CURLINFO_STARTTRANSFER_TIME explained

Name

CURLINFO_STARTTRANSFER_TIME - get the time until the first byte is received

Synopsis

#include <curl/curl.h>
 
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_STARTTRANSFER_TIME,
                           double *timep);

Description

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 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 man page.

Protocols

All

Example

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);
}

Availability

Added in 7.9.2

Return value

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