Solved

Download time

Posted on 2004-08-12
4
282 Views
Last Modified: 2008-03-06
UNGRENT, 500 points given...

Has enybody got script to show file download time. App should recognize somehow visitors connection speed itself.
0
Comment
Question by:Aetia
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 3

Expert Comment

by:thecode101
ID: 11784238
Try this:

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language = "JavaScript">
// Remove down to "ConnectionSpeed Detection section" if you don't want to use cookies
// If you drop a cookie it can be picked up on return by php or something else
function setCookie(name, value, expire ){
document.cookie = name + "=" + escape(value) + ((expire==null ?
"":(";expires=" + expire.toGMTString())));
// alert('A cookie called '+name+' is now set with value: '+value); //enable to alert user of cookie
}
function getExpireDate(){
var expires = new Date();
expires.setTime((new Date().getTime() + 1000*60*60*24*365));
return expires;
}
// ConnectionSpeed Detection section
var datasize=31468; // Size of data being transferred, in Bytes
var startTime=0;
var endTime=0;
var date=0;
var ctype="";
var textMessage="";
function calcThroughput() {
var diffTimeMilliseconds = endTime - startTime;
var diffTimeSeconds = diffTimeMilliseconds/1000;
var bits = (datasize*8);    // convert Bytes to bits,
var kbits = bits/1024;    // convert bits to kbits
var throughput = kbits/(diffTimeSeconds*100/100);
throughput = throughput * .93; // account for IP packet header overhead - averages about 7%
setCookie("MediaThroughput", throughput, getExpireDate()); // Remove to not use cookie
if (throughput < 600){ctype="medium.html";}
if (throughput < 560){ctype="low.html";}
if (throughput > 600){ctype="high.html";}
textMessage = "Bandwidth: <B>" + ctype + "</B><br>time to load: (sec): <B>" + diffTimeSeconds + "</B><BR>kbits loaded:<B> " + kbits + "</B><BR>Throughput (kbps): <B>" + throughput +"</B>"
var sPath = window.location.pathname;
var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);
document.location = sPath + "?speed=" + bits;
}
</script>
</head>

<body>
<?php
if (!$speed)
{
echo "<script language = \"Javascript\">
date = new Date();
endTime=date.getTime();
calcThroughput();
</script>";
}

$size = filesize ("path/to/filename");
$speed = floatval($speed);
$size = floatval($size);
$downloadTime = ceil($size / $speed);
echo $downloadTime;
?>

</body>
</html>

Code borrowed and modified from:
http://www.gidforums.com/t-1285.html
http://twebman.lunarpages.com/js/BandwidthRedirect.htm
0
 
LVL 3

Accepted Solution

by:
thecode101 earned 500 total points
ID: 11794476
The download time is returned in seconds. If you have any more questions or if this does not solve your question let me know.
0
 

Author Comment

by:Aetia
ID: 11795521
Thank you...

I havent tested it... But I will give you your points... :D
0
 

Author Comment

by:Aetia
ID: 11800966
I used your script In my PHP it seems to function.

However the result of the calculation of the downloading time is theoretical and it represents a minimal time (it takes the speed of connection and it doesn't know the speed of the distant server and the different roads that data can follow).
0

Featured Post

Salesforce Made Easy to Use

On-screen guidance at the moment of need enables you & your employees to focus on the core, you can now boost your adoption rates swiftly and simply with one easy tool.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I imagine that there are some, like me, who require a way of getting currency exchange rates for implementation in web project from time to time, so I thought I would share a solution that I have developed for this purpose. It turns out that Yaho…
3 proven steps to speed up Magento powered sites. The article focus is on optimizing time to first byte (TTFB), full page caching and configuring server for optimal performance.
The viewer will learn how to count occurrences of each item in an array.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question