2 node_sim_peer.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.
33 #include "../common/common_handlers.h"
34 #include "../common/test_step.h"
35 #include "../common/mesh_event_handler.h"
36 #include "../../utils.h"
38 #define CMD_LINE_ARG_NODENAME 1
39 #define CMD_LINE_ARG_DEVCLASS 2
40 #define CMD_LINE_ARG_CLIENTID 3
41 #define CMD_LINE_ARG_IMPORTSTR 4
42 #define CMD_LINE_ARG_INVITEURL 5
43 #define CHANNEL_PORT 1234
45 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len);
46 static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len);
48 static int client_id = -1;
49 static meshlink_handle_t *mesh = NULL;
51 static struct sync_flag peer_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
52 static struct sync_flag start_test = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
53 static struct sync_flag app_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
54 static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
55 static struct sync_flag channel_data_recieved = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
56 static meshlink_channel_t *ch_app1node1 = NULL;
58 static void send_event(mesh_event_t event) {
61 for(attempts = 0; attempts < 5; attempts += 1) {
62 if(mesh_event_sock_send(client_id, event, NULL, 0)) {
72 static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len) {
76 assert(port == CHANNEL_PORT);
78 fprintf(stderr, "\tapp1node2 got channel request from %s\n", channel->node->name);
80 if(!strcmp(channel->node->name, "corenode1")) {
81 meshlink_set_channel_receive_cb(mesh, channel, channel_receive_cb);
90 /* channel receive callback */
91 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
97 fprintf(stderr, "\tapp1node2 got error from %s at %lu\n", channel->node->name, time(NULL));
98 send_event(ERR_NETWORK);
102 memcpy(data, dat, len);
104 fprintf(stderr, "\tapp1node2 got message from %s as %s\n", channel->node->name, data);
106 if(!strcmp(channel->node->name, "corenode1")) {
107 if(!memcmp(dat, "Channel Message", len)) {
108 set_sync_flag(&channel_data_recieved, true);
109 } else if(!memcmp(dat, "failure", 7)) {
112 } else if(!strcmp(channel->node->name, "app1node1")) {
113 if(!memcmp(dat, "Channel Message", len)) {
114 ch_app1node1 = channel;
115 set_sync_flag(&channel_data_recieved, true);
116 } else if(!memcmp(dat, "failure", 7)) {
126 static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
127 char *message = "Channel Message";
128 char *node = (char *)channel->node->name;
130 meshlink_set_channel_poll_cb(mesh, channel, NULL);
131 fprintf(stderr, "\tapp1node2's Channel request has been accepted by %s at : %lu\n", node, time(NULL));
132 set_sync_flag(&channel_opened, true);
133 assert(meshlink_channel_send(mesh, channel, message, strlen(message)) >= 0);
138 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
141 if(!strcasecmp(node->name, "corenode1")) {
143 fprintf(stderr, "\tNode corenode1 became reachable\n");
144 set_sync_flag(&peer_reachable, true);
146 } else if(!strcasecmp(node->name, "app1node1")) {
148 fprintf(stderr, "\tNode app1node1 became reachable\n");
149 set_sync_flag(&app_reachable, true);
156 void mesh_start_test_handler(int signum) {
159 fprintf(stderr, "Starting test in app1node2\n");
160 set_sync_flag(&start_test, true);
163 int main(int argc, char *argv[]) {
167 struct timeval main_loop_wait = { 2, 0 };
168 meshlink_channel_t *channel = NULL;
169 meshlink_node_t *core_node = NULL;
170 meshlink_node_t **node_handles = NULL;
172 fprintf(stderr, "\tMesh node 'app1node2' starting up........\n");
