/*
 * (C) 2011-2012,2014 by Holger Hans Peter Freyther <zecke@selfish.org>
 * (C) 2011-2012,2014 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/>.
 */
#undef _GNU_SOURCE
#define _GNU_SOURCE

#include <osmocom/mgcp/mgcp.h>
#include <osmocom/mgcp/vty.h>
#include <osmocom/mgcp/mgcp_common.h>
#include <osmocom/mgcp/mgcp_internal.h>
#include <osmocom/mgcp/mgcp_stat.h>
#include <osmocom/mgcp/mgcp_msg.h>
#include <osmocom/mgcp/mgcp_ep.h>

#include <osmocom/core/application.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <string.h>
#include <limits.h>
#include <dlfcn.h>
#include <time.h>
#include <math.h>

char *strline_r(char *str, char **saveptr);

const char *strline_test_data =
    "one CR\r"
    "two CR\r"
    "\r"
    "one CRLF\r\n"
    "two CRLF\r\n"
    "\r\n" "one LF\n" "two LF\n" "\n" "mixed (4 lines)\r\r\n\n\r\n";

#define EXPECTED_NUMBER_OF_LINES 13

static void test_strline(void)
{
	char *save = NULL;
	char *line;
	char buf[2048];
	int counter = 0;

	osmo_strlcpy(buf, strline_test_data, sizeof(buf));

	for (line = mgcp_strline(buf, &save); line;
	     line = mgcp_strline(NULL, &save)) {
		printf("line: '%s'\n", line);
		counter++;
	}

	OSMO_ASSERT(counter == EXPECTED_NUMBER_OF_LINES);
}

#define AUEP1	"AUEP 158663169 ds/e1-1/2@mgw MGCP 1.0\r\n"
#define AUEP1_RET "200 158663169 OK\r\n"
#define AUEP2	"AUEP 18983213 ds/e1-2/1@mgw 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@mgw MGCP 1.0\r\n"
#define MDCX_ERR_RET "500 18983213 FAIL\r\n"
#define MDCX_UNALLOCATED "MDCX 18983214 ds/e1-1/2@mgw MGCP 1.0\r\n"
#define MDCX_RET "400 18983214 FAIL\r\n"

#define MDCX3 \
	"MDCX 18983215 1@mgw MGCP 1.0\r\n" \
	"I: %s\n"

#define MDCX3_RET \
	"200 18983215 OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16002 RTP/AVP 97\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX3A_RET \
	"200 18983215 OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16002 RTP/AVP 97\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX3_FMTP_RET \
	"200 18983215 OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16006 RTP/AVP 97\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=fmtp:126 0/1/2\r\n" \
	"a=ptime:40\r\n"

#define MDCX4 \
	"MDCX 18983216 1@mgw MGCP 1.0\r\n" \
	"M: sendrecv\r" \
	"C: 2\r\n" \
	"I: %s\r\n" \
	"L: p:20, a:AMR, nt:IN\r\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 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 4441 RTP/AVP 99\r\n" \
	"a=rtpmap:99 AMR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_RET(Ident) \
	"200 " Ident " OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16002 RTP/AVP 99\r\n" \
	"a=rtpmap:99 AMR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_RO_RET(Ident) \
	"200 " Ident " OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16002 RTP/AVP 96\r\n" \
	"a=rtpmap:96 AMR\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_PT1 \
	"MDCX 18983217 1@mgw MGCP 1.0\r\n" \
	"M: sendrecv\r" \
	"C: 2\r\n" \
	"I: %s\r\n" \
	"L: p:20-40, a:AMR, nt:IN\r\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 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 4441 RTP/AVP 99\r\n" \
	"a=rtpmap:99 AMR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_PT2 \
	"MDCX 18983218 1@mgw MGCP 1.0\r\n" \
	"M: sendrecv\r" \
	"C: 2\r\n" \
	"I: %s\r\n" \
	"L: p:20-20, a:AMR, nt:IN\r\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 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 4441 RTP/AVP 99\r\n" \
	"a=rtpmap:99 AMR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_PT3 \
	"MDCX 18983219 1@mgw MGCP 1.0\r\n" \
	"M: sendrecv\r" \
	"C: 2\r\n" \
	"I: %s\r\n" \
	"L: a:AMR, nt:IN\r\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 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 4441 RTP/AVP 99\r\n" \
	"a=rtpmap:99 AMR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_SO \
	"MDCX 18983220 1@mgw MGCP 1.0\r\n" \
	"M: sendonly\r" \
	"C: 2\r\n" \
	"I: %s\r\n" \
	"L: p:20, a:AMR, nt:IN\r\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 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 4441 RTP/AVP 99\r\n" \
	"a=rtpmap:99 AMR/8000\r\n" \
	"a=ptime:40\r\n"

#define MDCX4_RO \
	"MDCX 18983221 1@mgw MGCP 1.0\r\n" \
	"M: recvonly\r" \
	"C: 2\r\n" \
	"I: %s\r\n" \
	"L: p:20, a:AMR, nt:IN\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: recvonly\r\n" \
	"C: 2\r\n" \
	"L: p:20\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" \
	"a=ptime:40\r\n"

#define CRCX_RET \
	"200 2 OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16002 RTP/AVP 97\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=ptime:40\r\n"

