Question

How make sure always HTTPS for a page?

Asked by: RobertNZana

I have a payment page for my website.  How can I make sure (with VB.NET) that the page is always utilizing the SSL cert (HTTPS)?  If they come in with HTTP, should I just redirect to HTTPS?  Any code samples would be nice.  Thanks.

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Asked On
2009-03-12 at 11:44:49ID24225151
Tags

asp.net

,

ssl

Topics

Programming for ASP.NET

,

Miscellaneous Web Development

,

Microsoft Visual Basic.Net

Participating Experts
2
Points
500
Comments
7

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Answers

 

by: jjardinePosted on 2009-03-12 at 11:47:09ID: 23872045

you can use the server variables to look at the referring url to validate if it is using ssl by checking for https.   You could redirect them, but is that just for entering the site or for submiting the data?  if they submit to http, it is already to late to redirect as the data is already there.  

 

by: RobertNZanaPosted on 2009-03-12 at 12:10:39ID: 23872304

So on the page_load check if the "https" is there and if not do a redirect to the same page but append "https" to the front?

 

by: jjardinePosted on 2009-03-12 at 13:08:06ID: 23872899

yeah.. you could do that.   Do you have the ability to write http modules on your server?   If so, you could check it at that point.    I am guessing you are just going to do this on the first page of the site?  the login page maybe?

 

by: RobertNZanaPosted on 2009-03-12 at 13:21:54ID: 23873069

After some research I wrote the below code.  It seems to work well.  See any holes with it?

If Not Request.IsSecureConnection Or Request.Url.ToString.Contains("https://") Then
     ' redirect to https
     Dim strNewUrl As String
     strNewUrl = Request.Url.ToString.Replace("http://", "https://")
     Response.Redirect(strNewUrl)
End If

                                              
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by: jjardinePosted on 2009-03-12 at 14:12:51ID: 23873616

what bout this:
If Not Request.IsSecureConnection Or Not Request.Url.ToString.StartsWith("https://") Then
     ' redirect to https
     Dim strNewUrl As String
     strNewUrl = Request.Url.ToString.Replace("http://", "https://")
     Response.Redirect(strNewUrl)
End If


I added a Not for the second check as it was going to do it if it found https.   I also changed to starts with instead of contains.  

 

by: NiexxamPosted on 2009-10-21 at 01:28:27ID: 25621693

where to put those code...please tell me...

 

by: RobertNZanaPosted on 2009-10-21 at 01:35:23ID: 25621733

form_load of a page, such as checkhttps.aspx

20120131-EE-VQP-002

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