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.TH CURLMOPT_MAX_PIPELINE_LENGTH 3 "November 04, 2020" "libcurl 7.77.0" "curl_multi_setopt options"
.SH NAME
CURLMOPT_MAX_PIPELINE_LENGTH \- maximum number of requests in a pipeline
.SH SYNOPSIS
#include <curl/curl.h>
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_PIPELINE_LENGTH, long max);
.SH DESCRIPTION
No function since pipelining was removed in 7.62.0.
Pass a long. The set \fBmax\fP number will be used as the maximum amount of
outstanding requests in an HTTP/1.1 pipelined connection. 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 \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), " CURLMOPT_MAX_HOST_CONNECTIONS "(3), "
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