UDP同时写入socket和从socket读取(再次修改) [英] UDP write to socket and read from socket at the same time(again with modification)

问题描述

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:

<?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，但客户端从服务器没有得到任何数据并且没有停止运行.

The server receives the data from the client but the client got nothing from the server and not stop running.

推荐答案

如果是 UDP 套接字，那么首先为什么需要连接.这还不够吗?

If it is a UDP socket then why do you need to connect in the first place. Doesn't this suffice?

<?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);
?>

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