sock_connect
CHECKr(pthread_create(&connect_thread, NULL, sock_connect, NULL));
CHECKr(pthread_create(&connect_thread, NULL, sock_connect, NULL));
CHECKr(pthread_create(&connect_thread, NULL, sock_connect, NULL));
CHECKr(pthread_create(&thread, &attr, sock_connect,
CHECKr(pthread_create(&thread, NULL, sock_connect,
CHECKr(pthread_create(&connect_thread, NULL, sock_connect,