X-Requested-With, AJAX Requests, and Android WebViews

Wed, 11 Mar 2015 18:20:17 +0000

Today we ran into an interesting problem with certain pages of our website not loading for Android users inside their Facebook Apps. We dug down and ran into several red herrings, but ultimately found the problem.

The Problem

If you Google for “X-Requested-With”, or the $_SERVER variable name in PHP HTTP_X_REQUESTED_WITH you will likely find many posts stating that it is a method for detecting AJAX requests. Most major JavaScript libraries and/or frameworks like jQuery will set the X-Requested-With HTTP header for any AJAX requests. So if you Google X-Requested-With or HTTP_X_REQUESTED_WITH you will see blog posts & StackOverflow answers about detecting AJAX requests.

ASP .NET Ajax - Straight forward and simple, the way it should be.

Mon, 11 Feb 2008 16:34:41 +0000

I have to say, I’m very impressed with the implementation of ASP .NET AJAX. After creating several projects in .NET, converting several of my pages to implement AJAX was beyond easy. It was incredible. It takes all the “thinking” out of AJAX and just makes it work. Now, I’m not familiar with the security and stability of it, but for simple AJAX to make your interface just “nicer”, its amazing. I’ll be posting a few tricks and tips that I discover as I play around with the AJAX capabilities of .NET.

AJAX on Justin Carmony

X-Requested-With, AJAX Requests, and Android WebViews

The Problem

ASP .NET Ajax - Straight forward and simple, the way it should be.