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CURLOPT_SO..._GSSAPI_NEC(3) Library Functions Manual CURLOPT_SO..._GSSAPI_NEC(3) 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 nego- tiation 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 pro- tection mode negotiation. DEFAULT ? PROTOCOLS This functionality affects all supported protocols EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode result; 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); result = 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 2026-06-11 CURLOPT_SO..._GSSAPI_NEC(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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