+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include "../src/meshlink.h"
#include "utils.h"
-static struct sync_flag accept_flag;
-static struct sync_flag close_flag;
struct client {
meshlink_handle_t *mesh;
- meshlink_channel_t *channel;
size_t received;
+ bool got_large_packet;
+ struct sync_flag accept_flag;
+ struct sync_flag close_flag;
};
-static void log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
- static struct timeval tv0;
- struct timeval tv;
-
- if(tv0.tv_sec == 0) {
- gettimeofday(&tv0, NULL);
- }
-
- gettimeofday(&tv, NULL);
- fprintf(stderr, "%u.%.03u ", (unsigned int)(tv.tv_sec - tv0.tv_sec), (unsigned int)tv.tv_usec / 1000);
-
- if(mesh) {
- fprintf(stderr, "(%s) ", mesh->name);
- }
-
- fprintf(stderr, "[%d] %s\n", level, text);
-}
-
-static void server_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
- (void)data;
-
- // We expect no data from clients, apart from disconnections.
- assert(len == 0);
-
- meshlink_channel_t **c = mesh->priv;
- int count = 0;
-
- for(int i = 0; i < 3; i++) {
- if(c[i] == channel) {
- c[i] = NULL;
- fprintf(stderr, "server received channel %d closure from %s\n", i, channel->node->name);
-
- meshlink_channel_close(mesh, channel);
- }
-
- if(c[i]) {
- count++;
- }
- }
-
- if(!count) {
- set_sync_flag(&close_flag, true);
- }
-}
-
-static void client_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
+static void receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
(void)channel;
(void)data;
// We expect always the same amount of data from the server.
- assert(len == 1000);
assert(mesh->priv);
struct client *client = mesh->priv;
- client->received += len;
-}
-static void status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
- assert(mesh->priv);
- struct client *client = mesh->priv;
+ if(!data && len == 0) {
+ set_sync_flag(&client->close_flag, true);
+ meshlink_channel_close(mesh, channel);
+ return;
+ }
- assert(reachable);
+ assert(len == 512 || len == 65535);
+ client->received += len;
- if(!strcmp(node->name, "server")) {
- assert(!client->channel);
- client->channel = meshlink_channel_open_ex(mesh, node, 1, client_receive_cb, NULL, 0, MESHLINK_CHANNEL_UDP);
- assert(client->channel);
+ if(len == 65535) {
+ client->got_large_packet = true;
}
}
static bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
- (void)data;
- (void)len;
-
assert(port == 1);
+ assert(!data);
+ assert(!len);
assert(meshlink_channel_get_flags(mesh, channel) == MESHLINK_CHANNEL_UDP);
- meshlink_set_channel_receive_cb(mesh, channel, server_receive_cb);
assert(mesh->priv);
- meshlink_channel_t **c = mesh->priv;
-
- for(int i = 0; i < 3; i++) {
- if(c[i] == NULL) {
- fprintf(stderr, "server accepted channel %d from %s\n", i, channel->node->name);
- c[i] = channel;
-
- if(i == 2) {
- set_sync_flag(&accept_flag, true);
- }
+ struct client *client = mesh->priv;
- return true;
- }
- }
+ meshlink_set_channel_receive_cb(mesh, channel, receive_cb);
+ set_sync_flag(&client->accept_flag, true);
- return false;
+ return true;
}
-int main() {
- //meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
+int main(void) {
+ meshlink_set_log_cb(NULL, MESHLINK_WARNING, log_cb);
- // Open two new meshlink instance.
