48 lines
1.3 KiB
Groff
48 lines
1.3 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_STDERR.md
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.TH CURLOPT_STDERR 3 "2025-07-07" libcurl
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.SH NAME
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CURLOPT_STDERR \- redirect stderr to another stream
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STDERR, FILE *stream);
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.fi
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.SH DESCRIPTION
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Pass a FILE * as parameter. Tell libcurl to use this \fIstream\fP instead of
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stderr when showing the progress meter and displaying \fICURLOPT_VERBOSE(3)\fP
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data.
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If you are using libcurl as a Windows DLL, this option causes an exception and
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a crash in the library since it cannot access a FILE * passed on from the
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application. A work\-around is to instead use \fICURLOPT_DEBUGFUNCTION(3)\fP.
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.SH DEFAULT
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stderr
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.SH PROTOCOLS
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This functionality affects all supported protocols
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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FILE *filep = fopen("dump", "wb");
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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curl_easy_setopt(curl, CURLOPT_STDERR, filep);
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in curl 7.1
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.SH RETURN VALUE
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\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
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\fIlibcurl\-errors(3)\fP.
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.SH SEE ALSO
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.BR CURLOPT_DEBUGFUNCTION (3),
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.BR CURLOPT_NOPROGRESS (3),
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.BR CURLOPT_VERBOSE (3)
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