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Diffstat (limited to 'docs/libcurl/opts/CURLOPT_STREAM_WEIGHT.3')
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1 files changed, 63 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_STREAM_WEIGHT.3 b/docs/libcurl/opts/CURLOPT_STREAM_WEIGHT.3 new file mode 100644 index 00000000..a2b2472a --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_STREAM_WEIGHT.3 @@ -0,0 +1,63 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al. +.\" * +.\" * This software is licensed as described in the file COPYING, which +.\" * you should have received as part of this distribution. The terms +.\" * are also available at https://curl.haxx.se/docs/copyright.html. +.\" * +.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell +.\" * copies of the Software, and permit persons to whom the Software is +.\" * furnished to do so, under the terms of the COPYING file. +.\" * +.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY +.\" * KIND, either express or implied. +.\" * +.\" ************************************************************************** +.\" +.TH CURLOPT_STREAM_WEIGHT 3 "13 Sep 2015" "libcurl 7.46.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_STREAM_WEIGHT \- set numerical stream weight +.SH SYNOPSIS +#include <curl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STREAM_WEIGHT, long weight); +.SH DESCRIPTION +Set the long \fIweight\fP to a number between 1 and 256. + +When using HTTP/2, this option sets the individual weight for this particular +stream used by the easy \fIhandle\fP. Setting and using weights only makes +sense and is only usable when doing multiple streams over the same +connections, which thus implies that you use \fICURLMOPT_PIPELINING(3)\fP. + +This option can be set during transfer and will then cause the updated weight +info get sent to the server the next time a HTTP/2 frame is sent to the +server. + +See section 5.3 of RFC 7540 for protocol details: +https://httpwg.github.io/specs/rfc7540.html#StreamPriority + +Streams with the same parent should be allocated resources proportionally +based on their weight. So if you have two streams going, stream A with weight +16 and stream B with weight 32, stream B will get two thirds (32/48) of the +available bandwidth (assuming the server can send off the data equally for +both streams). +.SH DEFAULT +If nothing is set, the HTTP/2 protocol itself will use its own default which +is 16. +.SH PROTOCOLS +HTTP/2 +.SH EXAMPLE +TODO +.SH AVAILABILITY +Added in 7.46.0 +.SH RETURN VALUE +Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. +.SH "SEE ALSO" +.BR CURLOPT_STREAM_DEPENDS "(3), " CURLOPT_STREAM_DEPENDS_E "(3), " +.BR CURLOPT_PIPEWAIT "(3), " CURLMOPT_PIPELINING "(3), " |