# $Id$

require 'test/unit'
require 'net/http'
require 'stringio'
require_relative 'utils'

class TestNetHTTP < Test::Unit::TestCase

  def test_class_Proxy
    no_proxy_class = Net::HTTP.Proxy nil

    assert_equal Net::HTTP, no_proxy_class

    proxy_class = Net::HTTP.Proxy 'proxy.example', 8000, 'user', 'pass'

    refute_equal Net::HTTP, proxy_class

    assert_operator proxy_class, :<, Net::HTTP

    assert_equal 'proxy.example', proxy_class.proxy_address
    assert_equal 8000,            proxy_class.proxy_port
    assert_equal 'user',          proxy_class.proxy_user
    assert_equal 'pass',          proxy_class.proxy_pass

    http = proxy_class.new 'example'

    refute http.proxy_from_env?


    proxy_class = Net::HTTP.Proxy 'proxy.example'
    assert_equal 'proxy.example', proxy_class.proxy_address
    assert_equal 80,              proxy_class.proxy_port
  end

  def test_class_Proxy_from_ENV
    clean_http_proxy_env do
      ENV['http_proxy']      = 'http://proxy.example:8000'

      # These are ignored on purpose.  See Bug 4388 and Feature 6546
      ENV['http_proxy_user'] = 'user'
      ENV['http_proxy_pass'] = 'pass'

      proxy_class = Net::HTTP.Proxy :ENV

      refute_equal Net::HTTP, proxy_class

      assert_operator proxy_class, :<, Net::HTTP

      assert_nil proxy_class.proxy_address
      assert_nil proxy_class.proxy_user
      assert_nil proxy_class.proxy_pass

      refute_equal 8000, proxy_class.proxy_port

      http = proxy_class.new 'example'

      assert http.proxy_from_env?
    end
  end

  def test_edit_path
    http = Net::HTTP.new 'example', nil, nil

    edited = http.send :edit_path, '/path'

    assert_equal '/path', edited

    http.use_ssl = true

    edited = http.send :edit_path, '/path'

    assert_equal '/path', edited
  end

  def test_edit_path_proxy
    http = Net::HTTP.new 'example', nil, 'proxy.example'

    edited = http.send :edit_path, '/path'

    assert_equal 'http://example/path', edited

    http.use_ssl = true

    edited = http.send :edit_path, '/path'

    assert_equal '/path', edited
  end

  def test_proxy_address
    http = Net::HTTP.new 'example', nil, 'proxy.example'
    assert_equal 'proxy.example', http.proxy_address

    http = Net::HTTP.new 'example', nil
    assert_equal nil, http.proxy_address
  end

  def test_proxy_address_ENV
    clean_http_proxy_env do
      ENV['http_proxy'] = 'http://proxy.example:8000'

      http = Net::HTTP.new 'example'

      assert_equal 'proxy.example', http.proxy_address
    end
  end

  def test_proxy_eh_no_proxy
    clean_http_proxy_env do
      assert_equal false, Net::HTTP.new('example', nil, nil).proxy?
    end
  end

  def test_proxy_eh_ENV
    clean_http_proxy_env do
      ENV['http_proxy'] = 'http://proxy.example:8000'

      http = Net::HTTP.new 'example'

      assert_equal true, http.proxy?
    end
  end

  def test_proxy_eh_ENV_none_set
    clean_http_proxy_env do
      assert_equal false, Net::HTTP.new('example').proxy?
    end
  end

  def test_proxy_eh_ENV_no_proxy
    clean_http_proxy_env do
      ENV['http_proxy'] = 'http://proxy.example:8000'
      ENV['no_proxy']   = 'example'

      assert_equal false, Net::HTTP.new('example').proxy?
    end
  end

  def test_proxy_port
    http = Net::HTTP.new 'exmaple', nil, 'proxy.example'
    assert_equal 'proxy.example', http.proxy_address
    assert_equal 80, http.proxy_port
    http = Net::HTTP.new 'exmaple', nil, 'proxy.example', 8000
    assert_equal 8000, http.proxy_port
    http = Net::HTTP.new 'exmaple', nil
    assert_equal nil, http.proxy_port
  end

  def test_proxy_port_ENV
    clean_http_proxy_env do
      ENV['http_proxy'] = 'http://proxy.example:8000'

      http = Net::HTTP.new 'example'

