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.
28 #include "../common/common_handlers.h"
29 #include "../common/test_step.h"
30 #include "../common/mesh_event_handler.h"
31 #include "../../utils.h"
33 #define CMD_LINE_ARG_NODENAME 1
34 #define CMD_LINE_ARG_DEVCLASS 2
35 #define CMD_LINE_ARG_CLIENTID 3
36 #define CMD_LINE_ARG_IMPORTSTR 4
37 #define CMD_LINE_ARG_INVITEURL 5
38 #define CHANNEL_PORT 1234
40 static int client_id = -1;
42 static struct sync_flag peer_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
43 static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
44 static struct sync_flag channel_closed = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
45 static struct sync_flag sigusr_received = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
47 static void send_event(mesh_event_t event);
48 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
50 static void mesh_siguser1_signal_handler(int sig_num);
52 static void mesh_siguser1_signal_handler(int sig_num) {
53 set_sync_flag(&sigusr_received, true);
57 static void send_event(mesh_event_t event) {
58 bool send_ret = false;
61 for(attempts = 0; attempts < 5; attempts += 1) {
62 send_ret = mesh_event_sock_send(client_id, event, NULL, 0);
72 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
74 fprintf(stderr, "\n\n\n NODE STATUS CB : %s is %d\n\n\n\n", node->name, reachable);
76 if(!strcasecmp(node->name, "peer") && reachable) {
77 set_sync_flag(&peer_reachable, true);
83 static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
85 meshlink_set_channel_poll_cb(mesh, channel, NULL);
86 assert(meshlink_channel_send(mesh, channel, "test", 5) >= 0);
90 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
91 fprintf(stderr, "\n\n\n LEN = %u & DATA = %s in RECV CB\n\n\n\n", len, (char *)dat);
94 set_sync_flag(&channel_closed, true);
95 send_event(ERR_NETWORK);
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[]) {
109 struct timeval main_loop_wait = { 2, 0 };
110 struct timespec timeout = {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);
154 fprintf(stderr, "\n\n\nChannel opened, Waiting for SIGUSR1\n\n\n\n");
155 assert(wait_sync_flag(&sigusr_received, 10));
157 fprintf(stderr, "\n\n\nChannel sending, got SIGUSR1\n\n\n\n");
159 assert(meshlink_channel_send(mesh, channel, "after", 6) >= 0);
161 fprintf(stderr, "\n\n\nWaiting for close\n\n\n\n");
163 assert(wait_sync_flag(&channel_closed, 140));
165 fprintf(stderr, "\n\n\nCHANNEL CLOSED\n\n\n\n");
167 // All test steps executed - wait for signals to stop/start or close the mesh
168 while(test_running) {
169 select(1, NULL, NULL, NULL, &main_loop_wait);
172 meshlink_close(mesh);