Mini server implementation in Objective C

I'm trying to implement a little server service in order to upload files via web browser to my iOS app. An example of this feature is impl开发者_开发知识库emented in the following app:

http://itunes.apple.com/uy/app/files-document-reader/id294150896?mt=8

seems to be very simple, but don't know where to start. I've been also looking for clues or some sample codes about this kind of implementation with no success, but maybe just don't know how to google the problem correctly.

Any clues, guides, links, etc...?

Thanks in advance

Here is a wrapper to embed the moongoose http server in your iphone application. Another simple http server is here. The latter one is the one I used in my application, recently.

EDIT:

There's at least a third one, too.