.\" generated by cd2nroff 0.1 from CURLMOPT_PIPELINING_SITE_BL.md
.TH CURLMOPT_PIPELINING_SITE_BL 3 "2026-09-02" libcurl
.SH NAME
CURLMOPT_PIPELINING_SITE_BL \- pipelining host block list
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PIPELINING_SITE_BL,
                            char **hosts);
.fi
.SH DESCRIPTION
No function since pipelining was removed in 7.62.0.

Pass a \fBhosts\fP array of char *, ending with a NULL entry. This is a list
of sites that are blocked from pipelining, i.e sites that are known to not
support HTTP pipelining. The array is copied by libcurl.

Pass a NULL pointer to clear the block list.
.SH DEFAULT
NULL, which means that there is no block list.
.SH PROTOCOLS
This functionality affects http only
.SH EXAMPLE
.nf
static const char *site_block_list[] =
{
  "www.haxx.se",
  "www.example.com:1234",
  NULL
};

int main(void)
{
  CURLM *m = curl_multi_init();
  curl_multi_setopt(m, CURLMOPT_PIPELINING_SITE_BL, site_block_list);
}
.fi
.SH AVAILABILITY
Added in curl 7.30.0
.SH RETURN VALUE
\fIcurl_multi_setopt(3)\fP returns a CURLMcode indicating success or error.

CURLM_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLMOPT_PIPELINING (3),
.BR CURLMOPT_PIPELINING_SERVER_BL (3)