我已从以下来源复制了客户端/服务器套接字程序
但是当我在浏览器中运行它时会出现以下错误消息:
socket_bind()原因:通常只允许使用每个套接字地址(协议/网络地址/端口)。
我搜索并尝试了不同的解决方案,但无法找到解决方案。请帮助我的代码如下。
Server.php
<?php
error_reporting(E_ALL);
/* Permitir al script esperar para conexiones. */
//set_time_limit(0);
/* Activar el volcado de salida implícito, así veremos lo que estamo obteniendo
* mientras llega. */
ob_implicit_flush();
$address = '127.0.0.1';
$port = 9500;
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
echo "socket_create() falló: razón: " . socket_strerror(socket_last_error()) . "\n";
}
if (socket_bind($sock, $address, $port) === false) {
echo "socket_bind() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
}
if (socket_listen($sock, 5) === false) {
echo "socket_listen() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
}
//clients array
$clients = array();
do {
$read = array();
$read[] = $sock;
$read = array_merge($read,$clients);
// Set up a blocking call to socket_select
if(socket_select($read,$write = NULL, $except = NULL, $tv_sec = 5) < 1)
{
// SocketServer::debug("Problem blocking socket_select?");
continue;
}
// Handle new Connections
if (in_array($sock, $read)) {
if (($msgsock = socket_accept($sock)) === false) {
echo "socket_accept() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
break;
}
$clients[] = $msgsock;
$key = array_keys($clients, $msgsock);
/* Enviar instrucciones. */
$msg = "\nBienvenido al Servidor De Prueba de PHP. \n" .
"Usted es el cliente numero: {$key[0]}\n" .
"Para salir, escriba 'quit'. Para cerrar el servidor escriba 'shutdown'.\n";
socket_write($msgsock, $msg, strlen($msg));
}
// Handle Input
foreach ($clients as $key => $client) { // for each client
if (in_array($client, $read)) {
if (false === ($buf = socket_read($client, 2048, PHP_NORMAL_READ))) {
echo "socket_read() falló: razón: " . socket_strerror(socket_last_error($client)) . "\n";
break 2;
}
if (!$buf = trim($buf)) {
continue;
}
if ($buf == 'quit') {
unset($clients[$key]);
socket_close($client);
break;
}
if ($buf == 'shutdown') {
socket_close($client);
break 2;
}
$talkback = "Cliente {$key}: Usted dijo '$buf'.\n";
socket_write($client, $talkback, strlen($talkback));
echo "$buf\n";
}
}
} while (true);
socket_close($sock);
?>
Client.php
<?php
//error_reporting(E_ALL);
echo "<h2>TCP/IP Connection</h2>\n";
/* Get the port for the WWW service. */
//$service_port = getservbyname('www', 'tcp');
$service_port=9500;
/* Get the IP address for the target host. */
$address='127.0.0.1';
/* Create a TCP/IP socket. */
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {
echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
} else {
echo "OK.\n";
}
echo "Attempting to connect to '$address' on port '$service_port'...";
$result = socket_connect($socket, $address, $service_port);
if ($result === false) {
echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
} else {
echo "OK.\n";
}
$in = "HEAD / HTTP/1.1\r\n";
$in .= "Host: www.example.com\r\n";
$in .= "Connection: Close\r\n\r\n";
$out = '';
echo "Sending HTTP HEAD request...";
socket_write($socket, $in, strlen($in));
echo "OK.\n";
echo "Reading response:\n\n";
while ($out = socket_read($socket, 2048)) {
echo $out;
}
echo "Closing socket...";
socket_close($socket);
echo "OK.\n\n";
?>
答案 0 :(得分:0)
除了评论中发布的@Barmar链接外,我还发现了this article和this one,每个都指出您可能用完了端口或使用了端口无效的端口号。
在这方面我没有太多使用Windows的经验,但第二篇文章至少声称你可以使用1024-5000范围内的端口,或者如果你想要更改注册表设置走得更高。我会尝试将您的端口设置为该范围内的某些内容,例如4950,并查看是否可以解决您的问题。
对于任何感兴趣的人来说,有问题的注册表项是HKLM\System\CurrentControlSet\Services\Tcpip\Parameters\MaxUserPort
,值可以达到65534.但是,我怀疑这是必要的步骤,除非你已经有~4000个已经运行的其他进程正在耗尽所有可用端口。