+++ /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.
-*/
-
-#ifdef NDEBUG
-#undef NDEBUG
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <assert.h>
-#include <signal.h>
-#include <time.h>
-#include "../common/common_handlers.h"
-#include "../common/test_step.h"
-#include "../common/mesh_event_handler.h"
-#include "../../utils.h"
-#include "../run_blackbox_tests/test_optimal_pmtu.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
-
-#pragma pack(1)
-
-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 void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
- bool reachable);
-static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len);
-static bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len);
-
-static pmtu_attr_t node_pmtu[2];
-
-static void print_mtu_calc(pmtu_attr_t node_pmtu) {
- fprintf(stderr, "MTU size : %d\n", node_pmtu.mtu_size);
- fprintf(stderr, "Probes took for calculating PMTU discovery : %d\n", node_pmtu.mtu_discovery.probes);
- fprintf(stderr, "Probes total length took for calculating PMTU discovery : %d\n", node_pmtu.mtu_discovery.probes_total_len);
- fprintf(stderr, "Time took for calculating PMTU discovery : %lu\n", node_pmtu.mtu_discovery.time);
- fprintf(stderr, "Total MTU ping probes : %d\n", node_pmtu.mtu_ping.probes);
- fprintf(stderr, "Total MTU ping probes length : %d\n", node_pmtu.mtu_ping.probes_total_len);
- float avg = 0;
-
- if(node_pmtu.mtu_ping.probes) {
- avg = (float)node_pmtu.mtu_ping.time / (float)node_pmtu.mtu_ping.probes;
- }
-
- fprintf(stderr, "Average MTU ping probes ping time : %f\n", avg);
- fprintf(stderr, "Total probes received %d\n", node_pmtu.mtu_recv_probes.probes);
- fprintf(stderr, "Total probes sent %d\n", node_pmtu.mtu_sent_probes.probes);
-}
-
-static void node_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node,
- bool reachable) {
- if(!strcasecmp(node->name, "peer") && reachable) {
- set_sync_flag(&peer_reachable, true);
- }
-
- mesh_event_sock_send(client_id, reachable ? NODE_JOINED : NODE_LEFT, node->name, 100);
- 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 bool channel_accept(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *dat, size_t len) {
- (void)dat;
- (void)len;
-
- assert(port == CHANNEL_PORT);
-
- if(!strcmp(channel->node->name, "peer")) {
- meshlink_set_channel_receive_cb(mesh, channel, channel_receive_cb);
- mesh->priv = channel;
-
- return true;
- }
-
- return false;
-}
-
-/* channel receive callback */
-static void channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *dat, size_t len) {
- if(len == 0) {
- mesh_event_sock_send(client_id, ERR_NETWORK, channel->node->name, 100);
- return;
- }
-
- if(!strcmp(channel->node->name, "peer")) {
- if(!memcmp(dat, "reply", 5)) {
- set_sync_flag(&channel_opened, true);
- fprintf(stderr, "GOT REPLY FROM PEER\n");
- } else if(!memcmp(dat, "test", 5)) {
- assert(meshlink_channel_send(mesh, channel, "reply", 5) >= 0);
- }
- }
-
- return;
-}
-
-void meshlink_logger(meshlink_handle_t *mesh, meshlink_log_level_t level,
- const char *text) {
- (void)mesh;
- (void)level;
- int probe_len;
- int mtu_len;
- int probes;
- char node_name[100];
- int i = -1;
-
- time_t cur_time;
- time_t probe_interval;
-
- cur_time = time(NULL);
- assert(cur_time != -1);
-
- static time_t node_shutdown_time = 0;
- bool mtu_probe = false;
-
- if(node_shutdown_time && cur_time >= node_shutdown_time) {
- test_running = false;
- }
-
- static const char *levelstr[] = {
- [MESHLINK_DEBUG] = "\x1b[34mDEBUG",
- [MESHLINK_INFO] = "\x1b[32mINFO",
- [MESHLINK_WARNING] = "\x1b[33mWARNING",
- [MESHLINK_ERROR] = "\x1b[31mERROR",
- [MESHLINK_CRITICAL] = "\x1b[31mCRITICAL",
- };
-
- fprintf(stderr, "%s:\x1b[0m %s\n", levelstr[level], text);
-
- if(sscanf(text, "Sending MTU probe length %d to %s", &probe_len, node_name) == 2) {
- find_node_index(i, node_name);
- node_pmtu[i].mtu_sent_probes.probes += 1;
- node_pmtu[i].mtu_sent_probes.probes_total_len += probe_len;
-
- if(node_pmtu[i].mtu_size) {
- if(node_pmtu[i].mtu_sent_probes.time > node_pmtu[i].mtu_recv_probes.time) {
- probe_interval = cur_time - node_pmtu[i].mtu_sent_probes.time;
- } else {
- probe_interval = cur_time - node_pmtu[i].mtu_recv_probes.time;
- }
-
- node_pmtu[i].mtu_ping.probes += 1;
- node_pmtu[i].mtu_ping.time += probe_interval;
- node_pmtu[i].mtu_ping.probes_total_len += probe_len;
- }
-
- node_pmtu[i].mtu_sent_probes.time = cur_time;
-
- } else if(sscanf(text, "Got MTU probe length %d from %s", &probe_len, node_name) == 2) {