#define CRCX_RET_NO_RTPMAP \
	"200 2 OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16002 RTP/AVP 97\r\n" \
	"a=ptime:40\r\n"

#define CRCX_FMTP_RET \
	"200 2 OK\r\n" \
	"I: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16006 RTP/AVP 97\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=fmtp:126 0/1/2\r\n" \
	"a=ptime:40\r\n"

#define CRCX_ZYN \
	"CRCX 2 1@mgw MGCP 1.0\r" \
	"M: recvonly\r" \
	"C: 2\r\n" \
	"\n" \
	"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: %s\n" \
	"\n" \
	"v=0\r\n" \
	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
	"s=-\r\n" \
	"c=IN IP4 0.0.0.0\r\n" \
	"t=0 0\r\n" \
	"m=audio 16004 RTP/AVP 97\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=ptime:20\r\n"

#define DLCX \
	"DLCX 7 1@mgw MGCP 1.0\r\n" \
	"I: %s\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" \
	"X-Osmo-CP: EC TI=0, TO=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"

#define PTYPE_IGNORE 0		/* == default initializer */
#define PTYPE_NONE 128
#define PTYPE_NYI  PTYPE_NONE

#define CRCX_MULT_1 \
	"CRCX 2 1@mgw MGCP 1.0\r\n" \
	"M: recvonly\r\n" \
	"C: 2\r\n" \
	"X\r\n" \
	"L: p:20\r\n" \
	"\r\n" \
	"v=0\r\n" \
	"c=IN IP4 123.12.12.123\r\n" \
	"m=audio 5904 RTP/AVP 18 97\r\n" \
	"a=rtpmap:18 G729/8000\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=ptime:40\r\n"

#define CRCX_MULT_2 \
	"CRCX 2 2@mgw MGCP 1.0\r\n" \
	"M: recvonly\r\n" \
	"C: 2\r\n" \
	"X\r\n" \
	"L: p:20\r\n" \
	"\r\n" \
	"v=0\r\n" \
	"c=IN IP4 123.12.12.123\r\n" \
	"m=audio 5904 RTP/AVP 18 97 101\r\n" \
	"a=rtpmap:18 G729/8000\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=rtpmap:101 FOO/8000\r\n" \
	"a=ptime:40\r\n"

#define CRCX_MULT_3 \
	"CRCX 2 3@mgw MGCP 1.0\r\n" \
	"M: recvonly\r\n" \
	"C: 2\r\n" \
	"X\r\n" \
	"L: p:20\r\n" \
	"\r\n" \
	"v=0\r\n" \
	"c=IN IP4 123.12.12.123\r\n" \
	"m=audio 5904 RTP/AVP\r\n" \
	"a=rtpmap:18 G729/8000\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=rtpmap:101 FOO/8000\r\n" \
	"a=ptime:40\r\n"

#define CRCX_MULT_4 \
	"CRCX 2 4@mgw MGCP 1.0\r\n" \
	"M: recvonly\r\n" \
	"C: 2\r\n" \
	"X\r\n" \
	"L: p:20\r\n" \
	"\r\n" \
	"v=0\r\n" \
	"c=IN IP4 123.12.12.123\r\n" \
	"m=audio 5904 RTP/AVP 18\r\n" \
	"a=rtpmap:18 G729/8000\r\n" \
	"a=rtpmap:97 GSM-EFR/8000\r\n" \
	"a=rtpmap:101 FOO/8000\r\n" \
	"a=ptime:40\r\n"

#define CRCX_MULT_GSM_EXACT \
	"CRCX 259260421 5@mgw MGCP 1.0\r\n" \
	"C: 1355c6041e\r\n" \
	"L: p:20, a:GSM, nt:IN\r\n" \
	"M: recvonly\r\n" \
	"\r\n" \
	"v=0\r\n" \
	"o=- 1439038275 1439038275 IN IP4 192.168.181.247\r\n" \
	"s=-\r\nc=IN IP4 192.168.181.247\r\n" \
	"t=0 0\r\nm=audio 29084 RTP/AVP 255 0 8 3 18 4 96 97 101\r\n" \
	"a=rtpmap:0 PCMU/8000\r\n" \
	"a=rtpmap:8 PCMA/8000\r\n" \
	"a=rtpmap:3 gsm/8000\r\n" \
	"a=rtpmap:18 G729/8000\r\n" \
	"a=fmtp:18 annexb=no\r\n" \
	"a=rtpmap:4 G723/8000\r\n" \
	"a=rtpmap:96 iLBC/8000\r\n" \
	"a=fmtp:96 mode=20\r\n" \
	"a=rtpmap:97 iLBC/8000\r\n" \
	"a=fmtp:97 mode=30\r\n" \
	"a=rtpmap:101 telephone-event/8000\r\n" \
	"a=fmtp:101 0-15\r\n" \
	"a=recvonly\r\n"

#define MDCX_NAT_DUMMY \
	"MDCX 23 5@mgw MGCP 1.0\r\n" \
	"C: 1355c6041e\r\n" \
	"I: %s\r\n" \
	"\r\n" \
	"c=IN IP4 8.8.8.8\r\n" \
	"m=audio 16434 RTP/AVP 255\r\n"

struct mgcp_test {
	const char *name;
	const char *req;
	const char *exp_resp;
	int ptype;
	const char *extra_fmtp;
};

