test/unit/test_server.rb

   1 # -*- encoding: binary -*-
   2
   3 # Copyright (c) 2005 Zed A. Shaw
   4 # You can redistribute it and/or modify it under the same terms as Ruby 1.8 or
   5 # the GPLv3
   6 #
   7 # Additional work donated by contributors.  See http://mongrel.rubyforge.org/attributions.html
   8 # for more information.
   9
  10 require 'test/test_helper'
  11
  12 include Unicorn
  13
  14 class TestHandler
  15
  16   def call(env)
  17     while env['rack.input'].read(4096)
  18     end
  19     [200, { 'Content-Type' => 'text/plain' }, ['hello!\n']]
  20     rescue Unicorn::ClientShutdown, Unicorn::HttpParserError => e
  21       $stderr.syswrite("#{e.class}: #{e.message} #{e.backtrace.empty?}\n")
  22       raise e
  23   end
  24 end
  25
  26
  27 class WebServerTest < Test::Unit::TestCase
  28
  29   def setup
  30     @valid_request = "GET / HTTP/1.1\r\nHost: www.zedshaw.com\r\nContent-Type: text/plain\r\n\r\n"
  31     @port = unused_port
  32     @tester = TestHandler.new
  33     redirect_test_io do
  34       @server = HttpServer.new(@tester, :listeners => [ "127.0.0.1:#{@port}" ] )
  35       @server.start
  36     end
  37   end
  38
  39   def teardown
  40     redirect_test_io do
  41       wait_workers_ready("test_stderr.#$$.log", 1)
  42       File.truncate("test_stderr.#$$.log", 0)
  43       @server.stop(false)
  44     end
  45     reset_sig_handlers
  46   end
  47
  48   def test_preload_app_config
  49     teardown
  50     tmp = Tempfile.new('test_preload_app_config')
  51     ObjectSpace.undefine_finalizer(tmp)
  52     app = lambda { ||
  53       tmp.sysseek(0)
  54       tmp.truncate(0)
  55       tmp.syswrite($$)
  56       lambda { |env| [ 200, { 'Content-Type' => 'text/plain' }, [ "#$$\n" ] ] }
  57     }
  58     redirect_test_io do
  59       @server = HttpServer.new(app, :listeners => [ "127.0.0.1:#@port"] )
  60       @server.start
  61     end
  62     results = hit(["http://localhost:#@port/"])
  63     worker_pid = results[0].to_i
  64     assert worker_pid != 0
  65     tmp.sysseek(0)
  66     loader_pid = tmp.sysread(4096).to_i
  67     assert loader_pid != 0
  68     assert_equal worker_pid, loader_pid
  69     teardown
  70
  71     redirect_test_io do
  72       @server = HttpServer.new(app, :listeners => [ "127.0.0.1:#@port"],
  73                                :preload_app => true)
  74       @server.start
  75     end
  76     results = hit(["http://localhost:#@port/"])
  77     worker_pid = results[0].to_i
  78     assert worker_pid != 0
  79     tmp.sysseek(0)
  80     loader_pid = tmp.sysread(4096).to_i
  81     assert_equal $$, loader_pid
  82     assert worker_pid != loader_pid
  83     ensure
  84       tmp.close!
