forked from projectmoon/tenebrous-dicebot
73 lines
1.6 KiB
JavaScript
73 lines
1.6 KiB
JavaScript
'use strict';
|
|
|
|
/* eslint-disable
|
|
class-methods-use-this
|
|
*/
|
|
const ws = require('ws');
|
|
const BaseServer = require('./BaseServer');
|
|
|
|
module.exports = class WebsocketServer extends BaseServer {
|
|
constructor(server) {
|
|
super(server);
|
|
this.wsServer = new ws.Server({
|
|
noServer: true,
|
|
path: this.server.sockPath,
|
|
});
|
|
|
|
this.server.listeningApp.on('upgrade', (req, sock, head) => {
|
|
if (!this.wsServer.shouldHandle(req)) {
|
|
return;
|
|
}
|
|
|
|
this.wsServer.handleUpgrade(req, sock, head, (connection) => {
|
|
this.wsServer.emit('connection', connection, req);
|
|
});
|
|
});
|
|
|
|
this.wsServer.on('error', (err) => {
|
|
this.server.log.error(err.message);
|
|
});
|
|
|
|
const noop = () => {};
|
|
|
|
setInterval(() => {
|
|
this.wsServer.clients.forEach((socket) => {
|
|
if (socket.isAlive === false) {
|
|
return socket.terminate();
|
|
}
|
|
|
|
socket.isAlive = false;
|
|
socket.ping(noop);
|
|
});
|
|
}, this.server.heartbeatInterval);
|
|
}
|
|
|
|
send(connection, message) {
|
|
// prevent cases where the server is trying to send data while connection is closing
|
|
if (connection.readyState !== 1) {
|
|
return;
|
|
}
|
|
|
|
connection.send(message);
|
|
}
|
|
|
|
close(connection) {
|
|
connection.close();
|
|
}
|
|
|
|
// f should be passed the resulting connection and the connection headers
|
|
onConnection(f) {
|
|
this.wsServer.on('connection', (connection, req) => {
|
|
connection.isAlive = true;
|
|
connection.on('pong', () => {
|
|
connection.isAlive = true;
|
|
});
|
|
f(connection, req.headers);
|
|
});
|
|
}
|
|
|
|
onConnectionClose(connection, f) {
|
|
connection.on('close', f);
|
|
}
|
|
};
|