      assert_equal 8000, http.proxy_port
    end
  end

  def test_newobj
    clean_http_proxy_env do
      ENV['http_proxy'] = 'http://proxy.example:8000'

      http = Net::HTTP.newobj 'example'

      assert_equal false, http.proxy?
    end
  end

  def clean_http_proxy_env
    orig = {
      'http_proxy'      => ENV['http_proxy'],
      'http_proxy_user' => ENV['http_proxy_user'],
      'http_proxy_pass' => ENV['http_proxy_pass'],
      'no_proxy'        => ENV['no_proxy'],
    }

    orig.each_key do |key|
      ENV.delete key
    end

    yield
  ensure
    orig.each do |key, value|
      ENV[key] = value
    end
  end

end

module TestNetHTTP_version_1_1_methods

  def test_s_get
    assert_equal $test_net_http_data,
        Net::HTTP.get(config('host'), '/', config('port'))
  end

  def test_head
    start {|http|
      res = http.head('/')
      assert_kind_of Net::HTTPResponse, res
      assert_equal $test_net_http_data_type, res['Content-Type']
      unless self.is_a?(TestNetHTTP_v1_2_chunked)
        assert_equal $test_net_http_data.size, res['Content-Length'].to_i
      end
    }
  end

  def test_get
    start {|http|
      _test_get__get http
      _test_get__iter http
      _test_get__chunked http
    }
  end

  def _test_get__get(http)
    res = http.get('/')
    assert_kind_of Net::HTTPResponse, res
    assert_kind_of String, res.body
    unless self.is_a?(TestNetHTTP_v1_2_chunked)
      assert_not_nil res['content-length']
      assert_equal $test_net_http_data.size, res['content-length'].to_i
    end
    assert_equal $test_net_http_data_type, res['Content-Type']
    assert_equal $test_net_http_data.size, res.body.size
    assert_equal $test_net_http_data, res.body

    assert_nothing_raised {
      http.get('/', { 'User-Agent' => 'test' }.freeze)
    }
  end

  def _test_get__iter(http)
    buf = ''
    res = http.get('/') {|s| buf << s }
    assert_kind_of Net::HTTPResponse, res
    # assert_kind_of String, res.body
    unless self.is_a?(TestNetHTTP_v1_2_chunked)
      assert_not_nil res['content-length']
      assert_equal $test_net_http_data.size, res['content-length'].to_i
    end
    assert_equal $test_net_http_data_type, res['Content-Type']
    assert_equal $test_net_http_data.size, buf.size
    assert_equal $test_net_http_data, buf
    # assert_equal $test_net_http_data.size, res.body.size
    # assert_equal $test_net_http_data, res.body
  end

  def _test_get__chunked(http)
    buf = ''
    res = http.get('/') {|s| buf << s }
    assert_kind_of Net::HTTPResponse, res
    # assert_kind_of String, res.body
    unless self.is_a?(TestNetHTTP_v1_2_chunked)
      assert_not_nil res['content-length']
      assert_equal $test_net_http_data.size, res['content-length'].to_i
    end
    assert_equal $test_net_http_data_type, res['Content-Type']
    assert_equal $test_net_http_data.size, buf.size
    assert_equal $test_net_http_data, buf
    # assert_equal $test_net_http_data.size, res.body.size
    # assert_equal $test_net_http_data, res.body
  end

  def test_get__break
    i = 0
    start {|http|
      http.get('/') do |str|
        i += 1
        break
      end
    }
    assert_equal 1, i
  end

  def test_get__implicit_start
    res = new().get('/')
    assert_kind_of Net::HTTPResponse, res
    assert_kind_of String, res.body
    unless self.is_a?(TestNetHTTP_v1_2_chunked)
      assert_not_nil res['content-length']
    end
    assert_equal $test_net_http_data_type, res['Content-Type']
    assert_equal $test_net_http_data.size, res.body.size
    assert_equal $test_net_http_data, res.body
  end

  def test_get2
    start {|http|
      http.get2('/') {|res|
        assert_kind_of Net::HTTPResponse, res
        assert_kind_of Net::HTTPResponse, res.header
        unless self.is_a?(TestNetHTTP_v1_2_chunked)
          assert_not_nil res['content-length']
        end
        assert_equal $test_net_http_data_type, res['Content-Type']
        assert_kind_of String, res.body
        assert_kind_of String, res.entity
        assert_equal $test_net_http_data.size, res.body.size
        assert_equal $test_net_http_data, res.body
        assert_equal $test_net_http_data, res.entity
      }
    }
  end

