NAME

       CURLMOPT_PIPELINING - enable/disable HTTP pipelining

SYNOPSIS

       #include <curl/curl.h>

       CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PIPELINING, long bits);

DESCRIPTION

       Set  the  bits  parameter  to 1 to make libcurl use HTTP pipelining for HTTP/1.1 transfers
       done using this multi handle, as far as possible. This means that  if  you  add  a  second
       request that can use an already existing connection, the second request will be "piped" on
       the same connection rather than being executed in parallel.

       When using pipelining, there are also several other related options that  are  interesting
       to  tweak and adjust to alter how libcurl spreads out requests on different connections or
       not etc.

       Starting in 7.43.0, the bits parameter's bit 1 also has  a  meaning  and  libcurl  is  now
       offering symbol names for the bits:

       CURLPIPE_NOTHING
       Default, which means doing no attempts at pipelining or multiplexing.

       CURLPIPE_HTTP1
        If  this  bit  is set, libcurl will try to pipeline HTTP/1.1 requests on connections that
        are already established and in use to hosts.

       CURLPIPE_MULTIPLEX
         If this bit is set, libcurl will try to multiplex the  new  transfer  over  an  existing
         connection if possible. This requires HTTP/2.

DEFAULT

       0 (off)

PROTOCOLS

       HTTP(S)

EXAMPLE

       TODO

AVAILABILITY

       Added in 7.16.0. Multiplex support bit added in 7.43.0.

RETURN VALUE

       Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.

SEE ALSO

       CURLMOPT_MAX_PIPELINE_LENGTH(3),                           CURLMOPT_PIPELINING_SITE_BL(3),
       CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3),            CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3),
       CURLMOPT_MAX_HOST_CONNECTIONS(3),                                 CURLMOPT_MAXCONNECTS(3),
       CURLMOPT_MAX_HOST_CONNECTIONS(3),