CURLOPT_PROXYPORT - Man Page

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYPORT, long port);

Pass a long with this option to set the proxy port to connect to unless it is specified in the proxy string CURLOPT_PROXY(3) or uses 443 for https proxies and 1080 for all others as default.

While this accepts a 'long', the port number is 16 bit so it cannot be larger than 65535.

0, not specified which makes it use the default port

All

CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
  curl_easy_setopt(curl, CURLOPT_PROXY, "localhost");
  curl_easy_setopt(curl, CURLOPT_PROXYPORT, 8080L);
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}

Always

Returns CURLE_OK

CURLOPT_PROXY(3), CURLOPT_PROXYTYPE(3),

curl_easy_setopt(3), CURLOPT_HTTPPROXYTUNNEL(3), CURLOPT_PRE_PROXY(3), CURLOPT_PROXY(3), CURLOPT_PROXYAUTH(3), CURLOPT_PROXYTYPE(3), libcurl-tutorial(3).