Man page - curlinfo_used_proxy(3)

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Manual

CURLINFO_USED_PROXY

NAME
SYNOPSIS
DESCRIPTION
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO

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 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);
}
}

AVAILABILITY

Added in curl 8.7.0

RETURN VALUE

curl_easy_getinfo(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3) .