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, 97},
	{"MDCX3", MDCX3, MDCX3_RET, PTYPE_IGNORE},
	{"MDCX4", MDCX4, MDCX4_RET("18983216"), 99},
	{"MDCX4_PT1", MDCX4_PT1, MDCX4_RET("18983217"), 99},
	{"MDCX4_PT2", MDCX4_PT2, MDCX4_RET("18983218"), 99},
	{"MDCX4_PT3", MDCX4_PT3, MDCX4_RET("18983219"), 99},
	{"MDCX4_SO", MDCX4_SO, MDCX4_RET("18983220"), 99},
	{"MDCX4_RO", MDCX4_RO, MDCX4_RO_RET("18983221"), PTYPE_IGNORE},
	{"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE},
	{"CRCX_ZYN", CRCX_ZYN, CRCX_ZYN_RET, 97},
	{"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, PTYPE_IGNORE},
	{"CRCX", CRCX, CRCX_FMTP_RET, 97,.extra_fmtp = "a=fmtp:126 0/1/2"},
	{"MDCX3", MDCX3, MDCX3_FMTP_RET, PTYPE_NONE,.extra_fmtp =
	 "a=fmtp:126 0/1/2"},
	{"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE,.extra_fmtp = "a=fmtp:126 0/1/2"},
};

static const struct mgcp_test retransmit[] = {
	{"CRCX", CRCX, CRCX_RET},
	{"RQNT1", RQNT, RQNT1_RET},
	{"RQNT2", RQNT2, RQNT2_RET},
	{"MDCX3", MDCX3, MDCX3A_RET},
	{"DLCX", DLCX, DLCX_RET},
};

static struct msgb *create_msg(const char *str, const char *conn_id)
{
	struct msgb *msg;
	int len;

	printf("creating message from statically defined input:\n");
	printf("---------8<---------\n%s\n---------8<---------\n", str);

	msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
	if (conn_id && strlen(conn_id))
		len = sprintf((char *)msg->data, str, conn_id, conn_id);
	else
		len = sprintf((char *)msg->data, "%s", str);

	msg->l2h = msgb_put(msg, len);
	return msg;
}

static int last_endpoint = -1;

static int mgcp_test_policy_cb(struct mgcp_trunk_config *cfg, int endpoint,
			       int state, const char *transactio_id)
{
	fprintf(stderr, "Policy CB got state %d on endpoint %d\n",
		state, endpoint);
	last_endpoint = endpoint;
	return MGCP_POLICY_CONT;
}

#define MGCP_DUMMY_LOAD 0x23
static int dummy_packets = 0;
/* override and forward */
ssize_t sendto(int sockfd, const void *buf, size_t len, int flags,
	       const struct sockaddr *dest_addr, socklen_t addrlen)
{
	uint32_t dest_host =
	    htonl(((struct sockaddr_in *)dest_addr)->sin_addr.s_addr);
	int dest_port = htons(((struct sockaddr_in *)dest_addr)->sin_port);

	if (len == 1 && ((const char *)buf)[0] == MGCP_DUMMY_LOAD) {
		fprintf(stderr,
			"Dummy packet to 0x%08x:%d, msg length %zu\n%s\n\n",
			dest_host, dest_port, len, osmo_hexdump(buf, len));
		dummy_packets += 1;
	}

	return len;
}

static int64_t force_monotonic_time_us = -1;
/* override and forward */
int clock_gettime(clockid_t clk_id, struct timespec *tp)
{
	typedef int (*clock_gettime_t)(clockid_t clk_id, struct timespec *tp);
	static clock_gettime_t real_clock_gettime = NULL;

	if (!real_clock_gettime)
		real_clock_gettime = dlsym(RTLD_NEXT, "clock_gettime");

	if (clk_id == CLOCK_MONOTONIC && force_monotonic_time_us >= 0) {
		tp->tv_sec = force_monotonic_time_us / 1000000;
		tp->tv_nsec = (force_monotonic_time_us % 1000000) * 1000;
		return 0;
	}

	return real_clock_gettime(clk_id, tp);
}

#define CONN_UNMODIFIED (0x1000)

static void test_values(void)
{
	/* Check that NONE disables all output */
	OSMO_ASSERT((MGCP_CONN_NONE & MGCP_CONN_RECV_SEND) == 0);

	/* Check that LOOPBACK enables all output */
	OSMO_ASSERT((MGCP_CONN_LOOPBACK & MGCP_CONN_RECV_SEND) ==
		    MGCP_CONN_RECV_SEND);
}

/* Extract a connection ID from a response (CRCX) */
static int get_conn_id_from_response(uint8_t *resp, char *conn_id,
				     unsigned int conn_id_len)
{
	char *conn_id_ptr;
	int i;

	conn_id_ptr = strstr((char *)resp, "I: ");
	if (!conn_id_ptr)
		return -EINVAL;

	memset(conn_id, 0, conn_id_len);
	memcpy(conn_id, conn_id_ptr + 3, 32);

	for (i = 0; i < conn_id_len; i++) {
		if (conn_id[i] == '\n' || conn_id[i] == '\r')
			conn_id[i] = '\0';
	}

