CURLMOPT_MAX_PIPELINE_LENGTH - maximum number of requests in a pipeline
#include <curl/curl.h> CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_PIPELINE_LENGTH, long max);
No function since pipelining was removed in 7.62.0.
Pass a long. The set max number will be used as the maximum amount of outstanding requests in an HTTP/1.1 pipeline. This option is only used for HTTP/1.1 pipelining, not for HTTP/2 multiplexing.
When this limit is reached, libcurl will use another connection to the same host (see CURLMOPT_MAX_HOST_CONNECTIONS), or queue the request until one of the pipelines to the host is ready to accept a request. Thus, the total number of requests in-flight is CURLMOPT_MAX_HOST_CONNECTIONS * CURLMOPT_MAX_PIPELINE_LENGTH.
CURLM *m = curl_multi_init(); /* set a more conservative pipe length */ curl_multi_setopt(m, CURLMOPT_MAX_PIPELINE_LENGTH, 3L);
Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
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