Provided by: libcurl4-doc_7.58.0-2ubuntu3.24_all 

NAME
CURLINFO_PRIMARY_PORT - get the latest destination port number
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIMARY_PORT, long *portp);
DESCRIPTION
Pass a pointer to a long to receive the destination port of the most recent connection done with this
curl handle.
PROTOCOLS
All
EXAMPLE
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);
}
AVAILABILITY
Added in 7.21.0
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO
curl_easy_getinfo(3), curl_easy_setopt(3),
libcurl 7.58.0 May 06, 2017 CURLINFO_PRIMARY_PORT(3)