mcs/class/System/Test/System.Net/HttpListenerTest.cs

   1 //
   2 // HttpListenerTest.cs
   3 //      - Unit tests for System.Net.HttpListener
   4 //
   5 // Author:
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29 using System;
  30 using System.IO;
  31 using System.Net;
  32 using System.Net.Sockets;
  33 using System.Threading;
  34 using System.Threading.Tasks;
  35 using NUnit.Framework;
  36 using MonoTests.Helpers;
  37
  38 namespace MonoTests.System.Net {
  39         [TestFixture]
  40         public class HttpListenerTest {
  41
  42                 int? _port;
  43                 int port {
  44                         get { return _port ?? (_port = NetworkHelpers.FindFreePort ()).Value; }
  45                 }
  46
  47                 [TearDown]
  48                 public void Teardown ()
  49                 {
  50                         _port = null;
  51                 }
  52
  53                 [Test]
  54 #if FEATURE_NO_BSD_SOCKETS
  55                 [ExpectedException (typeof (PlatformNotSupportedException))]
  56 #endif
  57                 public void DefaultProperties ()
  58                 {
  59                         HttpListener listener = new HttpListener ();
  60                         Assert.AreEqual (AuthenticationSchemes.Anonymous, listener.AuthenticationSchemes, "#01");
  61                         Assert.AreEqual (null, listener.AuthenticationSchemeSelectorDelegate, "#02");
  62                         Assert.AreEqual (false, listener.IgnoreWriteExceptions, "#03");
  63                         Assert.AreEqual (false, listener.IsListening, "#03");
  64                         Assert.AreEqual (0, listener.Prefixes.Count, "#04");
  65                         Assert.AreEqual (null, listener.Realm, "#05");
  66                         Assert.AreEqual (false, listener.UnsafeConnectionNtlmAuthentication, "#06");
  67                 }
  68
  69                 [Test]
  70 #if FEATURE_NO_BSD_SOCKETS
  71                 [ExpectedException (typeof (PlatformNotSupportedException))]
  72 #endif
  73                 public void Start1 ()
  74                 {
  75                         HttpListener listener = new HttpListener ();
  76                         listener.Start ();
  77                 }
  78
  79                 [Test]
  80 #if FEATURE_NO_BSD_SOCKETS
  81                 [ExpectedException (typeof (PlatformNotSupportedException))]
  82 #endif
  83                 public void Stop1 ()
  84                 {
  85                         HttpListener listener = new HttpListener ();
  86                         listener.Stop ();
  87                 }
  88
  89                 [Test]
  90 #if FEATURE_NO_BSD_SOCKETS
  91                 [ExpectedException (typeof (PlatformNotSupportedException))]
  92 #else
  93                 [ExpectedException (typeof (InvalidOperationException))]
  94 #endif
  95                 public void GetContext1 ()
  96                 {
  97                         HttpListener listener = new HttpListener ();
  98                         // "Please call Start () before calling this method"
  99                         listener.GetContext ();
 100                 }
 101
 102                 [Test]
 103 #if FEATURE_NO_BSD_SOCKETS
 104                 [ExpectedException (typeof (PlatformNotSupportedException))]
 105 #else
 106                 [ExpectedException (typeof (InvalidOperationException))]
 107 #endif
 108                 public void GetContext2 ()
 109                 {
 110                         HttpListener listener = new HttpListener ();
 111                         listener.Start ();
 112                         // "Please call AddPrefix () before calling this method"
 113                         listener.GetContext ();
 114                 }
 115
 116                 [Test]
 117 #if FEATURE_NO_BSD_SOCKETS
 118                 [ExpectedException (typeof (PlatformNotSupportedException))]
 119 #else
 120                 [ExpectedException (typeof (InvalidOperationException))]
 121 #endif
 122                 public void BeginGetContext1 ()
 123                 {
 124                         HttpListener listener = new HttpListener ();
 125                         // "Please call Start () before calling this method"
 126                         listener.BeginGetContext (null, null);
 127                 }
 128
 129                 [Test]
 130 #if FEATURE_NO_BSD_SOCKETS
 131                 [ExpectedException (typeof (PlatformNotSupportedException))]
 132 #endif
 133                 public void BeginGetContext2 ()
 134                 {
 135                         HttpListener listener = new HttpListener ();
 136                         listener.Start ();
 137                         // One would expect this to fail as BeginGetContext1 does not fail and
 138                         // calling EndGetContext will wait forever.
 139                         // Lame. They should check that we have no prefixes.
