void collect(socket_fd client_socket){
packet_t anything;
unsigned int usleep_time = (unsigned int) 1000000 / samples_per_second;
struct sockaddr_in* sock = alloc(struct sockaddr_in, 1);
char buffer[sizeof(packet_t)];
sock->sin_family = AF_INET;
sock->sin_port = htons(sink_dport);
sock->sin_addr.s_addr = inet_addr(sink_dip);
while(npackets > 0){
memset(&anything, 0, sizeof(anything));
init_packet(&anything);
write_data(anything.accumulated_time, anything.in_time, anything.id, "me", anything.samples);
swap_packet_byte_order(&anything);
memcpy(buffer, &anything, sizeof(packet_t));
if(sendto(client_socket, buffer, sizeof(packet_t), 0,(const struct sockaddr *) sock, sizeof(struct sockaddr_in)) == -1){
log(E, "Could not send packet\n");
}
npackets--;
usleep(usleep_time);
}
printf("Simulation has ended.\n");
}
void serve(int server_fd){
char buff[sizeof(packet_t)];
socklen_t client_length;
char source_ip_port[22] = {0};
packet_t pk;
struct sockaddr_in client;
while(true){
memset(buff, 0, sizeof(packet_t));
memset(&client, 0, sizeof(client));
client_length = sizeof(client);
if(recvfrom(server_fd, buff, sizeof(packet_t), 0,(struct sockaddr *) & client, &client_length) != -1){
memcpy(& pk, buff, sizeof(packet_t));
swap_packet_byte_order(& pk);
memset(source_ip_port,0, 22);
sprintf(source_ip_port, "%s:%hu", inet_ntoa(client.sin_addr), ntohs(client.sin_port));
write_data(pk.accumulated_time, pk.in_time, pk.id, source_ip_port, pk.samples);
}
else{
log(E, "##Fatal error: recvfrom returned without any packet arrival\n");
exit(-1);
}
}
}
void send_packet(socket_list *destination_sockets){
packet_t anything;
printf("Sampling at %d samples per second.\n", samples_per_second);
usleep_time = (unsigned int) 1000000 / samples_per_second;
while(npackets > 0){
memset(&anything, 0, sizeof(anything));
init_packet(&anything);
swap_packet_byte_order(&anything);
send_to_all(anything, destination_sockets);
npackets--;
usleep(usleep_time); //DO NOT REMOVE THIS!!!!
}
printf("All generated packets were sent.\n");
pthread_exit(0);
}