Question

我正在尝试创建一个PHP脚本，它执行以下操作：

开始在指定端口上侦听连接和消息
连接到指定端口，进行通信

这就是它的样子（我只复制部分脚本，因为它跨越多个类，并且很难复制每个部分）：

脚本中主要对象的构造

//connecting to the designated port for communication
$this->nodeServer = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($this->nodeServer, SOL_SOCKET, SO_REUSEADDR, 1);

if (socket_connect($this->nodeServer,"xxx.xxx.xxx.xxx",'14000') === false) {
    throw new UnexpectedValueException("Failed to connect: " . socket_strerror(socket_late_error()));
    exit;
}

//starting to listen on the designated port
$this->socketListener = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($this->socketListener, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($this->socketListener, 0, $this->listeningPort);
socket_listen($this->socketListener);

//adding these two sockets(the connected one, and the listener one) to an array
$this->addSocket($this->nodeServer);
$this->addSocket($this->socketListener);

在主文件中，我执行以下操作：

主要文件

$connectedToNode=true;

while ($connectedToNode) {
    //manage multipal connections
    $changedRead = $PHPWorker->socketList;
    $changedWrite = $PHPWorker->socketList;
    socket_select($changedRead, $changedWrite, $null, 0, 10);

    echo 'This is a test echo'; // ECHO NR. 1
    //check for new socket
    if (in_array($PHPWorker->socketListener, $changedRead)) {
        $socket_new = socket_accept($PHPWorker->socketListener); //accpet new socket
        $PHPWorker->addSocket($socket_new); //add socket to client array

        $header = socket_read($socket_new, 1024); //read data sent by the socket
        socket_getpeername($socket_new, $ip); //get ip address of connected socket
        echo "Someone connected"; // ECHO NR. 2
        echo $ip; // ECHO NR. 3

        //make room for new socket
        $found_socket = array_search($PHPWorker->socketListener, $changedRead);
        unset($changedRead[$found_socket]);
    }

    foreach ($changedRead as $changed_socket) { 
        //if I get an incomming message, process it
        while(socket_recv($changed_socket, $buf, 1024, 0) >= 1)
        {
            echo "This is the second test"; // ECHO NR. 4
            $socketid = array_search($changed_socket, $PHPWorker->socketList);
            $PHPWorker->processMessage($socketid, $buf);
        }

        $buf = @socket_read($changed_socket, 1024, PHP_NORMAL_READ);
        if ($buf === false) { // check disconnected client
            // remove client for array
            $socketid = array_search($changed_socket, $PHPWorker->socketList);
            if (($socketid==0) || ($socketid==1)) {
                //the first element is the "nodeServer", the second element is the listener, if either one goes away, stop the script
                $connectedToNode=false;
            }

            //unset the disconnected client
            unset($PHPWorker->socketList[$socketid]);
            unset($PHPWorker->socketData[$socketid]);
        }
    }
}

我目前设法连接到＆＃34; NodeServer＆＃34;，我能够与它通信，它工作得很好，但我无法设法从另一个PHP脚本连接到这个PHP脚本的监听器。

这是我尝试的方式（来自另一个对象的另一部分）：

$this->PHPHelper = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($this->PHPHelper, SOL_SOCKET, SO_REUSEADDR, 1);
$hostip=gethostbyname('myhost.name.here');
if (!socket_connect($this->PHPHelper, $hostip, $portOnWhichMainSocketIsListening)) {
    echo socket_strerror(socket_last_error());
    socket_clear_error();
    $this->PHPHelper=null;
} else {
    socket_send($this->PHPHelper, "test\0", strlen("test\0"), 0);
}

while循环中的回声是用于测试的，奇怪的是，echo nr 1只被触发一次，nr.2和nr.3永远不会被触发，每次发送消息时都会触发nr.4从NodeServer到监听器php脚本。

可能是什么问题？我究竟做错了什么？不应该在每个循环中发生第一次回声吗？

此脚本的部分内容来自此页面的灵感：http://www.phpbuilder.com/articles/application-architecture/optimization/creating-real-time-applications-with-php-and-websockets.html

修改好吧，似乎我找到了一个解决方案，但我仍然不明白为什么会这样做：

在以下代码的 while 部分：

foreach ($changedRead as $changed_socket) { 
    //if I get an incomming message, process it
    while(socket_recv($changed_socket, $buf, 1024, 0) >= 1)
    {
        echo "This is the second test"; // ECHO NR. 4
        ...
    }
}

我已经插入了break 2;命令，该命令返回主循环的权限，以继续执行。这样，我可以从其他PHP文件连接到侦听器套接字，并且回声也会触发。但我的问题是，为什么在没有break命令的情况下，执行会停留在内部而和周期内？

PHP套接字 - 无法连接

0 个答案: