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Re: Re: so is it possible to reference(aka include)libcurlintovb.net or what?

From: Alex <WindEagle_at_devilsplayground.net>
Date: Wed, 18 Aug 2004 15:36:11 -0400

----- Original Message -----
From: "Michael Mastroianni" <MMastroianni_at_choicestream.com>
To: "libcurl development" <curl-library_at_cool.haxx.se>
Sent: Wednesday, August 18, 2004 2:54 PM
Subject: RE: Re: so is it possible to reference(aka
include)libcurlintovb.net or what?

> I don't really understand why you don't want to use winInet. It's built
> in, it's easy to use, and you have it for free. Wrapping a c library in
> COM for VB to use is actually a pain to do.
>
> The syntax for downloading something using wininet in c# is something
> like the following: it's got to be pretty similar in vb
>
> bool bTryWithProxy = true ;
> bool bTryingWithProxy = true ;
>
> bool bAllDone = false ;
> Uri uriOut = null;
> UriResult resultUri = null;
> while ( !bAllDone )
> {
> WebResponse result = null ;
> HttpWebRequest req = null ;
>
> try
> {
> req =
> (HttpWebRequest)WebRequest.Create ( uri ) ;
> }
> catch(Exception e)
> {
> Trace.WriteLine ( e.Message ) ;
> throw ;
> }
>
> try
> {
> if(cookies == null)
> cookies = new
> CookieContainer();
> req.CookieContainer = cookies;
> bTryingWithProxy =
> bTryWithProxy ;
> bTryWithProxy = false
> ;
> bAllDone
> = !bTryingWithProxy ; // If not trying with proxy we have nothing else
> to try
>
> //req.MaximumAutomaticRedirections=1;
> req.AllowAutoRedirect=true;
> req.KeepAlive=true;
>
> req.MaximumAutomaticRedirections=5;
> req.Accept = "*/*" ;
> req.Headers["Accept-Language"] =
> "en-us" ;
> req.UserAgent = "Mozilla/4.0
> (compatible; MSIE 6.0; Windows NT 5.1)" ;
> req.Timeout = iTimeoutMS ;
>
> if ( bTryingWithProxy )
> req.Proxy = new WebProxy
> ( "http://localhost:80/",true,new string[] { "www.*.*" } ) ;
> result = req.GetResponse() ;
> uriOut = result.ResponseUri;
> // If we make it here, we've
> passed the Proxy Good/Bad test...
>
> bAllDone = true ;
>
> Stream ReceiveStream =
> result.GetResponseStream() ;
>
> StreamReader sr = new
> StreamReader ( ReceiveStream, System.Text.Encoding.GetEncoding("utf-8")
> ) ;
>
> if ( sr != null )
> {
> string sBody =
> sr.ReadToEnd();
> sBody = sBody.ToLower();
> resultUri = new
> UriResult(uriOut, sBody);
> }
> }
>
> -----Original Message-----
> From: curl-library-bounces_at_cool.haxx.se
> [mailto:curl-library-bounces_at_cool.haxx.se] On Behalf Of Alex
> Sent: Wednesday, August 18, 2004 2:36 PM
> To: libcurl development
> Subject: Re: Re: so is it possible to reference(aka include)
> libcurlintovb.net or what?
>
> ----- Original Message -----
> From: "Casey ODonnell" <caseyodonnell_at_gmail.com>
> To: "libcurl development" <curl-library_at_cool.haxx.se>
> Sent: Wednesday, August 18, 2004 9:57 AM
> Subject: Re: Re: so is it possible to reference(aka include) libcurl
> intovb.net or what?
>
>
> > Two quick comments...
> >
> > 1.) Ask your question to VB.NET without really saying, "I'm using
> > libcurl." Try, "I have this DLL with X and Y exported functions. How
> > do I call them from VB.NET?" You may be in for one heck of a time, as
> > you'll need "C" functions for your callbacks, and on Windows using a
> > DLL, you MUST you call-backs for writing files...
> >
> > 2.) Compiling libcurl though not trivial (I'm guessing) would be a
> > matter of changing the make file ("Makefile.vc6") for VS.NET. It may
> > work as is...who knows. Give it a shot. Once I get back from my
> > confereence abroad, I may look into making a Makefile.vc7...
> >
> > Longer comment...
> >
> > What I would suggest you do is think about a wrapper for libcurl
> > (another DLL) that you or someone else would have to write with C/C++.
> > Have that DLL provide some exported functions (or classes) that VB is
> > actually capable of using well. You're sort of talking about apples
> > and oranges here. libcurl is a C library, it uses C conventions, and
> > expects you to at least be able to conform to those conventions.
> > VB.NET is not only an interpreted language (yes, I know it 'compiles'
> > ...but that is another issue entirely), but a language thatt has no
> > real mechanism for ensuring that your code complies to C conventions.
> > libcurl's whole premise of wrapping the hard stuff and leaving the
> > easy details (reading/writing/setting options) for us just doesn't fit
> > the VB model.
> >
> > Good luck.
> >
> > CKO
> >
> > On Wed, 18 Aug 2004 08:45:19 -0400, Alex
> <windeagle_at_devilsplayground.net>
> wrote:
> > > > I think you should go seek help in a forum that knows lots about
> vb.net.
> > > We
> > > > can help you with all the libcurl details you can ask, but this is
> not
> a
> > > very
> > > > good place to ask vb.net questions.
> > <SNIP>
> > >
> > > true but the fact is that no matter who i ask, they wont know the
> internals
> > > of libcurl like you and they wont be able to answer my questions
> because
> of
> > > it, besides if u cant make it into a dll that i can use, then i
> would
> have
> > > to try to port it to vb.net and i hate that idea because of the lack
> of
> "c"
> > > knowledge I have, but i am going to try to compile it myself using
> visual
> > > studio .net
> >
> >
> > --
> > Casey O'Donnell
> > RPI STS Department - Graduate Student
> >
> > http://homepage.mac.com/codonnell/
> > http://homepage.mac.com/codonnell/wxblogger/
> >
>
> that sux, would anybody be willing to help me with this situation by
> making
> me a simple dll that will work with vb
> please somebody
>

i think thats what i did but not entirelly sure
its possible that i messed up in the thread department but i'll take a
second look at it tonight cuz its laundry day and i gotta get going
btw one more thing: last time i installed vs.net i had msflexgrid but now
that i load my project on my "so called new" pc it doesn't seem to find it,
just incase you had this problem please respond otherwise ignore cuz i know
this mailing list has nothing to do with ms
Received on 2004-08-18