CURLINFO_NAMELOOKUP_TIME_T.md (1590B)
1 --- 2 c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3 SPDX-License-Identifier: curl 4 Title: CURLINFO_NAMELOOKUP_TIME_T 5 Section: 3 6 Source: libcurl 7 See-also: 8 - CURLINFO_NAMELOOKUP_TIME (3) 9 - curl_easy_getinfo (3) 10 - curl_easy_setopt (3) 11 Protocol: 12 - All 13 Added-in: 7.61.0 14 --- 15 16 # NAME 17 18 CURLINFO_NAMELOOKUP_TIME_T - get the name lookup time in microseconds 19 20 # SYNOPSIS 21 22 ~~~c 23 #include <curl/curl.h> 24 25 CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_NAMELOOKUP_TIME_T, 26 curl_off_t *timep); 27 ~~~ 28 29 # DESCRIPTION 30 31 Pass a pointer to a curl_off_t to receive the total time in microseconds 32 from the start until the name resolving was completed. 33 34 When a redirect is followed, the time from each request is added together. 35 36 See also the TIMES overview in the curl_easy_getinfo(3) man page. 37 38 # %PROTOCOLS% 39 40 # EXAMPLE 41 42 ~~~c 43 int main(void) 44 { 45 CURL *curl = curl_easy_init(); 46 if(curl) { 47 CURLcode res; 48 curl_off_t namelookup; 49 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 50 res = curl_easy_perform(curl); 51 if(CURLE_OK == res) { 52 res = curl_easy_getinfo(curl, CURLINFO_NAMELOOKUP_TIME_T, &namelookup); 53 if(CURLE_OK == res) { 54 printf("Time: %" CURL_FORMAT_CURL_OFF_T ".%06ld", namelookup / 1000000, 55 (long)(namelookup % 1000000)); 56 } 57 } 58 /* always cleanup */ 59 curl_easy_cleanup(curl); 60 } 61 } 62 ~~~ 63 64 # %AVAILABILITY% 65 66 # RETURN VALUE 67 68 curl_easy_getinfo(3) returns a CURLcode indicating success or error. 69 70 CURLE_OK (0) means everything was OK, non-zero means an error occurred, see 71 libcurl-errors(3).