  def test_post
    start {|http|
      _test_post__base http
      _test_post__file http
    }
  end

  def _test_post__base(http)
    uheader = {}
    uheader['Accept'] = 'application/octet-stream'
    uheader['Content-Type'] = 'application/x-www-form-urlencoded'
    data = 'post data'
    res = http.post('/', data, uheader)
    assert_kind_of Net::HTTPResponse, res
    assert_kind_of String, res.body
    assert_equal data, res.body
    assert_equal data, res.entity
  end

  def _test_post__file(http)
    data = 'post data'
    f = StringIO.new
    http.post('/', data, {'content-type' => 'application/x-www-form-urlencoded'}, f)
    assert_equal data, f.string
  end

  def test_s_post_form
    url = "http://#{config('host')}:#{config('port')}/"
    res = Net::HTTP.post_form(
              URI.parse(url),
              "a" => "x")
    assert_equal ["a=x"], res.body.split(/[;&]/).sort

    res = Net::HTTP.post_form(
              URI.parse(url),
              "a" => "x",
              "b" => "y")
    assert_equal ["a=x", "b=y"], res.body.split(/[;&]/).sort

    res = Net::HTTP.post_form(
              URI.parse(url),
              "a" => ["x1", "x2"],
              "b" => "y")
    assert_equal url, res['X-request-uri']
    assert_equal ["a=x1", "a=x2", "b=y"], res.body.split(/[;&]/).sort

    res = Net::HTTP.post_form(
              URI.parse(url + '?a=x'),
              "b" => "y")
    assert_equal url + '?a=x', res['X-request-uri']
    assert_equal ["b=y"], res.body.split(/[;&]/).sort
  end

  def test_patch
    start {|http|
      _test_patch__base http
    }
  end

  def _test_patch__base(http)
    uheader = {}
    uheader['Accept'] = 'application/octet-stream'
    uheader['Content-Type'] = 'application/x-www-form-urlencoded'
    data = 'patch data'
    res = http.patch('/', data, uheader)
    assert_kind_of Net::HTTPResponse, res
    assert_kind_of String, res.body
    assert_equal data, res.body
    assert_equal data, res.entity
  end

  def test_timeout_during_HTTP_session
    bug4246 = "expected the HTTP session to have timed out but have not. c.f. [ruby-core:34203]"

    # listen for connections... but deliberately do not read
    TCPServer.open('localhost', 0) {|server|
      port = server.addr[1]

      conn = Net::HTTP.new('localhost', port)
      conn.read_timeout = 0.01
      conn.open_timeout = 0.01

      th = Thread.new do
        assert_raise(Net::ReadTimeout) {
          conn.get('/')
        }
      end
      assert th.join(10), bug4246
    }
  end
end


module TestNetHTTP_version_1_2_methods

  def test_request
    start {|http|
      _test_request__GET http
      _test_request__file http
      # _test_request__range http   # WEBrick does not support Range: header.
      _test_request__HEAD http
      _test_request__POST http
      _test_request__stream_body http
    }
  end

  def _test_request__GET(http)
    req = Net::HTTP::Get.new('/')
    http.request(req) {|res|
      assert_kind_of Net::HTTPResponse, res
      assert_kind_of String, res.body
      unless self.is_a?(TestNetHTTP_v1_2_chunked)
        assert_not_nil res['content-length']
        assert_equal $test_net_http_data.size, res['content-length'].to_i
      end
      assert_equal $test_net_http_data.size, res.body.size
      assert_equal $test_net_http_data, res.body
    }
  end

  def _test_request__file(http)
    req = Net::HTTP::Get.new('/')
    http.request(req) {|res|
      assert_kind_of Net::HTTPResponse, res
      unless self.is_a?(TestNetHTTP_v1_2_chunked)
        assert_not_nil res['content-length']
        assert_equal $test_net_http_data.size, res['content-length'].to_i
      end
      f = StringIO.new("".force_encoding("ASCII-8BIT"))
      res.read_body f
      assert_equal $test_net_http_data.bytesize, f.string.bytesize
      assert_equal $test_net_http_data.encoding, f.string.encoding
      assert_equal $test_net_http_data, f.string
    }
  end

