Function SSLSetDatagramHelloCookie 

pub unsafe extern "C-unwind" fn SSLSetDatagramHelloCookie(
    dtls_context: &SSLContext,
    cookie: *const c_void,
    cookie_len: usize,
) -> i32

👎Deprecated: No longer supported. Use Network.framework.

Available on crate feature SecureTransport only.

Safety

cookie must be a valid pointer or null.