/**
* 服务主体循环方法
*
* 接收请求及数据等相关处理
* 触发对应的回调事件
*
* @return void
*/
private function loop()
{
$arrRead = array($this->socket);
$arrWrite = null;
$arrExcept = null;
foreach ($this->connections as $key => $session) {
$arrRead[] = $session->socket;
}
$changes = socket_select($arrRead, $arrWrite, $arrExcept, $this->options['timeout']);
if ($changes === false) {
Exception::newThrow($this->socket);
}
if ($changes == 0) {
return;
}
foreach ($arrRead as $socket) {
if ($socket == $this->socket) {
$this->doAccept();
continue;
}
$this->doRead($socket);
}
}
/**
* 构造函数，初始化socket
*
* 不能直接new创建连接，只能通过factory()方法创建
*
* @param string $host 服务器ip地址
* @param number $port 服务器端口
*/
private function __construct($host, $port)
{
$this->host = $host;
$this->port = $port;
$this->socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($this->socket === false) {
throw new Exception('Socket create failure');
}
if (socket_set_option($this->socket, SOL_SOCKET, SO_REUSEADDR, 1) === false) {
Exception::newThrow($this->socket);
}
$this->running = true;
}