def call(env)
      req = Rack::Request.new(env)
      resp = Rack::Response.new
      return resp.finish if !req.post?
      resp.write process(req.body.read)
      resp.finish
    end
def call(env)
      req = Rack::Request.new(env)
      resp = Rack::Response.new
      return resp.finish if !req.post?
      resp.write process(req.body.read)
      resp.finish
    end
Entry point for Rack