	/* A valid conn_id must at least contain one digit, and must
	 * not exceed a length of 32 digits */
	OSMO_ASSERT(strlen(conn_id) <= 32);
	OSMO_ASSERT(strlen(conn_id) > 0);

	return 0;
}

/* Check response, automatically patch connection ID if needed */
static int check_response(uint8_t *resp, const char *exp_resp)
{
	char exp_resp_patched[4096];
	const char *exp_resp_ptr;
	char conn_id[256];

	printf("checking response:\n");

	/* If the expected response is intened to be patched
	 * (%s placeholder inside) we will patch it with the
	 * connection identifier we just received from the
	 * real response. This is necessary because the CI
	 * is generated by the mgcp code on CRCX and we can
	 * not know it in advance */
	if (strstr(exp_resp, "%s")) {
		if (get_conn_id_from_response(resp, conn_id, sizeof(conn_id)) ==
		    0) {
			sprintf(exp_resp_patched, exp_resp, conn_id, conn_id);
			exp_resp_ptr = exp_resp_patched;
			printf
			    ("using message with patched conn_id for comparison\n");
		} else {
			printf
			    ("patching conn_id failed, using message as statically defined for comparison\n");
			exp_resp_ptr = exp_resp;
		}
	} else {
		printf("using message as statically defined for comparison\n");
		exp_resp_ptr = exp_resp;
	}

	if (strcmp((char *)resp, exp_resp_ptr) != 0) {
		printf("Unexpected response, please check!\n");
		printf
		    ("Got:\n---------8<---------\n%s\n---------8<---------\n\n",
		     resp);
		printf
		    ("Expected:\n---------8<---------\n%s\n---------8<---------\n",
		     exp_resp_ptr);
		return -EINVAL;
	}

	printf("Response matches our expectations.\n");
	return 0;
}

static void test_messages(void)
{
	struct mgcp_config *cfg;
	struct mgcp_endpoint *endp;
	int i;
	struct mgcp_conn_rtp *conn = NULL;
	char last_conn_id[256];
	int rc;

	cfg = mgcp_config_alloc();

	cfg->trunk.vty_number_endpoints = 64;
	mgcp_endpoints_allocate(&cfg->trunk);
	cfg->policy_cb = mgcp_test_policy_cb;

	memset(last_conn_id, 0, sizeof(last_conn_id));

	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("\n================================================\n");
		printf("Testing %s\n", t->name);

		last_endpoint = -1;
		dummy_packets = 0;

		osmo_talloc_replace_string(cfg, &cfg->trunk.audio_fmtp_extra,
					   t->extra_fmtp);

		inp = create_msg(t->req, last_conn_id);
		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);
				OSMO_ASSERT(false);
			}
		} else if (check_response(msg->data, t->exp_resp) != 0) {
			printf("%s failed.\n", t->name);
			OSMO_ASSERT(false);
		}

		if (msg) {
			rc = get_conn_id_from_response(msg->data, last_conn_id,
						       sizeof(last_conn_id));
			if (rc)
				printf("(response contains a connection id)\n");
			else
				printf("(response does not contain a connection id)\n");
		}

		if (msg)
			msgb_free(msg);

		if (dummy_packets)
			printf("Dummy packets: %d\n", dummy_packets);

		if (last_endpoint != -1) {
			endp = &cfg->trunk.endpoints[last_endpoint];

			conn = mgcp_conn_get_rtp(endp, "1");
			if (conn) {
				OSMO_ASSERT(conn);

				if (conn->end.packet_duration_ms != -1)
					printf("Detected packet duration: %d\n",
					       conn->end.packet_duration_ms);
				else
					printf("Packet duration not set\n");
				if (endp->local_options.pkt_period_min ||
				    endp->local_options.pkt_period_max)
					printf
					    ("Requested packetetization period: "
					     "%d-%d\n",
					     endp->local_options.pkt_period_min,
					     endp->
					     local_options.pkt_period_max);
				else
					printf
					    ("Requested packetization period not set\n");

				if ((conn->conn->mode & CONN_UNMODIFIED) == 0) {
					printf("Connection mode: %d:%s%s%s%s\n",
					       conn->conn->mode,
					       !conn->conn->mode ? " NONE" : "",
					       conn->conn->mode & MGCP_CONN_SEND_ONLY
					       ? " SEND" : "",
					       conn->conn->mode & MGCP_CONN_RECV_ONLY
					       ? " RECV" : "",
					       conn->conn->mode & MGCP_CONN_LOOPBACK
					       & ~MGCP_CONN_RECV_SEND
					       ? " LOOP" : "");
					fprintf(stderr,
						"RTP output %sabled, NET output %sabled\n",
						conn->end.output_enabled
						? "en" : "dis",
						conn->end.output_enabled
						? "en" : "dis");
				} else
					printf("Connection mode not set\n");

				OSMO_ASSERT(conn->end.output_enabled
					    == (conn->conn->mode & MGCP_CONN_SEND_ONLY ? 1 : 0));

				conn->conn->mode |= CONN_UNMODIFIED;

			}
			endp->local_options.pkt_period_min = 0;
			endp->local_options.pkt_period_max = 0;
		}

		/* Check detected payload type */
		if (conn && t->ptype != PTYPE_IGNORE) {
			OSMO_ASSERT(last_endpoint != -1);
			endp = &cfg->trunk.endpoints[last_endpoint];

			fprintf(stderr, "endpoint %d: "
				"payload type %d (expected %d)\n",
				last_endpoint,
				conn->end.codec.payload_type, t->ptype);

			if (t->ptype != PTYPE_IGNORE)
				OSMO_ASSERT(conn->end.codec.payload_type ==
					    t->ptype);

