CURLOPT_RESOLVER_START_DATA - pointer passed to the resolver start callback
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESOLVER_START_DATA, void *pointer);
curl_easy_setopt options CURLOPT_RESOLVER_START_DATA(3) 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 that will be untouched by libcurl and passed as the third argument in the resolver start callback set with CUR- LOPT_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 ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | web/curl | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO CURLOPT_RESOLVER_START_FUNCTION(3) NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://curl.se/down- load/curl-7.83.1.tar.bz2. Further information about this software can be found on the open source community website at http://curl.haxx.se/. libcurl 7.83.1 November 26, 2021 CURLOPT_RESOLVER_START_DATA(3)