CURLINFO_PROXYAUTH_AVAIL - get available HTTP proxy authentication methods

NAME SYNOPSIS DESCRIPTION PROTOCOLS EXAMPLE AVAILABILITY RETURN VALUE SEE ALSO

NAME

CURLINFO_PROXYAUTH_AVAIL − get available HTTP proxy authentication methods

SYNOPSIS

#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).

PROTOCOLS

HTTP(S)

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
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);
}
}

AVAILABILITY

Added RFC 2617 in 7.10.8 Added RFC 7616 in 7.57.0

RETURN VALUE

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