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Daniel Stenberg 6afac4f992

libcurl has not supported HTTP pipelining since many years. Remove a few
(more) mentions of the feature.

Closes #13254

2024-04-01 14:41:52 +02:00

1.7 KiB

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SPDX-License-Identifier

Title

Section

Source

See-also

Protocol

curl

CURLMOPT_PIPELINING

libcurl

CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE (3)

CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE (3)

CURLMOPT_MAXCONNECTS (3)

CURLMOPT_MAX_HOST_CONNECTIONS (3)

CURLMOPT_MAX_PIPELINE_LENGTH (3)

CURLMOPT_PIPELINING_SITE_BL (3)

HTTP

NAME

CURLMOPT_PIPELINING - enable HTTP multiplexing

SYNOPSIS

#include <curl/curl.h>

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

DESCRIPTION

Pass in the correct value in the bitmask parameter to instruct libcurl to enable multiplexing for this multi handle.

With multiplexing enabled, libcurl attempts to do multiple transfers over the same connection when doing parallel transfers to the same hosts.

CURLPIPE_NOTHING (0)

Default, which means doing no attempts at multiplexing.

CURLPIPE_HTTP1 (1)

This bit is deprecated and has no effect since version 7.62.0.

CURLPIPE_MULTIPLEX (2)

If this bit is set, libcurl tries to multiplex the new transfer over an existing connection if possible. This requires HTTP/2 or HTTP/3.

DEFAULT

Since 7.62.0, CURLPIPE_MULTIPLEX is enabled by default.

Before that, default was CURLPIPE_NOTHING.

EXAMPLE

int main(void)
{
  CURLM *m = curl_multi_init();
  /* try HTTP/2 multiplexing */
  curl_multi_setopt(m, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
}

AVAILABILITY

Added in 7.16.0. Multiplex support bit added in 7.43.0. HTTP/1 Pipelining support was disabled in 7.62.0.

RETURN VALUE

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

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