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osmo-msc/openbsc/tests/mgcp/mgcp_test.c

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/*
* (C) 2011-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2011-2012 by On-Waves
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <openbsc/mgcp.h>
#include <openbsc/mgcp_internal.h>
#include <osmocom/core/application.h>
#include <osmocom/core/talloc.h>
#include <string.h>
#include <limits.h>
#define AUEP1 "AUEP 158663169 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n"
#define AUEP1_RET "200 158663169 OK\r\n"
#define AUEP2 "AUEP 18983213 ds/e1-2/1@172.16.6.66 MGCP 1.0\r\n"
#define AUEP2_RET "500 18983213 FAIL\r\n"
#define EMPTY "\r\n"
#define EMPTY_RET NULL
#define SHORT "CRCX \r\n"
#define SHORT_RET "510 000000 FAIL\r\n"
#define MDCX_WRONG_EP "MDCX 18983213 ds/e1-3/1@172.16.6.66 MGCP 1.0\r\n"
#define MDCX_ERR_RET "510 18983213 FAIL\r\n"
#define MDCX_UNALLOCATED "MDCX 18983214 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n"
#define MDCX_RET "400 18983214 FAIL\r\n"
#define MDCX3 "MDCX 18983215 1@mgw MGCP 1.0\r\n"
#define MDCX3_RET "200 18983215 OK\r\n" \
"I: 1\n" \
"\n" \
"v=0\r\n" \
"o=- 1 23 IN IP4 0.0.0.0\r\n" \
"c=IN IP4 0.0.0.0\r\n" \
"t=0 0\r\n" \
"m=audio 0 RTP/AVP 126\r\n" \
"a=rtpmap:126 AMR/8000\r\n"
#define SHORT2 "CRCX 1"
#define SHORT2_RET "510 000000 FAIL\r\n"
#define SHORT3 "CRCX 1 1@mgw"
#define SHORT4 "CRCX 1 1@mgw MGCP"
#define SHORT5 "CRCX 1 1@mgw MGCP 1.0"
#define CRCX "CRCX 2 1@mgw MGCP 1.0\r\n" \
"M: sendrecv\r\n" \
"C: 2\r\n" \
"\r\n" \
"v=0\r\n" \
"c=IN IP4 123.12.12.123\r\n" \
"m=audio 5904 RTP/AVP 97\r\n" \
"a=rtpmap:97 GSM-EFR/8000\r\n"
#define CRCX_RET "200 2 OK\r\n" \
"I: 1\n" \
"\n" \
"v=0\r\n" \
"o=- 1 23 IN IP4 0.0.0.0\r\n" \
"c=IN IP4 0.0.0.0\r\n" \
"t=0 0\r\n" \
"m=audio 0 RTP/AVP 126\r\n" \
"a=rtpmap:126 AMR/8000\r\n"
#define CRCX_ZYN "CRCX 2 1@mgw MGCP 1.0\r" \
"M: sendrecv\r" \
"C: 2\r\r" \
"v=0\r" \
"c=IN IP4 123.12.12.123\r" \
"m=audio 5904 RTP/AVP 97\r" \
"a=rtpmap:97 GSM-EFR/8000\r"
#define CRCX_ZYN_RET "200 2 OK\r\n" \
"I: 2\n" \
"\n" \
"v=0\r\n" \
"o=- 2 23 IN IP4 0.0.0.0\r\n" \
"c=IN IP4 0.0.0.0\r\n" \
"t=0 0\r\n" \
"m=audio 0 RTP/AVP 126\r\n" \
"a=rtpmap:126 AMR/8000\r\n"
#define DLCX "DLCX 7 1@mgw MGCP 1.0\r\n" \
"C: 2\r\n"
#define DLCX_RET "250 7 OK\r\n" \
"P: PS=0, OS=0, PR=0, OR=0, PL=0, JI=0\r\n"
#define RQNT "RQNT 186908780 1@mgw MGCP 1.0\r\n" \
"X: B244F267488\r\n" \
"S: D/9\r\n"
#define RQNT2 "RQNT 186908781 1@mgw MGCP 1.0\r\n" \
"X: ADD4F26746F\r\n" \
"R: D/[0-9#*](N), G/ft, fxr/t38\r\n"
#define RQNT1_RET "200 186908780 OK\r\n"
#define RQNT2_RET "200 186908781 OK\r\n"
struct mgcp_test {
const char *name;
const char *req;
const char *exp_resp;
};
static const struct mgcp_test tests[] = {
{ "AUEP1", AUEP1, AUEP1_RET },
{ "AUEP2", AUEP2, AUEP2_RET },
{ "MDCX1", MDCX_WRONG_EP, MDCX_ERR_RET },
{ "MDCX2", MDCX_UNALLOCATED, MDCX_RET },
