--- /dev/null
+/*
+ node_sim_nut.c -- Implementation of Node Simulation for Meshlink Testing
+ for meta connection test case 01 - re-connection of
+ two nodes when relay node goes down
+ Copyright (C) 2018 Guus Sliepen <guus@meshlink.io>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <assert.h>
+#include <signal.h>
+#include "../common/common_handlers.h"
+#include "../common/test_step.h"
+#include "../common/mesh_event_handler.h"
+#include "../../utils.h"
+
+#define CMD_LINE_ARG_NODENAME 1
+#define CMD_LINE_ARG_DEVCLASS 2
+#define CMD_LINE_ARG_CLIENTID 3
+#define CMD_LINE_ARG_IMPORTSTR 4
+#define CMD_LINE_ARG_INVITEURL 5
+#define CHANNEL_PORT 1234
+
+static int client_id = -1;
+
+static struct sync_flag peer_reachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
+static struct sync_flag channel_opened = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
+static struct sync_flag peer_unreachable = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
+static struct sync_flag sigusr_received = {.mutex = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
+
+static void send_event(mesh_event_t event);
+static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
+ bool reachable);
+static void mesh_siguser1_signal_handler(int sig_num);
+
+static void mesh_siguser1_signal_handler(int sig_num) {
+ set_sync_flag(&sigusr_received, true);
+ return;
+}
+
+static void send_event(mesh_event_t event) {
+ bool send_ret = false;
+ int attempts;
+
+ for(attempts = 0; attempts < 5; attempts += 1) {
+ if(mesh_event_sock_send(client_id, event, NULL, 0)) {
+ break;
+ }
+ }
+
+ assert(attempts < 5);
+
+ return;
+}
+
+static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
+ bool reachable) {
+
+ if(!strcasecmp(node->name, "peer")) {
+ if(reachable) {
+ set_sync_flag(&peer_reachable, true);
+ } else {
+ set_sync_flag(&peer_unreachable, true);
+ }
+ }
+
+ return;
+}
+
+static void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
+ (void)len;
+ meshlink_set_channel_poll_cb(mesh, channel, NULL);
+ assert(meshlink_channel_send(mesh, channel, "test", 5) >= 0);
+ return;
+}
+
+static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
+ if(len == 0) {
+ send_event(ERR_NETWORK);
+ return;
+ }
+
+ if(!strcmp(channel->node->name, "peer")) {
+ if(len == 5 && !memcmp(dat, "reply", 5)) {
+ set_sync_flag(&channel_opened, true);
+ }
+ }
+
+ return;
+}
+
+int main(int argc, char *argv[]) {
+ struct timeval main_loop_wait = { 2, 0 };
+ struct timespec timeout = {0};
+ int i;
+
+ // Import mesh event handler
+
+ if((argv[CMD_LINE_ARG_CLIENTID]) && (argv[CMD_LINE_ARG_IMPORTSTR])) {
+ client_id = atoi(argv[CMD_LINE_ARG_CLIENTID]);
+ mesh_event_sock_connect(argv[CMD_LINE_ARG_IMPORTSTR]);
+ }
+
+ // Setup required signals
+
+ setup_signals();
+ signal(SIGUSR1, mesh_siguser1_signal_handler);
+
+ // Execute test steps
+
+ meshlink_handle_t *mesh = meshlink_open("testconf", argv[CMD_LINE_ARG_NODENAME],
+ "test_channel_conn", atoi(argv[CMD_LINE_ARG_DEVCLASS]));
+ assert(mesh);
+ meshlink_set_log_cb(mesh, MESHLINK_DEBUG, meshlink_callback_logger);
+ meshlink_set_node_status_cb(mesh, node_status_cb);
+
+ if(argv[CMD_LINE_ARG_INVITEURL]) {
+ assert(meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]));
+ }
+
+ assert(meshlink_start(mesh));
+
+ // Wait for peer node to join
+ assert(wait_sync_flag(&peer_reachable, 30));
+ send_event(NODE_JOINED);
+
+ // Open a channel to peer node
+
+ meshlink_node_t *peer_node = meshlink_get_node(mesh, "peer");
+ assert(peer_node);
+ meshlink_channel_t *channel = meshlink_channel_open(mesh, peer_node, CHANNEL_PORT,
+ channel_receive_cb, NULL, 0);
+ meshlink_set_channel_poll_cb(mesh, channel, poll_cb);
+
+ assert(wait_sync_flag(&channel_opened, 10));
+ send_event(CHANNEL_OPENED);
+
+ peer_unreachable.flag = false;
+ peer_reachable.flag = false;
+ assert(wait_sync_flag(&sigusr_received, 10));
+
+ assert(wait_sync_flag(&peer_unreachable, 100));
+ send_event(NODE_UNREACHABLE);
+
+ assert(wait_sync_flag(&peer_reachable, 100));
+ send_event(NODE_REACHABLE);
+
+ assert(meshlink_channel_send(mesh, channel, "after", 6) >= 0);
+
+ // All test steps executed - wait for signals to stop/start or close the mesh
+
+ while(test_running) {
+ select(1, NULL, NULL, NULL, &main_loop_wait);
+ }
+
+ meshlink_close(mesh);
+}
projects / meshlink / blobdiff