54 lines
1.4 KiB
Groff
54 lines
1.4 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLINFO_CONTENT_LENGTH_DOWNLOAD.md
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.TH CURLINFO_CONTENT_LENGTH_DOWNLOAD 3 "2024-09-25" libcurl
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.SH NAME
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CURLINFO_CONTENT_LENGTH_DOWNLOAD \- get content\-length of download
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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_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD,
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double *content_length);
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.fi
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.SH DESCRIPTION
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Pass a pointer to a double to receive the content\-length of the download. This
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is the value read from the Content\-Length: field. Since 7.19.4, this returns
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-1 if the size is not known.
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\fICURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)\fP is a newer replacement that returns a more
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sensible variable type.
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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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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Perform the request */
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res = curl_easy_perform(curl);
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if(!res) {
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/* check the size */
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double cl;
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res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &cl);
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if(!res) {
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printf("Size: %.0f\\n", cl);
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}
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}
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}
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}
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.fi
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.SH DEPRECATED
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Deprecated since 7.55.0.
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.SH AVAILABILITY
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Added in curl 7.6.1
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLINFO_CONTENT_LENGTH_UPLOAD (3),
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.BR curl_easy_getinfo (3),
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.BR curl_easy_setopt (3)
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