UDP写入套接字并同时从套接字读取(再次修改)

时间:2009-03-30 10:53:21

标签: php sockets udp

服务器:

<?php
error_reporting(E_ALL | E_STRICT);

$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

socket_bind($socket, '192.168.1.7', 11104);

$from = "";
$port = 0;
socket_recvfrom($socket, $buf, 12, 0, $from, $port);
//$buf=socket_read($socket, 2048);

echo "Received $buf from remote address $from and remote port $port" . PHP_EOL;
$msg="Sikerult";

//socket_write($socket, $msg, strlen($msg));
socket_sendto($socket, $msg, strlen($msg), 0, '192.168.1.6', 11105);
//socket_close($socket);
?>

客户端:

<?php
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
$result = socket_connect($sock, '192.168.1.6', 11105);
$msg = "Sikerult";
$len = strlen($msg);
//socket_write($sock, $msg, strlen($msg));
socket_sendto($sock, $msg, $len, 0, '192.168.1.7', 11104);
//$buf=socket_read($sock, 2048);
socket_recvfrom($sock, $buf, 12, 0, $from, $port);
echo $buf;
socket_close($sock);
?>

服务器从客户端接收数据,但客户端没有从服务器获得任何内容,也没有停止运行。

2 个答案:

答案 0 :(得分:5)

如果它是UDP套接字,那么为什么首先需要连接。这不够吗?

<?php
    $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

    $msg = "Sikerult";
    $len = strlen($msg);

    socket_sendto($sock, $msg, $len, 0, '192.168.1.7', 11104);

    socket_recvfrom($sock, $buf, 12, 0, '192.168.1.7', 11104);
    echo $buf;

    socket_close($sock);
?>

答案 1 :(得分:0)

我假设192.168.1.7:11104是您的服务器。

在服务器中,您需要将数据包发送回您收到的地址:

//...
$msg="Sikerult";
//...
socket_sendto($socket, $msg, strlen($msg), 0, $from, $port);

在客户端,你正在连接自己。您应该将它连接到服务器:

$srvIP = '192.168.1.7';
$srvPort = 11104;
$result = socket_connect($sock, $srvIP, $srvPort);
$msg = "Sikerult";
$len = strlen($msg);
socket_send($sock, $msg, $len, 0);
socket_recv($sock, $buf, 12, 0);