
{
	OSErr err;
	
	
	err = OpenDriver(TCPDRIVER, &gRefNum);
	return(err);
}


I hope this helps you. If you get by this problem I can give a few hints
about upcoming problems, the ones I stumbled on - more specifically in the DNR
package:

* The routine OpenOurRF has a bug: if the application sits on a volume
different from the boot volume, the OpenResource-call will fail with
a resNotFound. Bracket that call, or even the while loop, with GetVol/SetVol;
or maybe use OpenRFPerm.

* In the include file "AddressXlation.h" the struct hostInfo misses a
vital field:

typedef struct hostInfo {
	int	rtnCode;
	char cname[255];
	
	short	numAddrs;	/*** Ooops, someone missed this one... ***/
	unsigned long addr[NUM_ALT_ADDRS];
};


I don't know if these errors are found i the Pascal interfaces also.


Mattias Berglund
JOB Systemintegration AB
P.O. BOX 34072
S-100 26 STOCKHOLM
SWEDEN