Write request headers and data to stdout

index.coffee

http = require('http')

###
Usage:
  coffee index.coffee 3000
###
server = http.createServer (req, res) ->
  console.log "\n\nHEADERS:\n", req.headers

  req.on 'data', (data) ->
    try
      json = JSON.parse data.toString()
      body = JSON.stringify json, null, 2
    catch
      body = data.toString()
    console.log "\nDATA:\n", body

  res.writeHead 500, 'Content-Type': 'text/plain'
  res.end('nothing to show')

server.listen process.argv[2] || 3000