Introduction
This little tip is about how to enable "Frame Redirection" when using Azure App Services. You can obtain more information about what redirection is by clicking here.
The Problem
I came across this problem when I registered a new domain. I wanted to redirect that domain using "Frame Redirection" to return my personal site in Azure. So, the redirection wasn't working because Azure adds by default (or at least I think so) an "X-FRAME-OPTIONS" header with a "SAMEORIGIN" value. This means that, by default, "Frame redirection" is not allowed.
The Solution
To solve the problem, you just need to add this little piece of code to your Global.asax file:
private void Application_EndRequest(object sender, EventArgs e)
{
Response.Headers["X-FRAME-OPTIONS"] = "ALLOW-FROM url1,url2;
}
As you can see above, "X-FRAME-OPTIONS" header is replaced with the keyword "ALLOW-FROM" and the list of authorized urls delimited by commas. By doing this, I solved the problem and the redirection is working properly now.
