Any plans to port zlib?

I think there are simpler, single-file zlibs that you can just push data into one chunk at a time.

pipe can go both in and out of files as well, but the implementation may not be totally node-compatible - if the target has a write function it'll get called repeatedly with chunks of data. I'm not sure what you're trying because obviously you're piping out of the filesystem right now for your HTTP server.