Wrox Programmer Forums
General .NET For general discussion of MICROSOFT .NET topics that don't fall within any of the other .NET forum subcategories or .NET language forums.  If your question is specific to a language (C# or Visual Basic) or type of application (Windows Forms or ASP.Net) try an applicable forum category. ** PLEASE BE SPECIFIC WITH YOUR QUESTION ** When posting here, provide details regarding the Microsoft .NET language you are using and/or what type of application (Windows/Web Forms, etc) you are working in, if applicable to the question. This will help others answer the question without having to ask.
Welcome to the p2p.wrox.com Forums.

You are currently viewing the General .NET section of the Wrox Programmer to Programmer discussions. This is a community of software programmers and website developers including Wrox book authors and readers. New member registration was closed in 2019. New posts were shut off and the site was archived into this static format as of October 1, 2020. If you require technical support for a Wrox book please contact http://hub.wiley.com
Old April 20th, 2004, 11:38 AM
Registered User
Join Date: Apr 2004
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Default Referrer and Uri

I just want to confirm that the request coming in to my page is from a certain IP.

If I try this:

Dim foo as String = Request.UrlReferrer.ToString
If Not foo.Equals("999.888.777.666") Then
  ' go to some error page
  Response.Redirect("/foo/bar/noauth.aspx?ErrMsg=" & foo)
  ' or
  ' Responst.Redirect("/foo/bar/noauth.html")
  ' do the rest of my stuff.....

I get a null ref exception, but I can't set the uri to a "new",
why do i have none?

There has to be an easier way than this Uri b.s.


Old April 20th, 2004, 12:54 PM
planoie's Avatar
Friend of Wrox
Join Date: Aug 2003
Posts: 5,407
Thanks: 0
Thanked 16 Times in 16 Posts

The "Uri b.s." that you refer to has nothing to do with your problem. According to the .net documentation UrlReferrer "Gets information about the URL of the client's previous request that linked to the current URL." This is not what you want. It's coming up null most likely because you are typing in the test url directly and thus no referrer is being sent to the server.

What you DO want to look at it is UserHostAddress which "Gets the IP host address of the remote client".

Work smarter, not harder

Similar Threads
Thread Thread Starter Forum Replies Last Post
list unparsed-entity-uri() bonekrusher XSLT 6 April 28th, 2008 10:52 AM
chapter 2, error uri cannot be resolved in either boylevel BOOK: Beginning JavaServer Pages 2 November 21st, 2007 12:54 PM
How do I get only the filename of the reffered URI shekhar_249 General .NET 1 August 25th, 2006 06:40 AM

Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright (c) 2020 John Wiley & Sons, Inc.