  85   end
  86
  87   def test_broken_app
  88     teardown
  89     app = lambda { |env| raise RuntimeError, "hello" }
  90     # [200, {}, []] }
  91     redirect_test_io do
  92       @server = HttpServer.new(app, :listeners => [ "127.0.0.1:#@port"] )
  93       @server.start
  94     end
  95     sock = nil
  96     assert_nothing_raised do
  97       sock = TCPSocket.new('127.0.0.1', @port)
  98       sock.syswrite("GET / HTTP/1.0\r\n\r\n")
  99     end
 100
 101     assert_match %r{\AHTTP/1.[01] 500\b}, sock.sysread(4096)
 102     assert_nothing_raised { sock.close }
 103   end
 104
 105   def test_simple_server
 106     results = hit(["http://localhost:#{@port}/test"])
 107     assert_equal 'hello!\n', results[0], "Handler didn't really run"
 108   end
 109
 110   def test_client_shutdown_writes
 111     sock = nil
 112     buf = nil
 113     bs = 15609315 * rand
 114     assert_nothing_raised do
 115       sock = TCPSocket.new('127.0.0.1', @port)
 116       sock.syswrite("PUT /hello HTTP/1.1\r\n")
 117       sock.syswrite("Host: example.com\r\n")
 118       sock.syswrite("Transfer-Encoding: chunked\r\n")
 119       sock.syswrite("Trailer: X-Foo\r\n")
 120       sock.syswrite("\r\n")
 121       sock.syswrite("%x\r\n" % [ bs ])
 122       sock.syswrite("F" * bs)
 123       sock.syswrite("\r\n0\r\nX-")
 124       "Foo: bar\r\n\r\n".each_byte do |x|
 125         sock.syswrite x.chr
 126         sleep 0.05
 127       end
 128       # we wrote the entire request before shutting down, server should
 129       # continue to process our request and never hit EOFError on our sock
 130       sock.shutdown(Socket::SHUT_WR)
 131       buf = sock.read
 132     end
 133     assert_equal 'hello!\n', buf.split(/\r\n\r\n/).last
 134     next_client = Net::HTTP.get(URI.parse("http://127.0.0.1:#@port/"))
 135     assert_equal 'hello!\n', next_client
 136     lines = File.readlines("test_stderr.#$$.log")
 137     assert lines.grep(/^Unicorn::ClientShutdown: /).empty?
 138     assert_nothing_raised { sock.close }
 139   end
 140
 141   def test_client_shutdown_write_truncates
 142     sock = nil
 143     buf = nil
 144     bs = 15609315 * rand
 145     assert_nothing_raised do
 146       sock = TCPSocket.new('127.0.0.1', @port)
 147       sock.syswrite("PUT /hello HTTP/1.1\r\n")
 148       sock.syswrite("Host: example.com\r\n")
 149       sock.syswrite("Transfer-Encoding: chunked\r\n")
 150       sock.syswrite("Trailer: X-Foo\r\n")
 151       sock.syswrite("\r\n")
 152       sock.syswrite("%x\r\n" % [ bs ])
 153       sock.syswrite("F" * (bs / 2.0))
 154
 155       # shutdown prematurely, this will force the server to abort
 156       # processing on us even during app dispatch
 157       sock.shutdown(Socket::SHUT_WR)
 158       IO.select([sock], nil, nil, 60) or raise "Timed out"
 159       buf = sock.read
 160     end
 161     assert_equal "", buf
 162     next_client = Net::HTTP.get(URI.parse("http://127.0.0.1:#@port/"))
 163     assert_equal 'hello!\n', next_client
 164     lines = File.readlines("test_stderr.#$$.log")
 165     lines = lines.grep(/^Unicorn::ClientShutdown: bytes_read=\d+/)
 166     assert_equal 1, lines.size
 167     assert_match %r{\AUnicorn::ClientShutdown: bytes_read=\d+ true$}, lines[0]
 168     assert_nothing_raised { sock.close }
 169   end
 170
 171   def test_client_malformed_body
 172     sock = nil
 173     bs = 15653984
 174     assert_nothing_raised do
 175       sock = TCPSocket.new('127.0.0.1', @port)
 176       sock.syswrite("PUT /hello HTTP/1.1\r\n")
 177       sock.syswrite("Host: example.com\r\n")
 178       sock.syswrite("Transfer-Encoding: chunked\r\n")
 179       sock.syswrite("Trailer: X-Foo\r\n")
