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CURLINFO_USED_PROXY(3) Library Functions Manual CURLINFO_USED_PROXY(3) 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 == CURLE_OK) { /* extract the available proxy authentication types */ long used; result = curl_easy_getinfo(curl, CURLINFO_USED_PROXY, &used); if(result == CURLE_OK) { 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). SEE ALSO CURLOPT_NOPROXY(3), CURLOPT_PROXY(3), curl_easy_getinfo(3), curl_easy_se- topt(3) libcurl 2026-06-11 CURLINFO_USED_PROXY(3)
NAME | SYNOPSIS | DESCRIPTION | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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