Manpages - CURLINFO_STARTTRANSFER_TIME.3

CURLINFO_STARTTRANSFER_TIME - get the time until the first byte is received

#include <curl/curl.h>

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

Pass a pointer to a double to receive the time, in seconds, it took from the start until the first byte is received by libcurl. This includes CURLINFO_PRETRANSFER_TIME(3) and also the time the server needs to calculate the result.

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

Added in 7.9.2

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

*curl_easy_getinfo*(3), *curl_easy_setopt*(3), *CURLINFO_STARTTRANSFER_TIME_T*(3)