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Diffstat (limited to 'docs/libcurl/opts/CURLOPT_HSTS.3')
| -rw-r--r-- | docs/libcurl/opts/CURLOPT_HSTS.3 | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_HSTS.3 b/docs/libcurl/opts/CURLOPT_HSTS.3 new file mode 100644 index 000000000..2eb366878 --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_HSTS.3 @@ -0,0 +1,81 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 2020, 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.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_HSTS 3 "5 Feb 2019" "libcurl 7.74.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_HSTS \- set HSTS cache file name +.SH SYNOPSIS +.nf +#include <curl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HSTS, char *filename); +.fi +.SH EXPERIMENTAL +Warning: this feature is early code and is marked as experimental. It can only +be enabled by explicitly telling configure with \fB--enable-hsts\fP. You are +advised to not ship this in production before the experimental label is +removed. +.SH DESCRIPTION +Make the \fIfilename\fP point to a file name to load an existing HSTS cache +from, and to store the cache in when the easy handle is closed. Setting a file +name with this option will also enable HSTS for this handle (the equivalent of +setting \fICURLHSTS_ENABLE\fP with \fICURLOPT_HSTS_CTRL(3)\fP). + +If the given file does not exist or contains no HSTS entries at startup, the +HSTS cache will simply start empty. Setting the file name to NULL or "" will +only enable HSTS without reading from or writing to any file. + +If this option is set multiple times, libcurl will load cache entries from +each given file but will only store the last used name for later writing. +.SH "FILE FORMAT" +The HSTS cache is saved to and loaded from a text file with one entry per +physical line. Each line in the file has the following format: + +[host] [stamp] + +[host] is the domain name for the entry and the name is dot-prefixed if it is +a includeSubDomain entry (if the entry is valid for all subdmains to the name +as well or only for the exact name). + +[stamp] is the time (in UTC) when the entry expires and it uses the format +\&"YYYYMMDD HH:MM:SS". + +Lines starting with "#" are treated as comments and are ignored. There is +currently no length or size limit. +.SH DEFAULT +NULL, no file name +.SH PROTOCOLS +HTTPS and HTTP +.SH EXAMPLE +.nf +CURL *curl = curl_easy_init(); +if(curl) { + curl_easy_setopt(curl, CURLOPT_HSTS, "/home/user/.hsts-cache"); + curl_easy_perform(curl); +} +.fi +.SH AVAILABILITY +Added in 7.74.0 +.SH RETURN VALUE +Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. +.SH "SEE ALSO" +.BR CURLOPT_HSTS_CTRL "(3), " CURLOPT_ALTSVC "(3), " CURLOPT_RESOLVE "(3), " |