IP address of failed/tried connections?

Hi,

I would like to get the IP#(s) of both successful and failed
connections after "curl_easy_perform". For example: If I try to:

curl_easy_setopt(curl, CURLOPT_URL, "http://www.google.com:999");
res = curl_easy_perform(curl);

It will timeout for port 999 but both of these getinfo entries are empty:

curl_easy_getinfo(curl, CURLINFO_PRIMARY_IP, &ip);
curl_easy_getinfo(curl, CURLINFO_ACTIVESOCKET, &sockfd);

How do I programmatically get the tried IPs? (curl -v shows "Trying
[IP#]...", but I'm not looking for debug strings)

Hostnames resolve to many IP #s, different ones at different times of
day and from different geo locations. How can my software access and
use them from libcurl?
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Received on 2020-01-02