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You could just add an error check:



i = recvfrom(Socket, response, sizeof(response), 0, 0, 0);
if (i == SOCKET_ERROR) {
Com_Printf("recvfrom failed with error %d\n", WSAGetLastError());
...

To make sure this is not a non-blocked-recvfrom() issue, can you try:



sendto(Socket, data, strlen(data), 0, (SOCKADDR *)&server, sizeof(server));
Sleep(1000); // just to wait till there is...

Shouldnt data be terminated by \0? There is no room for it in the [9].

Your message should show up in wireshark. (https://www.wireshark.org/)

Try this. With the output you should be able to see if it worked.


void gsc_utils_foo() {
char *ip;
int port;
...

How do you call your function in cod2?

Like this

foo("1.1.1.1", 28962);



int port;
char *srt;

Can you post your changes? I can't say what is wrong with so little code. You could use Wireshark to see if your message gets send.
Also you could try debugging your function with printf (for...