1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/* We simply call the root header file "App.h", giving you uWS::App and uWS::SSLApp */
#include "App.h"
#include <time.h>
#include <iostream>
/* This is a simple WebSocket echo server example.
* You may compile it with "WITH_OPENSSL=1 make" or with "make" */
uWS::SSLApp *globalApp;
int main() {
/* ws->getUserData returns one of these */
struct PerSocketData {
/* Fill with user data */
};
/* Keep in mind that uWS::SSLApp({options}) is the same as uWS::App() when compiled without SSL support.
* You may swap to using uWS:App() if you don't need SSL */
uWS::SSLApp app = uWS::SSLApp({
/* There are example certificates in uWebSockets.js repo */
.key_file_name = "misc/key.pem",
.cert_file_name = "misc/cert.pem",
.passphrase = "1234"
}).ws<PerSocketData>("/*", {
/* Settings */
.compression = uWS::SHARED_COMPRESSOR,
.maxPayloadLength = 16 * 1024 * 1024,
.idleTimeout = 16,
.maxBackpressure = 1 * 1024 * 1024,
.closeOnBackpressureLimit = false,
.resetIdleTimeoutOnSend = false,
.sendPingsAutomatically = true,
/* Handlers */
.upgrade = nullptr,
.open = [](auto *ws) {
/* Open event here, you may access ws->getUserData() which points to a PerSocketData struct */
ws->subscribe("broadcast");
},
.message = [](auto */*ws*/, std::string_view /*message*/, uWS::OpCode /*opCode*/) {
},
.drain = [](auto */*ws*/) {
/* Check ws->getBufferedAmount() here */
},
.ping = [](auto */*ws*/, std::string_view) {
/* Not implemented yet */
},
.pong = [](auto */*ws*/, std::string_view) {
/* Not implemented yet */
},
.close = [](auto */*ws*/, int /*code*/, std::string_view /*message*/) {
/* You may access ws->getUserData() here */
}
}).listen(9001, [](auto *listen_socket) {
if (listen_socket) {
std::cout << "Listening on port " << 9001 << std::endl;
}
});
struct us_loop_t *loop = (struct us_loop_t *) uWS::Loop::get();
struct us_timer_t *delayTimer = us_create_timer(loop, 0, 0);
// broadcast the unix time as millis every 8 millis
us_timer_set(delayTimer, [](struct us_timer_t */*t*/) {
struct timespec ts;
timespec_get(&ts, TIME_UTC);
int64_t millis = ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
//std::cout << "Broadcasting timestamp: " << millis << std::endl;
globalApp->publish("broadcast", std::string_view((char *) &millis, sizeof(millis)), uWS::OpCode::BINARY, false);
}, 8, 8);
globalApp = &app;
app.run();
}
|