Sharkey/src/server/api/streaming.ts
2020-04-26 11:19:57 +09:00

66 lines
1.6 KiB
TypeScript

import * as http from 'http';
import * as websocket from 'websocket';
import * as redis from 'redis';
import MainStreamConnection from './stream';
import { ParsedUrlQuery } from 'querystring';
import authenticate from './authenticate';
import { EventEmitter } from 'events';
import config from '../../config';
module.exports = (server: http.Server) => {
// Init websocket server
const ws = new websocket.server({
httpServer: server
});
ws.on('request', async (request) => {
const q = request.resourceURL.query as ParsedUrlQuery;
// TODO: トークンが間違ってるなどしてauthenticateに失敗したら
// コネクション切断するなりエラーメッセージ返すなりする
// (現状はエラーがキャッチされておらずサーバーのログに流れて邪魔なので)
const [user, app] = await authenticate(q.i as string);
const connection = request.accept();
let ev: EventEmitter;
// Connect to Redis
const subscriber = redis.createClient(
config.redis.port,
config.redis.host,
{
password: config.redis.pass
}
);
subscriber.subscribe(config.host);
ev = new EventEmitter();
subscriber.on('message', async (_, data) => {
const obj = JSON.parse(data);
ev.emit(obj.channel, obj.message);
});
connection.once('close', () => {
subscriber.unsubscribe();
subscriber.quit();
});
const main = new MainStreamConnection(connection, ev, user, app);
connection.once('close', () => {
ev.removeAllListeners();
main.dispose();
});
connection.on('message', async (data) => {
if (data.utf8Data === 'ping') {
connection.send('pong');
}
});
});
};