			/* Reset them again for next test */
			conn->end.codec.payload_type = PTYPE_NONE;
		}
	}

	talloc_free(cfg);
}

static void test_retransmission(void)
{
	struct mgcp_config *cfg;
	int i;
	char last_conn_id[256];
	int rc;

	cfg = mgcp_config_alloc();

	cfg->trunk.vty_number_endpoints = 64;
	mgcp_endpoints_allocate(&cfg->trunk);

	memset(last_conn_id, 0, sizeof(last_conn_id));

	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("\n================================================\n");
		printf("Testing %s\n", t->name);

		inp = create_msg(t->req, last_conn_id);
		msg = mgcp_handle_message(cfg, inp);

		msgb_free(inp);
		if (msg && check_response(msg->data, t->exp_resp) != 0) {
			printf("%s failed '%s'\n", t->name, (char *)msg->data);
			OSMO_ASSERT(false);
		}

		if (msg && strcmp(t->name, "CRCX") == 0) {
		        rc = get_conn_id_from_response(msg->data, last_conn_id,
						       sizeof(last_conn_id));
			OSMO_ASSERT(rc == 0);
		}

		if (msg)
			msgb_free(msg);

		/* Retransmit... */
		printf("Re-transmitting %s\n", t->name);
		inp = create_msg(t->req, last_conn_id);
		msg = mgcp_handle_message(cfg, inp);
		msgb_free(inp);
		if (check_response(msg->data, t->exp_resp) != 0) {
			printf("%s failed '%s'\n", t->name, (char *)msg->data);
			OSMO_ASSERT(false);
		}
		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;
	char conn_id[256];

	cfg = mgcp_config_alloc();
	cfg->rqnt_cb = rqnt_cb;

	cfg->trunk.vty_number_endpoints = 64;
	mgcp_endpoints_allocate(&cfg->trunk);

	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

	inp = create_msg(CRCX, NULL);
	msg = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(msg);
	OSMO_ASSERT(get_conn_id_from_response(msg->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(msg);
	msgb_free(inp);

	/* send the RQNT and check for the CB */
	inp = create_msg(RQNT, conn_id);
	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, conn_id);
	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.stats.initialized = 1;
		state.stats.base_seq = pl_test_dat[i].base_seq;
		state.stats.max_seq = pl_test_dat[i].max_seq;
		state.stats.cycles = pl_test_dat[i].cycles;

		rtp.stats.packets_rx = pl_test_dat[i].packets;
		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);
		}
	}
}

int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os,
		     uint32_t *pr, uint32_t *_or, int *loss,
		     uint32_t *jitter)
{
	char *line, *save;
	int rc;

	/* initialize with bad values */
	*ps = *os = *pr = *_or = *jitter = UINT_MAX;
	*loss = INT_MAX;

	line = strtok_r((char *)msg->l2h, "\r\n", &save);
	if (!line)
		return -1;

	/* this can only parse the message that is created above... */
	for_each_non_empty_line(line, save) {
		switch (line[0]) {
		case 'P':
			rc = sscanf(line,
				    "P: PS=%u, OS=%u, PR=%u, OR=%u, PL=%d, JI=%u",
				    ps, os, pr, _or, loss, jitter);
			return rc == 6 ? 0 : -1;
		}
	}

	return -1;
}

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, NULL);
	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", NULL);
	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);
}

struct rtp_packet_info {
	float txtime;
	int len;
	char *data;
};

