Question

我有服务器套接字，客户端可以连接到我，像这样读取和写入

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_bind($socket, $address, $port))
socket_listen($socket);
socket_set_nonblock($socket);

我将socket_set_nonblock设置为在socket_accept中取消阻塞我的套接字这项工作很好但是对于连接到我的服务器的客户端我不能阻止客户端

while(true){
    if (($newc = @socket_accept($socket)) !== false) {
        //socket_set_nonblock($newc);
        //socket_set_option($socket,SOL_SOCKET, SO_RCVTIMEO, array("sec"=>5, "usec"=>0));
        $clients[] = $newc;
        $data = socket_read($newc, 1024, PHP_NORMAL_READ);
    }
    echo "do sometings ...";
}

我测试socket_set_nonblock（$ newc）和选项SO_RCVTIMEO以防止在socket_read中阻止$ newc但是我没有成功阻止

我测试socket_select如下，但这不起作用

 $write = array();
 $expect = NULL;
 socket_select($clients, $write, $except, 0);

当第二个客户端连接到程序 echo“做某事......” 在第二个客户端输入任何内容之前不起作用对于非阻塞socket_read我必须做什么？这是不可能的，或者我使用socket_select不正确？

Answer 1

我投入了数小时才终于使工作正常。 socket_set_nonblock（$ newsock）;每个收入客户对于Linux（CentOS）PHP7都是必需的，但它应在Windows PHP5上运行。

<?php
ini_set('error_reporting', E_ALL ^ E_NOTICE);
ini_set('display_errors', 1);
// Set time limit to indefinite execution
set_time_limit(0);
// Set the ip and port we will listen on
$address = '127.0.0.1';
$port = 6901;
ob_implicit_flush();
// Create a TCP Stream socket
$sock = socket_create(AF_INET, SOCK_STREAM, 0);
// Bind the socket to an address/port
socket_bind($sock, $address, $port) or die('Could not bind to address');
// Start listening for connections
socket_listen($sock);
// Non block socket type
socket_set_nonblock($sock);
// Clients
$clients = [];
// Loop continuously
while (true) {
    // Accept new connections
    if ($newsock = socket_accept($sock)) {
        if (is_resource($newsock)) {
            // Write something back to the user
            socket_write($newsock, ">", 1).chr(0);
            // Non bloco for the new connection
            socket_set_nonblock($newsock);
            // Do something on the server side
            echo "New client connected\n";
            // Append the new connection to the clients array
            $clients[] = $newsock;
        }
    }
    // Polling for new messages
    if (count($clients)) {
        foreach ($clients AS $k => $v) {
            // Check for new messages
            $string = '';
            if ($char = socket_read($v, 1024)) {
                $string .= $char;
            }
            // New string for a connection
            if ($string) {
                echo "$k:$string\n";
            } else {
                if ($seconds > 60) {
                    // Ping every 5 seconds for live connections
                    if (false === socket_write($v, 'PING')) {
                        // Close non-responsive connection
                        session_close($clients[$k]);
                        // Remove from active connections array
                        unset($clients[$k]);
                    }
                    // Reset counter
                    $seconds = 0;
                }
            }
        }
    }
    sleep(1);
    $seconds++;
}
// Close the master sockets
socket_close($sock);

socket_read在使用socket_accept进入多个客户端时解除阻塞

1 个答案: