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.
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 void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len);
41 static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len);
43 static int client_id = -1;
44 static meshlink_handle_t *mesh = NULL;
46 static struct sync_flag peer_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
47 static struct sync_flag start_test = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
48 static struct sync_flag app_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
49 static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
50 static struct sync_flag channel_data_recieved = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER, .flag = false};
51 static meshlink_channel_t *ch_app1node1 = NULL;
53 static void send_event(mesh_event_t event) {
56 for(attempts = 0; attempts < 5; attempts += 1) {
57 if(mesh_event_sock_send(client_id, event, NULL, 0)) {
67 static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len) {
71 assert(port == CHANNEL_PORT);
73 fprintf(stderr, "\tapp1node2 got channel request from %s\n", channel->node->name);
75 if(!strcmp(channel->node->name, "corenode1")) {
76 meshlink_set_channel_receive_cb(mesh, channel, channel_receive_cb);
85 /* channel receive callback */
86 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
90 fprintf(stderr, "\tapp1node2 got error from %s at %lu\n", channel->node->name, time(NULL));
91 send_event(ERR_NETWORK);
95 memcpy(data, dat, len);
97 fprintf(stderr, "\tapp1node2 got message from %s as %s\n", channel->node->name, data);
99 if(!strcmp(channel->node->name, "corenode1")) {
100 if(!memcmp(dat, "Channel Message", len)) {
101 set_sync_flag(&channel_data_recieved, true);
102 } else if(!memcmp(dat, "failure", 7)) {
105 } else if(!strcmp(channel->node->name, "app1node1")) {
106 if(!memcmp(dat, "Channel Message", len)) {
107 ch_app1node1 = channel;
108 set_sync_flag(&channel_data_recieved, true);
109 } else if(!memcmp(dat, "failure", 7)) {
119 static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
120 char *message = "Channel Message";
121 char *node = (char *)channel->node->name;
123 meshlink_set_channel_poll_cb(mesh, channel, NULL);
124 fprintf(stderr, "\tapp1node2's Channel request has been accepted by %s at : %lu\n", node, time(NULL));
125 set_sync_flag(&channel_opened, true);
126 assert(meshlink_channel_send(mesh, channel, message, strlen(message)) >= 0);
131 static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
133 if(!strcasecmp(node->name, "corenode1")) {
135 fprintf(stderr, "\tNode corenode1 became reachable\n");
136 set_sync_flag(&peer_reachable, true);
138 } else if(!strcasecmp(node->name, "app1node1")) {
140 fprintf(stderr, "\tNode app1node1 became reachable\n");
141 set_sync_flag(&app_reachable, true);
148 void mesh_start_test_handler(int a) {
149 fprintf(stderr, "Starting test in app1node2\n");
150 set_sync_flag(&start_test, true);
153 int main(int argc, char *argv[]) {
155 struct timeval main_loop_wait = { 2, 0 };
156 meshlink_channel_t *channel = NULL;
157 meshlink_node_t *core_node = NULL;
158 meshlink_node_t **node_handles = NULL;
159 ssize_t retvalue = -1;
161 fprintf(stderr, "\tMesh node 'app1node2' starting up........\n");
163 // Import mesh event handler
165 if((argv[CMD_LINE_ARG_CLIENTID]) && (argv[CMD_LINE_ARG_IMPORTSTR])) {
166 client_id = atoi(argv[CMD_LINE_ARG_CLIENTID]);
167 mesh_event_sock_connect(argv[CMD_LINE_ARG_IMPORTSTR]);
170 // Setup required signals
173 signal(SIGIO, mesh_start_test_handler);
175 // Run peer node instance
177 mesh = meshlink_open("app1node2conf", argv[CMD_LINE_ARG_NODENAME],
178 "test_channel_conn", atoi(argv[CMD_LINE_ARG_DEVCLASS]));
180 meshlink_set_log_cb(mesh, MESHLINK_DEBUG, meshlink_callback_logger);
181 meshlink_set_channel_accept_cb(mesh, channel_accept);
182 meshlink_set_node_status_cb(mesh, node_status_cb);
184 if(argv[CMD_LINE_ARG_INVITEURL]) {
185 assert(meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]));
188 assert(meshlink_start(mesh));
190 send_event(NODE_STARTED);
192 // Wait for peer node to join
194 assert(wait_sync_flag(&peer_reachable, 15));
195 send_event(NODE_JOINED);
197 while(false == wait_sync_flag(&start_test, 10));
199 // Open a channel to peer node
200 core_node = meshlink_get_node(mesh, "corenode1");
202 fprintf(stderr, "\tapp1node2 Sending Channel request to corenode1 at : %lu\n", time(NULL));
203 channel = meshlink_channel_open(mesh, core_node, CHANNEL_PORT,
204 channel_receive_cb, NULL, 0);
205 meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
206 assert(wait_sync_flag(&channel_opened, 15));
207 send_event(CHANNEL_OPENED);
209 assert(wait_sync_flag(&channel_data_recieved, 30));
210 send_event(CHANNEL_DATA_RECIEVED);
212 // Open a channel to peer node
213 channel_opened.flag = false;
214 channel_data_recieved.flag = false;
216 assert(wait_sync_flag(&app_reachable, 60));
218 core_node = meshlink_get_node(mesh, "app1node1");
220 fprintf(stderr, "\tapp1node2 Sending Channel request to app1node1 at : %lu\n", time(NULL));
221 channel = meshlink_channel_open(mesh, core_node, CHANNEL_PORT,
222 channel_receive_cb, NULL, 0);
223 meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
224 assert(wait_sync_flag(&channel_opened, 15));
225 send_event(CHANNEL_OPENED);
227 assert(wait_sync_flag(&channel_data_recieved, 30));
228 send_event(CHANNEL_DATA_RECIEVED);
231 node_handles = meshlink_get_all_nodes(mesh, NULL, &num_nodes);
232 fprintf(stderr, "\tGot %lu nodes in list with error : %s\n", num_nodes, meshlink_strerror(meshlink_errno));
233 assert(node_handles);
235 for(i = 0; i < num_nodes; i++) {
236 fprintf(stderr, "\tChecking the node : %s\n", node_handles[i]->name);
238 if(0 == strcmp(node_handles[i]->name, "app2node1")) {
239 send_event(SIG_ABORT);
241 } else if(0 == strcmp(node_handles[i]->name, "app2node2")) {
242 send_event(SIG_ABORT);
247 meshlink_node_t *app1_node1 = meshlink_get_node(mesh, "app1node1");
250 send_event(SIG_ABORT);
254 channel_data_recieved.flag = false;
255 meshlink_blacklist(mesh, app1_node1);
259 meshlink_channel_send(mesh, ch_app1node1, "test", 5);
261 wait_sync_flag(&channel_data_recieved, 30);
263 if(true == channel_data_recieved.flag) {
264 send_event(SIG_ABORT);
268 channel_data_recieved.flag = false;
269 meshlink_whitelist(mesh, app1_node1);
273 meshlink_channel_send(mesh, ch_app1node1, "Channel Message", strlen("Channel Message"));
275 assert(wait_sync_flag(&channel_data_recieved, 60));
277 send_event(MESH_EVENT_COMPLETED);
279 // All test steps executed - wait for signals to stop/start or close the mesh
281 while(test_running) {
282 select(1, NULL, NULL, NULL, &main_loop_wait);
285 meshlink_close(mesh);