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multithreaded_echo.cpp
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multithreaded_echo.cpp
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/* this example shows how you can scale vertically over all CPU cores */
/* threading is up to the user, so you could listen to one port or a range */
/* depending on what you want, I don't care what you chose to do */
#include <iostream>
#include <string>
#include <thread>
using namespace std;
#include <uWS.h>
using namespace uWS;
#define THREADS 4
Server *threadedServer[THREADS];
int main()
{
try {
// you need at least one server listening to a port
EventSystem es(MASTER);
Server server(es, 3000);
server.onUpgrade([](uv_os_fd_t fd, const char *secKey, void *ssl, const char *extensions, size_t extensionsLength) {
// we transfer the connection to one of the other servers
threadedServer[rand() % THREADS]->upgrade(fd, secKey, ssl, extensions, extensionsLength);
});
// launch the threads with their servers
for (int i = 0; i < THREADS; i++) {
new thread([i]{
EventSystem tes(WORKER);
threadedServer[i] = new Server(tes, 0);
// register our events
threadedServer[i]->onConnection([i](WebSocket socket) {
cout << "Connection on thread " << i << endl;
});
threadedServer[i]->onDisconnection([i](WebSocket socket, int code, char *message, size_t length) {
cout << "Disconnection on thread " << i << endl;
});
threadedServer[i]->onMessage([i](WebSocket socket, char *message, size_t length, OpCode opCode) {
cout << "Message on thread " << i << ": " << string(message, length) << endl;
socket.send(message, length, opCode);
});
tes.run();
});
}
// run listener
es.run();
} catch (...) {
cout << "ERR_LISTEN" << endl;
}
return 0;
}