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.\" generated by cd2nroff 0.1 from CURLOPT_SOCKS5_AUTH.md
.TH CURLOPT_SOCKS5_AUTH 3 "2025-06-27" libcurl
.SH NAME
CURLOPT_SOCKS5_AUTH \- methods for SOCKS5 proxy authentication
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKS5_AUTH, long bitmask);
.fi
.SH DESCRIPTION
Pass a long as parameter, which is set to a bitmask, to tell libcurl which
authentication method(s) are allowed for SOCKS5 proxy authentication. The only
supported flags are \fICURLAUTH_BASIC\fP, which allows username/password
authentication, \fICURLAUTH_GSSAPI\fP, which allows GSS\-API authentication, and
\fICURLAUTH_NONE\fP, which allows no authentication. Set the actual username and
password with the \fICURLOPT_PROXYUSERPWD(3)\fP option.
.SH DEFAULT
CURLAUTH_BASIC|CURLAUTH_GSSAPI
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
/* request to use a SOCKS5 proxy */
curl_easy_setopt(curl, CURLOPT_PROXY, "socks5://user:pass@myproxy.com");
/* enable username/password authentication only */
curl_easy_setopt(curl, CURLOPT_SOCKS5_AUTH, (long)CURLAUTH_BASIC);
/* Perform the request */
curl_easy_perform(curl);
}
}
.fi
.SH AVAILABILITY
Added in curl 7.55.0
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_PROXY (3),
.BR CURLOPT_PROXYTYPE (3)