Regular expression for URL Validator

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Hello All,

I have an issue with regular expression. I need to validate for the following url

http://50.244.41.23/ or http://myserver/

I have used following expressions

C#

Regex urlRx = new Regex(@"(http|https)://([0-9]*)", RegexOptions.IgnoreCase);

Regex urlRx = new Regex(@"(http|https)://(\b(?:\d{1,3}\.){3}\d{1,3}\b)", RegexOptions.IgnoreCase);

Both are working up to an extent, But it doesn't serve the exact purpose. It gives success for the following strings, But i want the expression to fail for such strings..

http://50.244.41.23\

http://256.244.41.23/

http://256.244.41.23.123/

Can someone help to create an apt regex validation for the above url.

Thanks
Sebastian

Posted 8-Apr-14 21:01pm

Sebastian T Xavier

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Comments

Peter Leow 9-Apr-14 3:36am

You only want to validate these 2 strings? Any other values?
"http://50.244.41.23/" or "http://myserver/"

Sebastian T Xavier 14-Apr-14 8:22am

I need to validate the port also; How can I modify this expression(the expression in my result) to accept port also?

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 9-Apr-14 3:38am

Why http://256.244.41.23/ OR http://256.244.41.23.123/ are not valid?

What is that Logic?

Sebastian T Xavier 9-Apr-14 6:32am

Both are not valid based on IPV4 standards....

2 solutions

Solution 1

Text this: Verified by me:

HTML

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Regex for urls with or without http Page</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>
<script type="text/javascript">
$(function() {
$('#btnValidate').click(function() {
var txt = $('#txturl').val();
var re = /(http(s)?:\\)?([\w-]+\.)+[\w-]+[.com|.in|.org]+(\[\?%&=]*)?/
if (re.test(txt)) {
alert('Valid URL')
}
else {
alert('Please Enter Valid URL');
return false;
}
})
})
</script>
</head>
<body>
<div>
Enter URL :<input type="text" id="txturl" />
<input type="button" id="btnValidate" value="Validate" />
</div>
</body>
</html>

Posted 8-Apr-14 21:25pm

Er. Puneet Goel

v2

Comments

Sebastian T Xavier 14-Apr-14 8:21am

Please see my solution above; But I need to validate the port also; How can I modify this expression to accept port also?

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Sebastian T Xavier · Accepted Answer · 2014-04-09T00:34:00

Solution 2

Hi All,

I have solved this case by using the following regex expression...

XML

^https?://(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/$

Thanks for support
Sebastian

Posted 9-Apr-14 0:34am

Sebastian T Xavier

v2

Comments

Sebastian T Xavier 14-Apr-14 8:20am

I need to validate the port also; How can I modify this expression to accept port also?