Thread: C udp application simulate packet loss

have udp server-client application written in C. On the client side packet loss is detected using recvfrom function and sequence numbers of packets. How can I now simulate dropped packet's on the client side, for example if server is sending 1000 packet I want to drop 20% of them? I want to do this in the code, not for example using ip tables or WANEM or something like that. And one more thing, I have few clients and I want that they can dropped different packets, not the same one.

Code:

while(1){

    nbytes = recvfrom(socket, buffer, MAX_SIZE, 0, (struct sockaddr *) &srv_addr, &addrlen);

        if (nbytes != -1) {

    // packet is received

        }else{

    //packet is not received

        }

}

On receiving each datagram generate a random number and if the number is in the lower e.g. 80% range let it pass else dump it.

Different clients should have different sets of passed and dumped datagrams using this method.