mirror of
https://github.com/moparisthebest/curl
synced 2024-11-18 07:25:14 -05:00
80 lines
3.1 KiB
Groff
80 lines
3.1 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 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_HSTSWRITEFUNCTION 3 "14 Sep 2020" "libcurl 7.74.0" "curl_easy_setopt options"
|
|
.SH NAME
|
|
CURLOPT_HSTSWRITEFUNCTION \- write callback for HSTS hosts
|
|
.SH SYNOPSIS
|
|
#include <curl/curl.h>
|
|
|
|
CURLSTScode hstswrite(CURL *easy, struct curl_hstsentry *sts,
|
|
struct curl_index *count, void *userp);
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HSTSWRITEFUNCTION, hstswrite);
|
|
.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
|
|
Pass a pointer to your callback function, as the prototype shows above.
|
|
|
|
This callback function gets called by libcurl repeatedly to allow the
|
|
application to store the in-memory HSTS cache when libcurl is about to discard
|
|
it.
|
|
|
|
Set the \fIuserp\fP argument with the \fICURLOPT_HSTSWRITEDATA(3)\fP option or
|
|
it will be NULL.
|
|
|
|
When the callback is invoked, the \fIsts\fP pointer points to a populated
|
|
struct: Read the host name to 'name' (it is 'namelen' bytes long and null
|
|
terminated. The 'includeSubDomains' field is non-zero if the entry matches
|
|
subdomains. The 'expire' string is a date stamp null-terminated string using
|
|
the syntax YYYYMMDD HH:MM:SS.
|
|
|
|
The callback should return \fICURLSTS_OK\fP if it succeeded and is prepared to
|
|
be called again (for another host) or \fICURLSTS_DONE\fP if there's nothing
|
|
more to do. It can also return \fICURLSTS_FAIL\fP to signal error.
|
|
.SH DEFAULT
|
|
NULL - no callback.
|
|
.SH PROTOCOLS
|
|
This feature is only used for HTTP(S) transfer.
|
|
.SH EXAMPLE
|
|
.nf
|
|
{
|
|
/* set HSTS read callback */
|
|
curl_easy_setopt(curl, CURLOPT_HSTSWRITEFUNCTION, hstswrite);
|
|
|
|
/* pass in suitable argument to the callback */
|
|
curl_easy_setopt(curl, CURLOPT_HSTSWRITEDATA, &hstspreload[0]);
|
|
|
|
result = curl_easy_perform(curl);
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in 7.74.0
|
|
.SH RETURN VALUE
|
|
This will return CURLE_OK.
|
|
.SH "SEE ALSO"
|
|
.BR CURLOPT_HSTSWRITEDATA "(3), " CURLOPT_HSTSWRITEFUNCTION "(3), "
|
|
.BR CURLOPT_HSTS "(3), " CURLOPT_HSTS_CTRL "(3), "
|