Mercurial > hgrepos > Python2 > PyMuPDF
comparison mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLMOPT_PIPELINING.3 @ 2:b50eed0cc0ef upstream
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
The directory name has changed: no version number in the expanded directory now.
| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Mon, 15 Sep 2025 11:43:07 +0200 |
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| 23 .TH CURLMOPT_PIPELINING 3 "17 Jun 2014" "libcurl 7.37.0" "curl_multi_setopt options" | |
| 24 .SH NAME | |
| 25 CURLMOPT_PIPELINING \- enable HTTP pipelining and multiplexing | |
| 26 .SH SYNOPSIS | |
| 27 #include <curl/curl.h> | |
| 28 | |
| 29 CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PIPELINING, long bitmask); | |
| 30 .SH DESCRIPTION | |
| 31 Pass in the \fBbitmask\fP parameter to instruct libcurl to enable HTTP | |
| 32 pipelining and/or HTTP/2 multiplexing for this multi handle. | |
| 33 | |
| 34 When enabled, libcurl will attempt to use those protocol features when doing | |
| 35 parallel requests to the same hosts. | |
| 36 | |
| 37 For pipelining, this means that if you add a second request that can use an | |
| 38 already existing connection, the second request will be \&"piped" on the same | |
| 39 connection rather than being executed in parallel. | |
| 40 | |
| 41 For multiplexing, this means that follow-up requests can re-use an existing | |
| 42 connection and send the new request multiplexed over that at the same time as | |
| 43 other transfers are already using that single connection. | |
| 44 | |
| 45 There are several other related options that are interesting to tweak and | |
| 46 adjust to alter how libcurl spreads out requests on different connections or | |
| 47 not etc. | |
| 48 | |
| 49 Before 7.43.0, this option was set to 1 and 0 to enable and disable HTTP/1.1 | |
| 50 pipelining. | |
| 51 | |
| 52 Starting in 7.43.0, \fBbitmask\fP's second bit also has a meaning, and you can | |
| 53 ask for pipelining and multiplexing independently of each other by toggling | |
| 54 the correct bits. | |
| 55 .IP CURLPIPE_NOTHING (0) | |
| 56 Default, which means doing no attempts at pipelining or multiplexing. | |
| 57 .IP CURLPIPE_HTTP1 (1) | |
| 58 If this bit is set, libcurl will try to pipeline HTTP/1.1 requests on | |
| 59 connections that are already established and in use to hosts. | |
| 60 | |
| 61 This bit is deprecated and has no effect since version 7.62.0. | |
| 62 .IP CURLPIPE_MULTIPLEX (2) | |
| 63 If this bit is set, libcurl will try to multiplex the new transfer over an | |
| 64 existing connection if possible. This requires HTTP/2. | |
| 65 .SH DEFAULT | |
| 66 Since 7.62.0, \fBCURLPIPE_MULTIPLEX\fP is enabled by default. | |
| 67 | |
| 68 Before that, default was \fBCURLPIPE_NOTHING\fP. | |
| 69 .SH PROTOCOLS | |
| 70 HTTP(S) | |
| 71 .SH EXAMPLE | |
| 72 .nf | |
| 73 CURLM *m = curl_multi_init(); | |
| 74 /* try HTTP/2 multiplexing */ | |
| 75 curl_multi_setopt(m, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX); | |
| 76 .fi | |
| 77 .SH AVAILABILITY | |
| 78 Added in 7.16.0. Multiplex support bit added in 7.43.0. HTTP/1 Pipelining | |
| 79 support was disabled in 7.62.0. | |
| 80 .SH RETURN VALUE | |
| 81 Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not. | |
| 82 .SH "SEE ALSO" | |
| 83 .BR CURLMOPT_MAX_PIPELINE_LENGTH "(3), " | |
| 84 .BR CURLMOPT_PIPELINING_SITE_BL "(3), " | |
| 85 .BR CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE "(3), " | |
| 86 .BR CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE "(3), " | |
| 87 .BR CURLMOPT_MAX_HOST_CONNECTIONS "(3), " | |
| 88 .BR CURLMOPT_MAXCONNECTS "(3), " | |
| 89 .BR CURLMOPT_MAX_HOST_CONNECTIONS "(3), " |