NAME

       CURLOPT_SOCKS5_GSSAPI_NEC - SOCKS proxy GSSAPI negotiation protection

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKS5_GSSAPI_NEC, long nec);

DESCRIPTION

       Pass  a  long  set to 1 to enable or 0 to disable. As part of the GSSAPI negotiation a protection mode is
       negotiated. The RFC 1961 says  in  section  4.3/4.4  it  should  be  protected,  but  the  NEC  reference
       implementation  does not.  If enabled, this option allows the unprotected exchange of the protection mode
       negotiation.

DEFAULT

       ?

PROTOCOLS

       This functionality affects all supported protocols

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, "socks5://proxy");
           curl_easy_setopt(curl, CURLOPT_SOCKS5_GSSAPI_NEC, 1L);
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in curl 7.19.4

RETURN VALUE

       curl_easy_setopt(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

       CURLOPT_PROXY(3), CURLOPT_PROXY_SERVICE_NAME(3)

libcurl                                            2025-03-05                       CURLOPT_SOCKS5_GSSAPI_NEC(3)