- From: Thijs Ott de Vries <Thijs.Ott.de.Vries@nlnwgfsc.origin.nl>
- Date: Sat, 18 Nov 1995 16:42:47 +0100
- To: www-lib@w3.org
I am using a little application that I found somewhere in these mail
groups to make a WWW client on Windows NT (3.50), using libwww (DLL's).
I got it working on a Sun and a SGI before, but on NT it crashes
(strangely enough after it has successfully read the data via TCP sockets,
in writing these data to a file, as I found when debugging).
I tried to make sure that I do not have a user-access problem (running
as administrator gives same problems and the file can surely be written).
So, my questions:
1. Should this combination (not) work ?:
- Libwww, version 4.0 Alpha 6
- Visual C++ 2.0 compiler (MicroSoft)
- Windows NT 3.50.
2. Which combination (including NT) do you have working ?
2a. Could you provide a little sample program with it ?
Hereunder I include the test program, adapted from a program that
Gunnar R?nning (thanks, Gunnar!) once put here.
Any hints are welcome.
Thijs Ott de Vries
/*
Original application by Gunnar R?nning - found as message 4094
somewhere in these mailing groups.
Works and compiles on Sun an SGI, but I get crashes on NT 3.50.
In the debugger I can see that the last libWWW call - HTLoadAbsolute() -
reads the data via the TCP port correctly, but then crashes in
trying to fwrite() the data to file (in HTFWriter_write(), HTFWrite.c).
I have used the following:
- LibWWW Version 4, Alpha release 6. DLL's made according to
"Building Windows DLLs" spec (WWW_WIN_DLL, _WINDOWS, WWW_WIN_ASYNC).
I tried both with and without the _CONSOLE #define, same effect.
- Visual C++ 2.0 compiler
- Windows NT 3.50
*/
#define _WINDOWS
#include <stdio.h>
#include "WWWLib.h"
#include "HTHome.h"
#include "HTTP.h"
main()
{
char *url = "http://172.16.38.162/"; /* EMWAC server on my NT machine,
other URL's tried as well */
FILE *fp;
PRIVATE HTRequest * request;
PRIVATE HTList * c = NULL;
c = HTList_new();
HTLibInit("todv", "0.1");
HTProtocol_add("http", YES, HTLoadHTTP);
HTNetCall_addBefore(HTLoadStart, 0);
HTNetCall_addAfter(HTLoadTerminate, HT_ALL);
if( (fp = fopen("foo.txt", "w")) == NULL){
return 0;
}
fprintf(fp, "Test to write to foo.txt\n");
fflush(fp);
/* This text actually appears in the file, so no write-access problems it
seems */
request = HTRequest_new();
HTRequest_setMethod(request, METHOD_GET);
HTRequest_setOutputStream(request,HTFWriter_new(fp, NO));
HTRequest_setOutputFormat(request, WWW_SOURCE);
HTRequest_setPreemtive (request, 1);
printf("Loading URL %s\n", url);
HTLoadAbsolute(url, request); /* crashes in writing to file */
fclose(fp);
}
Received on Thursday, 18 January 1996 10:46:16 UTC