Intercept HTTP requests

I've some fishy application that makes HTTP requests to a website, i would like to intersect that request and send other data to the server. Is t开发者_开发技巧hat possible in C#,java or C++?

EDIT: The application isn't mine, i just know the endpoint that it sends http requests

Fiddler might provide the functionality you need. At the very least it may enable you to see what is being sent to the web site.

in Java You can intercept request from Filter

You may want to look into using an HttpModule, whose purpose is to intercept incoming HTTP requests.

The ASP Column: HTTP Modules

Firstly are you aware of how it is connecting to the internet? For example, is it using the settings from Internet Explorer, or is it establishing a direct connection? If the latter, this may be tricky, there is no direct port forwarding as there in Linux, so you'll need some third-party tools to redirect the traffic to a server (which you can write in Java, C++ or C#, I would go for C# if you know it for pure speed of development) In that server you can intercept the request, and then create your own to actually send to the real destination.

Sounds like a cludge, but I think you're stuck with this approach due to the lack of direct port forwarding. You'll have to configure the third-party tool that you use to forward someother well known port to 80, and your server should write to this.