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CURLOPT_DOH_URL(3)	   curl_easy_setopt options	    CURLOPT_DOH_URL(3)

NAME
       CURLOPT_DOH_URL - provide the DNS-over-HTTPS URL

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DOH_URL, char *URL);

DESCRIPTION
       Pass  in  a pointer to a URL for the DOH server to use for name resolv-
       ing. 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,
       curl_easy_setopt(3) will still return CURLE_OK.

       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   CUR-
       LOPT_RESOLVE(3).

       Disable DOH use again by setting this option to NULL.

DEFAULT
       NULL  -	there is no default DOH URL. If this option isn't set, libcurl
       will use the default name resolver.

PROTOCOLS
       All

EXAMPLE
       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);
       }

AVAILABILITY
       Added in 7.62.0

RETURN VALUE
       Returns CURLE_OK on success or CURLE_OUT_OF_MEMORY if there was	insuf-
       ficient heap space.

       Note  that curl_easy_setopt(3) 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.

SEE ALSO
       CURLOPT_VERBOSE(3), CURLOPT_RESOLVE(3),

libcurl 7.63.0		      September 06, 2018	    CURLOPT_DOH_URL(3)