.\" generated by cd2nroff 0.1 from CURLINFO_STARTTRANSFER_TIME.md
.TH CURLINFO_STARTTRANSFER_TIME 3 "2026-06-24" libcurl
.SH NAME
CURLINFO_STARTTRANSFER_TIME \- time to first byte received
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_STARTTRANSFER_TIME,
                           double *timep);
.fi
.SH 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
\fICURLINFO_PRETRANSFER_TIME(3)\fP 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 \fIcurl_easy_getinfo(3)\fP man page.
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    double start;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
    result = curl_easy_perform(curl);
    if(result == CURLE_OK) {
      result = curl_easy_getinfo(curl, CURLINFO_STARTTRANSFER_TIME, &start);
      if(result == CURLE_OK) {
        printf("Time: %.1f", start);
      }
    }
    /* always cleanup */
    curl_easy_cleanup(curl);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.9.2
.SH RETURN VALUE
\fIcurl_easy_getinfo(3)\fP returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLINFO_STARTTRANSFER_TIME_T (3),
.BR CURLOPT_TIMEOUT (3),
.BR curl_easy_getinfo (3),
.BR curl_easy_setopt (3)