1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_STARTTRANSFER_TIME_T 5Section: 3 6Source: libcurl 7See-also: 8 - CURLINFO_STARTTRANSFER_TIME (3) 9 - CURLOPT_TIMEOUT (3) 10 - curl_easy_getinfo (3) 11 - curl_easy_setopt (3) 12Protocol: 13 - All 14--- 15 16# NAME 17 18CURLINFO_STARTTRANSFER_TIME_T - get the time until the first byte is received 19 20# SYNOPSIS 21 22~~~c 23#include <curl/curl.h> 24 25CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_STARTTRANSFER_TIME_T, 26 curl_off_t *timep); 27~~~ 28 29# DESCRIPTION 30 31Pass a pointer to a curl_off_t to receive the time, in microseconds, 32it took from the 33start until the first byte is received by libcurl. This includes 34CURLINFO_PRETRANSFER_TIME_T(3) and also the time the server needs to 35calculate the result. 36 37When a redirect is followed, the time from each request is added together. 38 39See also the TIMES overview in the curl_easy_getinfo(3) man page. 40 41# EXAMPLE 42 43~~~c 44int main(void) 45{ 46 CURL *curl = curl_easy_init(); 47 if(curl) { 48 CURLcode res; 49 curl_off_t start; 50 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 51 res = curl_easy_perform(curl); 52 if(CURLE_OK == res) { 53 res = curl_easy_getinfo(curl, CURLINFO_STARTTRANSFER_TIME_T, &start); 54 if(CURLE_OK == res) { 55 printf("Time: %" CURL_FORMAT_CURL_OFF_T ".%06ld", start / 1000000, 56 (long)(start % 1000000)); 57 } 58 } 59 /* always cleanup */ 60 curl_easy_cleanup(curl); 61 } 62} 63~~~ 64 65# AVAILABILITY 66 67Added in 7.61.0 68 69# RETURN VALUE 70 71Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 72