struct rtp_packet_info test_rtp_packets1[] = {
	/* RTP: SeqNo=0, TS=0 */
	{0.000000, 20, "\x80\x62\x00\x00\x00\x00\x00\x00\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=1, TS=160 */
	{0.020000, 20, "\x80\x62\x00\x01\x00\x00\x00\xA0\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=2, TS=320 */
	{0.040000, 20, "\x80\x62\x00\x02\x00\x00\x01\x40\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* Repeat RTP timestamp: */
	/* RTP: SeqNo=3, TS=320 */
	{0.060000, 20, "\x80\x62\x00\x03\x00\x00\x01\x40\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=4, TS=480 */
	{0.080000, 20, "\x80\x62\x00\x04\x00\x00\x01\xE0\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=5, TS=640 */
	{0.100000, 20, "\x80\x62\x00\x05\x00\x00\x02\x80\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* Double skip RTP timestamp (delta = 2*160): */
	/* RTP: SeqNo=6, TS=960 */
	{0.120000, 20, "\x80\x62\x00\x06\x00\x00\x03\xC0\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=7, TS=1120 */
	{0.140000, 20, "\x80\x62\x00\x07\x00\x00\x04\x60\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=8, TS=1280 */
	{0.160000, 20, "\x80\x62\x00\x08\x00\x00\x05\x00\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* Non 20ms RTP timestamp (delta = 120): */
	/* RTP: SeqNo=9, TS=1400 */
	{0.180000, 20, "\x80\x62\x00\x09\x00\x00\x05\x78\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=10, TS=1560 */
	{0.200000, 20, "\x80\x62\x00\x0A\x00\x00\x06\x18\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=11, TS=1720 */
	{0.220000, 20, "\x80\x62\x00\x0B\x00\x00\x06\xB8\x11\x22\x33\x44"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* SSRC changed to 0x10203040, RTP timestamp jump */
	/* RTP: SeqNo=12, TS=34688 */
	{0.240000, 20, "\x80\x62\x00\x0C\x00\x00\x87\x80\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=13, TS=34848 */
	{0.260000, 20, "\x80\x62\x00\x0D\x00\x00\x88\x20\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=14, TS=35008 */
	{0.280000, 20, "\x80\x62\x00\x0E\x00\x00\x88\xC0\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* Non 20ms RTP timestamp (delta = 120): */
	/* RTP: SeqNo=15, TS=35128 */
	{0.300000, 20, "\x80\x62\x00\x0F\x00\x00\x89\x38\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=16, TS=35288 */
	{0.320000, 20, "\x80\x62\x00\x10\x00\x00\x89\xD8\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=17, TS=35448 */
	{0.340000, 20, "\x80\x62\x00\x11\x00\x00\x8A\x78\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x8A\xAB\xCD\xEF"},
	/* SeqNo increment by 2, RTP timestamp delta = 320: */
	/* RTP: SeqNo=19, TS=35768 */
	{0.360000, 20, "\x80\x62\x00\x13\x00\x00\x8B\xB8\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=20, TS=35928 */
	{0.380000, 20, "\x80\x62\x00\x14\x00\x00\x8C\x58\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=21, TS=36088 */
	{0.380000, 20, "\x80\x62\x00\x15\x00\x00\x8C\xF8\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* Repeat last packet */
	/* RTP: SeqNo=21, TS=36088 */
	{0.400000, 20, "\x80\x62\x00\x15\x00\x00\x8C\xF8\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=22, TS=36248 */
	{0.420000, 20, "\x80\x62\x00\x16\x00\x00\x8D\x98\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=23, TS=36408 */
	{0.440000, 20, "\x80\x62\x00\x17\x00\x00\x8E\x38\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* Don't increment SeqNo but increment timestamp by 160 */
	/* RTP: SeqNo=23, TS=36568 */
	{0.460000, 20, "\x80\x62\x00\x17\x00\x00\x8E\xD8\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=24, TS=36728 */
	{0.480000, 20, "\x80\x62\x00\x18\x00\x00\x8F\x78\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=25, TS=36888 */
	{0.500000, 20, "\x80\x62\x00\x19\x00\x00\x90\x18\x10\x20\x30\x40"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* SSRC changed to 0x50607080, RTP timestamp jump, Delay of 1.5s,
	 * SeqNo jump */
	/* RTP: SeqNo=1000, TS=160000 */
	{2.000000, 20, "\x80\x62\x03\xE8\x00\x02\x71\x00\x50\x60\x70\x80"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=1001, TS=160160 */
	{2.020000, 20, "\x80\x62\x03\xE9\x00\x02\x71\xA0\x50\x60\x70\x80"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
	/* RTP: SeqNo=1002, TS=160320 */
	{2.040000, 20, "\x80\x62\x03\xEA\x00\x02\x72\x40\x50\x60\x70\x80"
	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
};

void mgcp_patch_and_count(struct mgcp_endpoint *endp,
			  struct mgcp_rtp_state *state,
			  struct mgcp_rtp_end *rtp_end,
			  struct sockaddr_in *addr, char *data, int len);

static void test_packet_error_detection(int patch_ssrc, int patch_ts)
{
	int i;

	struct mgcp_trunk_config trunk;
	struct mgcp_endpoint endp;
	struct mgcp_rtp_state state;
	struct mgcp_rtp_end *rtp;
	struct sockaddr_in addr = { 0 };
	char buffer[4096];
	uint32_t last_ssrc = 0;
	uint32_t last_timestamp = 0;
	uint32_t last_seqno = 0;
	int last_in_ts_err_cnt = 0;
	int last_out_ts_err_cnt = 0;
	struct mgcp_conn_rtp *conn = NULL;
	struct mgcp_conn *_conn = NULL;

	printf("Testing packet error detection%s%s.\n",
	       patch_ssrc ? ", patch SSRC" : "",
	       patch_ts ? ", patch timestamps" : "");

	memset(&trunk, 0, sizeof(trunk));
	memset(&endp, 0, sizeof(endp));
	memset(&state, 0, sizeof(state));

	endp.type = &ep_typeset.rtp;

	trunk.vty_number_endpoints = 1;
	trunk.endpoints = &endp;
	trunk.force_constant_ssrc = patch_ssrc;
	trunk.force_aligned_timing = patch_ts;

	endp.tcfg = &trunk;

	INIT_LLIST_HEAD(&endp.conns);
	_conn = mgcp_conn_alloc(NULL, &endp, MGCP_CONN_TYPE_RTP,
				"test-connection");
	OSMO_ASSERT(_conn);
	conn = mgcp_conn_get_rtp(&endp, _conn->id);
	OSMO_ASSERT(conn);

	rtp = &conn->end;

	rtp->codec.payload_type = 98;

	for (i = 0; i < ARRAY_SIZE(test_rtp_packets1); ++i) {
		struct rtp_packet_info *info = test_rtp_packets1 + i;

		force_monotonic_time_us = round(1000000.0 * info->txtime);

