【发布时间】:2011-01-14 15:28:35
【问题描述】:
完全披露:有一个类似的问题here。
有什么方法可以测试特定端口是否打开并使用 PHP 正确转发?具体来说,如何使用套接字连接到具有给定端口的给定用户?
WhatsMyIP.org/ports 的“自定义端口测试”部分就是一个例子。
【问题讨论】:
标签: php portforwarding
完全披露:有一个类似的问题here。
有什么方法可以测试特定端口是否打开并使用 PHP 正确转发?具体来说,如何使用套接字连接到具有给定端口的给定用户?
WhatsMyIP.org/ports 的“自定义端口测试”部分就是一个例子。
【问题讨论】:
标签: php portforwarding
xxxxx-fpm:
image: ....
healthcheck:
# Check until the FPM port is in in the LISTEN list
# test: ["CMD-SHELL", "netstat -an | grep -q -F \":9000\""]
# Or use php to test php since the non alpine fpm image has no binary able to know if a port is in listen mode
test: ["CMD-SHELL", "php -r '$$c = @fsockopen(\"localhost\", 9000); if (is_resource($$c)) { fwrite(STDOUT, \"OK\"); fclose($$c); exit(0); } else { fwrite(STDERR, \"FAIL\"); exit(1); }'"]
interval: 2s
timeout: 3s
retries: 30
start_period: 10s
【讨论】:
我不确定您所说的“正确转发”是什么意思,但希望这个示例能够解决问题:
$host = 'stackoverflow.com';
$ports = array(21, 25, 80, 81, 110, 443, 3306);
foreach ($ports as $port)
{
$connection = @fsockopen($host, $port);
if (is_resource($connection))
{
echo '<h2>' . $host . ':' . $port . ' ' . '(' . getservbyport($port, 'tcp') . ') is open.</h2>' . "\n";
fclose($connection);
}
else
{
echo '<h2>' . $host . ':' . $port . ' is not responding.</h2>' . "\n";
}
}
输出:
stackoverflow.com:21 is not responding.
stackoverflow.com:25 is not responding.
stackoverflow.com:80 (http) is open.
stackoverflow.com:81 is not responding.
stackoverflow.com:110 is not responding.
stackoverflow.com:443 is not responding.
stackoverflow.com:3306 is not responding.
有关端口号的完整列表,请参阅 http://www.iana.org/assignments/port-numbers。
【讨论】:
$connection = @fsockopen($host, $port, $errno, $errstr, 30);php.net/fsockopen