Account for expected errors

AccountedExceptions.php

<?php
namespace MyNamespace;
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;

class AccountedExceptions MessageComponentInterface {
    protected $_app;

    public function __construct($app) {
        $this->_app = $app;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->_app->onOpen($conn);
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        $this->_app->onMessage($from, $msg);
    }

    public function onClose(ConnectionInterface $conn) {
        $this->_app->onClose($conn);
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        if ('Tried to write to closed stream.' !== $e->getMessage()) {
            $this->_app->onError($conn, $e);
        }
    }
}

bin.php

<?php
namespace MyNamespace;

    $server = new Ratchet\App;
    $server->route('/', new AccountedExceptions(new Ratchet\Server\EchoServer()));
    $server->run();