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.
27 #include "../common/common_handlers.h"
28 #include "../common/test_step.h"
29 #include "../common/mesh_event_handler.h"
30 #include "../../utils.h"
32 #define CMD_LINE_ARG_NODENAME 1
33 #define CMD_LINE_ARG_DEVCLASS 2
34 #define CMD_LINE_ARG_CLIENTID 3
35 #define CMD_LINE_ARG_IMPORTSTR 4
36 #define CMD_LINE_ARG_INVITEURL 5
37 #define CHANNEL_PORT 1234
39 static int client_id = -1;
41 static struct sync_flag peer_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
42 static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
43 static struct sync_flag peer_unreachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
44 static struct sync_flag sigusr_received = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
46 static void send_event(mesh_event_t event);
47 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable);
49 static void mesh_siguser1_signal_handler(int sig_num) {
52 set_sync_flag(&sigusr_received, true);
56 static void send_event(mesh_event_t event) {
59 for(attempts = 0; attempts < 5; attempts += 1) {
60 if(mesh_event_sock_send(client_id, event, NULL, 0)) {
70 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
74 if(!strcasecmp(node->name, "peer")) {
76 set_sync_flag(&peer_reachable, true);
78 set_sync_flag(&peer_unreachable, true);
85 static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
87 meshlink_set_channel_poll_cb(mesh, channel, NULL);
88 assert(meshlink_channel_send(mesh, channel, "test", 5) >= 0);
92 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
96 send_event(ERR_NETWORK);
100 if(!strcmp(channel->node->name, "peer")) {
101 if(len == 5 && !memcmp(dat, "reply", 5)) {
102 set_sync_flag(&channel_opened, true);
109 int main(int argc, char *argv[]) {
112 struct timeval main_loop_wait = { 5, 0 };
114 // Import mesh event handler
116 if((argv[CMD_LINE_ARG_CLIENTID]) && (argv[CMD_LINE_ARG_IMPORTSTR])) {
117 client_id = atoi(argv[CMD_LINE_ARG_CLIENTID]);
118 mesh_event_sock_connect(argv[CMD_LINE_ARG_IMPORTSTR]);
121 // Setup required signals
124 signal(SIGUSR1, mesh_siguser1_signal_handler);
126 // Execute test steps
128 meshlink_handle_t *mesh = meshlink_open("testconf", argv[CMD_LINE_ARG_NODENAME],
129 "test_channel_conn", atoi(argv[CMD_LINE_ARG_DEVCLASS]));
131 meshlink_set_log_cb(mesh, MESHLINK_DEBUG, meshlink_callback_logger);
132 meshlink_set_node_status_cb(mesh, node_status_cb);
134 if(argv[CMD_LINE_ARG_INVITEURL]) {
135 assert(meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]));
138 assert(meshlink_start(mesh));
140 // 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);
171 assert(meshlink_channel_send(mesh, channel, "ping", 6) >= 0);
174 meshlink_close(mesh);