{ "CRCX", CRCX, CRCX_RET },
{ "MDCX3", MDCX3, MDCX3_RET },
{ "DLCX", DLCX, DLCX_RET },
{ "CRCX_ZYN", CRCX_ZYN, CRCX_ZYN_RET },
{ "EMPTY", EMPTY, EMPTY_RET },
{ "SHORT1", SHORT, SHORT_RET },
{ "SHORT2", SHORT2, SHORT2_RET },
{ "SHORT3", SHORT3, SHORT2_RET },
{ "SHORT4", SHORT4, SHORT2_RET },
{ "RQNT1", RQNT, RQNT1_RET },
{ "RQNT2", RQNT2, RQNT2_RET },
{ "DLCX", DLCX, DLCX_RET },
};
static const struct mgcp_test retransmit[] = {
{ "CRCX", CRCX, CRCX_RET },
{ "RQNT1", RQNT, RQNT1_RET },
{ "RQNT2", RQNT2, RQNT2_RET },
{ "MDCX3", MDCX3, MDCX3_RET },
{ "DLCX", DLCX, DLCX_RET },
};
static struct msgb *create_msg(const char *str)
{
struct msgb *msg;
msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
int len = sprintf((char *)msg->data, str);
msg->l2h = msgb_put(msg, len);
return msg;
}
static void test_messages(void)
{
struct mgcp_config *cfg;
int i;
cfg = mgcp_config_alloc();
cfg->trunk.number_endpoints = 64;
mgcp_endpoints_allocate(&cfg->trunk);
mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
for (i = 0; i < ARRAY_SIZE(tests); i++) {
const struct mgcp_test *t = &tests[i];
struct msgb *inp;
struct msgb *msg;
printf("Testing %s\n", t->name);
inp = create_msg(t->req);
msg = mgcp_handle_message(cfg, inp);
msgb_free(inp);
if (!t->exp_resp) {
if (msg)
printf("%s failed '%s'\n", t->name, (char *) msg->data);
} else if (strcmp((char *) msg->data, t->exp_resp) != 0)
printf("%s failed '%s'\n", t->name, (char *) msg->data);
msgb_free(msg);
}
talloc_free(cfg);
}
static void test_retransmission(void)
{
struct mgcp_config *cfg;
int i;
cfg = mgcp_config_alloc();
cfg->trunk.number_endpoints = 64;
mgcp_endpoints_allocate(&cfg->trunk);
mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
for (i = 0; i < ARRAY_SIZE(retransmit); i++) {
const struct mgcp_test *t = &retransmit[i];
struct msgb *inp;
struct msgb *msg;
printf("Testing %s\n", t->name);
inp = create_msg(t->req);
msg = mgcp_handle_message(cfg, inp);
msgb_free(inp);
if (strcmp((char *) msg->data, t->exp_resp) != 0)
printf("%s failed '%s'\n", t->name, (char *) msg->data);
msgb_free(msg);
/* Retransmit... */
printf("Re-transmitting %s\n", t->name);
inp = create_msg(t->req);
msg = mgcp_handle_message(cfg, inp);
msgb_free(inp);
if (strcmp((char *) msg->data, t->exp_resp) != 0)
printf("%s failed '%s'\n", t->name, (char *) msg->data);
msgb_free(msg);
}
talloc_free(cfg);
}
static int rqnt_cb(struct mgcp_endpoint *endp, char _tone)
{
ptrdiff_t tone = _tone;
endp->cfg->data = (void *) tone;
return 0;
}
static void test_rqnt_cb(void)
{
struct mgcp_config *cfg;
struct msgb *inp, *msg;
cfg = mgcp_config_alloc();
cfg->rqnt_cb = rqnt_cb;
cfg->trunk.number_endpoints = 64;
mgcp_endpoints_allocate(&cfg->trunk);
mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
inp = create_msg(CRCX);
msgb_free(mgcp_handle_message(cfg, inp));
msgb_free(inp);
/* send the RQNT and check for the CB */
inp = create_msg(RQNT);
msg = mgcp_handle_message(cfg, inp);
