curl / libcurl / API / curl_easy_getinfo / CURLINFO_USED_PROXY

CURLINFO_USED_PROXY explained

Name

CURLINFO_USED_PROXY - 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

This functionality affects all supported protocols

Example

 int main(int argc, char *argv[]) {   CURL *curl = curl_easy_init();   if(curl) {   CURLcode result;   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");     result = curl_easy_perform(curl);     if(!result) {   /* extract the available proxy authentication types */   long used;   result = curl_easy_getinfo(curl, CURLINFO_USED_PROXY, &used);   if(!result) {   printf("The proxy was %sused\n", used ? "" : "NOT ");   }   }   curl_easy_cleanup(curl);   } }

Availability

Added in curl 8.7.0

Return value

curl_easy_getinfo returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors.