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CURLINFO_NAMELOOKUP_TIME_T(3) Library Functions Manual CURLINFO_NAMELOOKUP_TIME_T(3)

NAME

CURLINFO_NAMELOOKUP_TIME_T - get the name lookup time in microseconds

SYNOPSIS


#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_NAMELOOKUP_TIME_T,
curl_off_t *timep);

DESCRIPTION

Pass a pointer to a curl_off_t to receive the total time in microseconds from the start until the name resolving was completed.
 
When a redirect is followed, the time from each request is added together.
 
See also the TIMES overview in the curl_easy_getinfo(3) man page.

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE


int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_off_t namelookup;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
res = curl_easy_perform(curl);
if(CURLE_OK == res) {
res = curl_easy_getinfo(curl, CURLINFO_NAMELOOKUP_TIME_T, &namelookup);
if(CURLE_OK == res) {
printf("Time: %" CURL_FORMAT_CURL_OFF_T ".%06ld", namelookup / 1000000,
(long)(namelookup % 1000000));
}
}
/* always cleanup */
curl_easy_cleanup(curl);
}
}

AVAILABILITY

Added in curl 7.61.0

RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

CURLINFO_NAMELOOKUP_TIME(3), curl_easy_getinfo(3), curl_easy_setopt(3)
2025-05-13 libcurl
Copyright 2011-2025 Jonas 'Sortie' Termansen and contributors.
Sortix's source code is free software under the ISC license.
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