2 node_sim_nut.c -- Implementation of Node Simulation for Meshlink Testing
3 for meta connection test case 01 - re-connection of
4 two nodes when relay node goes down
5 Copyright (C) 2018 Guus Sliepen <guus@meshlink.io>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
32 #include "../common/common_handlers.h"
33 #include "../common/test_step.h"
34 #include "../common/mesh_event_handler.h"
35 #include "../../utils.h"
37 #define CMD_LINE_ARG_NODENAME 1
38 #define CMD_LINE_ARG_DEVCLASS 2
39 #define CMD_LINE_ARG_CLIENTID 3
40 #define CMD_LINE_ARG_IMPORTSTR 4
41 #define CMD_LINE_ARG_INVITEURL 5
42 #define CHANNEL_PORT 1234
44 static int client_id = -1;
46 static struct sync_flag peer_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
47 static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
48 static struct sync_flag peer_unreachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
49 static struct sync_flag sigusr_received = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
51 static void send_event(mesh_event_t event);
52 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable);
54 static void mesh_siguser1_signal_handler(int sig_num) {
57 set_sync_flag(&sigusr_received, true);
61 static void send_event(mesh_event_t event) {
64 for(attempts = 0; attempts < 5; attempts += 1) {
65 if(mesh_event_sock_send(client_id, event, NULL, 0)) {
75 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
78 if(!strcasecmp(node->name, "peer")) {
80 set_sync_flag(&peer_reachable, true);
82 set_sync_flag(&peer_unreachable, true);
89 static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
91 meshlink_set_channel_poll_cb(mesh, channel, NULL);
92 assert(meshlink_channel_send(mesh, channel, "test", 5) >= 0);
96 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
99 if(!strcmp(channel->node->name, "peer")) {
100 if(len == 5 && !memcmp(dat, "reply", 5)) {
101 set_sync_flag(&channel_opened, true);
108 int main(int argc, char *argv[]) {
111 struct timeval main_loop_wait = { 2, 0 };
113 // Import mesh event handler
115 if((argv[CMD_LINE_ARG_CLIENTID]) && (argv[CMD_LINE_ARG_IMPORTSTR])) {
116 client_id = atoi(argv[CMD_LINE_ARG_CLIENTID]);
117 mesh_event_sock_connect(argv[CMD_LINE_ARG_IMPORTSTR]);
120 // Setup required signals
123 signal(SIGUSR1, mesh_siguser1_signal_handler);
125 // Execute test steps
127 meshlink_handle_t *mesh = meshlink_open("testconf", argv[CMD_LINE_ARG_NODENAME],
128 "test_channel_conn", atoi(argv[CMD_LINE_ARG_DEVCLASS]));
130 meshlink_set_log_cb(mesh, MESHLINK_DEBUG, meshlink_callback_logger);
131 meshlink_set_node_status_cb(mesh, node_status_cb);
133 if(argv[CMD_LINE_ARG_INVITEURL]) {
134 assert(meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]));
137 assert(meshlink_start(mesh));
139 // Wait for peer node to join
141 assert(wait_sync_flag(&peer_reachable, 30));
142 send_event(NODE_JOINED);
144 // Open a channel to peer node
146 meshlink_node_t *peer_node = meshlink_get_node(mesh, "peer");
148 meshlink_channel_t *channel = meshlink_channel_open(mesh, peer_node, CHANNEL_PORT,
149 channel_receive_cb, NULL, 0);
150 meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
152 assert(wait_sync_flag(&channel_opened, 10));
153 send_event(CHANNEL_OPENED);
155 peer_unreachable.flag = false;
156 peer_reachable.flag = false;
157 assert(wait_sync_flag(&sigusr_received, 10));
159 assert(wait_sync_flag(&peer_unreachable, 100));
160 send_event(NODE_UNREACHABLE);
162 assert(wait_sync_flag(&peer_reachable, 100));
163 send_event(NODE_REACHABLE);
165 assert(meshlink_channel_send(mesh, channel, "after", 6) >= 0);
167 // All test steps executed - wait for signals to stop/start or close the mesh
169 while(test_running) {
170 select(1, NULL, NULL, NULL, &main_loop_wait);
173 meshlink_close(mesh);