Re: http_open in swi-prolog

From: Carlo Capelli (capelli_at_rdbos.it)
Date: 10/06/04 

Date: Wed, 6 Oct 2004 09:41:04 +0200

"Jan Wielemaker" <jan@ct.xs4all.nl> ha scritto nel messaggio
news:slrncm5dkf.n2v.jan@ct.xs4all.nl...
> In article <5Yx8d.18172$eb.14090@tornado.fastwebnet.it>, Carlo Capelli
wrote:
> > I'm currently running version 5.4.2, althoug the sample code come from
> > previous download/setup (I think that was 5.2.13, the download file is
> > w32pl5213.exe).
> > My system is Windows 2000, version 5.00.2195, service pack 3, and I
don't
> > experiment any anomaly browsing the Web.
> > Maybe I must delete eventually precompiled library code? I think the
setup
> > program already does...
> > I think I should debug lower level, near to socket, if possible...
> > Many thanks again, by Carlo
>
> At the real low level you can use the undocumented ?- tcp_debug(+Level).
> call (0<=Level<=9). You need the sourcecode next to it to see what it
> all means :-)
>
> More likely, could there be a proxy in between? Some other security
> filter closing the connection because it doesn't like this program
> making connections, or doesn't like the user agent identifier Prolog
> uses?
>
> Success --- Jan

Yes, I tried from home, where I run a Windows XP Home laptop with dialup
connection, and all was OK.
At workplace effettively there is a proxy. Passing that option to http_open
make all work fine.

Many tanks again and congratulation for your outstanding work.

Bye Carlo.

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