---

c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. SPDX-License-Identifier: curl Title: CURLINFO_SPEED_DOWNLOAD Section: 3 Source: libcurl See-also:

• CURLINFO_SIZE_UPLOAD_T (3)
• CURLINFO_SPEED_UPLOAD (3)
• curl_easy_getinfo (3)
• curl_easy_setopt (3)

---

NAME

CURLINFO_SPEED_DOWNLOAD - get download speed

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_SPEED_DOWNLOAD,
                           double *speed);

DESCRIPTION

Pass a pointer to a double to receive the average download speed that curl measured for the complete download. Measured in bytes/second.

CURLINFO_SPEED_DOWNLOAD_T(3) is a newer replacement that returns a more sensible variable type.

PROTOCOLS

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

    /* Perform the request */
    res = curl_easy_perform(curl);

    if(!res) {
      double speed;
      res = curl_easy_getinfo(curl, CURLINFO_SPEED_DOWNLOAD, &speed);
      if(!res) {
        printf("Download speed %.0f bytes/sec\n", speed);
      }
    }
  }
}

AVAILABILITY

Added in 7.4.1. Deprecated since 7.55.0.

RETURN VALUE

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