if (strncmp((const char *) msg->l2h, "200", 3) != 0) {
printf("FAILED: message is not 200. '%s'\n", msg->l2h);
abort();
}
if (cfg->data != (void *) '9') {
printf("FAILED: callback not called: %p\n", cfg->data);
abort();
}
msgb_free(msg);
msgb_free(inp);
inp = create_msg(DLCX);
msgb_free(mgcp_handle_message(cfg, inp));
msgb_free(inp);
talloc_free(cfg);
}
struct pl_test {
int cycles;
uint16_t base_seq;
uint16_t max_seq;
uint32_t packets;
uint32_t expected;
int loss;
};
static const struct pl_test pl_test_dat[] = {
/* basic.. just one package */
{ .cycles = 0, .base_seq = 0, .max_seq = 0, .packets = 1, .expected = 1, .loss = 0},
/* some packages and a bit of loss */
{ .cycles = 0, .base_seq = 0, .max_seq = 100, .packets = 100, .expected = 101, .loss = 1},
/* wrap around */
{ .cycles = 1<<16, .base_seq = 0xffff, .max_seq = 2, .packets = 4, .expected = 4, .loss = 0},
/* min loss */
{ .cycles = 0, .base_seq = 0, .max_seq = 0, .packets = UINT_MAX, .expected = 1, .loss = INT_MIN },
/* max loss, with wrap around on expected max */
{ .cycles = INT_MAX, .base_seq = 0, .max_seq = UINT16_MAX, .packets = 0, .expected = ((uint32_t)(INT_MAX) + UINT16_MAX + 1), .loss = INT_MAX },
};
static void test_packet_loss_calc(void)
{
int i;
printf("Testing packet loss calculation.\n");
for (i = 0; i < ARRAY_SIZE(pl_test_dat); ++i) {
uint32_t expected;
int loss;
struct mgcp_rtp_state state;
struct mgcp_rtp_end rtp;
memset(&state, 0, sizeof(state));
memset(&rtp, 0, sizeof(rtp));
state.initialized = 1;
state.base_seq = pl_test_dat[i].base_seq;
state.max_seq = pl_test_dat[i].max_seq;
state.cycles = pl_test_dat[i].cycles;
rtp.packets = pl_test_dat[i].packets;
mgcp_state_calc_loss(&state, &rtp, &expected, &loss);
if (loss != pl_test_dat[i].loss || expected != pl_test_dat[i].expected) {
printf("FAIL: Wrong exp/loss at idx(%d) Loss(%d vs. %d) Exp(%u vs. %u)\n",
i, loss, pl_test_dat[i].loss,
expected, pl_test_dat[i].expected);
}
}
}
static void test_mgcp_stats(void)
{
printf("Testing stat parsing\n");
uint32_t bps, bos, pr, _or, jitter;
struct msgb *msg;
int loss;
int rc;
msg = create_msg(DLCX_RET);
rc = mgcp_parse_stats(msg, &bps, &bos, &pr, &_or, &loss, &jitter);
printf("Parsing result: %d\n", rc);
if (bps != 0 || bos != 0 || pr != 0 || _or != 0 || loss != 0 || jitter != 0)
printf("FAIL: Parsing failed1.\n");
msgb_free(msg);
msg = create_msg("250 7 OK\r\nP: PS=10, OS=20, PR=30, OR=40, PL=-3, JI=40\r\n");
rc = mgcp_parse_stats(msg, &bps, &bos, &pr, &_or, &loss, &jitter);
printf("Parsing result: %d\n", rc);
if (bps != 10 || bos != 20 || pr != 30 || _or != 40 || loss != -3 || jitter != 40)
printf("FAIL: Parsing failed2.\n");
msgb_free(msg);
}
int main(int argc, char **argv)
{
osmo_init_logging(&log_info);
test_messages();
test_retransmission();
test_packet_loss_calc();
test_rqnt_cb();
test_mgcp_stats();
printf("Done\n");
return EXIT_SUCCESS;
}
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