sin.sin_port = htons(DEFAULT_NETWORK_VIEWER_PORT);
ret = inet_pton(sin.sin_family, "127.0.0.1", &sin.sin_addr);
if (ret < 1) {
sin.sin_port = htons(DEFAULT_NETWORK_VIEWER_PORT);
ret = inet_pton(sin.sin_family, "127.0.0.1", &sin.sin_addr);
if (ret < 1) {