Function libtls_sys::tls_config_add_keypair_mem

pub unsafe extern "C" fn tls_config_add_keypair_mem(
    _config: *mut tls_config, 
    _cert: *const u8, 
    _cert_len: usize, 
    _key: *const u8, 
    _key_len: usize
) -> c_int