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CURLMOPT_MAX_PIPELINE_LENGTH

Section: C Library Functions (3)
Updated: 202-0-19
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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

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).