CURLOPT_RESOLVER_START_DATA - Man Page
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 that will 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
All
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; } 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 7.59.0
Return Value
Returns CURLE_OK
See Also
Referenced By
curl_easy_setopt(3), CURLOPT_RESOLVER_START_FUNCTION(3).
April 26, 2023 ibcurl 8.1.2 libcurl