+ // Open four new meshlink instance, the server and three peers.
const char *names[3] = {"foo", "bar", "baz"};
struct client clients[3];
meshlink_channel_t *channels[3] = {NULL, NULL, NULL};
memset(clients, 0, sizeof(clients));
+ assert(meshlink_destroy("channels_udp_conf.0"));
meshlink_handle_t *server = meshlink_open("channels_udp_conf.0", "server", "channels-udp", DEV_CLASS_BACKBONE);
assert(server);
meshlink_enable_discovery(server, false);
server->priv = channels;
- meshlink_set_channel_accept_cb(server, accept_cb);
assert(meshlink_start(server));
for(int i = 0; i < 3; i++) {
char dir[100];
snprintf(dir, sizeof(dir), "channels_udp_conf.%d", i + 1);
+ assert(meshlink_destroy(dir));
clients[i].mesh = meshlink_open(dir, names[i], "channels-udp", DEV_CLASS_STATIONARY);
assert(clients[i].mesh);
clients[i].mesh->priv = &clients[i];
meshlink_enable_discovery(clients[i].mesh, false);
+ meshlink_set_channel_accept_cb(clients[i].mesh, accept_cb);
link_meshlink_pair(server, clients[i].mesh);
- meshlink_set_node_status_cb(clients[i].mesh, status_cb);
assert(meshlink_start(clients[i].mesh));
}
+ // Open channels
+
+ for(int i = 0; i < 3; i++) {
+ meshlink_node_t *peer = meshlink_get_node(server, names[i]);
+ assert(peer);
+ channels[i] = meshlink_channel_open_ex(server, peer, 1, NULL, NULL, 0, MESHLINK_CHANNEL_UDP);
+ assert(channels[i]);
+ }
+
// Wait for all three channels to connect
- assert(wait_sync_flag(&accept_flag, 10));
+ for(int i = 0; i < 3; i++) {
+ assert(wait_sync_flag(&clients[i].accept_flag, 10));
+ }
+
+ // Check that we can send up to 65535 bytes without errors
+
+ char large_data[65535] = "";
for(int i = 0; i < 3; i++) {
- assert(channels[i]);
- assert(clients[i].channel);
+ assert(meshlink_channel_send(server, channels[i], large_data, sizeof(large_data)) == sizeof(large_data));
+ }
+
+ // Check that we can send zero bytes without errors
+
+ for(int i = 0; i < 3; i++) {
+ assert(meshlink_channel_send(server, channels[i], large_data, 0) == 0);
}
+ // Assert that any larger packets are not allowed
+
+ assert(meshlink_channel_send(server, channels[0], large_data, 65536) == -1);
+
// Stream packets from server to clients for 5 seconds at 40 Mbps (1 kB * 500 Hz)
- char data[1000];
+ char data[512];
memset(data, 'U', sizeof(data));
for(int j = 0; j < 2500; j++) {
for(int i = 0; i < 3; i++) {
- assert(meshlink_channel_send(server, channels[i], data, sizeof(data)) == sizeof(data));
+ size_t result = meshlink_channel_send(server, channels[i], data, sizeof(data));
+ assert(result == sizeof(data));
}
const struct timespec req = {0, 2000000};
clock_nanosleep(CLOCK_MONOTONIC, 0, &req, NULL);
}
- // Let the clients close the channels
+ // Close the channels
for(int i = 0; i < 3; i++) {
- meshlink_channel_close(clients[i].mesh, clients[i].channel);
- meshlink_set_node_status_cb(clients[i].mesh, NULL);
+ meshlink_channel_close(server, channels[i]);
}
- assert(wait_sync_flag(&close_flag, 10));
+ for(int i = 0; i < 3; i++) {
+ assert(wait_sync_flag(&clients[i].close_flag, 10));
+ }
// Check that the clients have received (most of) the data
fprintf(stderr, "%s received %zu\n", clients[i].mesh->name, clients[i].received);
}
+ bool got_large_packet = false;
+
for(int i = 0; i < 3; i++) {
- assert(clients[i].received >= 2400000);
- assert(clients[i].received <= 2500000);
+ assert(clients[i].received >= 1000000);
+ assert(clients[i].received <= 1345536);
+ got_large_packet |= clients[i].got_large_packet;
}
+ assert(got_large_packet);
+
// Clean up.
for(int i = 0; i < 3; i++) {
projects / meshlink / blobdiff