- find_node_index(i, node_name);
- node_pmtu[i].mtu_recv_probes.probes += 1;
- node_pmtu[i].mtu_recv_probes.probes_total_len += probe_len;
-
- if(node_pmtu[i].mtu_size) {
- if(node_pmtu[i].mtu_sent_probes.time > node_pmtu[i].mtu_recv_probes.time) {
- probe_interval = cur_time - node_pmtu[i].mtu_sent_probes.time;
- } else {
- probe_interval = cur_time - node_pmtu[i].mtu_recv_probes.time;
- }
-
- node_pmtu[i].mtu_ping.probes += 1;
- node_pmtu[i].mtu_ping.time += probe_interval;
- node_pmtu[i].mtu_ping.probes_total_len += probe_len;
- }
-
- node_pmtu[i].mtu_recv_probes.time = cur_time;
-
- } else if(sscanf(text, "Fixing MTU of %s to %d after %d probes", node_name, &mtu_len, &probes) == 3) {
- static bool mtu_set = true;
-
- if(!node_shutdown_time && !strcasecmp("relay", node_name) && mtu_set) {
- node_shutdown_time = cur_time + PING_TRACK_TIMEOUT;
- mtu_set = false;
- }
-
- find_node_index(i, node_name);
- node_pmtu[i].mtu_discovery.probes = node_pmtu[i].mtu_recv_probes.probes + node_pmtu[i].mtu_sent_probes.probes;
- node_pmtu[i].mtu_discovery.probes_total_len = node_pmtu[i].mtu_sent_probes.probes_total_len + node_pmtu[i].mtu_recv_probes.probes_total_len;
- node_pmtu[i].mtu_discovery.time = cur_time - node_pmtu[i].mtu_start.time;
- node_pmtu[i].mtu_discovery.count += 1;
- node_pmtu[i].mtu_size = mtu_len;
-
- } else if(sscanf(text, "SPTPS key exchange with %s successful", node_name) == 1) {
- find_node_index(i, node_name);
- node_pmtu[i].mtu_start.time = cur_time;
- node_pmtu[i].mtu_start.count += 1;
- memset(&node_pmtu[i].mtu_discovery, 0, sizeof(struct pmtu_attr_para));
- memset(&node_pmtu[i].mtu_ping, 0, sizeof(struct pmtu_attr_para));
- memset(&node_pmtu[i].mtu_increase, 0, sizeof(struct pmtu_attr_para));
-
- } else if(sscanf(text, "Increase in PMTU to %s detected, restarting PMTU discovery", node_name) == 1) {
- find_node_index(i, node_name);
- node_pmtu[i].mtu_increase.time = cur_time - node_pmtu[i].mtu_start.time;
- node_pmtu[i].mtu_increase.count += 1;
-
- } else if(sscanf(text, "Trying to send MTU probe to unreachable or rekeying node %s", node_name) == 1) {
-
- } else if(sscanf(text, "%s did not respond to UDP ping, restarting PMTU discovery", node_name) == 1) {
-
- } else if(sscanf(text, "No response to MTU probes from %s", node_name) == 1) {
-
- } else if((sscanf(text, "Connection with %s activated", node_name) == 1) || (sscanf(text, "Already connected to %s", node_name) == 1)) {
- mesh_event_sock_send(client_id, META_CONN_SUCCESSFUL, node_name, sizeof(node_name));
-
- } else if((sscanf(text, "Connection closed by %s", node_name) == 1) || (sscanf(text, "Closing connection with %s", node_name) == 1)) {
- mesh_event_sock_send(client_id, META_CONN_CLOSED, node_name, sizeof(node_name));
-
- }
-}
-
-int main(int argc, char *argv[]) {
- struct timeval main_loop_wait = { 5, 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_signals();
-
- // 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_logger);
- meshlink_set_node_status_cb(mesh, node_status_cb);
- meshlink_enable_discovery(mesh, false);
- sleep(1);
-
- if(argv[CMD_LINE_ARG_INVITEURL]) {
- int attempts;
- bool join_ret;
-
- for(attempts = 0; attempts < 10; attempts++) {
- join_ret = meshlink_join(mesh, argv[CMD_LINE_ARG_INVITEURL]);
-
- if(join_ret) {
- break;
- }
-
- sleep(1);
- }
-
- if(attempts == 10) {
- abort();
- }
- }
-
- assert(meshlink_start(mesh));
-
- // Wait for peer node to join
-
- assert(wait_sync_flag(&peer_reachable, 10));
-
- // 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, 30));
- assert(mesh_event_sock_send(client_id, CHANNEL_OPENED, NULL, 0));
-
- // All test steps executed - wait for signals to stop/start or close the mesh
-
- time_t time_stamp, send_time;
-
- time_stamp = time(NULL);
- send_time = time_stamp + 10;
-
- while(test_running) {
- select(1, NULL, NULL, NULL, &main_loop_wait);
-
- time_stamp = time(NULL);
-
- if(time_stamp >= send_time) {
- send_time = time_stamp + 10;
- meshlink_channel_send(mesh, channel, "ping", 5);
- }
- }
-
- pmtu_attr_t send_mtu_data;
- send_mtu_data = node_pmtu[NODE_PMTU_PEER];
- print_mtu_calc(send_mtu_data);
- assert(mesh_event_sock_send(client_id, OPTIMAL_PMTU_PEER, &send_mtu_data, sizeof(send_mtu_data)));
- send_mtu_data = node_pmtu[NODE_PMTU_RELAY];
- print_mtu_calc(send_mtu_data);
- assert(mesh_event_sock_send(client_id, OPTIMAL_PMTU_RELAY, &send_mtu_data, sizeof(send_mtu_data)));
-
- meshlink_close(mesh);
-}
projects / meshlink-tiny / blobdiff