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/*
* (C) 2013 by Pablo Neira Ayuso <pablo@gnumonks.org>
* (C) 2013 by On Waves ehf <http://www.on-waves.com>
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <signal.h>
#include <arpa/inet.h>
#include <sys/time.h>
#include <osmocom/core/select.h>
#include <osmocom/core/application.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/netif/osmux.h>
#include <osmocom/netif/rtp.h>
#define DOSMUX_TEST 0
struct log_info_cat osmux_test_cat[] = {
[DOSMUX_TEST] = {
.name = "DOSMUX_TEST",
.description = "osmux test",
.color = "\033[1;35m",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
};
const struct log_info osmux_test_log_info = {
.filter_fn = NULL,
.cat = osmux_test_cat,
.num_cat = ARRAY_SIZE(osmux_test_cat),
};
/* RTP packet with AMR payload */
static uint8_t rtp_pkt[] = {
0x80, 0x62, 0x3f, 0xcc, 0x00, 0x01, 0xa7, 0x6f, /* RTP */
0x07, 0x09, 0x00, 0x62, 0x20, 0x14, 0xff, 0xd4, /* AMR */
0xf9, 0xff, 0xfb, 0xe7, 0xeb, 0xf9, 0x9f, 0xf8,
0xf2, 0x26, 0x33, 0x65, 0x54,
};
static int rtp_pkts;
static struct timeval last;
static void tx_cb(struct msgb *msg, void *data)
{
char buf[4096];
struct timeval now, diff;
gettimeofday(&now, NULL);
timersub(&now, &last, &diff);
last = now;
if (diff.tv_usec > 2*17000) {
fprintf(stdout, "lagging to deliver reconstructed RTP\n");
exit(EXIT_FAILURE);
}
osmo_rtp_snprintf(buf, sizeof(buf), msg);
fprintf(stderr, "extracted packet: %s\n", buf);
if (memcmp(msg->data + sizeof(struct rtp_hdr),
rtp_pkt + sizeof(struct rtp_hdr),
sizeof(rtp_pkt) - sizeof(struct rtp_hdr)) != 0) {
fprintf(stdout, "payload mismatch!\n");
exit(EXIT_FAILURE);
}
rtp_pkts--;
}
static struct osmux_out_handle h_output;
static void osmux_deliver(struct msgb *batch_msg, void *data)
{
char buf[1024];
struct osmux_hdr *osmuxh;
LLIST_HEAD(list);
osmux_snprintf(buf, sizeof(buf), batch_msg);
fprintf(stderr, "OSMUX message (len=%d) %s\n", batch_msg->len, buf);
/* For each OSMUX message, extract the RTP messages and put them
* in a list. Then, reconstruct transmission timing.
*/
while((osmuxh = osmux_xfrm_output_pull(batch_msg)) != NULL) {
osmux_xfrm_output(osmuxh, &h_output, &list);
osmux_tx_sched(&list, tx_cb, NULL);
}
}
struct osmux_in_handle h_input = {
.osmux_seq = 0, /* sequence number to start OSmux message from */
.batch_factor = 4, /* batch up to 4 RTP messages */
.deliver = osmux_deliver,
};
static void sigalarm_handler(int foo)
{
printf("FAIL: test did not run successfully\n");
exit(EXIT_FAILURE);
}
static void osmux_test_loop(int ccid)
{
struct msgb *msg;
char buf[1024];
struct rtp_hdr *rtph = (struct rtp_hdr *)rtp_pkt;
uint16_t seq;
int i, j, k = 0;
for (i = 1; i < 64; i++) {
msg = msgb_alloc(1500, "test");
if (!msg)
exit(EXIT_FAILURE);
memcpy(msg->data, rtp_pkt, sizeof(rtp_pkt));
msgb_put(msg, sizeof(rtp_pkt));
seq = ntohs(rtph->sequence);
seq++;
rtph->sequence = htons(seq);
osmo_rtp_snprintf(buf, sizeof(buf), msg);
fprintf(stderr, "adding to ccid=%u %s\n", (i % 2) + ccid, buf);
rtp_pkts++;
k++;
/* Fan out RTP packets between two circuit IDs to test
* multi-batch support. Mind that this approach implicitly add
* gaps between two messages to test the osmux replaying
* feature.
*/
osmux_xfrm_input(&h_input, msg, (i % 2) + ccid);
if (i % 4 == 0) {
gettimeofday(&last, NULL);
/* After four RTP messages, squash them into the OSMUX
* batch and call the routine to deliver it.
*/
osmux_xfrm_input_deliver(&h_input);
/* The first two RTP message (one per circuit ID batch)
* are delivered immediately, wait until the three RTP
* messages that are extracted from OSMUX has been
* delivered.
*/
for (j = 0; j < k-2; j++)
osmo_select_main(0);
k = 0;
}
}
}
int main(void)
{
int i;
if (signal(SIGALRM, sigalarm_handler) == SIG_ERR) {
perror("signal");
exit(EXIT_FAILURE);
}
/* This test doesn't use it, but osmux requires it internally. */
osmo_init_logging(&osmux_test_log_info);
log_set_log_level(osmo_stderr_target, LOGL_DEBUG);
osmux_xfrm_input_init(&h_input);
osmux_xfrm_output_init(&h_output, 0x7000000);
/* If the test takes longer than 10 seconds, abort it */
alarm(10);
for (i = 0; i < 2; i++)
osmux_xfrm_input_open_circuit(&h_input, i, 0);
/* Add two circuits with dummy padding */
osmux_xfrm_input_open_circuit(&h_input, 2, 1);
osmux_xfrm_input_open_circuit(&h_input, 3, 1);
/* Wait 10 times to make sure dummy padding timer works fine */
for (i = 0; i < 10; i++)
osmo_select_main(0);
/* Start pushing voice data to circuits 0 and 1 */
osmux_test_loop(0);
/* ... now start pushing voice data to circuits 2 and 3. This circuits
* comes with dummy padding enabled.
*/
osmux_test_loop(2);
for (i = 0; i < 4; i++)
osmux_xfrm_input_close_circuit(&h_input, i);
/* Reopen with two circuits and retest */
osmux_xfrm_input_open_circuit(&h_input, 0, 0);
osmux_xfrm_input_open_circuit(&h_input, 1, 1);
osmux_test_loop(0);
osmux_xfrm_input_close_circuit(&h_input, 0);
osmux_xfrm_input_close_circuit(&h_input, 1);
osmux_xfrm_input_fini(&h_input);
fprintf(stdout, "OK: Test passed\n");
return EXIT_SUCCESS;
}
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