CURLINFO_CONTENT_LENGTH_DOWNLOAD_T explained
Name
CURLINFO_CONTENT_LENGTH_DOWNLOAD_T - get content-length of download
Synopsis
#include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, curl_off_t *content_length);
Description
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.
Protocols
This functionality affects http only
Example
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); } } } }
Availability
Added in curl 7.55.0
Return value
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
See also
CURLINFO_CONTENT_LENGTH_UPLOAD_T(3), curl_easy_getinfo(3), curl_easy_setopt(3)
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