Yes, you are correct. The receive function on line 349 returns the remote address and port information via the remoteAddress and remotePort arguments. You can declare variables to store the remote address and port to be able to access them to determine the source of the message. For example:
char remoteAddress[16]; // Assuming IPv4 address, change size if using IPv6
int remotePort;
...
while (dataAvailable && count > 0) {
...
if (numBytesRcvd > 0) {
// Process received data
// ...
// Print remote address and port
mexPrintf("Received message from %s:%d\n", remoteAddress, remotePort);
}
