void start_connection(){
// initialization require for conestion control
// intialize the starting cwnd
// cwnd = 1;
// prev_cwnd = cwnd;
// ssthreshold = MAX_SEQ_N/2;
//intializing valid_timer
timer_n_index = cwnd;
itimer.it_interval = timeout_tv;
itimer.it_value = timeout_tv;
int i;
for(i=0; i < MAX_SEQ_N; i++)
timers_status[i] = -1;
open_file(file_name);
if (file == NULL){ // can't open file
filesize = -1;
hand_shake();
}else {
filesize = calc_file_size();
hand_shake();
rdt();
}
printf("operation [completed]\n");
}
static int confirm_if_3332()
{
int ret;
power_on_3332();
ret = hand_shake();
power_off_3332();
return ret;
}
