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php - socket_read在使用socket_accept传入多个客户端时解除阻止

转载 作者:行者123 更新时间:2023-12-03 11:55:40 25 4
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我有客户端可以连接到我的服务器套接字,像这样在套接字中读写

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

我将socket_set_nonblock设置为在socket_accept中不阻塞我的套接字
这项工作很好,但是对于连接到我的服务器的客户端,我不是非阻塞客户端
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 ...";
}

我测试了socket_set_nonblock($ newc)和选项SO_RCVTIMEO以防止在socket_read中阻止$ newc,但是我未能成功取消阻止

我像下面那样测试socket_select,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 时,回显“做某事...” 在第二个客户端输入任何内容之前不起作用
对于非阻塞的socket_read我该怎么办?这是不可能的,还是我使用的socket_select不正确?

最佳答案

我花了几个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);

关于php - socket_read在使用socket_accept传入多个客户端时解除阻止,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27943458/

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