		OSMO_ASSERT(info->len <= sizeof(buffer));
		OSMO_ASSERT(info->len >= 0);
		memmove(buffer, info->data, info->len);
		mgcp_rtp_end_config(&endp, 1, rtp);

		mgcp_patch_and_count(&endp, &state, rtp, &addr,
				     buffer, info->len);

		if (state.out_stream.ssrc != last_ssrc) {
			printf("Output SSRC changed to %08x\n",
			       state.out_stream.ssrc);
			last_ssrc = state.out_stream.ssrc;
		}

		printf("In TS: %d, dTS: %d, Seq: %d\n",
		       state.in_stream.last_timestamp,
		       state.in_stream.last_tsdelta, state.in_stream.last_seq);

		printf("Out TS change: %d, dTS: %d, Seq change: %d, "
		       "TS Err change: in %+d, out %+d\n",
		       state.out_stream.last_timestamp - last_timestamp,
		       state.out_stream.last_tsdelta,
		       state.out_stream.last_seq - last_seqno,
		       state.in_stream.err_ts_counter - last_in_ts_err_cnt,
		       state.out_stream.err_ts_counter - last_out_ts_err_cnt);

		printf("Stats: Jitter = %u, Transit = %d\n",
		       calc_jitter(&state), state.stats.transit);

		last_in_ts_err_cnt = state.in_stream.err_ts_counter;
		last_out_ts_err_cnt = state.out_stream.err_ts_counter;
		last_timestamp = state.out_stream.last_timestamp;
		last_seqno = state.out_stream.last_seq;
	}

	force_monotonic_time_us = -1;
	mgcp_conn_free_all(&endp);
}

static void test_multilple_codec(void)
{
	struct mgcp_config *cfg;
	struct mgcp_endpoint *endp;
	struct msgb *inp, *resp;
	struct in_addr addr;
	struct mgcp_conn_rtp *conn = NULL;
	char conn_id[256];

	printf("Testing multiple payload types\n");

	cfg = mgcp_config_alloc();
	cfg->trunk.vty_number_endpoints = 64;
	mgcp_endpoints_allocate(&cfg->trunk);
	cfg->policy_cb = mgcp_test_policy_cb;
	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

	/* Allocate endpoint 1@mgw with two codecs */
	last_endpoint = -1;
	inp = create_msg(CRCX_MULT_1, NULL);
	resp = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(get_conn_id_from_response(resp->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(inp);
	msgb_free(resp);

	OSMO_ASSERT(last_endpoint == 1);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == 18);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == 97);

	/* Allocate 2@mgw with three codecs, last one ignored */
	last_endpoint = -1;
	inp = create_msg(CRCX_MULT_2, NULL);
	resp = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(get_conn_id_from_response(resp->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(inp);
	msgb_free(resp);

	OSMO_ASSERT(last_endpoint == 2);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == 18);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == 97);

	/* Allocate 3@mgw with no codecs, check for PT == -1 */
	last_endpoint = -1;
	inp = create_msg(CRCX_MULT_3, NULL);
	resp = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(get_conn_id_from_response(resp->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(inp);
	msgb_free(resp);

	OSMO_ASSERT(last_endpoint == 3);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == -1);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);

	/* Allocate 4@mgw with a single codec */
	last_endpoint = -1;
	inp = create_msg(CRCX_MULT_4, NULL);
	resp = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(get_conn_id_from_response(resp->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(inp);
	msgb_free(resp);

	OSMO_ASSERT(last_endpoint == 4);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == 18);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);

	/* Allocate 5@mgw at select GSM.. */
	last_endpoint = -1;
	inp = create_msg(CRCX_MULT_GSM_EXACT, NULL);
	talloc_free(cfg->trunk.audio_name);
	cfg->trunk.audio_name = "GSM/8000";
	cfg->trunk.no_audio_transcoding = 1;
	resp = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(get_conn_id_from_response(resp->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(inp);
	msgb_free(resp);

	OSMO_ASSERT(last_endpoint == 5);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == 3);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);

	inp = create_msg(MDCX_NAT_DUMMY, conn_id);
	last_endpoint = -1;
	resp = mgcp_handle_message(cfg, inp);
	msgb_free(inp);
	msgb_free(resp);
	OSMO_ASSERT(last_endpoint == 5);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == 3);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == -1);
	OSMO_ASSERT(conn->end.rtp_port == htons(16434));
	memset(&addr, 0, sizeof(addr));
	inet_aton("8.8.8.8", &addr);
	OSMO_ASSERT(conn->end.addr.s_addr == addr.s_addr);

	/* Check what happens without that flag */

	/* Free the previous endpoint and the data and
	 * check if the connection really vanished... */
	mgcp_release_endp(endp);
	talloc_free(endp->last_response);
	talloc_free(endp->last_trans);
	endp->last_response = endp->last_trans = NULL;
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(!conn);

	last_endpoint = -1;
	inp = create_msg(CRCX_MULT_GSM_EXACT, NULL);
	cfg->trunk.no_audio_transcoding = 0;
	resp = mgcp_handle_message(cfg, inp);
	OSMO_ASSERT(get_conn_id_from_response(resp->data, conn_id,
					      sizeof(conn_id)) == 0);
	msgb_free(inp);
	msgb_free(resp);

