On Sun, Oct 02, 2016 at 10:12:28AM -0400, Biju N wrote:
> Thanks Dan and Colin, A curl handler (d_curl) is used. Since I the original
> code is restricted, I had to type it myself to be make is more meaningful to
> ask the questions. Sorry about the typos.
>
>
> void* userp;
> res = curl_easy_setopt(d_curl, CURLOPT_SEEKDATA, userp);

This is going to pass in an undefined value as the data. For the rest of the
code to make sense, this has to be equal to a valid FILE*

> if (res != CURLE_OK)
> throw CurlError(res);
> res = curl_easy_setopt(d_curl, CURLOPT_SEEKFUNCTION, seek_callback);
> if (res != CURLE_OK)
> throw CurlError(res);
>
> int seek_callback(void *userp, curl_off_t offset, int origin){
> FILE* in = static_cast<FILE *>(userp);
> long f_offset = (long) offset;
> int ret = fseek(in, f_offset, origin);
> return ret;
> }

>>> Dan
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Received on 2016-10-02