Rack server that prints out any requests

config.ru

# Run as follows:
#
#   rackup -o 0.0.0.0 -O Threads=0:1
#

require 'json'
require 'pp'

run (Proc.new do |env|
  req = Rack::Request.new(env)
  puts "====================="
  puts "#{req.request_method} #{req.path}"
  unless req.GET.empty?
    puts "--- query"
    pp req.GET
  end
  if req.content_length.to_i > 0
    puts "--- POST #{req.content_type}"
    if req.content_type['json']
      pp JSON.parse(req.body.read)
    elsif req.POST?
      pp req.POST
    else
      puts req.body.read
    end
  end
  [
    200,
    { 'Content-Type' => 'text/plain' },
    [ '' ],
  ]
end)