  def _test_request__range(http)
    req = Net::HTTP::Get.new('/')
    req['range'] = 'bytes=0-5'
    assert_equal $test_net_http_data[0,6], http.request(req).body
  end

  def _test_request__HEAD(http)
    req = Net::HTTP::Head.new('/')
    http.request(req) {|res|
      assert_kind_of Net::HTTPResponse, res
      unless self.is_a?(TestNetHTTP_v1_2_chunked)
        assert_not_nil res['content-length']
        assert_equal $test_net_http_data.size, res['content-length'].to_i
      end
      assert_nil res.body
    }
  end

  def _test_request__POST(http)
    data = 'post data'
    req = Net::HTTP::Post.new('/')
    req['Accept'] = $test_net_http_data_type
    req['Content-Type'] = 'application/x-www-form-urlencoded'
    http.request(req, data) {|res|
      assert_kind_of Net::HTTPResponse, res
      unless self.is_a?(TestNetHTTP_v1_2_chunked)
        assert_equal data.size, res['content-length'].to_i
      end
      assert_kind_of String, res.body
      assert_equal data, res.body
    }
  end

  def _test_request__stream_body(http)
    req = Net::HTTP::Post.new('/')
    data = $test_net_http_data
    req.content_length = data.size
    req['Content-Type'] = 'application/x-www-form-urlencoded'
    req.body_stream = StringIO.new(data)
    res = http.request(req)
    assert_kind_of Net::HTTPResponse, res
    assert_kind_of String, res.body
    assert_equal data.size, res.body.size
    assert_equal data, res.body
  end

  def test_send_request
    start {|http|
      _test_send_request__GET http
      _test_send_request__POST http
    }
  end

  def _test_send_request__GET(http)
    res = http.send_request('GET', '/')
    assert_kind_of Net::HTTPResponse, res
    unless self.is_a?(TestNetHTTP_v1_2_chunked)
      assert_equal $test_net_http_data.size, res['content-length'].to_i
    end
    assert_kind_of String, res.body
    assert_equal $test_net_http_data, res.body
  end

  def _test_send_request__POST(http)
    data = 'aaabbb cc ddddddddddd lkjoiu4j3qlkuoa'
    res = http.send_request('POST', '/', data, 'content-type' => 'application/x-www-form-urlencoded')
    assert_kind_of Net::HTTPResponse, res
    assert_kind_of String, res.body
    assert_equal data.size, res.body.size
    assert_equal data, res.body
  end

  def test_set_form
    require 'tempfile'
    file = Tempfile.new('ruby-test')
    file << "\u{30c7}\u{30fc}\u{30bf}"
    data = [
      ['name', 'Gonbei Nanashi'],
      ['name', "\u{540d}\u{7121}\u{3057}\u{306e}\u{6a29}\u{5175}\u{885b}"],
      ['s"i\o', StringIO.new("\u{3042 3044 4e9c 925b}")],
      ["file", file, filename: "ruby-test"]
    ]
    expected = <<"__EOM__".gsub(/\n/, "\r\n")
--<boundary>
Content-Disposition: form-data; name="name"

Gonbei Nanashi
--<boundary>
Content-Disposition: form-data; name="name"

\xE5\x90\x8D\xE7\x84\xA1\xE3\x81\x97\xE3\x81\xAE\xE6\xA8\xA9\xE5\x85\xB5\xE8\xA1\x9B
--<boundary>
Content-Disposition: form-data; name="s\\"i\\\\o"

\xE3\x81\x82\xE3\x81\x84\xE4\xBA\x9C\xE9\x89\x9B
--<boundary>
Content-Disposition: form-data; name="file"; filename="ruby-test"
Content-Type: application/octet-stream

