If you are experiencing issues with Memoji face tracking not working when using iMessage, there are a few things you can try to resolve the problem: Make sure that you have enabled camera access for iMessage in your device settings. To do this, go to Settings > Privacy > Camera and make sure that iMessage is turned on. Restart your device. Sometimes, simply restarting your device can resolve issues with Memoji and other features. Check for updates to your device and to the iMessage app. Updating your device and apps can often resolve bugs and improve performance. Try creating a new Memoji and see if the face tracking works with the new Memoji. If it does, the issue may be with the original Memoji. If none of the above steps resolve the issue, you may need to contact Apple Support for further assistance.

When you call setsockopt() in a loop to set the IP_TTL option on a socket, the IP_TTL value may not be set correctly because the socket is not closed and reopened for each iteration of the loop. The setsockopt() function sets options on a socket. In the case of setting the IP_TTL option, it specifies the time-to-live value for outgoing IP packets. However, the socket needs to be closed and reopened after each call to setsockopt() to ensure that the changes take effect. If the socket is not closed and reopened, subsequent calls to setsockopt() will not change the IP_TTL value because the previous socket is still in use with the previous value. This can result in unexpected behavior, such as packets not being sent with the expected TTL value. To fix this issue, you should close the socket and reopen it for each iteration of the loop where you call setsockopt() to set the IP_TTL value. Alternatively, you can use a separate socket for each iteration of the loop to avoid this problem. Here is an example of how you could modify your code to ensure that the IP_TTL value is set correctly: c Copy code #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> int main() { int sock, ttl, i, optval; struct sockaddr_in addr; sock = socket(AF_INET, SOCK_DGRAM, 0); if (sock < 0) { perror("socket"); exit(EXIT_FAILURE); } memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); addr.sin_port = htons(1234); for (i = 1; i <= 5; i++) { ttl = i; optval = ttl; if (setsockopt(sock, IPPROTO_IP, IP_TTL, &optval, sizeof(optval)) < 0) { perror("setsockopt"); exit(EXIT_FAILURE); } if (sendto(sock, "test", 4, 0, (struct sockaddr *)&addr, sizeof(addr)) < 0) { perror("sendto"); exit(EXIT_FAILURE); } close(sock); sock = socket(AF_INET, SOCK_DGRAM, 0); if (sock < 0) { perror("socket"); exit(EXIT_FAILURE); } } close(sock); exit(EXIT_SUCCESS); } In this modified code, the socket is closed and reopened for each iteration of the loop where setsockopt() is called to set the IP_TTL value. This ensures that the changes take effect and the correct TTL value is used for each packet. https://apunkagames.cc/