initial checkin of 'osmo-rtpsource' program
osmo-rtpsource is a small utility program which is generating RTP flows at a constant rate of 20ms, as required in most IP based telphony. The payload currently is hard-coded. Change-Id: Id4e292ddfd5aa58754382b2380558993b2ddf07a
This commit is contained in:
parent
c4e12b35c0
commit
0c823e6b5d
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@ -0,0 +1,15 @@
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OSMO_CFLAGS:=$(shell pkg-config --cflags libosmocore libosmoctrl libosmotrau)
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OSMO_LIBS:=$(shell pkg-config --libs libosmocore libosmoctrl libosmotrau)
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CFLAGS:= -g -Wall $(OSMO_CFLAGS)
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LIBS:= $(OSMO_LIBS)
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rtpsource: rtpsource.o ctrl_if.o
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$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
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%.o: %.c
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$(CC) $(CFLAGS) -o $@ -c $^
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clean:
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@rm -f rtpsource *.o
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@ -0,0 +1,131 @@
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/* CTRL interface of rtpsource program
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*
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* (C) 2020 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <osmocom/ctrl/control_cmd.h>
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#include "internal.h"
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CTRL_CMD_DEFINE_WO_NOVRF(rtp_create, "rtp_create");
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static int set_rtp_create(struct ctrl_cmd *cmd, void *data)
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{
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struct rtp_connection *conn;
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const char *cname = cmd->value;
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if (find_connection_by_cname(g_rss, cname)) {
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cmd->reply = "Connection already exists for cname";
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return CTRL_CMD_ERROR;
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}
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conn = create_connection(g_rss, cname);
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if (!conn) {
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cmd->reply = "Error creating RTP connection";
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return CTRL_CMD_ERROR;
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}
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/* Respond */
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cmd->reply = talloc_asprintf(cmd, "%s,%s,%d", conn->cname, conn->local_host, conn->local_port);
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return CTRL_CMD_REPLY;
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}
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CTRL_CMD_DEFINE_WO_NOVRF(rtp_connect, "rtp_connect");
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static int set_rtp_connect(struct ctrl_cmd *cmd, void *data)
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{
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struct rtp_connection *conn;
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const char *cname, *remote_host, *remote_port, *pt;
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char *tmp, *saveptr;
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int rc;
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tmp = talloc_strdup(cmd, cmd->value);
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OSMO_ASSERT(tmp);
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/* FIXME: parse command */
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cname = strtok_r(tmp, ",", &saveptr);
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remote_host = strtok_r(NULL, ",", &saveptr);
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remote_port = strtok_r(NULL, ",", &saveptr);
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pt = strtok_r(NULL, ",", &saveptr);
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if (!cname || !remote_host || !remote_port || !pt) {
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cmd->reply = "Format is cname,remote_host,remote_port,pt";
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talloc_free(tmp);
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return CTRL_CMD_ERROR;
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}
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conn = find_connection_by_cname(g_rss, cname);
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if (!conn) {
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cmd->reply = "Error finding RTP connection for connect";
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talloc_free(tmp);
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return CTRL_CMD_ERROR;
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}
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rc = connect_connection(conn, remote_host, atoi(remote_port), atoi(pt));
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if (rc < 0) {
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cmd->reply = "Error binding RTP connection";
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talloc_free(tmp);
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return CTRL_CMD_ERROR;
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}
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/* Respond */
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talloc_free(tmp);
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cmd->reply = talloc_asprintf(cmd, "%s,%s,%d,%d", conn->cname, conn->remote_host,
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conn->remote_port, conn->rtp_pt);
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return CTRL_CMD_REPLY;
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}
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CTRL_CMD_DEFINE_WO_NOVRF(rtp_delete, "rtp_delete");
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static int set_rtp_delete(struct ctrl_cmd *cmd, void *data)
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{
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struct rtp_connection *conn;
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const char *cname = cmd->value;
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conn = find_connection_by_cname(g_rss, cname);
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if (!conn) {
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cmd->reply = "Error finding RTP connection for delete";
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return CTRL_CMD_ERROR;
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}
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cmd->reply = talloc_asprintf(cmd, "%s", conn->cname);
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delete_connection(conn);
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/* Respond */
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return CTRL_CMD_REPLY;
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}
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int rtpsource_ctrl_cmds_install(void)
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{
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int rc;
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rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_rtp_create);
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if (rc)
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goto end;
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rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_rtp_connect);
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if (rc)
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goto end;
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rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_rtp_delete);
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if (rc)
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goto end;
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end:
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return rc;
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}
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@ -0,0 +1,46 @@
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#pragma once
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#include <stdint.h>
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#include <stdlib.h>
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#include <osmocom/trau/osmo_ortp.h>
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#include <osmocom/ctrl/control_if.h>
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enum {
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DMAIN,
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};
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struct rtp_connection {
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struct llist_head list;
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struct osmo_rtp_socket *rtp_sock;
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char *cname;
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char *local_host;
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uint16_t local_port;
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char *remote_host;
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uint16_t remote_port;
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uint8_t rtp_pt;
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};
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struct rtpsource_state {
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struct llist_head connections;
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struct osmo_fd timer_ofd;
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struct ctrl_handle *ctrl;
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};
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extern struct rtpsource_state *g_rss;
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struct rtp_connection *find_connection_by_cname(struct rtpsource_state *rss, const char *cname);
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struct rtp_connection *create_connection(struct rtpsource_state *rss, const char *cname);
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int connect_connection(struct rtp_connection *conn, const char *remote_host,
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uint16_t remote_port, uint8_t pt);
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void delete_connection(struct rtp_connection *conn);
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int rtpsource_ctrl_cmds_install(void);
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#define CLOGP(conn, subsys, lvl, fmt, args ...) \
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LOGP(subsys, lvl, "[%s]: " fmt, (conn)->cname, ## args)
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@ -0,0 +1,248 @@
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/* rtpsource program: RTP load generator
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*
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* This program binds a CTRL interface to 127.0.0.1:11111 and waits for
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* an external entity to issue CTRL commands, such as rtp_create, rtp_connect
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* and rtp_delete. Those commands are used to create+bind, connect and destroy
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* local RTP connections.