\xE3\x83\x87\xE3\x83\xBC\xE3\x82\xBF
--<boundary>--
__EOM__
    start {|http|
      _test_set_form_urlencoded(http, data.reject{|k,v|!v.is_a?(String)})
      _test_set_form_multipart(http, false, data, expected)
      _test_set_form_multipart(http, true, data, expected)
    }
  ensure
    file.close! if file
  end

  def _test_set_form_urlencoded(http, data)
    req = Net::HTTP::Post.new('/')
    req.set_form(data)
    res = http.request req
    assert_equal "name=Gonbei+Nanashi&name=%E5%90%8D%E7%84%A1%E3%81%97%E3%81%AE%E6%A8%A9%E5%85%B5%E8%A1%9B", res.body
  end

  def _test_set_form_multipart(http, chunked_p, data, expected)
    data.each{|k,v|v.rewind rescue nil}
    req = Net::HTTP::Post.new('/')
    req.set_form(data, 'multipart/form-data')
    req['Transfer-Encoding'] = 'chunked' if chunked_p
    res = http.request req
    body = res.body
    assert_match(/\A--(?<boundary>\S+)/, body)
    /\A--(?<boundary>\S+)/ =~ body
    expected = expected.gsub(/<boundary>/, boundary)
    assert_equal(expected, body)
  end

  def test_set_form_with_file
    require 'tempfile'
    file = Tempfile.new('ruby-test')
    file.binmode
    file << $test_net_http_data
    filename = File.basename(file.to_path)
    data = [['file', file]]
    expected = <<"__EOM__".gsub(/\n/, "\r\n")
--<boundary>
Content-Disposition: form-data; name="file"; filename="<filename>"
Content-Type: application/octet-stream

<data>
--<boundary>--
__EOM__
    expected.sub!(/<filename>/, filename)
    expected.sub!(/<data>/, $test_net_http_data)
    start {|http|
      data.each{|k,v|v.rewind rescue nil}
      req = Net::HTTP::Post.new('/')
      req.set_form(data, 'multipart/form-data')
      res = http.request req
      body = res.body
      header, _ = body.split(/\r\n\r\n/, 2)
      assert_match(/\A--(?<boundary>\S+)/, body)
      /\A--(?<boundary>\S+)/ =~ body
      expected = expected.gsub(/<boundary>/, boundary)
      assert_match(/^--(?<boundary>\S+)\r\n/, header)
      assert_match(
        /^Content-Disposition: form-data; name="file"; filename="#{filename}"\r\n/,
        header)
      assert_equal(expected, body)

      data.each{|k,v|v.rewind rescue nil}
      req['Transfer-Encoding'] = 'chunked'
      res = http.request req
      #assert_equal(expected, res.body)
    }
  ensure
    file.close! if file
  end
end

class TestNetHTTP_v1_2 < Test::Unit::TestCase
  CONFIG = {
    'host' => '127.0.0.1',
    'port' => 0,
    'proxy_host' => nil,
    'proxy_port' => nil,
  }

  include TestNetHTTPUtils
  include TestNetHTTP_version_1_1_methods
  include TestNetHTTP_version_1_2_methods

  def new
    Net::HTTP.version_1_2
    super
  end
end

class TestNetHTTP_v1_2_chunked < Test::Unit::TestCase
  CONFIG = {
    'host' => '127.0.0.1',
    'port' => 0,
    'proxy_host' => nil,
    'proxy_port' => nil,
    'chunked' => true,
  }

  include TestNetHTTPUtils
  include TestNetHTTP_version_1_1_methods
  include TestNetHTTP_version_1_2_methods

  def new
    Net::HTTP.version_1_2
    super
  end

  def test_chunked_break
    assert_nothing_raised("[ruby-core:29229]") {
      start {|http|
        http.request_get('/') {|res|
          res.read_body {|chunk|
            break
          }
        }
      }
    }
  end
end

class TestNetHTTPContinue < Test::Unit::TestCase
  CONFIG = {
    'host' => '127.0.0.1',
    'port' => 0,
    'proxy_host' => nil,
    'proxy_port' => nil,
    'chunked' => true,
  }

  include TestNetHTTPUtils

  def logfile
    @debug = StringIO.new('')
  end

  def mount_proc(&block)
    @server.mount('/continue', WEBrick::HTTPServlet::ProcHandler.new(block.to_proc))
  end

  def test_expect_continue
    mount_proc {|req, res|
      req.continue
      res.body = req.query['body']
    }
    start {|http|
      uheader = {'content-type' => 'application/x-www-form-urlencoded', 'expect' => '100-continue'}
      http.continue_timeout = 0.2
      http.request_post('/continue', 'body=BODY', uheader) {|res|
        assert_equal('BODY', res.read_body)
      }
    }
    assert_match(/Expect: 100-continue/, @debug.string)
    assert_match(/HTTP\/1.1 100 continue/, @debug.string)
  end

