115 lines
3.5 KiB
PHP
115 lines
3.5 KiB
PHP
<?php
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require_once __DIR__.'/../vendor/autoload.php';
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use Swoole\WebSocket\Server;
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use Swoole\Http\Request;
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use Swoole\WebSocket\Frame;
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use Utopia\CLI\Console;
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/**
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* TODO List
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*
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* - Abuse Control / x mesages per connection
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* - CORS Validation
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* - Limit payload size
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* - Message structure: { status: "ok"|"error", event: EVENT_NAME, data: <any arbitrary data> }
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* - JWT Authentication (in path / or in message)
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*
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*
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* - https://github.com/hhxsv5/php-sse
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* - https://github.com/shuixn/socket.io-swoole-server
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*/
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ini_set('default_socket_timeout', -1);
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Swoole\Runtime::enableCoroutine(SWOOLE_HOOK_ALL);
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$server = new Server("0.0.0.0", 80);
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$connections = [];
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$server->on("workerStart", function ($server, $workerId) use (&$connections) {
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Console::success('Worker '.++$workerId.' started succefully');
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$attempts = 0;
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$start = time();
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while ($attempts < 3) {
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try {
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$redis = new Redis();
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$redis->connect('redis', 6379);
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$redis->setOption(Redis::OPT_READ_TIMEOUT, -1);
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if($attempts > 0) {
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Console::error('Connection lost (lasted '.(time() - $start).' seconds). Attempting restart (attempt #'.$attempts.')');
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}
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if($redis->ping('')) {
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$attempts = 0;
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Console::success('Connection established');
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}
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else {
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Console::error('Connection failed');
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}
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sleep(1); // 1 sec delay between connection attempts
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$redis->subscribe(['realtime'], function($redis, $channel, $message) use ($server, $workerId, &$connections) {
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$message = 'Message from worker #'.$workerId.'; '.$message;
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Console::warning('Total connections: '.count($connections));
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foreach($connections as $fd) {
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if ($server->exist($fd)
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&& $server->isEstablished($fd)
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) {
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Console::info('Sending message: '.$message.' (user: '.$fd.', worker: '.$workerId.')');
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$server->push($fd, $message, SWOOLE_WEBSOCKET_OPCODE_TEXT,
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SWOOLE_WEBSOCKET_FLAG_FIN | SWOOLE_WEBSOCKET_FLAG_COMPRESS);
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}
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else {
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$server->close($fd);
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}
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}
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});
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$attempts++;
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} catch (\Throwable $th) {
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$attempts++;
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continue;
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}
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}
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Console::error('Failed to restart connection...');
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});
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$server->on("start", function (Server $server) {
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Console::success('Server started succefully');
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});
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$server->on('open', function(Server $server, Request $request) use (&$connections) {
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$connections[] = $request->fd;
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Console::info("Connection open (user: {$request->fd}, worker: {$server->getWorkerId()})");
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Console::info('Total connections: '.count($connections));
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$server->push($request->fd, json_encode(["hello", count($connections)]));
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});
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$server->on('message', function(Server $server, Frame $frame) {
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if($frame->data === 'reload') {
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$server->reload();
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}
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Console::info('Recieved message: '.$frame->data.' (user: '.$frame->fd.', worker: '.$server->getWorkerId().')');
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$server->push($frame->fd, json_encode(["hello, worker_id:".$server->getWorkerId(), time()]));
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});
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$server->on('close', function(Server $server, int $fd) {
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Console::error('Connection close: '.$fd);
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});
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$server->start(); |