DOKK / manpages / debian 10 / libcurl4-doc / CURLINFO_PRIMARY_PORT.3.en
CURLINFO_PRIMARY_PORT(3) curl_easy_getinfo options CURLINFO_PRIMARY_PORT(3)

CURLINFO_PRIMARY_PORT - get the latest destination port number

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIMARY_PORT, long *portp);

Pass a pointer to a long to receive the destination port of the most recent connection done with this curl handle.

All

CURL *curl = curl_easy_init();
if(curl) {

CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
res = curl_easy_perform(curl);
if(res == CURLE_OK) {
long port;
res = curl_easy_getinfo(curl, CURLINFO_PRIMARY_PORT, &port);
if(!res)
printf("Connected to remote port: %ld\n", port);
}
curl_easy_cleanup(curl); }

Added in 7.21.0

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

curl_easy_getinfo(3), curl_easy_setopt(3),

May 6, 2017 libcurl 7.64.0