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55 lines
1.7 KiB
Groff
55 lines
1.7 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLMOPT_PIPELINING.md
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.TH CURLMOPT_PIPELINING 3 "2024-08-02" libcurl
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.SH NAME
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CURLMOPT_PIPELINING \- enable HTTP multiplexing
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PIPELINING, long bitmask);
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.fi
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.SH DESCRIPTION
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Pass in the correct value in the \fBbitmask\fP parameter to instruct libcurl to
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enable multiplexing for this multi handle.
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With multiplexing enabled, libcurl attempts to do multiple transfers over the
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same connection when doing parallel transfers to the same hosts.
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.IP "CURLPIPE_NOTHING (0)"
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Default, which means doing no attempts at multiplexing.
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.IP "CURLPIPE_HTTP1 (1)"
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This bit is deprecated and has no effect since version 7.62.0.
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.IP "CURLPIPE_MULTIPLEX (2)"
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If this bit is set, libcurl tries to multiplex the new transfer over an
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existing connection if possible. This requires HTTP/2 or HTTP/3.
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.SH DEFAULT
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\fBCURLPIPE_MULTIPLEX\fP
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.SH PROTOCOLS
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This functionality affects http only
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURLM *m = curl_multi_init();
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/* try HTTP/2 multiplexing */
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curl_multi_setopt(m, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
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}
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.fi
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.SH HISTORY
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The multiplex support bit was added in 7.43.0. HTTP/1 Pipelining support was
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disabled in 7.62.0.
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Since 7.62.0, \fBCURLPIPE_MULTIPLEX\fP is enabled by default.
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Before that, default was \fBCURLPIPE_NOTHING\fP.
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.SH AVAILABILITY
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Added in curl 7.16.0
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.SH RETURN VALUE
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Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE (3),
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.BR CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE (3),
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.BR CURLMOPT_MAXCONNECTS (3),
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.BR CURLMOPT_MAX_HOST_CONNECTIONS (3),
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.BR CURLMOPT_MAX_PIPELINE_LENGTH (3),
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.BR CURLMOPT_PIPELINING_SITE_BL (3)
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