CURLOPT_MAX_SEND_SPEED_LARGE(3) Library Functions Manual
NAME
CURLOPT_MAX_SEND_SPEED_LARGE - rate limit data upload speed
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAX_SEND_SPEED_LARGE,
curl_off_t maxspeed);
DESCRIPTION
Pass a curl_off_t as parameter with the maxspeed. If an upload exceeds
this speed (counted in bytes per second) the transfer pauses to keep
the average speed less than or equal to the parameter value. Defaults
to unlimited speed.
This is not an exact science. libcurl attempts to keep the average
speed below the given threshold over a period time.
If you set maxspeed to a value lower than CURLOPT_UPLOAD_BUFFERSIZE(3),
libcurl might "shoot over" the limit on its first send and still send
off a full buffer.
This option does not affect transfer speeds done with FILE:// URLs.
DEFAULT
0, disabled
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode ret;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* cap the upload speed to 1000 bytes/sec */
curl_easy_setopt(curl, CURLOPT_MAX_SEND_SPEED_LARGE, (curl_off_t)1000);
/* (set some upload options as well) */
ret = curl_easy_perform(curl);
}
}
AVAILABILITY
Added in curl 7.15.5
RETURN VALUE
curl_easy_setopt(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).
SEE ALSO
CURLOPT_LOW_SPEED_LIMIT(3), CURLOPT_MAX_RECV_SPEED_LARGE(3)
libcurl 2025-02-08 CURLOPT_MAX_SEND_SPEED_LARGE(3)
curl 8.12.0 - Generated Sat Feb 15 16:10:04 CST 2025