.\" generated by cd2nroff 0.1 from CURLOPT_STDERR.md
.TH CURLOPT_STDERR 3 "2024-09-18" libcurl
.SH NAME
CURLOPT_STDERR \- redirect stderr to another stream
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STDERR, FILE *stream);
.fi
.SH DESCRIPTION
Pass a FILE * as parameter. Tell libcurl to use this \fIstream\fP instead of
stderr when showing the progress meter and displaying \fICURLOPT_VERBOSE(3)\fP
data.

If you are using libcurl as a Windows DLL, this option causes an exception and
a crash in the library since it cannot access a FILE * passed on from the
application. A work\-around is to instead use \fICURLOPT_DEBUGFUNCTION(3)\fP.
.SH DEFAULT
stderr
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
  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);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.1
.SH RETURN VALUE
Returns CURLE_OK
.SH SEE ALSO
.BR CURLOPT_DEBUGFUNCTION (3),
.BR CURLOPT_NOPROGRESS (3),
.BR CURLOPT_VERBOSE (3)