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.TH CURLMOPT_MAX_PIPELINE_LENGTH 3 "September 26, 2023" "ibcurl 8.4.0" 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 of the pipelines to the host is ready to accept a request.  Thus, the
total number of requests in-flight is \fICURLMOPT_MAX_HOST_CONNECTIONS(3)\fP *
\fICURLMOPT_MAX_PIPELINE_LENGTH(3)\fP.
.SH DEFAULT
5
.SH PROTOCOLS
HTTP(S)
.SH EXAMPLE
.nf
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 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_PIPELINING (3),
.BR CURLMOPT_MAX_HOST_CONNECTIONS (3)