Hi,

Sorry was a bit hasty replying

not quite a complete bit of code, lets try again...

while (curl_multi_perform(curlHandle, &runningHandles) ==
CURLM_CALL_MULTI_PERFORM)
{
}

You need to loop on this until the query is done. From when I have used
it you need to do this twice, once to send the request and once to
receive the response.

You should also consider doing a select() in between sending and
receiving.

see the below as a good example of this:
http://curl.haxx.se/lxr/source/docs/examples/multi-post.c

Hope this helps

Andy

> On Wed, 2004-05-19 at 15:09, Andy Hobbs wrote:
> > Try this
> >
> > while (curl_multi_perform(curlHandle, &runningHandles) ==
> > CURLM_CALL_MULTI_PERFORM)
> >
> >
> > Andy
> >
> >
> > On Wed, 2004-05-19 at 14:59, Stefan Libcurl wrote:
> > > Hi !
> > >
> > > I'am a newbie in libcurl and tried to use the multi interface of libcurl.
> > >
> > > I want to pull several files from a server without blocking my application.
> > > It's an ActiveX control embeded in html for running in IE. I know there are
> > > also a win32 API, but it blocks !!
> > >
> > > I followed the docs how to declare a writeDataCallback function.
> > >
> > > Great, when I use an libcurl easy handle my callback function is called.
> > > Using a multi handler the callback funtion is never called.
> > >
> > > If I set an breakpoint into callback funtion the debugger is not stopped.
> > > Maybe it's a problem of multi-threadig ?
> > >
> > > Here a snipped code:
> > >
> > > {
> > > ...
> > > DataInfo* data1 = new DataInfo();
> > >
> > > curlHandle = curl_multi_init();
> > >
> > > CURL* curl1 = curl_easy_init();
> > >
> > > // set options
> > > curl_easy_setopt(curl1, CURLOPT_URL, "http://myserver/dach_all.vsp");
> > >
> > > curl_easy_setopt(curl1, CURLOPT_WRITEFUNCTION, ::writeDataCallback);
> > >
> > > curl_easy_setopt(curl1, CURLOPT_WRITEDATA, (void *)data1);
> > >
> > > curl_easy_setopt(curl1, CURLOPT_PROXYAUTH, CURLAUTH_BASIC | CURLAUTH_NTLM
> > > );
> > >
> > > // add easy handles to multi handle
> > > curl_multi_add_handle(curlHandle, curl1);
> > >
> > > // perform
> > > code = curl_multi_perform(curlHandle, &runningHandles);
> > > }
> > >
> > > and here the callback:
> > >
> > > size_t writeDataCallback(void *buffer, size_t size, size_t nmemb, void
> > > *userp)
> > > {
> > > int realsize = size * nmemb;
> > >
> > > DataInfo* info = (DataInfo*)userp;
> > >
> > > info->memory = (char *)realloc(info->memory, info->size + realsize + 1);
> > >
> > > if (info->memory)
> > > {
> > > memcpy(&(info->memory[info->size]), buffer, realsize);
> > > info->size += realsize;
> > > info->memory[info->size] = 0;
> > > }
> > >
> > > return realsize;
> > > }
> > >
> > >
> > > With an easy handle it works. Have anybody an idea ?
> > >
> > > Thanks
> > >
> > > -steve'o
> > >
> > > _________________________________________________________________
> > > Schluß mit Spam! http://www.msn.de/antispam/prevention/junkmailfilter Wir
> > > helfen Ihnen, unerwünschte E-Mails zu reduzieren.

-- 
andy_at_trogs.org.uk
I'd like to meet the guy who invented beer and see what he's working on
now