.\" generated by cd2nroff 0.1 from CURLMOPT_MAX_PIPELINE_LENGTH.md
.TH CURLMOPT_MAX_PIPELINE_LENGTH 3 "2024-11-18" libcurl
.SH NAME
CURLMOPT_MAX_PIPELINE_LENGTH \- maximum number of requests in a pipeline
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_PIPELINE_LENGTH,
                            long max);
.fi
.SH DESCRIPTION
No function since pipelining was removed in 7.62.0.

Pass a long. The set \fBmax\fP number is 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 creates another connection to the same
host (see \fICURLMOPT_MAX_HOST_CONNECTIONS(3)\fP), or queue the request until one
.nf
of the pipelines to the host is ready to accept a request. Thus, the total
.fi
\fICURLMOPT_MAX_PIPELINE_LENGTH(3)\fP.
.SH DEFAULT
5
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
  CURLM *m = curl_multi_init();
  /* set a more conservative pipe length */
  curl_multi_setopt(m, CURLMOPT_MAX_PIPELINE_LENGTH, 3L);
}
.fi
.SH AVAILABILITY
Added in curl 7.30.0
.SH RETURN VALUE
Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
.SH SEE ALSO
.BR CURLMOPT_MAX_HOST_CONNECTIONS (3),
.BR CURLMOPT_PIPELINING (3)