cmp_sock_addr
err = cmp_sock_addr(test->ops->getsockname, serv, &expected_addr,
err = cmp_sock_addr(test->ops->getpeername, client, &expected_addr,
err = cmp_sock_addr(test->ops->getsockname, client,
err = cmp_sock_addr(test->ops->getsockname, serv, &expected_addr, expected_addr_len, true);
err = cmp_sock_addr(test->ops->getpeername, client, &expected_addr,