--- c: Copyright (C) Daniel Stenberg, , et al. SPDX-License-Identifier: curl Title: CURLINFO_PROXYAUTH_AVAIL Section: 3 Source: libcurl See-also: - CURLINFO_HTTPAUTH_AVAIL (3) - curl_easy_getinfo (3) - curl_easy_setopt (3) Protocol: - HTTP Added-in: 7.10.8 --- # NAME CURLINFO_PROXYAUTH_AVAIL - get available HTTP proxy authentication methods # SYNOPSIS ~~~c #include CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROXYAUTH_AVAIL, long *authp); ~~~ # DESCRIPTION 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% # EXAMPLE ~~~c 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% # RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.