Merge pull request #49 from clue-labs/examples

clue · web-flow · commit 3fca60fcd035 · 2016-12-19T23:23:46.000+01:00
Add examples
diff --git a/README.md b/README.md
@@ -46,6 +46,8 @@ provided to the listen method:
 $socket->listen(1337, '192.168.0.1');
 ```
 
+See also the [examples](examples).
+
 Here's a client that outputs the output of said server and then attempts to
 send it a string.
 For anything more complex, consider using the
diff --git a/examples/01-echo.php b/examples/01-echo.php
@@ -0,0 +1,27 @@
+<?php
+
+// Just start this server and connect to it. Everything you send to it will be
+// sent back to you.
+//
+// $ php examples/01-echo.php 8000
+// $ telnet localhost 8000
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server($loop);
+$server->listen(isset($argv[1]) ? $argv[1] : 0);
+
+$server->on('connection', function (ConnectionInterface $conn) use ($loop) {
+    echo '[connected]' . PHP_EOL;
+    $conn->pipe($conn);
+});
+
+echo 'Listening on ' . $server->getPort() . PHP_EOL;
+
+$loop->run();
diff --git a/examples/02-chat-server.php b/examples/02-chat-server.php
@@ -0,0 +1,49 @@
+<?php
+
+// Just start this server and connect with any number of clients to it.
+// Everything a client sends will be broadcasted to all connected clients.
+//
+// $ php examples/02-chat-server.php 8000
+// $ telnet localhost 8000
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server($loop);
+$server->listen(isset($argv[1]) ? $argv[1] : 0, '0.0.0.0');
+
+$clients = array();
+
+$server->on('connection', function (ConnectionInterface $client) use (&$clients) {
+    // keep a list of all connected clients
+    $clients []= $client;
+    $client->on('close', function() use ($client, &$clients) {
+        unset($clients[array_search($client, $clients)]);
+    });
+
+    // whenever a new message comes in
+    $client->on('data', function ($data) use ($client, &$clients) {
+        // remove any non-word characters (just for the demo)
+        $data = trim(preg_replace('/[^\w\d \.\,\-\!\?]/u', '', $data));
+
+        // ignore empty messages
+        if ($data === '') {
+            return;
+        }
+
+        // prefix with client IP and broadcast to all connected clients
+        $data = $client->getRemoteAddress() . ': ' . $data . PHP_EOL;
+        foreach ($clients as $client) {
+            $client->write($data);
+        }
+    });
+});
+
+echo 'Listening on ' . $server->getPort() . PHP_EOL;
+
+$loop->run();
diff --git a/examples/03-benchmark.php b/examples/03-benchmark.php
@@ -0,0 +1,44 @@
+<?php
+
+// Just start the server and connect to it. It will count the number of bytes
+// sent for each connection and will print the average throughput once the
+// connection closes.
+//
+// $ php examples/03-benchmark.php 8000
+// $ telnet localhost 8000
+// $ echo hello world | nc -v localhost 8000
+// $ dd if=/dev/zero bs=1M count=1000 | nc -v localhost 8000
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server($loop);
+$server->listen(isset($argv[1]) ? $argv[1] : 0);
+
+$server->on('connection', function (ConnectionInterface $conn) use ($loop) {
+    echo '[connected]' . PHP_EOL;
+
+    // count the number of bytes received from this connection
+    $bytes = 0;
+    $conn->on('data', function ($chunk) use (&$bytes) {
+        $bytes += strlen($chunk);
+    });
+
+    // report average throughput once client disconnects
+    $t = microtime(true);
+    $conn->on('close', function () use ($conn, $t, &$bytes) {
+        $t = microtime(true) - $t;
+        echo '[disconnected after receiving ' . $bytes . ' bytes in ' . round($t, 3) . 's => ' . round($bytes / $t / 1024 / 1024, 1) . ' MiB/s]' . PHP_EOL;
+    });
+});
+
+$server->on('error', 'printf');
+
+echo 'bound to ' . $server->getPort() . PHP_EOL;
+
+$loop->run();
