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setopt: add CURLOPT_DOH_URL

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Closes #2668
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Daniel Stenberg 2018-09-06 09:16:02 +02:00
parent 3f3b26d6fe
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15 changed files with 1174 additions and 62 deletions
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2
docs/libcurl/curl_easy_setopt.3
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@ -199,6 +199,8 @@ Bind connection locally to port range. See \fICURLOPT_LOCALPORTRANGE(3)\fP
Timeout for DNS cache. See \fICURLOPT_DNS_CACHE_TIMEOUT(3)\fP
.IP CURLOPT_DNS_USE_GLOBAL_CACHE
OBSOLETE Enable global DNS cache. See \fICURLOPT_DNS_USE_GLOBAL_CACHE(3)\fP
.IP CURLOPT_DOH_URL
Use this DOH server for name resolves. See \fICURLOPT_DOH_URL(3)\fP
.IP CURLOPT_BUFFERSIZE
Ask for alternate buffer size. See \fICURLOPT_BUFFERSIZE(3)\fP
.IP CURLOPT_PORT

71
docs/libcurl/opts/CURLOPT_DOH_URL.3 Normal file
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@ -0,0 +1,71 @@
.\" **************************************************************************
.\" * _ _ ____ _
.\" * Project ___| | | | _ \| |
.\" * / __| | | | |_) | |
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
.\" * Copyright (C) 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 CURLOPT_DOH_URL 3 "18 Jun 2018" "libcurl 7.62.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_DOH_URL \- provide the DNS-over-HTTPS URL
.SH SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DOH_URL, char *URL);
.SH DESCRIPTION
Pass in a pointer to a \fIURL\fP for the DOH server to use for name
resolving. The parameter should be a char * to a zero terminated string which
must be URL-encoded in the following format: "https://host:port/path". It MUST
specify a HTTPS URL.
libcurl doesn't validate the syntax or use this variable until the transfer is
issued. Even if you set a crazy value here, \fIcurl_easy_setopt(3)\fP will
still return \fICURLE_OK\fP.
curl sends POST requests to the given DNS-over-HTTPS URL.
To find the DOH server itself, which might be specified using a name, libcurl
will use the default name lookup function. You can bootstrap that by providing
the address for the DOH server with \fICURLOPT_RESOLVE(3)\fP.
Disable DOH use again by setting this option to NULL.
.SH DEFAULT
NULL - there is no default DOH URL. If this option isn't set, libcurl will use
the default name resolver.
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
curl_easy_setopt(curl, CURLOPT_DOH_URL, "https://dns.example.com");
curl_easy_perform(curl);
}
.fi
.SH AVAILABILITY
Added in 7.62.0
.SH RETURN VALUE
Returns CURLE_OK on success or CURLE_OUT_OF_MEMORY if there was insufficient
heap space.
Note that \fIcurl_easy_setopt(3)\fP won't actually parse the given string so
given a bad DOH URL, curl will not detect a problem until it tries to resolve
a name with it.
.SH "SEE ALSO"
.BR CURLOPT_VERBOSE "(3), " CURLOPT_RESOLVE "(3), "

1
docs/libcurl/opts/Makefile.inc
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@ -122,6 +122,7 @@ man_MANS = \
CURLOPT_DNS_SERVERS.3 \
CURLOPT_DNS_SHUFFLE_ADDRESSES.3 \
CURLOPT_DNS_USE_GLOBAL_CACHE.3 \
CURLOPT_DOH_URL.3 \
CURLOPT_EGDSOCKET.3 \
CURLOPT_ERRORBUFFER.3 \
CURLOPT_EXPECT_100_TIMEOUT_MS.3 \

1
docs/libcurl/symbols-in-versions
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@ -384,6 +384,7 @@ CURLOPT_DNS_LOCAL_IP6 7.33.0
CURLOPT_DNS_SERVERS 7.24.0
CURLOPT_DNS_SHUFFLE_ADDRESSES 7.60.0
CURLOPT_DNS_USE_GLOBAL_CACHE 7.9.3 7.11.1
CURLOPT_DOH_URL 7.62.0
CURLOPT_EGDSOCKET 7.7
CURLOPT_ENCODING 7.10
CURLOPT_ERRORBUFFER 7.1