Regular expression for IPV4 address validation

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Hello,

I need a small help in creating a regular expression for IPV4 address validation.
My validation string is as below..

XML

http://IP:PORT/

What I have tried is given below...

C#

private bool IsUrlValid(string url)
 {
   Regex urlRx = new Regex(@"^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]?)/$", RegexOptions.IgnoreCase);
  return urlRx.IsMatch(url);
 }

With this code, I could perfectly validate an IPV4 address without port; But I want to modify this to accept port number also.
Any help on this would be greatly appreciated.
Thanks in advance

Posted 15-Apr-14 19:47pm

Sebastian T Xavier

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Sebastian T Xavier · Accepted Answer · 2014-04-15T20:20:00

Modified the expression as shown below and solved this case...

C#

private bool IsUrlValid(string url)
{
    Regex urlRx = new Regex(@"^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]?):?(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|[1-5]\d{4}|[1-9]\d{0,3})/$", RegexOptions.IgnoreCase);
    return urlRx.IsMatch(url);
}

Thanks
Sebastian