	OSMO_ASSERT(last_endpoint == 5);
	endp = &cfg->trunk.endpoints[last_endpoint];
	conn = mgcp_conn_get_rtp(endp, conn_id);
	OSMO_ASSERT(conn);
	OSMO_ASSERT(conn->end.codec.payload_type == 255);
	OSMO_ASSERT(conn->end.alt_codec.payload_type == 0);

	talloc_free(cfg);
}

static void test_no_cycle(void)
{
	struct mgcp_config *cfg;
	struct mgcp_endpoint *endp;
	struct mgcp_conn_rtp *conn = NULL;
	struct mgcp_conn *_conn = NULL;

	printf("Testing no sequence flow on initial packet\n");

	cfg = mgcp_config_alloc();
	cfg->trunk.vty_number_endpoints = 64;
	mgcp_endpoints_allocate(&cfg->trunk);

	endp = &cfg->trunk.endpoints[1];

	_conn = mgcp_conn_alloc(NULL, endp, MGCP_CONN_TYPE_RTP,
				"test-connection");
	OSMO_ASSERT(_conn);
	conn = mgcp_conn_get_rtp(endp, _conn->id);
	OSMO_ASSERT(conn);

	OSMO_ASSERT(conn->state.stats.initialized == 0);

	mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342);
	OSMO_ASSERT(conn->state.stats.initialized == 1);
	OSMO_ASSERT(conn->state.stats.cycles == 0);
	OSMO_ASSERT(conn->state.stats.max_seq == 0);

	mgcp_rtp_annex_count(endp, &conn->state, 1, 0, 2342);
	OSMO_ASSERT(conn->state.stats.initialized == 1);
	OSMO_ASSERT(conn->state.stats.cycles == 0);
	OSMO_ASSERT(conn->state.stats.max_seq == 1);

	/* now jump.. */
	mgcp_rtp_annex_count(endp, &conn->state, UINT16_MAX, 0, 2342);
	OSMO_ASSERT(conn->state.stats.initialized == 1);
	OSMO_ASSERT(conn->state.stats.cycles == 0);
	OSMO_ASSERT(conn->state.stats.max_seq == UINT16_MAX);

	/* and wrap */
	mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342);
	OSMO_ASSERT(conn->state.stats.initialized == 1);
	OSMO_ASSERT(conn->state.stats.cycles == UINT16_MAX + 1);
	OSMO_ASSERT(conn->state.stats.max_seq == 0);

	mgcp_release_endp(endp);
	talloc_free(cfg);
}

static void test_no_name(void)
{
	struct mgcp_config *cfg;
	struct msgb *inp, *msg;

	printf("Testing no rtpmap name\n");
	cfg = mgcp_config_alloc();

	cfg->trunk.vty_number_endpoints = 64;
	cfg->trunk.audio_send_name = 0;
	mgcp_endpoints_allocate(&cfg->trunk);

	cfg->policy_cb = mgcp_test_policy_cb;

	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

	inp = create_msg(CRCX, NULL);
	msg = mgcp_handle_message(cfg, inp);

	if (check_response(msg->data, CRCX_RET_NO_RTPMAP) != 0) {
		printf("FAILED: there should not be a RTPMAP: %s\n",
		       (char *)msg->data);
		OSMO_ASSERT(false);
	}
	msgb_free(inp);
	msgb_free(msg);

	mgcp_release_endp(&cfg->trunk.endpoints[1]);
	talloc_free(cfg);
}

static void test_osmux_cid(void)
{
	int id, i;

	OSMO_ASSERT(osmux_used_cid() == 0);
	id = osmux_get_cid();
	OSMO_ASSERT(id == 0);
	OSMO_ASSERT(osmux_used_cid() == 1);
	osmux_put_cid(id);
	OSMO_ASSERT(osmux_used_cid() == 0);

	for (i = 0; i < 256; ++i) {
		id = osmux_get_cid();
		OSMO_ASSERT(id == i);
		OSMO_ASSERT(osmux_used_cid() == i + 1);
	}

	id = osmux_get_cid();
	OSMO_ASSERT(id == -1);

	for (i = 0; i < 256; ++i)
		osmux_put_cid(i);
	OSMO_ASSERT(osmux_used_cid() == 0);
}

static const struct log_info_cat log_categories[] = {
};

const struct log_info log_info = {
	.cat = log_categories,
	.num_cat = ARRAY_SIZE(log_categories),
};

int main(int argc, char **argv)
{
	void *msgb_ctx = msgb_talloc_ctx_init(NULL, 0);
	osmo_init_logging(&log_info);

	test_strline();
	test_values();
	test_messages();
	test_retransmission();
	test_packet_loss_calc();
	test_rqnt_cb();
	test_mgcp_stats();
	test_packet_error_detection(1, 0);
	test_packet_error_detection(0, 0);
	test_packet_error_detection(0, 1);
	test_packet_error_detection(1, 1);
	test_multilple_codec();
	test_no_cycle();
	test_no_name();
	test_osmux_cid();

	OSMO_ASSERT(talloc_total_size(msgb_ctx) == 0);
	OSMO_ASSERT(talloc_total_blocks(msgb_ctx) == 1);
	talloc_free(msgb_ctx);
	printf("Done\n");
	return EXIT_SUCCESS;
}