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CURLINFO_USED_PROXY - Man Page

whether the transfer used a proxy

Synopsis

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_USED_PROXY,
                           long *authp);

Description

Pass a pointer to a long. It gets set to zero set if no proxy was used in the previous transfer or a non-zero value if a proxy was used.

Protocols

All

Example

int main(int argc, char *argv[])
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
    curl_easy_setopt(curl, CURLOPT_PROXY, "http://127.0.0.1:80");
    curl_easy_setopt(curl, CURLOPT_NOPROXY, "example.com");

    res = curl_easy_perform(curl);

    if(!res) {
      /* extract the available proxy authentication types */
      long used;
      res = curl_easy_getinfo(curl, CURLINFO_USED_PROXY, &used);
      if(!res) {
        printf("The proxy was %sused\n", used ? "": "NOT ");
      }
    }
    curl_easy_cleanup(curl);
  }
}