62 lines
2.3 KiB
PHP
62 lines
2.3 KiB
PHP
<?php
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require_once __DIR__."/../vendor/autoload.php";
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use NoccyLabs\React\WebSocket\WebSocketInterface;
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use NoccyLabs\React\WebSocket\WebSocketMiddleware;
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use Psr\Http\Message\ServerRequestInterface;
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use React\Http\HttpServer;
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use React\Http\Message\Response;
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use React\Promise\Promise;
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use React\Socket\SocketServer;
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// The middleware is at the core, as it intercepts and breaks out the websocket
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// connections received by the HttpServer.
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$websockets = new WebSocketMiddleware();
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// The 'connection' handler works like expected. You can't however write any data
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// to the client yet, as the websocket streams have not yet been returned.
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$websockets->on('connection', function (WebSocketInterface $websocket) {
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// This just echoes text received, unless the websocket is part of a group.
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// In this case the message is sent to all websockets in the group.
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$websocket->on('text', function ($text) use ($websocket) {
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// Send a message with the group name starting with '#' to join a group.
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if (str_starts_with($text, '#')) {
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$websocket->setGroup(substr($text,1));
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$websocket->write("joined group {$text}");
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} else {
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// Echo back if not in group, send to group otherwise
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if (!$websocket->getGroup())
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$websocket->write($text);
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else
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foreach ($websocket->getGroup() as $member)
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$member->write($text);
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}
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});
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});
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// Create the server with our middleware chain:
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// error handler -> websocket handler -> http handler
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$server = new HttpServer(
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// Error handler
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function (ServerRequestInterface $request, callable $next) {
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$promise = new Promise(function ($resolve) use ($next, $request) {
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$resolve($next($request));
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});
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return $promise->then(null, function (Exception $e) {
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return Response::plaintext(
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'Internal error: ' . $e->getMessage() . "\n"
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)->withStatus(Response::STATUS_INTERNAL_SERVER_ERROR);
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});
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},
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// WebSocket handler
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$websockets,
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// HTTP handler
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function (ServerRequestInterface $request) {
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return Response::plaintext("Hello world!");
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}
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);
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// Everything else is as expected!
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$socket = new SocketServer("tcp://0.0.0.0:8000");
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$server->listen($socket);
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