CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE man page
CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE — chunk length threshold for pipelining
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE, long size);
Pass a long with a size in bytes. If a pipelined connection is currently processing a chunked (Transfer-encoding: chunked) request with a current chunk length larger than CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3), that pipeline will not be considered for additional requests, even if it is shorter than CURLMOPT_MAX_PIPELINE_LENGTH(3).
The default value is 0, which means that the penalization is inactive.
Added in 7.30.0
Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
CURLMOPT_PIPELINING(3), CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3), CURLMOPT_MAX_PIPELINE_LENGTH(3),
CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3), CURLMOPT_PIPELINING(3), curl_multi_setopt(3).