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Diffstat (limited to 'docs/libcurl/opts/GNURLOPT_UPLOAD_BUFFERSIZE.3')
| -rw-r--r-- | docs/libcurl/opts/GNURLOPT_UPLOAD_BUFFERSIZE.3 | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/docs/libcurl/opts/GNURLOPT_UPLOAD_BUFFERSIZE.3 b/docs/libcurl/opts/GNURLOPT_UPLOAD_BUFFERSIZE.3 new file mode 100644 index 000000000..9cc3f6cac --- /dev/null +++ b/docs/libcurl/opts/GNURLOPT_UPLOAD_BUFFERSIZE.3 @@ -0,0 +1,69 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 1998 - 2018, 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 GNURLOPT_UPLOAD_BUFFERSIZE 3 "18 Aug 2018" "libcurl 7.62.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_UPLOAD_BUFFERSIZE \- set preferred upload buffer size +.SH SYNOPSIS +#include <gnurl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD_BUFFERSIZE, long size); +.SH DESCRIPTION +Pass a long specifying your preferred \fIsize\fP (in bytes) for the upload +buffer in libcurl. It makes libcurl uses a larger buffer that gets passed to +the next layer in the stack to get sent off. In some setups and for some +protocols, there's a huge performance benefit of having a larger upload +buffer. + +This is just treated as a request, not an order. You cannot be guaranteed to +actually get the given size. + +The upload buffer size is by default 64 kilobytes. The maximum buffer size +allowed to be set is 2 megabytes. The minimum buffer size allowed to be set is +16 kilobytes. + +Since curl 7.61.1 the upload buffer is allocated on-demand - so if the handle +isn't used for upload, this buffer will not be allocated at all. +.SH DEFAULT +64 kB +.SH PROTOCOLS +All +.SH EXAMPLE +.nf +CURL *curl = curl_easy_init(); +if(curl) { + curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/foo.bin"); + + /* ask libcurl to allocate a larger upload buffer */ + curl_easy_setopt(curl, CURLOPT_UPLOAD_BUFFERSIZE, 120000L); + + ret = curl_easy_perform(curl); + + curl_easy_cleanup(curl); +} +.fi +.SH AVAILABILITY +Added in 7.62.0. +.SH RETURN VALUE +Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. +.SH "SEE ALSO" +.BR CURLOPT_BUFFERSIZE "(3), " CURLOPT_READFUNCTION "(3), " |