Specifically, I replaced the READFUNCTION and READDATA with
WRITEFUNCTION and WRITEDATA respectively. At first I changed the
callback function to this:
static size_t read_callback(void *ptr, size_t size, size_t nmemb,
void *stream)
{
curl_off_t nread;
char *r = (char*)ptr;
size_t retcode = fwrite(r, size, nmemb, (FILE*)stream);
nread = (curl_off_t)retcode;
return retcode;
}
When I ran that, it would get the curl_easy_perform call, then the
program would freeze and crash. When I tried replacing the contents of
the callback function with this test:
fprint("%s.*", size, (char*)stream);
return 0;
It gave me the error code 23 I mentioned before.
On 3/3/2015 11:46 AM, Josh Angstadt wrote:
Hi, I tried to use the write options as well, but when I used those I
got an error from the connection, speciifcally error code 23
On 3/3/2015 11:40 AM, Patrick Monnerat wrote:
Josh Angstadt wrote:
curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
curl_easy_setopt(curl, CURLOPT_READDATA, result);
Your program is supposed to DOWNLOAD, isn't it ?
The http://curl.haxx.se/libcurl/c/CURLOPT_READFUNCTION.html specifies:
CURLOPT_READFUNCTION - read callback for data UPLOADS.
You probably need to use
http://curl.haxx.se/libcurl/c/CURLOPT_WRITEFUNCTION.html instead.
If you just want to write received data to a file, use CURLOPT_WRITEDATA
with the preopened FILE * (CURLOPT_WRITEFUNCTION is set to fwrite by
default).
If you want to process data before writing it somewhere, please see
example http://curl.haxx.se/libcurl/c/getinmemory.html
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