test/test_tcp_splice.rb

   1 require 'socket'
   2 require 'io/wait'
   3 require 'io/splice'
   4 require 'io/nonblock'
   5 require "test/unit"
   6
   7 class TestTCPCopyStream < Test::Unit::TestCase
   8   def setup
   9     host = ENV["TEST_HOST"] || "127.0.0.1"
  10     @srv = TCPServer.new(host, 0)
  11     @port = @srv.addr[1]
  12     @client = TCPSocket.new(host, @port)
  13     @client.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
  14     @accept = @srv.accept
  15     @accept.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
  16     @client.sync = @accept.sync = true
  17     @r, @w = IO.pipe
  18   end
  19
  20   def teardown
  21     @srv.close
  22     [ @client, @accept, @r, @w ].each { |io| io.close unless io.closed? }
  23   end
  24
  25   def test_client_to_server_eof
  26     nr = 2000
  27     buf = '0123456789abcdef' * 1024
  28     expect = buf.size * nr
  29     thr = Thread.new do
  30       nr.times { @client.write(buf) }
  31       @client.close
  32     end
  33     sleep 1 # wait for rcvbuf to fill up
  34     bytes = IO::Splice.copy_stream(@accept, "/dev/null")
  35     assert_equal expect, bytes
  36   end
  37
  38   def test_client_to_server_expect
  39     nr = 2000
  40     buf = '0123456789abcdef' * 1024
  41     expect = buf.size * nr
  42     thr = Thread.new do
  43       nr.times { @client.write(buf) }
  44     end
  45     sleep 1 # wait for rcvbuf to fill up
  46     bytes = IO::Splice.copy_stream(@accept, "/dev/null", expect)
  47     assert_equal expect, bytes
  48   end
  49
  50   def test_mega_splice
  51     nr = 2000
  52     buf = '0123456789abcdef' * 1024
  53     expect = buf.size * nr
  54     thr = Thread.new do
  55       nr.times { @client.write(buf) }
  56       @client.close
  57     end
  58     size_t_max = if (1 << 30).kind_of?(Bignum)
  59       0xffffffff
  60     else
  61       0xffffffffffffffff
  62     end
  63     bytes = IO::Splice.copy_stream(@accept, "/dev/null", size_t_max)
  64     assert_equal expect, bytes
  65   end
  66 end