CURLOPT_RESOLVER_START_DATA(3) Library Functions Manual
NAME
CURLOPT_RESOLVER_START_DATA - pointer passed to the resolver start
callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESOLVER_START_DATA,
void *pointer);
DESCRIPTION
Pass a pointer is be untouched by libcurl and passed as the third
argument in the resolver start callback set with
CURLOPT_RESOLVER_START_FUNCTION(3).
DEFAULT
NULL
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
static int resolver_start_cb(void *resolver_state, void *reserved,
void *userdata)
{
(void)reserved;
printf("Received resolver_state=%p userdata=%p\n",
resolver_state, userdata);
return 0;
}
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_RESOLVER_START_FUNCTION, resolver_start_cb);
curl_easy_setopt(curl, CURLOPT_RESOLVER_START_DATA, curl);
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
AVAILABILITY
Added in curl 7.59.0
RETURN VALUE
Returns CURLE_OK
SEE ALSO
CURLOPT_PREREQFUNCTION(3), CURLOPT_RESOLVER_START_FUNCTION(3)
libcurl 2024-08-05 CURLOPT_RESOLVER_START_DATA(3)
curl 8.9.1 - Generated Wed Aug 7 14:07:55 CDT 2024