Append an HTTP header to all IE requests

I have a scenario which requires me to append an HTTP header to all outgoing IE-based HTTP communications on a machine. This doesn't need to work outside of IE.

I first attempted to create a simple HTTP proxy in C#, but the performance of this proxy wasn't very good, and there were issues with HTTPS communications.

My second attempt was to use FiddlerCore, which I hoped would have better performance, but was only marginally faster than what I had created myself.

Aside from writing a TCP filter driver to do this (not in my skillset), is there another option? Strictly speaking, this doesn't have to be an HTTP header. It could even be something I tack on to the user agent string.

I was thinking perhaps about creating a simple BHO, but I'm hoping there is an easier solution... one that I can write in C# perhap开发者_Go百科s.

How about just reading the user-agent string in your code and if it's IE then append the HTTP header?

Just use user agent string. It is documented here http://msdn.microsoft.com/en-us/library/ms537503(VS.85).aspx .

Per article following registry key can be used to add to the user agent string: SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Pre Platform\Token = Value.