custom_redirect.rb

require 'manticore'
require 'awesome_print'

class MyRedirectHandler < org.apache.http.impl.client::DefaultRedirectStrategy
  def getRedirect(request, response, context)
    super.tap do |next_request|
      logRedirect context, response.getStatusLine.getStatusCode, next_request.getURI.to_s
    end
  end

  private

  def logRedirect(context, code, uri)
    redirects = context.getAttribute("redirects")
    if redirects.nil?
      redirects = []
      context.setAttribute("redirects", redirects)
    end
    redirects << [code, uri]
  end
end

client = Manticore::Client.new(cookies: true) do |builder, request_config|
  builder.set_redirect_strategy MyRedirectHandler.new
end

responses = [
  client.async_get("http://mogotest.com"),
  client.async_get("http://google.com"),
  client.async_get("http://www.nytimes.com/2014/02/23/magazine/how-obamacare-could-unlock-job-opportunities.html")
]
client.execute!

redirects = responses.map do |response|
  {
    uri: response.request.getURI.to_s,
    final_uri: response.final_url.to_s,
    redirects: response.context.get_attribute("redirects")
  }
end

ap redirects

results

[
    [0] {
              :uri => "http://mogotest.com",
        :final_uri => "http://mogotest.com/",
        :redirects => nil
    },
    [1] {
              :uri => "http://google.com",
        :final_uri => "http://www.google.com/",
        :redirects => [
            [0] [
                [0] 301,
                [1] "http://www.google.com/"
            ]
        ]
    },
    [2] {
              :uri => "http://www.nytimes.com/2014/02/23/magazine/how-obamacare-could-unlock-job-opportunities.html",
        :final_uri => "http://www.nytimes.com/2014/02/23/magazine/how-obamacare-could-unlock-job-opportunities.html?_r=0",
        :redirects => [
            [0] [
                [0] 303,
                [1] "http://www.nytimes.com/glogin?URI=http%3A%2F%2Fwww.nytimes.com%2F2014%2F02%2F23%2Fmagazine%2Fhow-obamacare-could-unlock-job-opportunities.html%3F_r%3D0"
            ],
            [1] [
                [0] 302,
                [1] "http://www.nytimes.com/2014/02/23/magazine/how-obamacare-could-unlock-job-opportunities.html?_r=0"
            ]
        ]
    }
]