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/network_namespace_framework.h"
31 #include "../../utils.h"
32 #include "../run_blackbox_tests/test_optimal_pmtu.h"
34 extern bool test_pmtu_peer_running;
36 static struct sync_flag nut_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
37 static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
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 bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len) {
46 assert(port == CHANNEL_PORT);
48 if(!strcmp(channel->node->name, "nut")) {
49 meshlink_set_channel_receive_cb(mesh, channel, channel_receive_cb);
50 //channel->node->priv = channel;
58 static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
60 meshlink_set_channel_poll_cb(mesh, channel, NULL);
61 assert(meshlink_channel_send(mesh, channel, "test", 5) >= 0);
65 /* channel receive callback */
66 static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
73 if(!strcmp(channel->node->name, "nut")) {
74 if(!memcmp(dat, "reply", 5)) {
75 set_sync_flag(&channel_opened, true);
76 } else if(!memcmp(dat, "test", 5)) {
77 assert(meshlink_channel_send(mesh, channel, "reply", 5) >= 0);
84 static void log_message(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
87 if(level == MESHLINK_INFO) {
88 fprintf(stderr, "\x1b[34m peer:\x1b[0m %s\n", text);
92 void *node_sim_pmtu_peer_01(void *arg) {
93 mesh_arg_t *mesh_arg = (mesh_arg_t *)arg;
94 struct timeval main_loop_wait = { 5, 0 };
96 // Run relay node instance
99 meshlink_handle_t *mesh;
100 mesh = meshlink_open(mesh_arg->node_name, mesh_arg->confbase, mesh_arg->app_name, mesh_arg->dev_class);
103 meshlink_set_log_cb(mesh, MESHLINK_DEBUG, log_message);
104 meshlink_set_channel_accept_cb(mesh, channel_accept);
106 if(mesh_arg->join_invitation) {
110 for(attempts = 0; attempts < 10; attempts++) {
111 join_ret = meshlink_join(mesh, mesh_arg->join_invitation);
125 assert(meshlink_start(mesh));
127 // All test steps executed - wait for signals to stop/start or close the mesh
129 while(test_pmtu_peer_running) {
130 select(1, NULL, NULL, NULL, &main_loop_wait);
133 meshlink_close(mesh);