NAME

       CURLMOPT_MAX_PIPELINE_LENGTH - maximum number of requests in a pipeline

SYNOPSIS

       #include <curl/curl.h>

       CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_PIPELINE_LENGTH,
                                   long max);

DESCRIPTION

       No function since pipelining was removed in 7.62.0.

       Pass  a  long.  The  set  max 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
       CURLMOPT_MAX_HOST_CONNECTIONS(3)), or queue the request until one
       of the pipelines to the host is ready to accept a request. Thus, the total
       CURLMOPT_MAX_PIPELINE_LENGTH(3).

DEFAULT

       5

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         CURLM *m = curl_multi_init();
         /* set a more conservative pipe length */
         curl_multi_setopt(m, CURLMOPT_MAX_PIPELINE_LENGTH, 3L);
       }

AVAILABILITY

       Added in curl 7.30.0

RETURN VALUE

       curl_multi_setopt(3) returns a CURLMcode indicating success or error.

       CURLM_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

SEE ALSO

       CURLMOPT_MAX_HOST_CONNECTIONS(3), CURLMOPT_PIPELINING(3)

libcurl                                            2025-06-16                    CURLMOPT_MAX_PIPELINE_LENGTH(3)