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*
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* Each connection will send a RTP frame with dummy payload every 20ms.
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*
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* This is useful for load testing scenarios
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*
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* (C) 2020 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/signal.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/stats.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/ctrl/control_if.h>
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#include <osmocom/trau/osmo_ortp.h>
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#include "internal.h"
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/* find a connection based on its CNAME */
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struct rtp_connection *find_connection_by_cname(struct rtpsource_state *rss, const char *cname)
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{
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struct rtp_connection *conn;
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llist_for_each_entry(conn, &rss->connections, list) {
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if (!strcmp(cname, conn->cname))
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return conn;
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}
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return NULL;
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}
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/* create a new RTP connection for given CNAME; includes binding of local RTP port */
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struct rtp_connection *create_connection(struct rtpsource_state *rss, const char *cname)
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{
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struct rtp_connection *conn;
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const char *host;
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int port;
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int rc;
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OSMO_ASSERT(!find_connection_by_cname(rss, cname));
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conn = talloc_zero(rss, struct rtp_connection);
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OSMO_ASSERT(conn);
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conn->cname = talloc_strdup(conn, cname);
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conn->rtp_sock = osmo_rtp_socket_create(conn, OSMO_RTP_F_POLL);
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OSMO_ASSERT(conn->rtp_sock);
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rc = osmo_rtp_socket_bind(conn->rtp_sock, "127.23.23.23", -1);
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OSMO_ASSERT(rc == 0);
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rc = osmo_rtp_get_bound_addr(conn->rtp_sock, &host, &port);
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OSMO_ASSERT(rc == 0);
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OSMO_ASSERT(port >= 0 && port <= 0xffff);
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conn->local_port = port;
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conn->local_host = talloc_strdup(conn, host);
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osmo_rtp_set_source_desc(conn->rtp_sock, conn->cname, "rtpsource", NULL, NULL,
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NULL, "osmo-rtpsource", NULL);
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llist_add_tail(&conn->list, &rss->connections);
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CLOGP(conn, DMAIN, LOGL_INFO, "Created RTP connection; local=%s:%u\n",
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conn->local_host, conn->local_port);
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return conn;
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}
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/* connect a RTP connection to a given remote peer */
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int connect_connection(struct rtp_connection *conn, const char *remote_host,
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uint16_t remote_port, uint8_t pt)
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{
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int rc;
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conn->remote_host = talloc_strdup(conn, remote_host);
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conn->remote_port = remote_port;
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conn->rtp_pt = pt;
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rc = osmo_rtp_socket_connect(conn->rtp_sock, conn->remote_host, conn->remote_port);
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OSMO_ASSERT(rc == 0);
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rc = osmo_rtp_socket_set_pt(conn->rtp_sock, conn->rtp_pt);
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OSMO_ASSERT(rc == 0);
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CLOGP(conn, DMAIN, LOGL_INFO, "Connected RTP connection; remote=%s:%u\n",
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conn->remote_host, conn->remote_port);
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return 0;
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}
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/* delete a RTP connection */
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void delete_connection(struct rtp_connection *conn)
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{
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char *prefix = talloc_asprintf(conn, "[%s]: STATS: ", conn->cname);
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osmo_rtp_socket_log_stats(conn->rtp_sock, DMAIN, LOGL_INFO, prefix);
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talloc_free(prefix);
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osmo_rtp_socket_free(conn->rtp_sock);
