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);
17 fprintf(stderr, "[%d] %s\n", level, text);
20 void status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
23 if(!strcmp(node->name, "bar")) {
24 bar_reachable = reachable;
28 void foo_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
33 if(len == 5 && !memcmp(data, "Hello", 5)) {
38 void bar_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
39 // Echo the data back.
40 meshlink_channel_send(mesh, channel, data, len);
43 bool reject_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
53 bool accept_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, uint16_t port, const void *data, size_t len) {
58 meshlink_set_channel_receive_cb(mesh, channel, bar_receive_cb);
61 bar_receive_cb(mesh, channel, data, len);
67 void poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t len) {
70 meshlink_set_channel_poll_cb(mesh, channel, NULL);
72 if(meshlink_channel_send(mesh, channel, "Hello", 5) != 5) {
73 fprintf(stderr, "Could not send whole message\n");
77 int main1(int rfd, int wfd) {
80 meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
82 meshlink_handle_t *mesh1 = meshlink_open("channels_fork_conf.1", "foo", "channels", DEV_CLASS_BACKBONE);
85 fprintf(stderr, "Could not initialize configuration for foo\n");
89 meshlink_enable_discovery(mesh1, false);
91 meshlink_add_address(mesh1, "localhost");
93 char *data = meshlink_export(mesh1);
96 fprintf(stderr, "Foo could not export its configuration\n");
100 size_t len = strlen(data);
101 ret_val = write(wfd, &len, sizeof(len));
102 ret_val = write(wfd, data, len);
105 ret_val = read(rfd, &len, sizeof(len));
106 char indata[len + 1];
107 ret_val = read(rfd, indata, len);
110 fprintf(stderr, "Foo exchanged data\n");
112 meshlink_import(mesh1, indata);
114 meshlink_set_channel_accept_cb(mesh1, reject_cb);
115 meshlink_set_node_status_cb(mesh1, status_cb);
117 if(!meshlink_start(mesh1)) {
118 fprintf(stderr, "Foo could not start\n");
122 for(int i = 0; i < 20; i++) {
131 fprintf(stderr, "Bar not reachable for foo after 20 seconds\n");
135 // Open a channel from foo to bar.
137 meshlink_node_t *bar = meshlink_get_node(mesh1, "bar");
140 fprintf(stderr, "Foo could not find bar\n");
144 meshlink_channel_t *channel = meshlink_channel_open(mesh1, bar, 7, foo_receive_cb, NULL, 0);
145 meshlink_set_channel_poll_cb(mesh1, channel, poll_cb);
147 for(int i = 0; i < 5; i++) {
156 fprintf(stderr, "Bar did not respond to foo's channel message\n");
160 meshlink_channel_close(mesh1, channel);
164 meshlink_close(mesh1);
170 int main2(int rfd, int wfd) {
175 meshlink_set_log_cb(NULL, MESHLINK_DEBUG, log_cb);
177 meshlink_handle_t *mesh2 = meshlink_open("channels_fork_conf.2", "bar", "channels", DEV_CLASS_BACKBONE);
180 fprintf(stderr, "Could not initialize configuration for bar\n");
184 meshlink_enable_discovery(mesh2, false);
186 char *data = meshlink_export(mesh2);
189 fprintf(stderr, "Bar could not export its configuration\n");
193 size_t len = strlen(data);
195 if(write(wfd, &len, sizeof(len)) <= 0) {
199 if(write(wfd, data, len) <= 0) {
205 ret_val = read(rfd, &len, sizeof(len));
206 char indata[len + 1];
207 ret_val = read(rfd, indata, len);
210 fprintf(stderr, "Bar exchanged data\n");
212 meshlink_import(mesh2, indata);
214 meshlink_set_channel_accept_cb(mesh2, accept_cb);
216 if(!meshlink_start(mesh2)) {
217 fprintf(stderr, "Bar could not start\n");
225 meshlink_close(mesh2);
236 ret_val = pipe2(fda, 0);
237 ret_val = pipe2(fdb, 0);
240 return main1(fda[0], fdb[1]);
242 return main2(fdb[0], fda[1]);