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CURLINFO_P...AUTH_AVAIL(3) Library Functions Manual CURLINFO_P...AUTH_AVAIL(3)

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);

DESCRIPTION
       Pass a pointer to a long	to receive a bitmask indicating	the  authenti-
       cation  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
       This functionality affects http only

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 in	curl 7.10.8

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
       CURLINFO_HTTPAUTH_AVAIL(3), curl_easy_getinfo(3), curl_easy_setopt(3)

libcurl				  2025-06-03	    CURLINFO_P...AUTH_AVAIL(3)

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