174 // Import mesh event handler
176 if((argv[CMD_LINE_ARG_CLIENTID]) && (argv[CMD_LINE_ARG_IMPORTSTR])) {
177 client_id = atoi(argv[CMD_LINE_ARG_CLIENTID]);
178 mesh_event_sock_connect(argv[CMD_LINE_ARG_IMPORTSTR]);
181 // Setup required signals
184 signal(SIGIO, mesh_start_test_handler);
186 // Run peer node instance
188 mesh = meshlink_open("app1node2conf", argv[CMD_LINE_ARG_NODENAME],
189 "test_channel_conn", atoi(argv[CMD_LINE_ARG_DEVCLASS]));
191 meshlink_set_log_cb(mesh, MESHLINK_DEBUG, meshlink_callback_logger);
192 meshlink_set_channel_accept_cb(mesh, channel_accept);
193 meshlink_set_node_status_cb(mesh, node_status_cb);
195 if(argv[CMD_LINE_ARG_INVITEURL]) {
196 assert(meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]));
199 assert(meshlink_start(mesh));
201 send_event(NODE_STARTED);
203 // Wait for peer node to join
205 assert(wait_sync_flag(&peer_reachable, 15));
206 send_event(NODE_JOINED);
208 while(false == wait_sync_flag(&start_test, 10));
210 // Open a channel to peer node
211 core_node = meshlink_get_node(mesh, "corenode1");
213 fprintf(stderr, "\tapp1node2 Sending Channel request to corenode1 at : %lu\n", time(NULL));
214 channel = meshlink_channel_open(mesh, core_node, CHANNEL_PORT,
215 channel_receive_cb, NULL, 0);
216 meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
217 assert(wait_sync_flag(&channel_opened, 15));
218 send_event(CHANNEL_OPENED);
220 assert(wait_sync_flag(&channel_data_recieved, 30));
221 send_event(CHANNEL_DATA_RECIEVED);
223 // Open a channel to peer node
224 channel_opened.flag = false;
225 channel_data_recieved.flag = false;
227 assert(wait_sync_flag(&app_reachable, 60));
229 core_node = meshlink_get_node(mesh, "app1node1");
231 fprintf(stderr, "\tapp1node2 Sending Channel request to app1node1 at : %lu\n", time(NULL));
232 channel = meshlink_channel_open(mesh, core_node, CHANNEL_PORT,
233 channel_receive_cb, NULL, 0);
234 meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
235 assert(wait_sync_flag(&channel_opened, 15));
236 send_event(CHANNEL_OPENED);
238 assert(wait_sync_flag(&channel_data_recieved, 30));
239 send_event(CHANNEL_DATA_RECIEVED);
242 node_handles = meshlink_get_all_nodes(mesh, NULL, &num_nodes);
243 fprintf(stderr, "\tGot %lu nodes in list with error : %s\n", num_nodes, meshlink_strerror(meshlink_errno));
244 assert(node_handles);
246 for(i = 0; i < num_nodes; i++) {
247 fprintf(stderr, "\tChecking the node : %s\n", node_handles[i]->name);
249 if(0 == strcmp(node_handles[i]->name, "app2node1")) {
250 send_event(SIG_ABORT);
252 } else if(0 == strcmp(node_handles[i]->name, "app2node2")) {
253 send_event(SIG_ABORT);
258 meshlink_node_t *app1_node1 = meshlink_get_node(mesh, "app1node1");
261 send_event(SIG_ABORT);
265 channel_data_recieved.flag = false;
266 assert(meshlink_blacklist(mesh, app1_node1));
270 assert(meshlink_channel_send(mesh, ch_app1node1, "test", 5) == 5);
272 wait_sync_flag(&channel_data_recieved, 30);
274 if(true == channel_data_recieved.flag) {
275 send_event(SIG_ABORT);
279 channel_data_recieved.flag = false;
280 assert(meshlink_whitelist(mesh, app1_node1));
284 assert(meshlink_channel_send(mesh, ch_app1node1, "Channel Message", strlen("Channel Message")) == strlen("Channel Message"));
286 assert(wait_sync_flag(&channel_data_recieved, 60));
288 send_event(MESH_EVENT_COMPLETED);
290 // All test steps executed - wait for signals to stop/start or close the mesh
292 while(test_running) {
293 select(1, NULL, NULL, NULL, &main_loop_wait);
296 meshlink_close(mesh);