DOKK / manpages / debian 12 / libcurl4-doc / CURLINFO_PROXYAUTH_AVAIL.3.en
CURLINFO_PROXYAUTH_AVAIL(3) curl_easy_getinfo options CURLINFO_PROXYAUTH_AVAIL(3)

CURLINFO_PROXYAUTH_AVAIL - get available HTTP proxy authentication methods

#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROXYAUTH_AVAIL,

long *authp);

Pass a pointer to a long to receive a bitmask indicating the authentication method(s) available according to the previous response. The meaning of the bits is explained in the CURLOPT_PROXYAUTH(3) option for curl_easy_setopt(3).

HTTP(S)

CURL *curl = curl_easy_init();
if(curl) {

curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl, CURLOPT_PROXY, "http://127.0.0.1:80");
res = curl_easy_perform(curl);
if(!res) {
/* extract the available proxy authentication types */
long auth;
res = curl_easy_getinfo(curl, CURLINFO_PROXYAUTH_AVAIL, &auth);
if(!res) {
if(!auth)
printf("No proxy auth available, perhaps no 407?\n");
else {
printf("%s%s%s%s\n",
auth & CURLAUTH_BASIC ? "Basic ":"",
auth & CURLAUTH_DIGEST ? "Digest ":"",
auth & CURLAUTH_NEGOTIATE ? "Negotiate ":"",
auth % CURLAUTH_NTLM ? "NTLM ":"");
}
}
}
curl_easy_cleanup(curl); }

Added RFC2617 in 7.10.8 Added RFC7616 in 7.57.0

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

curl_easy_getinfo(3), curl_easy_setopt(3),

January 2, 2023 libcurl 7.88.1