Can I build local http server? [closed]

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I need to build a local fake http server. It will listen all my http request and will decide which packet will be dropped or forward or delayed. Can I do that ? If I can how can I do it ?

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Can I do that ?

Yes

If I can how can I do it ?

First, make a socket server:

http://www.switchonthecode.com/tutorials/csharp-tutorial-simple-threaded-tcp-server

Next, parse HTTP and respond to it (linked in HTTP/1.0 for simplicity):

http://www.ietf.org/rfc/rfc1945.txt

As for "dropped or delayed", a "web server" does not operate at a packet level, you will have to clarify what you need it to do.