Manpages - CURLINFO_NAMELOOKUP_TIME.3

CURLINFO_NAMELOOKUP_TIME - get the name lookup time

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_NAMELOOKUP_TIME, double *timep);

Pass a pointer to a double to receive the total time in seconds 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.

All

  curl = curl_easy_init();
  if(curl) {
    double namelookup;
    curl_easy_setopt(curl, CURLOPT_URL, url);
    res = curl_easy_perform(curl);
    if(CURLE_OK == res) {
      res = curl_easy_getinfo(curl, CURLINFO_NAMELOOKUP_TIME, &namelookup);
      if(CURLE_OK == res) {
        printf("Time: %.1f", namelookup);
      }
    }
    /* always cleanup */
    curl_easy_cleanup(curl);
  }

Added in 7.4.1

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

*curl_easy_getinfo*(3), *curl_easy_setopt*(3), *CURLINFO_NAMELOOKUP_TIME_T*(3)