Manpages - CURLOPT_STDERR.3

CURLOPT_STDERR - redirect stderr to another stream

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STDERR, FILE *stream);

Pass a FILE * as parameter. Tell libcurl to use this stream instead of stderr when showing the progress meter and displaying CURLOPT_VERBOSE(3) data.

stderr

All

  CURL *curl = curl_easy_init();
  FILE *filep = fopen("dump", "wb");
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
    curl_easy_setopt(curl, CURLOPT_STDERR, filep);

    curl_easy_perform(curl);
  }

Always

Returns CURLE_OK

*CURLOPT_VERBOSE*(3), *CURLOPT_NOPROGRESS*(3),