CURLOPT_PIPEWAIT(3)					     curl_easy_setopt options					       CURLOPT_PIPEWAIT(3)

NAME

       CURLOPT_PIPEWAIT - wait for pipelining/multiplexing

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PIPEWAIT, long wait);

DESCRIPTION

       Set  wait to 1L to tell libcurl to prefer to wait for a connection to confirm or deny that it can do pipelining or multiplexing before con-
       tinuing.

       When about to perform a new transfer that allows pipelining or multiplexing, libcurl will check for  existing  connections  to  re-use  and
       pipeline on. If no such connection exists it will immediately continue and create a fresh new connection to use.

       By  setting  this  option  to 1 - and having CURLMOPT_PIPELINING(3) enabled for the multi handle this transfer is associated with - libcurl
       will instead wait for the connection to reveal if it is possible to pipeline/multiplex on before it continues. This enables libcurl to much
       better keep the number of connections to a minimum when using pipelining or multiplexing protocols.

       The effect thus becomes that with this option set, libcurl prefers to wait and re-use an existing connection for pipelining rather than the
       opposite: prefer to open a new connection rather than waiting.

       The waiting time is as long as it takes for the connection to get up and for libcurl to get the necessary response  back  that  informs	it
       about its protocol and support level.

DEFAULT

       0 (off)

PROTOCOLS

       HTTP(S)

EXAMPLE

AVAILABILITY

       Added in 7.43.0

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_FORBID_REUSE(3), CURLOPT_FRESH_CONNECT(3), CURLMOPT_PIPELINING(3), CURLMOPT_MAX_HOST_CONNECTIONS(3),

libcurl 7.54.0							   May 01, 2016 					       CURLOPT_PIPEWAIT(3)