c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. SPDX-License-Identifier: curl Title: CURLINFO_CONTENT_LENGTH_DOWNLOAD_T Section: 3 Source: libcurl See-also:
CURLINFO_CONTENT_LENGTH_DOWNLOAD_T - get content-length of download
#include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, curl_off_t *content_length);
Pass a pointer to a curl_off_t to receive the content-length of the download. This is the value read from the Content-Length: field. Stores -1 if the size is not known.
HTTP(S)
int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode res; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); /* Perform the request */ res = curl_easy_perform(curl); if(!res) { /* check the size */ curl_off_t cl; res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, &cl); if(!res) { printf("Download size: %" CURL_FORMAT_CURL_OFF_T "\n", cl); } } } }
Added in 7.55.0
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.