CURLMOPT_MAX_CONCURRENT_STREAMS explained

Name

CURLMOPT_MAX_CONCURRENT_STREAMS - max concurrent streams for http2

Synopsis

#include <curl/curl.h>
 
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_CONCURRENT_STREAMS,
                            long max);

Description

Pass a long indicating the max. The set number is used as the maximum number of concurrent streams libcurl should support on connections done using HTTP/2 or HTTP/3.

Valid values range from 1 to 2147483647 (2^31 - 1) and defaults to 100. The value passed here would be honored based on other system resources properties.

Default

100

Protocols

This functionality affects http only

Example

int main(void)
{
  CURLM *m = curl_multi_init();
  /* max concurrent streams 200 */
  curl_multi_setopt(m, CURLMOPT_MAX_CONCURRENT_STREAMS, 200L);
}

Availability

Added in curl 7.67.0

Return value

curl_multi_setopt returns a CURLMcode indicating success or error.

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