Function wolfSSL_select_next_proto 

pub unsafe extern "C" fn wolfSSL_select_next_proto(
    out: *mut *mut c_uchar,
    outlen: *mut c_uchar,
    in_: *const c_uchar,
    inlen: c_uint,
    client: *const c_uchar,
    client_len: c_uint,
) -> c_int