diff options
Diffstat (limited to 'src/tools/oping/oping_client.c')
| -rw-r--r-- | src/tools/oping/oping_client.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/tools/oping/oping_client.c b/src/tools/oping/oping_client.c new file mode 100644 index 00000000..23a57549 --- /dev/null +++ b/src/tools/oping/oping_client.c @@ -0,0 +1,234 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Ouroboros ping application + * + * Dimitri Staessens <dimitri.staessens@intec.ugent.be> + * Sander Vrijders <sander.vrijders@intec.ugent.be> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <ouroboros/dev.h> +#include <ouroboros/errno.h> +#include <ouroboros/time_utils.h> + +#ifdef __FreeBSD__ +#define __XSI_VISIBLE 500 +#endif + +#include <signal.h> +#include <stdlib.h> +#include <sys/time.h> +#include <arpa/inet.h> +#include <math.h> +#include <float.h> + +void shutdown_client(int signo, siginfo_t * info, void * c) +{ + switch(signo) { + case SIGINT: + case SIGTERM: + case SIGHUP: + pthread_cancel(client.reader_pt); + pthread_cancel(client.writer_pt); + default: + return; + } +} + +void * reader(void * o) +{ + struct timespec timeout = {2, 0}; + struct timespec now = {0, 0}; + + struct oping_msg * msg; + char buf[OPING_BUF_SIZE]; + int fd = 0; + int msg_len = 0; + float ms = 0; + float d = 0; + + msg = (struct oping_msg *) buf; + + /* FIXME: use flow timeout option once we have it */ + while(client.rcvd != client.count && + (fd = flow_select(&timeout)) != -ETIMEDOUT) { + flow_cntl(fd, FLOW_F_SETFL, FLOW_O_NONBLOCK); + while (!((msg_len = flow_read(fd, buf, OPING_BUF_SIZE)) < 0)) { + if (msg_len < 0) + continue; + + if (ntohl(msg->type) != ECHO_REPLY) { + printf("Invalid message received (%d).\n", + msg->type); + continue; + } + + if (ntohl(msg->id) >= client.count) { + printf("Invalid id.\n"); + continue; + } + + ++client.rcvd; + + clock_gettime(CLOCK_REALTIME, &now); + + pthread_mutex_lock(&client.lock); + ms = ts_diff_us(&client.times[ntohl(msg->id)], &now) + /1000.0; + pthread_mutex_unlock(&client.lock); + + printf("%d bytes from %s: seq=%d time=%.3f ms\n", + msg_len, + client.s_apn, + ntohl(msg->id), + ms); + + if (ms < client.rtt_min) + client.rtt_min = ms; + if (ms > client.rtt_max) + client.rtt_max = ms; + + d = (ms - client.rtt_avg); + client.rtt_avg += d / (float) client.rcvd; + client.rtt_m2 += d * (ms - client.rtt_avg); + } + } + + return (void *) 0; +} + +void * writer(void * o) +{ + int * fdp = (int *) o; + struct timespec now; + struct timespec wait = {client.interval / 1000, client.interval % 1000}; + struct oping_msg * msg; + char * buf = malloc(client.size); + + if (buf == NULL) + return (void *) -ENOMEM; + + if (fdp == NULL) + return (void *) -EINVAL; + + memset(buf, 0, client.size); + + msg = (struct oping_msg *) buf; + + printf("Pinging %s with %d bytes of data:\n\n", + client.s_apn, client.size); + + while (client.sent < client.count) { + nanosleep(&wait, NULL); + msg->id = htonl(client.sent); + if (flow_write(*fdp, buf, client.size) == -1) { + printf("Failed to send SDU.\n"); + flow_dealloc(*fdp); + return (void *) -1; + } + + clock_gettime(CLOCK_REALTIME, &now); + + pthread_mutex_lock(&client.lock); + client.times[client.sent++] = now; + pthread_mutex_unlock(&client.lock); + } + + return (void *) 0; +} + +int client_main() +{ + struct sigaction sig_act; + + struct timespec tic; + struct timespec toc; + + int fd = flow_alloc(client.s_apn, NULL, NULL); + if (fd < 0) { + printf("Failed to allocate flow.\n"); + return -1; + } + + if (flow_alloc_res(fd)) { + printf("Flow allocation refused.\n"); + flow_dealloc(fd); + return -1; + } + + memset(&sig_act, 0, sizeof sig_act); + sig_act.sa_sigaction = &shutdown_client; + sig_act.sa_flags = 0; + + if (sigaction(SIGINT, &sig_act, NULL) || + sigaction(SIGTERM, &sig_act, NULL) || + sigaction(SIGHUP, &sig_act, NULL) || + sigaction(SIGPIPE, &sig_act, NULL)) { + printf("Failed to install sighandler.\n"); + return -1; + } + + pthread_mutex_init(&client.lock, NULL); + pthread_mutex_lock(&client.lock); + client.sent = 0; + client.rcvd = 0; + client.rtt_min = FLT_MAX; + client.rtt_max = 0; + client.rtt_avg = 0; + client.rtt_m2 = 0; + client.times = malloc(sizeof(struct timespec) * client.count); + if (client.times == NULL) { + pthread_mutex_unlock(&client.lock); + return -ENOMEM; + } + + pthread_mutex_unlock(&client.lock); + + clock_gettime(CLOCK_REALTIME, &tic); + + pthread_create(&client.reader_pt, NULL, reader, NULL); + pthread_create(&client.writer_pt, NULL, writer, &fd); + + pthread_join(client.writer_pt, NULL); + pthread_join(client.reader_pt, NULL); + + clock_gettime(CLOCK_REALTIME, &toc); + + printf("\n"); + printf("--- %s ping statistics ---\n", client.s_apn); + printf("%d SDU's transmitted, ", client.sent); + printf("%d received, ", client.rcvd); + printf("%d%% packet loss, ", 100 - ((100 * client.rcvd) / client.sent)); + printf("time: %.3f ms\n", ts_diff_us(&tic, &toc) / 1000.0); + printf("rtt min/avg/max/mdev = %.3f/%.3f/%.3f/", + client.rtt_min, + client.rtt_avg, + client.rtt_max); + client.rcvd > 1 ? + printf("%.3f ms\n", + sqrt(client.rtt_m2 / (float) (client.rcvd - 1))) : + printf("Nan ms\n"); + + pthread_mutex_lock(&client.lock); + free(client.times); + pthread_mutex_unlock(&client.lock); + pthread_mutex_destroy(&client.lock); + + flow_dealloc(fd); + + return 0; +} |