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ASP.NET (vb.net) custom HTTP headers

Posted on 2010-11-15
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Last Modified: 2012-08-13
Hi All,

The wider picture to this problem is the integration of an ASP.NET application with Google Apps - but that is a way down the line for now.

All I am trying to do at this stage is append the HTTP Header of a page and pass it to another page (which is the basic premise of Google AuthSub for Google Apps).

In the following file: http://www.********.com/header1.aspx I have the following Sub Page_Load:

---------------------------------------

Sub Page_Load(Sender As Object, E As EventArgs)
      
        Response.AppendHeader("Test", "Test")
      
      Response.Redirect("header2.aspx")
      
End Sub

---------------------------------------

The simplest of things that *should* add the header "Test" to the GET Request for "header2.aspx". However, header2.aspx does not output a header value called "Test"!

Header 2 simply has this in the body:

---------------------------------------

<%= Request.ServerVariables("ALL_HTTP") %>

---------------------------------------

This is mad because it's so simple which is kind of why I am lost - there is not much documentation online for such a straightforward issue.

Any help will be massively appreciated.
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Question by:courtthree
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by:sandipshah
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I am not much of an ASP geek, but why don't you use Python / Java?  Everything that you need is already implemented there.

And Google is trying to move everything to OAuth ... if you can, stay away from ClientLogin & AuthSub.

Ss
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by:Alfred1
Alfred1 earned 500 total points
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by:courtthree
Comment Utility
Thanks Alfred,

That does start to point me in the right direction but the solution offered in that link doesn't work directly.

Given the nature of this code block:

---------------------------------------

Sub Page_Load(Sender As Object, E As EventArgs)
     
        Response.AppendHeader("Test", "Test")
        Response.Redirect("header2.aspx")
     
End Sub

---------------------------------------

Can you tell me how the redirect should work?
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Accepted Solution

by:
Alfred1 earned 500 total points
Comment Utility
Have you seen the following link:

http://www.asp101.com/tips/index.asp?id=161


or you could try the following:

Response.AppendHeader("Refresh", "2; URL=header2.aspx");

or you could just put this in your ASP.NET page source:

<head>
<META HTTP-EQUIV="refresh" CONTENT="2;URL=header2.aspx; text/html; charset=us-ascii;">
</head>
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by:courtthree
Comment Utility
Thank you for your continued input but I have no discovered that using the methids described above send the headers as "Response" and Google requires "Request" objects!

I have now written the following which gets me through Google authentication:

---------------------------------------------------

<script runat="server">

Dim t As String

Sub Page_Load(Sender As Object, E As EventArgs)

      t = Request.QueryString("token")
      
      Dim googleRequest = HttpWebRequest.Create("https://www.google.com/accounts/AuthSubSessionToken")
      googleRequest.Method = "GET"
      googleRequest.Headers.Set("Authorization", "AuthSub token=""" & t & """")
      Dim googleResponse = googleRequest.GetResponse()
      
      outputLabel.Text = googleResponse.toString()
      
End Sub

</script>

---------------------------------------------------

The problem I now have is accessing the content of the "googleRequest.GetResponse()" method.

However, I realise that your previous answers were correct for the original question so I think it would only be fair if I accept your answer and post this as a new question. By all means, go and answer the new one!
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