  def test_expect_continue_timeout
    mount_proc {|req, res|
      sleep 0.2
      req.continue # just ignored because it's '100'
      res.body = req.query['body']
    }
    start {|http|
      uheader = {'content-type' => 'application/x-www-form-urlencoded', 'expect' => '100-continue'}
      http.continue_timeout = 0
      http.request_post('/continue', 'body=BODY', uheader) {|res|
        assert_equal('BODY', res.read_body)
      }
    }
    assert_match(/Expect: 100-continue/, @debug.string)
    assert_match(/HTTP\/1.1 100 continue/, @debug.string)
  end

  def test_expect_continue_error
    mount_proc {|req, res|
      res.status = 501
      res.body = req.query['body']
    }
    start {|http|
      uheader = {'content-type' => 'application/x-www-form-urlencoded', 'expect' => '100-continue'}
      http.continue_timeout = 0
      http.request_post('/continue', 'body=ERROR', uheader) {|res|
        assert_equal('ERROR', res.read_body)
      }
    }
    assert_match(/Expect: 100-continue/, @debug.string)
    assert_not_match(/HTTP\/1.1 100 continue/, @debug.string)
  end

  def test_expect_continue_error_while_waiting
    mount_proc {|req, res|
      res.status = 501
      res.body = req.query['body']
    }
    start {|http|
      uheader = {'content-type' => 'application/x-www-form-urlencoded', 'expect' => '100-continue'}
      http.continue_timeout = 0.5
      http.request_post('/continue', 'body=ERROR', uheader) {|res|
        assert_equal('ERROR', res.read_body)
      }
    }
    assert_match(/Expect: 100-continue/, @debug.string)
    assert_not_match(/HTTP\/1.1 100 continue/, @debug.string)
  end
end

class TestNetHTTPKeepAlive < Test::Unit::TestCase
  CONFIG = {
    'host' => '127.0.0.1',
    'port' => 0,
    'proxy_host' => nil,
    'proxy_port' => nil,
    'RequestTimeout' => 1,
  }

  include TestNetHTTPUtils

  def test_keep_alive_get_auto_reconnect
    start {|http|
      res = http.get('/')
      http.keep_alive_timeout = 1
      assert_kind_of Net::HTTPResponse, res
      assert_kind_of String, res.body
      sleep 1.5
      assert_nothing_raised {
        res = http.get('/')
      }
      assert_kind_of Net::HTTPResponse, res
      assert_kind_of String, res.body
    }
  end

  def test_keep_alive_get_auto_retry
    start {|http|
      res = http.get('/')
      http.keep_alive_timeout = 5
      assert_kind_of Net::HTTPResponse, res
      assert_kind_of String, res.body
      sleep 1.5
      res = http.get('/')
      assert_kind_of Net::HTTPResponse, res
      assert_kind_of String, res.body
    }
  end

  def test_keep_alive_server_close
    def @server.run(sock)
      sock.close
    end

    start {|http|
      assert_raises(EOFError, Errno::ECONNRESET, IOError) {
        http.get('/')
      }
    }
  end
end

class TestNetHTTPLocalBind < Test::Unit::TestCase
  CONFIG = {
    'host' => 'localhost',
    'port' => 0,
    'proxy_host' => nil,
    'proxy_port' => nil,
  }

  include TestNetHTTPUtils

  def test_bind_to_local_host
    @server.mount_proc('/show_ip') { |req, res| res.body = req.remote_ip }

    http = Net::HTTP.new(config('host'), config('port'))
    http.local_host = Addrinfo.tcp(config('host'), config('port')).ip_address
    assert_not_nil(http.local_host)
    assert_nil(http.local_port)

    res = http.get('/show_ip')
    assert_equal(http.local_host, res.body)
  end

  def test_bind_to_local_port
    @server.mount_proc('/show_port') { |req, res| res.body = req.peeraddr[1].to_s }

    http = Net::HTTP.new(config('host'), config('port'))
    http.local_host = Addrinfo.tcp(config('host'), config('port')).ip_address
    http.local_port = [*10000..20000].shuffle.first.to_s
    assert_not_nil(http.local_host)
    assert_not_nil(http.local_port)

    res = http.get('/show_port')
    assert_equal(http.local_port, res.body)
  end
end