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.
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 void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len);
40 static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len);
42 static struct sync_flag sigusr = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
43 static int client_id = -1;
45 static void mesh_siguser1_signal_handler(int sig_num) {
46 set_sync_flag(&sigusr, true);
51 static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len) {
55 assert(port == CHANNEL_PORT);
57 if(!strcmp(channel->node->name, "nut")) {
58 meshlink_set_channel_receive_cb(mesh, channel, channel_receive_cb);
67 /* channel receive callback */
68 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
75 mesh_event_sock_send(client_id, ERR_NETWORK, NULL, 0);
79 if(!strcmp(channel->node->name, "nut") && !memcmp(dat, "test", 5)) {
80 assert(meshlink_channel_send(mesh, channel, "reply", 5) >= 0);
86 int main(int argc, char *argv[]) {
87 struct timeval main_loop_wait = { 2, 0 };
89 // Import mesh event handler
91 if((argv[CMD_LINE_ARG_CLIENTID]) && (argv[CMD_LINE_ARG_IMPORTSTR])) {
92 client_id = atoi(argv[CMD_LINE_ARG_CLIENTID]);
93 mesh_event_sock_connect(argv[CMD_LINE_ARG_IMPORTSTR]);
96 // Setup required signals
99 signal(SIGUSR1, mesh_siguser1_signal_handler);
101 // Run peer node instance
103 meshlink_handle_t *mesh = meshlink_open("testconf", argv[CMD_LINE_ARG_NODENAME],
104 "test_channel_conn", atoi(argv[CMD_LINE_ARG_DEVCLASS]));
106 meshlink_set_log_cb(mesh, MESHLINK_DEBUG, meshlink_callback_logger);
107 meshlink_set_channel_accept_cb(mesh, channel_accept);
109 if(argv[CMD_LINE_ARG_INVITEURL]) {
110 assert(meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]));
113 assert(meshlink_start(mesh));
115 assert(wait_sync_flag(&sigusr, 140));
116 meshlink_channel_t *channel = mesh->priv;
117 assert(meshlink_channel_send(mesh, channel, "failure", 7));
119 // All test steps executed - wait for signals to stop/start or close the mesh
121 while(test_running) {
122 select(1, NULL, NULL, NULL, &main_loop_wait);
125 meshlink_close(mesh);