 180       sock.syswrite("\r\n")
 181       sock.syswrite("%x\r\n" % [ bs ])
 182       sock.syswrite("F" * bs)
 183     end
 184     begin
 185       File.open("/dev/urandom", "rb") { |fp| sock.syswrite(fp.sysread(16384)) }
 186     rescue
 187     end
 188     assert_nothing_raised { sock.close }
 189     next_client = Net::HTTP.get(URI.parse("http://127.0.0.1:#@port/"))
 190     assert_equal 'hello!\n', next_client
 191     lines = File.readlines("test_stderr.#$$.log")
 192     lines = lines.grep(/^Unicorn::HttpParserError: .* true$/)
 193     assert_equal 1, lines.size
 194   end
 195
 196   def do_test(string, chunk, close_after=nil, shutdown_delay=0)
 197     # Do not use instance variables here, because it needs to be thread safe
 198     socket = TCPSocket.new("127.0.0.1", @port);
 199     request = StringIO.new(string)
 200     chunks_out = 0
 201
 202     while data = request.read(chunk)
 203       chunks_out += socket.write(data)
 204       socket.flush
 205       sleep 0.2
 206       if close_after and chunks_out > close_after
 207         socket.close
 208         sleep 1
 209       end
 210     end
 211     sleep(shutdown_delay)
 212     socket.write(" ") # Some platforms only raise the exception on attempted write
 213     socket.flush
 214   end
 215
 216   def test_trickle_attack
 217     do_test(@valid_request, 3)
 218   end
 219
 220   def test_close_client
 221     assert_raises IOError do
 222       do_test(@valid_request, 10, 20)
 223     end
 224   end
 225
 226   def test_bad_client
 227     redirect_test_io do
 228       do_test("GET /test HTTP/BAD", 3)
 229     end
 230   end
 231
 232   def test_logger_set
 233     assert_equal @server.logger, Unicorn::HttpRequest::DEFAULTS["rack.logger"]
 234   end
 235
 236   def test_logger_changed
 237     tmp = Logger.new($stdout)
 238     @server.logger = tmp
 239     assert_equal tmp, Unicorn::HttpRequest::DEFAULTS["rack.logger"]
 240   end
 241
 242   def test_bad_client_400
 243     sock = nil
 244     assert_nothing_raised do
 245       sock = TCPSocket.new('127.0.0.1', @port)
 246       sock.syswrite("GET / HTTP/1.0\r\nHost: foo\rbar\r\n\r\n")
 247     end
 248     assert_match %r{\AHTTP/1.[01] 400\b}, sock.sysread(4096)
 249     assert_nothing_raised { sock.close }
 250   end
 251
 252   def test_http_0_9
 253     sock = nil
 254     assert_nothing_raised do
 255       sock = TCPSocket.new('127.0.0.1', @port)
 256       sock.syswrite("GET /hello\r\n")
 257     end
 258     assert_match 'hello!\n', sock.sysread(4096)
 259     assert_nothing_raised { sock.close }
 260   end
 261
 262   def test_header_is_too_long
 263     redirect_test_io do
 264       long = "GET /test HTTP/1.1\r\n" + ("X-Big: stuff\r\n" * 15000) + "\r\n"
 265       assert_raises Errno::ECONNRESET, Errno::EPIPE, Errno::ECONNABORTED, Errno::EINVAL, IOError do
 266         do_test(long, long.length/2, 10)
 267       end
 268     end
 269   end
 270
 271   def test_file_streamed_request
 272     body = "a" * (Unicorn::Const::MAX_BODY * 2)
 273     long = "PUT /test HTTP/1.1\r\nContent-length: #{body.length}\r\n\r\n" + body
 274     do_test(long, Unicorn::Const::CHUNK_SIZE * 2 - 400)
 275   end
 276
 277   def test_file_streamed_request_bad_body
 278     body = "a" * (Unicorn::Const::MAX_BODY * 2)
 279     long = "GET /test HTTP/1.1\r\nContent-ength: #{body.length}\r\n\r\n" + body
 280     assert_raises(EOFError,Errno::ECONNRESET,Errno::EPIPE,Errno::EINVAL,
 281                   Errno::EBADF) {
 282       do_test(long, Unicorn::Const::CHUNK_SIZE * 2 - 400)
 283     }
 284   end
 285
 286   def test_listener_names
 287     assert_equal [ "127.0.0.1:#@port" ], Unicorn.listener_names
 288   end
 289 end