int main(int argc, char **argv){
if(argc < 4){
printf("Syntax Error\n");
printf("usage:\n\tmobilereminderd filename port secret\n");
exit(-1);
}
// initialize globals
number_of_reminders = 0;
next_reminder = 0;
struct sigaction sigact;
sigact.sa_handler = &reminder_handler;
sigact.sa_flags = SA_RESTART;
sigfillset(&sigact.sa_mask);
if(sigaction(SIGALRM, &sigact, NULL) == -1){
printf("Error setting signal handler\n");
exit(-1);
}
global_port = DEFAULT_PORT;
sscanf(argv[2], "%d", &global_port);
secret_len = (int) strlen(argv[3]);
strncpy(secret, argv[3], PAYLOAD_SIZE);
read_reminders(argv[1]);
alarm(alarm_times[0]);
//listen for client registration
mylisten(global_port, &myloop_condition, &mypacket_handler);
}
int main(int argc, char **argv){
if(argc < 2){
printf("Syntax Error\n");
printf("usage:\n\tmpying ip-address port\n");
exit(-1);
}
//set globals
loop = 1;
global_port = DEFAULT_PORT;
sscanf(argv[2], "%d", &global_port);
gettimeofday(&before, NULL);
char* buf = "oym8";
send_buffer(argv[1], global_port, buf, 4, EMPTY_FLAG);
mylisten(global_port, &myloop_condition, &mypacket_handler);
}
int main(int argc, char **argv){
if(argc < 2){
printf("Syntax Error\n");
printf("usage:\n\tmypingd port\n");
exit(-1);
}
struct sigaction sigact;
sigact.sa_handler = &zombie_handler;
sigact.sa_flags = SA_RESTART | SA_NOCLDSTOP;
sigfillset(&sigact.sa_mask);
if(sigaction(SIGCHLD, &sigact, NULL) == -1){
printf("Error setting signal handler\n");
exit(-1);
}
global_port = DEFAULT_PORT;
sscanf(argv[1], "%d", &global_port);
mylisten(global_port, &myloop_condition, &mypacket_handler);
}
int
main(int argc, char *argv[])
{
struct sockaddr_in sin;
mysocket_t bindsd;
int len, opt, errflg = 0;
char localname[256];
/* Parse the command line */
while ((opt = getopt(argc, argv, "")) != EOF)
{
switch (opt)
{
case '?':
++errflg;
break;
}
}
if (errflg || optind != argc)
{
fprintf(stderr, usage, argv[0]);
exit(EXIT_FAILURE);
}
/* open connection on any available port */
if ((bindsd = mysocket()) < 0)
{
perror("mysocket");
exit(EXIT_FAILURE);
}
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_ANY);
sin.sin_port = htons(0);
len = sizeof(struct sockaddr_in);
if (mybind(bindsd, (struct sockaddr *) &sin, len) < 0)
{
perror("mybind");
exit(EXIT_FAILURE);
}
if (mylisten(bindsd, 5) < 0)
{
perror("mylisten");
exit(EXIT_FAILURE);
}
if (local_name(bindsd, localname) < 0)
{
perror("local_name");
exit(EXIT_FAILURE);
}
fprintf(stderr, "Server's address is %s\n", localname);
fflush(stderr);
for (;;)
{
mysocket_t sd;
/* just keep accepting connections forever */
if ((sd = myaccept(bindsd, (struct sockaddr *) &sin, &len)) < 0)
{
perror("myaccept");
exit(EXIT_FAILURE);
}
assert(sin.sin_family == AF_INET);
fprintf(stderr, "connected to %s at port %u\n",
inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
do_connection(sd);
} /* end for(;;) */
if (myclose(bindsd) < 0)
perror("myclose (bindsd)");
return 0;
}
