A simple goliath API that returns the sha1 hash of an uploaded file.

sha_stream.rb

#!/usr/bin/env ruby
# encoding: utf-8

require 'goliath'
require 'digest/sha1'

class ShaStream < Goliath::API
  def on_headers(env, headers)
    env['async-digest'] = Digest::SHA1.new # SHA1 or MD5
    str = env['CONTENT_TYPE'].match(/multipart\/form-data.*boundary\=?([^"\;,]+)?/)
    env['request-boundary'] = str[1] if str
  end

  def on_body(env, data)
    data.gsub!(/.*#{env['request-boundary']}.*\r\n\r\n/m, '')
    data.gsub!(/\r\n.*#{env['request-boundary']}--\r\n/m, '')
    env['async-digest'] << data
  end

  def response(env)
    [200, {}, ["works #{env['async-digest'].hexdigest}\n"]]
  end
end

# run with ruby sha_stream.rb -sv -p 9000
# call with curl -F "file=@goliath/github.rb" "localhost:9000/"