7 #include "../src/meshlink.h"
9 volatile bool bar_reachable = false;
10 volatile bool bar_responded = false;
12 void log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
14 fprintf(stderr, "(%s) ", mesh->name);
15 fprintf(stderr, "[%d] %s\n", level, text);
18 void status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
19 if(!strcmp(node->name, "bar"))
20 bar_reachable = reachable;
23 void foo_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
24 if(len == 5 && !memcmp(data, "Hello", 5))
28 void bar_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
29 // Echo the data back.
30 meshlink_channel_send(mesh, channel, data, len);
33 bool reject_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
37 bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
40 meshlink_set_channel_receive_cb(mesh, channel, bar_receive_cb);
42 bar_receive_cb(mesh, channel, data, len);
46 void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
47 meshlink_set_channel_poll_cb(mesh, channel, NULL);
48 if(meshlink_channel_send(mesh, channel, "Hello", 5) != 5)
49 fprintf(stderr, "Could not send whole message\n");
52 int main1(int rfd, int wfd) {
53 meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
55 meshlink_handle_t *mesh1 = meshlink_open("channels_conf.1", "foo", "channels", DEV_CLASS_BACKBONE);
57 fprintf(stderr, "Could not initialize configuration for foo\n");
61 meshlink_enable_discovery(mesh1, false);
63 meshlink_add_address(mesh1, "localhost");
65 char *data = meshlink_export(mesh1);
67 fprintf(stderr, "Foo could not export its configuration\n");
71 size_t len = strlen(data);
72 write(wfd, &len, sizeof(len));
73 write(wfd, data, len);
76 read(rfd, &len, sizeof(len));
78 read(rfd, indata, len);
81 fprintf(stderr, "Foo exchanged data\n");
83 meshlink_import(mesh1, indata);
85 meshlink_set_channel_accept_cb(mesh1, reject_cb);
86 meshlink_set_node_status_cb(mesh1, status_cb);
88 if(!meshlink_start(mesh1)) {
89 fprintf(stderr, "Foo could not start\n");
93 for(int i = 0; i < 20; i++) {
100 fprintf(stderr, "Bar not reachable for foo after 20 seconds\n");
104 // Open a channel from foo to bar.
106 meshlink_node_t *bar = meshlink_get_node(mesh1, "bar");
108 fprintf(stderr, "Foo could not find bar\n");
112 meshlink_channel_t *channel = meshlink_channel_open(mesh1, bar, 7, foo_receive_cb, NULL, 0);
113 meshlink_set_channel_poll_cb(mesh1, channel, poll_cb);
115 for(int i = 0; i < 5; i++) {
122 fprintf(stderr, "Bar did not respond to foo's channel message\n");
126 meshlink_channel_close(mesh1, channel);
130 meshlink_close(mesh1);
136 int main2(int rfd, int wfd) {
139 meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
141 meshlink_handle_t *mesh2 = meshlink_open("channels_conf.2", "bar", "channels", DEV_CLASS_BACKBONE);
143 fprintf(stderr, "Could not initialize configuration for bar\n");
147 meshlink_enable_discovery(mesh2, false);
149 char *data = meshlink_export(mesh2);
151 fprintf(stderr, "Bar could not export its configuration\n");
155 size_t len = strlen(data);
156 if(write(wfd, &len, sizeof(len)) <= 0) abort();
157 if(write(wfd, data, len) <= 0) abort();
160 read(rfd, &len, sizeof(len));
161 char indata[len + 1];
162 read(rfd, indata, len);
165 fprintf(stderr, "Bar exchanged data\n");
167 meshlink_import(mesh2, indata);
169 meshlink_set_channel_accept_cb(mesh2, accept_cb);
171 if(!meshlink_start(mesh2)) {
172 fprintf(stderr, "Bar could not start\n");
180 meshlink_close(mesh2);
186 int main(int argc, char *argv[]) {
187 int fda[2], fdb[2], result;
193 return main1(fda[0], fdb[1]);
195 return main2(fdb[0], fda[1]);