git.ozlabs.org Git - ccan/blob - ccan/io/test/run-15-timeout.c

   1 #include <ccan/io/io.h>
   2 /* Include the C files directly. */
   3 #include <ccan/io/poll.c>
   4 #include <ccan/io/io.c>
   5 #include <ccan/tap/tap.h>
   6 #include <ccan/time/time.h>
   7 #include <sys/wait.h>
   8 #include <stdio.h>
   9 #include <unistd.h>
  10
  11 #define PORT "65015"
  12
  13 struct data {
  14         struct timers timers;
  15         int state;
  16         struct io_conn *conn;
  17         struct timer timer;
  18         int timeout_usec;
  19         char buf[4];
  20 };
  21
  22 static void finish_ok(struct io_conn *conn, struct data *d)
  23 {
  24         d->state++;
  25         io_break(d);
  26 }
  27
  28 static struct io_plan *no_timeout(struct io_conn *conn, struct data *d)
  29 {
  30         ok1(d->state == 1);
  31         d->state++;
  32         return io_close(conn);
  33 }
  34
  35 static struct io_plan *init_conn(struct io_conn *conn, struct data *d)
  36 {
  37         ok1(d->state == 0);
  38         d->state++;
  39
  40         d->conn = conn;
  41         io_set_finish(conn, finish_ok, d);
  42
  43         timer_addrel(&d->timers, &d->timer, time_from_usec(d->timeout_usec));
  44
  45         return io_read(conn, d->buf, sizeof(d->buf), no_timeout, d);
  46 }
  47
  48 static int make_listen_fd(const char *port, struct addrinfo **info)
  49 {
  50         int fd, on = 1;
  51         struct addrinfo *addrinfo, hints;
  52
  53         memset(&hints, 0, sizeof(hints));
  54         hints.ai_family = AF_UNSPEC;
  55         hints.ai_socktype = SOCK_STREAM;
  56         hints.ai_flags = AI_PASSIVE;
  57         hints.ai_protocol = 0;
  58
  59         if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
  60                 return -1;
  61
  62         fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
  63                     addrinfo->ai_protocol);
  64         if (fd < 0)
  65                 return -1;
  66
  67         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
  68         if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
  69                 close(fd);
  70                 return -1;
  71         }
  72         if (listen(fd, 1) != 0) {
  73                 close(fd);
  74                 return -1;
  75         }
  76         *info = addrinfo;
  77         return fd;
  78 }
  79
  80 int main(void)
  81 {
  82         struct data *d = malloc(sizeof(*d));
  83         struct addrinfo *addrinfo;
  84         struct io_listener *l;
  85         struct timer *expired;
  86         int fd, status;
  87
  88         /* This is how many tests you plan to run */
  89         plan_tests(21);
  90         d->state = 0;
  91         d->timeout_usec = 100000;
  92         timers_init(&d->timers, time_mono());
  93         timer_init(&d->timer);
  94         fd = make_listen_fd(PORT, &addrinfo);
  95         ok1(fd >= 0);
  96         l = io_new_listener(NULL, fd, init_conn, d);
  97         ok1(l);
  98         fflush(stdout);
  99
 100         if (!fork()) {
 101                 int i;
 102
 103                 io_close_listener(l);
 104                 fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
 105                             addrinfo->ai_protocol);
 106                 if (fd < 0)
 107                         exit(1);
 108                 if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
 109                         exit(2);
 110                 signal(SIGPIPE, SIG_IGN);
 111                 usleep(500000);
 112                 for (i = 0; i < strlen("hellothere"); i++) {
 113                         if (write(fd, "hellothere" + i, 1) != 1)
 114                                 break;
 115                 }
 116                 close(fd);
 117                 freeaddrinfo(addrinfo);
 118                 timers_cleanup(&d->timers);
 119                 free(d);
 120                 exit(i);
 121         }
 122         ok1(io_loop(&d->timers, &expired) == NULL);
 123
 124         /* One element, d->timer. */
 125         ok1(expired == &d->timer);
 126         ok1(!timers_expire(&d->timers, time_mono()));
 127         ok1(d->state == 1);
 128
 129         io_close(d->conn);
 130
 131         /* Finished will be called, d will be returned */
 132         ok1(io_loop(&d->timers, &expired) == d);
 133         ok1(expired == NULL);
 134         ok1(d->state == 2);
 135
 136         /* It should have died. */
 137         ok1(wait(&status));
 138         ok1(WIFEXITED(status));
 139         ok1(WEXITSTATUS(status) < sizeof(d->buf));
 140
 141         /* This one shouldn't time out. */
 142         d->state = 0;
 143         d->timeout_usec = 500000;
 144         fflush(stdout);
 145
 146         if (!fork()) {
 147                 int i;
 148
 149                 io_close_listener(l);
 150                 fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
 151                             addrinfo->ai_protocol);
 152                 if (fd < 0)
 153                         exit(1);
 154                 if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
 155                         exit(2);
 156                 signal(SIGPIPE, SIG_IGN);
 157                 usleep(100000);
 158                 for (i = 0; i < strlen("hellothere"); i++) {
 159                         if (write(fd, "hellothere" + i, 1) != 1)
 160                                 break;
 161                 }
 162                 close(fd);
 163                 freeaddrinfo(addrinfo);
 164                 timers_cleanup(&d->timers);
 165                 free(d);
 166                 exit(i);
 167         }
 168         ok1(io_loop(&d->timers, &expired) == d);
 169         ok1(d->state == 3);
 170         ok1(expired == NULL);
 171         ok1(wait(&status));
 172         ok1(WIFEXITED(status));
 173         ok1(WEXITSTATUS(status) >= sizeof(d->buf));
 174
 175         io_close_listener(l);
 176         freeaddrinfo(addrinfo);
 177         timers_cleanup(&d->timers);
 178         free(d);
 179
 180         /* This exits depending on whether all tests passed */
 181         return exit_status();
 182 }