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conn->rtp_sock = NULL;
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CLOGP(conn, DMAIN, LOGL_INFO, "Deleted RTP connection\n");
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llist_del(&conn->list);
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talloc_free(conn);
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}
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/* called every 20ms at timerfd expiration */
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static int timerfd_cb(struct osmo_fd *ofd, unsigned int priv_nr)
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{
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struct rtpsource_state *rss = ofd->data;
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struct rtp_connection *conn;
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uint64_t expire_count;
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int rc;
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/* read from timerfd: number of expirations of periodic timer */
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rc = read(ofd->fd, (void *) &expire_count, sizeof(expire_count));
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if (rc < 0 && errno == EAGAIN)
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return 0;
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if (expire_count > 1)
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LOGP(DMAIN, LOGL_ERROR, "Timer expire_count=%"PRIu64" != 1\n", expire_count);
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/* iterate over all RTP connections and send one frame each */
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llist_for_each_entry(conn, &rss->connections, list) {
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int i;
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/* TODO: have different sources (file+name, ...) */
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uint8_t payload[33];
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memset(payload, 0, sizeof(payload));
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payload[0] = payload[0] & 0x0f | 0xD0; /* mask in first four bit for FR */
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osmo_rtp_send_frame_ext(conn->rtp_sock, payload, sizeof(payload), 160, false);
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/* make sure RTP clock advances correctly, even if we missed transmit of some */
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for (i = 1; i < expire_count; i++)
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osmo_rtp_skipped_frame(conn->rtp_sock, 160);
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}
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return 0;
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}
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static const struct log_info_cat rtpsource_cat[] = {
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[DMAIN] = {
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.name = "DMAIN",
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.description ="Main Program",
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.enabled = 1,
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.loglevel = LOGL_INFO,
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},
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};
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const struct log_info rtpsource_log_info = {
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.filter_fn = NULL,
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.cat = rtpsource_cat,
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.num_cat = ARRAY_SIZE(rtpsource_cat),
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};
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struct rtpsource_state *g_rss;
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||||||
|
static void *g_tall_ctx;
|
||||||
|
|
||||||
|
static void signal_handler(int signal)
|
||||||
|
{
|
||||||
|
switch (signal) {
|
||||||
|
case SIGABRT:
|
||||||
|
/* in case of abort, we want to obtain a talloc report
|
||||||
|
* and then return to the caller, who will abort the process */
|
||||||
|
case SIGUSR1:
|
||||||
|
talloc_report_full(g_tall_ctx, stderr);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(int argc, char **argv)
|
||||||
|
{
|
||||||
|
struct timespec interval = {
|
||||||
|
.tv_sec = 0,
|
||||||
|
.tv_nsec = 20*1000*1000, /* every 20ms */
|
||||||
|
};
|
||||||
|
int rc;
|
||||||
|
|
||||||
|
signal(SIGUSR1, &signal_handler);
|
||||||
|
signal(SIGABRT, &signal_handler);
|
||||||
|
|
||||||
|
talloc_enable_null_tracking();
|
||||||
|
g_tall_ctx = talloc_named_const(NULL, 1, "rtpsource");
|
||||||
|
OSMO_ASSERT(g_tall_ctx);
|
||||||
|
|
||||||
|
msgb_talloc_ctx_init(g_tall_ctx, 0);
|
||||||
|
//osmo_signal_talloc_ctx_init(g_tall_ctx);
|
||||||
|
osmo_init_logging2(g_tall_ctx, &rtpsource_log_info);
|
||||||
|
osmo_fsm_log_timeouts(true);
|
||||||
|
osmo_fsm_log_addr(true);
|
||||||
|
osmo_stats_init(g_tall_ctx);
|
||||||
|
osmo_rtp_init(g_tall_ctx);
|
||||||
|
|
||||||
|
g_rss = talloc_zero(g_tall_ctx, struct rtpsource_state);
|
||||||
|
OSMO_ASSERT(g_rss);
|
||||||
|
INIT_LLIST_HEAD(&g_rss->connections);
|
||||||
|
|
||||||
|
/* Create CTRL interface */
|
||||||
|
//g_rss->ctrl = ctrl_interface_setup_dynip(g_rss, ctrl_vty_get_bind_addr(), 11111, NULL);
|
||||||
|
g_rss->ctrl = ctrl_interface_setup_dynip(g_rss, "127.0.0.1", 11111, NULL);
|
||||||
|
OSMO_ASSERT(g_rss->ctrl);
|
||||||
|
rc = rtpsource_ctrl_cmds_install();
|
||||||
|
OSMO_ASSERT(rc == 0);
|
||||||
|
|
||||||
|
/* create + register timerfd to expire every 20ms */
|
||||||
|
g_rss->timer_ofd.fd = -1;
|
||||||
|
rc = osmo_timerfd_setup(&g_rss->timer_ofd, timerfd_cb, g_rss);
|
||||||
|
OSMO_ASSERT(rc == 0);
|
||||||
|
|
||||||
|
rc = osmo_timerfd_schedule(&g_rss->timer_ofd, NULL, &interval);
|
||||||
|
OSMO_ASSERT(rc == 0);
|
||||||
|
|
||||||
|
while (1) {
|
||||||
|
osmo_select_main(0);
|
||||||
|
}
|
||||||
|
}
|
Loading…
Reference in New Issue