함수 is ping()

1 개요

is_ping()

• test set

2.2.2.2 → false

8.8.8.8 → true

naver.com → false

yahoo.com → true

2 Bash

PING_TIMEOUT=2
PING_HOST=8.8.8.8
IS_PING=`ping -c1 -W$PING_TIMEOUT $PING_HOST | grep received | awk '{print $4}'`
echo $IS_PING
# 1

3 Windows Batch

ERRORLEVEL의 값이 0이면 참, 1이면 실패이다.

@echo off
ping -n 1 8.8.8.8 1>nul 2>nul
echo %ERRORLEVEL%
REM 0

4 C#

public bool is_ping(string host) {
	try {
		int timeout = 120;
		Ping pingSender = new Ping();
		PingOptions options = new PingOptions();
		options.DontFragment = true;
		string data = "Ping_ABCDEFGHIJKLMNOP1234567890";
		byte[] buffer = Encoding.ASCII.GetBytes(data);
		PingReply reply = pingSender.Send(host, timeout, buffer, options);
		if (reply.Status == IPStatus.Success) return true;
		return false;
	}
	catch (Exception) {
		return false;
	}
}

5 PHP

• Linux

function is_ping($host, $timeout = 2) {
	return exec("ping -c1 -W$timeout $host | grep received | awk '{print $4}'");
}

6 PowerShell

$pinghost="8.8.8.8"
echo (!(get-wmiobject win32_pingstatus -Filter "Address='$pinghost'").statuscode)
# True

$pinghost="8.8.8.9"
echo (!(get-wmiobject win32_pingstatus -Filter "Address='$pinghost'").statuscode)
# False

Function is_ping([string] $pinghost) {
	return (!(get-wmiobject win32_pingstatus -Filter "Address='$pinghost'").statuscode)
}
$result = is_ping('8.8.8.8')
echo $result
# True
$result = is_ping('8.8.8.9')
echo $result
# False

7 같이 보기

• 함수 is_port_open()
• 함수 is_ipmiping()
• ping