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
|
#include "App.h"
#include <thread>
#include <algorithm>
int main() {
/* ws->getUserData returns one of these */
struct PerSocketData {
};
/* Simple echo websocket server, using multiple threads */
std::vector<std::thread *> threads(std::thread::hardware_concurrency());
std::transform(threads.begin(), threads.end(), threads.begin(), [](std::thread */*t*/) {
return new std::thread([]() {
/* Very simple WebSocket echo server */
uWS::App().ws<PerSocketData>("/*", {
/* Settings */
.compression = uWS::SHARED_COMPRESSOR,
.maxPayloadLength = 16 * 1024,
.idleTimeout = 10,
.maxBackpressure = 1 * 1024 * 1024,
/* Handlers */
.upgrade = nullptr,
.open = [](auto */*ws*/) {
},
.message = [](auto *ws, std::string_view message, uWS::OpCode opCode) {
ws->send(message, opCode);
},
.drain = [](auto */*ws*/) {
/* Check getBufferedAmount here */
},
.ping = [](auto */*ws*/, std::string_view) {
},
.pong = [](auto */*ws*/, std::string_view) {
},
.close = [](auto */*ws*/, int /*code*/, std::string_view /*message*/) {
}
}).listen(9001, [](auto *listen_socket) {
if (listen_socket) {
std::cout << "Thread " << std::this_thread::get_id() << " listening on port " << 9001 << std::endl;
} else {
std::cout << "Thread " << std::this_thread::get_id() << " failed to listen on port 9001" << std::endl;
}
}).run();
});
});
std::for_each(threads.begin(), threads.end(), [](std::thread *t) {
t->join();
});
}
|