如何通过$ _SESSION变量到WebSocket的服务器？ [英] How to pass $_SESSION variables to a websocket server?
问题描述
我在网上搜索了很多，但没有找到有用的线索。
I have searched a lot on the web but didn't find a useful clue.
我有一个WebSocket伺服器和Web服务器我的本地机器上同时运行。
I have a websocket server and a web server running together on my local machine.
我需要$ _SESSION数据传递到WebSocket伺服器当客户端使用浏览器API新的WebSocket（WS：// localhost的）'连接到它（请求使用反向代理发送到WebSocket的，当与一个'升级'头接收请求）知道这一点。
I need to pass $_SESSION data to the websocket server when a client connects to it using the browser API 'new WebSocket("ws://localhost")' (the request is send to the websocket using a reverse proxy, which knows it when receives requests with an 'Upgrade' header).
问题的关键是，客户端成功连接到服务器WS，但我需要使用由HTTP Web服务器设置好的了$ _SESSION变量也恢复他们的会话数据。
The point is that the clients successfully connect to the ws server, but I need to recover also their SESSION data using the $_SESSION variables setted by the HTTP web server.
其实我的情况是这样的（我用的棘轮库）：
Actually my situation is this (I am using the Ratchet library):
use Ratchet\Server\IoServer;
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;
use MyApp\MyAppClassChat;
require dirname(__DIR__) . '/vendor/autoload.php';
$server = IoServer::factory(new HttpServer(new WsServer(new MyAppClass())), 8080);
$server->run();
该MyAppClass是很简单的：
The MyAppClass is very simple:
<?php
namespace MyAppClass;
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;
class MyAppClass implements MessageComponentInterface {
protected $clients;
public function __construct() {
$this->clients = new \SplObjectStorage;
}
public function onOpen(ConnectionInterface $conn) {
/* I would like to put recover the session infos of the clients here
but the session_start() call returns an empty array ($_SESSION variables have been previuosly set by the web server)*/
session_start();
var_dump($_SESSION) // empty array...
echo "New connection! ({$conn->resourceId})\n";
}
public function onMessage(ConnectionInterface $from, $msg) {
$numberOfReceivers = count($this->clients) -1;
echo sprintf('Connection %d sending message "%s" to %d other connection%s' . "\n", $from->resourceId, $msg,
$numberOfReceivers, $numberOfReceivers == 1 ? '' : 's');
$this->clients->rewind();
while ($this->clients->valid())
{
$client = $this->clients->current();
if ($client !== $from) {
$client->send($msg);
}
$this->clients->next();
}
}
public function onClose(ConnectionInterface $conn) {
$this->clients->detach($conn);
echo "Connection {$conn->resourceId} has disconnected\n";
}
public function onError(ConnectionInterface $conn, \Exception $e) {
echo "An error has occurred: {$e->getMessage()}\n";
$conn->close();
}
}
有没有办法做到这一点与我的实际的布局或者我应该要使用Apache的配置
mod_proxy_wstunnel模块？
Is there a way to do that with my actual layout or should I configure apache in order to use mod_proxy_wstunnel module?
感谢您的帮助！
推荐答案
至于其他StackOverflow的答案显示（棘轮没有Symfony的会议，<一个href=\"http://stackoverflow.com/questions/16183917/starting-a-session-within-a-ratchet-websocket-connection\">Starting棘轮WebSocket连接内的会话），有没有办法直接分享Apache和棘轮过程之间的$ _SESSION变量。这是可能的，但是，启动与Apache服务器的会话，然后将棘轮code内访问会话cookie。
As other StackOverflow answers show (Ratchet without Symfony session, Starting a session within a ratchet websocket connection), there is no way to directly share the $_SESSION variable between Apache and the Ratchet process. It is possible, however, to start a session with the Apache server and then access the session cookie within the Ratchet code.
Apache服务器的index.html的启动会话：
Apache server's index.html starts the session:
<?php
// Get the session ID.
$ses_id = session_id();
if (empty($ses_id)) {
session_start();
$ses_id = session_id();
}
?><!DOCTYPE html> ...
棘轮MessageComponentInterface code访问会话令牌：
Ratchet MessageComponentInterface code accesses the session token:
public function onMessage(ConnectionInterface $from, $msg) {
$sessionId = $from->WebSocket->request->getCookies()['PHPSESSID'];
# Do stuff with the token...
}
在两个服务器知道用户的会话令牌，他们可以使用该令牌通过MySQL数据库共享信息（这是我做的）：
Once both servers know the user's session token, they can use the token to share information through a MySQL database (which is what I do):
# Access session data from a database:
$stmt = $this->mysqli->prepare("SELECT * FROM users WHERE cookie=?");
$stmt->bind_param('s', $sessionId);
$stmt->execute();
$result = $stmt->get_result();
另外，你可以做的进程间通信的更奇特的形式：
Alternatively, you could do a more exotic form of inter-process communication:
# Ratchet server:
$opts = array(
'http'=>array(
'method'=>'GET',
'header'=>"Cookie: PHPSESSID=$sessionId\r\n"
)
);
$context = stream_context_create($opts);
$json = file_get_contents('http://localhost:80/get_session_info.php', false, $context);
$session_data = json_decode($json);
# Apache server's get_session_info.php
# Note: restrict access to this path so that remote users can't dump
# their own session data.
echo json_encode($_SESSION);
这篇关于如何通过$ _SESSION变量到WebSocket的服务器？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
