无法绑定地址[0]:PHP错误 [英] unable to bind address [0]: php error
问题描述
无法绑定地址[0]:通常只允许每个套接字地址(协议/网络地址/端口)使用一种.错误是由我的PHP服务器页面给出的.我尝试从cmd中查找不同的端口号，就像编写netstat -an一样.我也搜索谷歌，但没有解决方案.我正在使用wamp服务器并在本地工作.谢谢.
unable to bind address [0]: Only one usage of each socket address (protocol/network address/port) is normally permitted.... error is given by my php server page. I tried different port numbers as looking from cmd as writing netstat -an. Also I searched on google but no solution. I am using wamp server and working local . Thanks .
<?php
// don't timeout
//echo phpinfo();
set_time_limit (0);
// set some variables
$host = "127.0.0.1";
$port = 1234;
// create socket
$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create socket\n");
// bind socket to port
$result = socket_bind($socket, $host, $port) or die("Could not bind to socket\n");
// start listening for connections
$result = socket_listen($socket, 3) or die("Could not set up socket listener\n");
echo "Waiting for connections...\n";
// accept incoming connections
// spawn another socket to handle communication
$spawn = socket_accept($socket) or die("Could not accept incoming connection\n");
echo "Received connection request\n";
// write a welcome message to the client
$welcome = "Roll up, roll up, to the greatest show on earth!\n? ";
socket_write($spawn, $welcome, strlen ($welcome)) or die("Could not send connect string\n");
// keep looping and looking for client input
do
{
// read client input
$input = socket_read($spawn, 1024, 1) or die("Could not read input\n");
if (trim($input) != "")
{
echo "Received input: $input\n";
// if client requests session end
if (trim($input) == "END")
{
// close the child socket
// break out of loop
socket_close($spawn);
break;
}
// otherwise...
else
{
// reverse client input and send back
$output = strrev($input) . "\n";
socket_write($spawn, $output . "? ", strlen (($output)+2)) or die("Could not write output\n");
echo "Sent output: " . trim($output) . "\n";
}
}
} while (true);
// close primary socket
socket_close($socket);
echo "Socket terminated\n";
?>
推荐答案
Erm ...正在网页上运行吗?如果是这样，则每次点击该页面都会导致脚本尝试绑定到端口1234，一次只能发生一次.其他所有的人都会死.
Erm...this is running on a web page? If so, each hit to the page will cause the script to try to bind to port 1234, which ain't gonna happen for any but one at a time. All the others will die.
如果不是，那么我有两个原因可以立即想到绑定失败的原因:另一个程序已经在使用该端口，或者防火墙正在阻止该端口.对于127.0.0.1，后者不应该是这种情况，但是我已经看到了奇怪的事情发生.
If it's not, then there are two reasons i can think of right off why binding would fail: either another program is already using the port, or the firewall is blocking it. The latter shouldn't be the case for 127.0.0.1, but i've seen stranger things happen.
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