void sendtoErr_setup(double error_rate)
{
sendtoErr_init(error_rate, DROP_ON, FLIP_ON, DEBUG_ON, RSEED_OFF);
}
int main (int argc, char *argv[])
{
int32_t select_count = 0;
int32_t buf_size = 0;
int32_t window_size = 0;
int32_t data_file = 0;
int32_t packet_len = 0;
int32_t seq_num = START_SEQ_NUM;
uint8_t packet[MAX_LEN];
STATE state = FILENAME;
check_args(argc, argv, &buf_size, &window_size);
sendtoErr_init(atof(argv[4]), DROP_ON, FLIP_ON, DEBUG_ON, RSEED_ON);
//check if local file exists
if ((data_file = open(argv[1], O_RDONLY)) < 0)
{
printf("File %s does not exist\n", argv[1]);
state = DONE;
}
while (state != DONE)
{
switch (state)
{
case FILENAME:
/* Everytime we try to start/restart a connection get a new socket */
if (udp_client_setup(argv[6], atoi(argv[7]), &server) < 0)
exit(-1);
state = filename(argv[2], buf_size);
/*if no response from server then repeat sending filename (close socket) so you can open another */
if (state == FILENAME)
close(server.sk_num);
select_count++;
if (select_count > 9)
{
printf("Server unreachable, client terminating\n");
state = DONE;
}
break;
case FILE_OK:
select_count = 0;
/*
if ((output_file = open(argv[2], O_CREAT | O_TRUNC | O_WRONLY, 0600)) < 0)
{
perror("File open");
state = DONE;
}
else
state = RECV_DATA;
*/
case SEND_DATA:
state = send_data(packet, &packet_len, data_file, buf_size, &seq_num);
break;
case DONE:
break;
case WAIT_ON_ACK:
state = wait_on_ack();
break;
case TIMEOUT_ON_ACK:
state = timeout_on_ack(packet, packet_len);
break;
default:
printf("ERROR - in default state\n");
state = DONE;
break;
}
}
return 0;
}
