docs/libcurl/opts/CURLOPT_PROXYAUTH.3

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.TH CURLOPT_PROXYAUTH 3 "September 08, 2021" "libcurl 7.80.0" "curl_easy_setopt options"

.SH NAME
CURLOPT_PROXYAUTH \- HTTP proxy authentication methods
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYAUTH, long bitmask);
.SH DESCRIPTION
Pass a long as parameter, which is set to a bitmask, to tell libcurl which
HTTP authentication method(s) you want it to use for your proxy
authentication.  If more than one bit is set, libcurl will first query the
site to see what authentication methods it supports and then pick the best one
you allow it to use. For some methods, this will induce an extra network
round-trip. Set the actual name and password with the
\fICURLOPT_PROXYUSERPWD(3)\fP option.

The bitmask can be constructed by or'ing together the bits fully listed and
described in the \fICURLOPT_HTTPAUTH(3)\fP man page.
.SH DEFAULT
CURLAUTH_BASIC
.SH PROTOCOLS
HTTP
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  CURLcode ret;
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
  /* use this proxy */
  curl_easy_setopt(curl, CURLOPT_PROXY, "http://local.example.com:1080");
  /* allow whatever auth the proxy speaks */
  curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
  /* set the proxy credentials */
  curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, "james:007");
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}
.fi
.SH AVAILABILITY
Added in 7.10.7
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_NOT_BUILT_IN if the bitmask specified no supported authentication
methods.
.SH "SEE ALSO"
.BR CURLOPT_PROXY "(3), " CURLOPT_PROXYTYPE "(3), "
.BR CURLOPT_PROXYUSERPWD "(3), " CURLOPT_PROXYPORT "(3), "