curl/docs/libcurl/opts/CURLINFO_STARTTRANSFER_TIME_T.md
Daniel Stenberg 8442c24c9a
CURLINFO: remove 'get' and 'get the' from each short desc
The short descriptions describe the data each info retrieves. The info
itself does not 'get' the data.

This simplifies and shortens the descriptions and make them more
consistent.

Closes #19406
2025-11-08 17:05:55 +01:00

1.7 KiB

c SPDX-License-Identifier Title Section Source See-also Protocol Added-in
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. curl CURLINFO_STARTTRANSFER_TIME_T 3 libcurl
CURLINFO_STARTTRANSFER_TIME (3)
CURLOPT_TIMEOUT (3)
curl_easy_getinfo (3)
curl_easy_setopt (3)
All
7.61.0

NAME

CURLINFO_STARTTRANSFER_TIME_T - time to first byte received

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_STARTTRANSFER_TIME_T,
                           curl_off_t *timep);

DESCRIPTION

Pass a pointer to a curl_off_t to receive the time, in microseconds, it took from the start until the first byte is received by libcurl. This includes CURLINFO_PRETRANSFER_TIME_T(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.

%PROTOCOLS%

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_off_t start;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
    res = curl_easy_perform(curl);
    if(CURLE_OK == res) {
      res = curl_easy_getinfo(curl, CURLINFO_STARTTRANSFER_TIME_T, &start);
      if(CURLE_OK == res) {
        printf("Time: %" CURL_FORMAT_CURL_OFF_T ".%06ld", start / 1000000,
               (long)(start % 1000000));
      }
    }
    /* always cleanup */
    curl_easy_cleanup(curl);
  }
}

%AVAILABILITY%

RETURN VALUE

curl_easy_getinfo(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).