我试图在php中创建一个点对点应用程序,以同样的方式工作。它适用于内部地址,但是当我尝试将数据发送到外部地址时,消息永远不会到达。显然我错过了一些地址转换,但我对如何使用PHP套接字感到茫然。有可能吗?
这是我目前收到消息的代码,我先运行该消息等待一些消息:
<?php
$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP) or die("Could not create socket: " . socket_strerror(socket_last_error($socket)));
socket_bind($socket, "0.0.0.0", 100) or die("Could not bind socket: " . socket_strerror(socket_last_error($socket)));
$ret = "";
$from_ip = "";
$from_port = 0;
echo "waiting...\n";
socket_recvfrom($socket, $ret, 6, 0, $from_ip, $from_port);
var_dump($ret, $from_ip, $from_port);
socket_close($socket);
然后在等待时,我运行此代码发送消息:
<?php
$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP) or die("Could not create socket: " . socket_strerror(socket_last_error($socket)));
$to_ip = "externalip"; //works with internal "127.0.0.1";
$to_port = 100;
$message = "hello!";
socket_sendto($socket, $message, strlen($message), 0, $to_ip, $to_port);
echo "sent\n";
socket_close($socket);
但它发送和退出,但第一个脚本仍在等待...... 已经有一段时间了,有人可以帮帮我吗?
- 编辑 -
好的,我已经实现了一个昏迷服务器并为它设置了端口转发:
<?php
echo "-- STUN SERVER --\n";
$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP) or die("Could not create socket: " . socket_strerror(socket_last_error($socket)));
socket_bind($socket, "0.0.0.0", 5104) or die("Could not bind socket: " . socket_strerror(socket_last_error($socket)));
do {
$ret = "";
$from = "";
$port = 0;
echo "waiting...\n";
socket_recvfrom($socket, $ret, 6, 0, $from, $port);
echo "received: $ret\n";
$message = $from.":".$port;
socket_sendto($socket, $message, strlen($message), 0, $from, $port);
echo "sent: $message\n\n";
}
while (true);
并更改了我的第一个脚本以从stun服务器获取其ip / port:
<?php
$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP) or die("Could not create socket: " . socket_strerror(socket_last_error($socket)));
socket_bind($socket, "0.0.0.0", 100) or die("Could not bind socket: " . socket_strerror(socket_last_error($socket)));
$ret = "";
$from = "";
$port = 0;
echo "sending info to stun server...\n";
$to_ip = "stunip";
$to_port = 5104;
$message = "get_ip";
socket_sendto($socket, $message, strlen($message), 0, $to_ip, $to_port);
echo "waiting for stun...\n";
$stuninfo = "";
socket_recvfrom($socket, $stuninfo, 25, 0, $from, $port);
var_dump($stuninfo); // i use this info in my second script
echo "waiting...\n";
socket_recvfrom($socket, $ret, 6, 0, $from, $port);
var_dump($ret, $from, $port);
socket_close($socket);
它从stun服务器获取信息ok并等待另一个连接,但是当我在我的第二个脚本中使用该信息时,第一个脚本仍然没有收到任何消息..还有另一个步骤我&#39我失踪了?