JavaScript模拟的HTTP Ping 效果

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引入JS
- 3.0.0 2.2.0 2.1.4 2.1.3 2.1.2 2.1.1 2.1.0 2.0.3 2.0.2 2.0.1 2.0.0 1.12.0 1.11.3 1.11.2 1.11.1 1.11.0 1.10.2 1.10.1 1.10.0 1.9.1 1.9.0 1.8.3 1.8.2 1.8.1 1.8.0 1.7.2 1.7.1 1.7 1.6.4 1.6.2 1.6.1 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0
- 1.7.3 1.7.2 1.7.1.0 1.7.0.0
- 2.0.0-beta.0 2.0.0-alpha.55 1.5.0-rc.0 1.4.8 1.4.0 1.3.20 1.2.29 1.1.5 1.0.8
- 1.8.3 1.7.0 1.6.0 1.5.2 1.4.4 1.3.3 1.2.4 1.1.7
- 1.10.4 1.9.7 1.8.10 1.7.8 1.6.3 1.5.4 1.4.6 1.3.3
- core1.6.0 core-compat1.6.0 core1.5.2 core-compat1.5.2 core-full-compat-yc1.4.5 core-full-compat1.4.5 core-full-nocompat-yc1.4.5 core-full-nocompat1.4.5
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- 3.7.3 3.7.2 3.7.1 3.7.0 3.7 3.6.2 3.6.1 3.6

引入框架
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- 1.11.4 1.11.3 1.11.2 1.11.1 1.11.0 1.10.4 1.10.3 1.10.2
- 3.3.6 3.3.5 3.3.0 3.2.0 2.3.2

汉王

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>HTTP Ping - www.shouce.ren</title> 
<style> 
html 
{ 
height: 100%; 
overflow: hidden; 
} 
body 
{ 
background: #000; 
color: #C0C0C0; 
font-weight: bold; 
font-size: 14px; 
font-family: Lucida Console; 
height: 100%; 
margin: 0 0 0 5px; 
} 
#divContent 
{ 
height: 90%; 
overflow: auto; 
} 
#txtTimeout 
{ 
width: 40px; 
} 
button 
{ 
margin-left: 10px; 
} 
</style> 
</head> 
<body> 
<div id="divInput"> 
<span>URL:</span> 
<input id="txtURL" type="text" /> 
<span>Timeout:</span> 
<input id="txtTimeout" type="text" value="2000" /> 
<input id="btnSwitch" type="button" value="Start" onclick="handleBtnClick()" /> 
<hr/> 
</div> 
<div id="divContent"></div> 
<script> 
var intStartTime; 
var objIMG = new Image(); 
objIMG.onload = 
objIMG.onerror = 
function() 
{ 
/* 
* 有回应,取消超时计时 
*/ 
clearTimeout(intTimerID); 
if(!bolIsRunning || bolIsTimeout) 
return; 
var delay = new Date() - intStartTime; 
println("Reply from " + 
strURL + 
" time" + 
((delay<1)?("<1"):("="+delay)) + 
"ms"); 
arrDelays.push(delay); 
/* 
* 每次请求间隔限制在1秒以上 
*/ 
setTimeout(ping, delay<1000?(1000-delay):1000); 
} 
function ping() 
{ 
/* 
* 发送请求 
*/ 
intStartTime = +new Date(); 
intSent++; 
objIMG.src = strURL + "/" + intStartTime; 
bolIsTimeout = false; 
/* 
* 超时计时 
*/ 
intTimerID = setTimeout(timeout, intTimeout); 
} 
function timeout() 
{ 
if(!bolIsRunning) 
return; 
bolIsTimeout = true; 
objIMG.src = "X:\\"; 
println("Request timed out."); 
ping(); 
} 
</script> 
<script> 
var $ = function(v){return document.getElementById(v)}; 
var arrDelays = []; 
var intSent; 
var bolIsRunning = false; 
var bolIsTimeout; 
var strURL; 
var intTimeout; 
var intTimerID; 
var objBtn = $("btnSwitch"); 
var objContent = $("divContent"); 
var objTxtURL = $("txtURL"); 
objTxtURL.value = window.location.host; 
function handleBtnClick() 
{ 
if(bolIsRunning) 
{ 
/* 
* 停止 
*/ 
var intRecv = arrDelays.length; 
var intLost = intSent-intRecv; 
var sum = 0; 
for(var i=0; i<intRecv; i++) 
sum += arrDelays[i]; 
objBtn.value = "Start"; 
bolIsRunning = false; 
/* 
* 统计结果 
*/ 
println("　"); 
println("Ping statistics for " + strURL + ":"); 
println("　　Packets: Sent = " + 
intSent + 
", Received = " + 
intRecv + 
", Lost = " + 
intLost + 
" (" + 
Math.floor(intLost / intSent * 100) + 
"% loss),"); 
if(intRecv == 0) 
return; 
println("Approximate round trip times in milli-seconds:"); 
println("　　Minimum = " + 
Math.min.apply(this, arrDelays) + 
"ms, Maximum = " + 
Math.max.apply(this, arrDelays) + 
"ms, Average = " + 
Math.floor(sum/intRecv) + 
"ms"); 
} 
else 
{ 
/* 
* 开始 
*/ 
strURL = objTxtURL.value; 
if(strURL.length == 0) 
return; 
if(strURL.substring(0,7).toLowerCase() != "http://") 
strURL = "http://" + strURL; 
intTimeout = parseInt($("txtTimeout").value, 10); 
if(isNaN(intTimeout)) 
intTimeout = 2000; 
if(intTimeout < 1000) 
intTimeout = 1000; 
objBtn.value = "Stop "; 
bolIsRunning = true; 
arrDelays = []; 
intSent = 0; 
cls(); 
println("Pinging " + strURL + ":"); 
println("　"); 
ping(); 
} 
} 
function println(str) 
{ 
var objDIV = document.createElement("div"); 
if(objDIV.innerText != null) 
objDIV.innerText = str; 
else 
objDIV.textContent = str; 
objContent.appendChild(objDIV); 
objContent.scrollTop = objContent.scrollHeight; 
} 
function cls() 
{ 
objContent.innerHTML = ""; 
} 
</script> 
</body> 
</html>

AخA
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>HTTP Ping - www.shouce.ren</title> 
<style> 
html 
{ 
height: 100%; 
overflow: hidden; 
} 
body 
{ 
background: #000; 
color: #C0C0C0; 

CSS代码

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CSS代码...​x
 
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JS代码

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JS代码...xxxxxxxxxx
 
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名称

JavaScript模拟的HTTP Ping 效果

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描述

JS虽然不能真正发送Ping的ICMP数据包，但Ping的本质仍然是请求/回复的时间差,HTTP自然可以实现此功能，不过在请求时无法统计HTTP头部的长度，所以当请求数据包长度在最大传输单元临界点时，额外的HTTP头可以导致IP分组，因此存在一定的误...