 140                         IAsyncResult ares = listener.BeginGetContext (null, null);
 141                         Assert.IsFalse (ares.IsCompleted);
 142                 }
 143
 144                 private bool CanOpenPort(int port)
 145                 {
 146                         try
 147                         {
 148                                 using(Socket socket = new Socket (AddressFamily.InterNetwork,
 149                                         SocketType.Stream,
 150                                         ProtocolType.Tcp))
 151                                 {
 152                                         socket.Bind (new IPEndPoint (IPAddress.Loopback, port));
 153                                         socket.Listen(1);
 154                                 }
 155                         }
 156                         catch(Exception) {
 157                                 //Can be AccessDeniedException(ports 80/443 need root access) or
 158                                 //SocketException because other application is listening
 159                                 return false;
 160                         }
 161                         return true;
 162                 }
 163
 164                 [Test]
 165 #if FEATURE_NO_BSD_SOCKETS
 166                 [ExpectedException (typeof (PlatformNotSupportedException))]
 167 #endif
 168                 public void DefaultHttpPort ()
 169                 {
 170                         if (!CanOpenPort (80))
 171                                 Assert.Ignore ("Can not open port 80 skipping test.");
 172                         using(HttpListener listener = new HttpListener ())
 173                         {
 174                                 listener.Prefixes.Add ("http://127.0.0.1/");
 175                                 listener.Start ();
 176                                 Assert.IsFalse (CanOpenPort (80), "HttpListener is not listening on port 80.");
 177                         }
 178                 }
 179
 180                 [Test]
 181 #if FEATURE_NO_BSD_SOCKETS
 182                 [ExpectedException (typeof (PlatformNotSupportedException))]
 183 #endif
 184                 public void DefaultHttpsPort ()
 185                 {
 186                         if (!CanOpenPort (443))
 187                                 Assert.Ignore ("Can not open port 443 skipping test.");
 188                         using(HttpListener listener = new HttpListener ())
 189                         {
 190                                 listener.Prefixes.Add ("https://127.0.0.1/");
 191                                 listener.Start ();
 192                                 Assert.IsFalse (CanOpenPort (443), "HttpListener is not listening on port 443.");
 193                         }
 194                 }
 195
 196                 [Test]
 197 #if FEATURE_NO_BSD_SOCKETS
 198                 [ExpectedException (typeof (PlatformNotSupportedException))]
 199 #endif
 200                 public void TwoListeners_SameAddress ()
 201                 {
 202                         if (!CanOpenPort (port))
 203                                 Assert.Ignore ("port");
 204                         HttpListener listener1 = new HttpListener ();
 205                         listener1.Prefixes.Add ("http://127.0.0.1:" + port + "/");
 206                         HttpListener listener2 = new HttpListener ();
 207                         listener2.Prefixes.Add ("http://127.0.0.1:" + port + "/hola/");
 208                         listener1.Start ();
 209                         listener2.Start ();
 210                 }
 211
 212                 [Test]
 213 #if FEATURE_NO_BSD_SOCKETS
 214                 [ExpectedException (typeof (PlatformNotSupportedException))]
 215 #else
 216                 [ExpectedException (typeof (HttpListenerException))]
 217 #endif
 218                 public void TwoListeners_SameURL ()
 219                 {
 220                         if (!CanOpenPort (port))
 221                                 Assert.Ignore ("port");
 222                         HttpListener listener1 = new HttpListener ();
 223                         listener1.Prefixes.Add ("http://127.0.0.1:" + port + "/hola/");
 224                         HttpListener listener2 = new HttpListener ();
 225                         listener2.Prefixes.Add ("http://127.0.0.1:" + port + "/hola/");
 226                         listener1.Start ();
 227                         listener2.Start ();
 228                 }
 229
 230                 [Test]
 231 #if FEATURE_NO_BSD_SOCKETS
 232                 [ExpectedException (typeof (PlatformNotSupportedException))]
 233 #else
 234                 [ExpectedException (typeof (HttpListenerException))]
 235 #endif
 236                 public void MultipleSlashes ()
 237                 {
 238                         if (!CanOpenPort (port))
 239                                 Assert.Ignore ("port");
 240                         HttpListener listener = new HttpListener ();
 241                         listener.Prefixes.Add ("http://localhost:" + port + "/hola////");
 242                         // this one throws on Start(), not when adding it.
 243                         listener.Start ();
 244                 }
 245
 246                 [Test]
 247 #if FEATURE_NO_BSD_SOCKETS
 248                 [ExpectedException (typeof (PlatformNotSupportedException))]
 249 #else
 250                 [ExpectedException (typeof (HttpListenerException))]
 251 #endif
 252                 public void PercentSign ()
 253                 {
 254                         if (!CanOpenPort (port))
 255                                 Assert.Ignore ("port");
 256                         HttpListener listener = new HttpListener ();
 257                         listener.Prefixes.Add ("http://localhost:" + port + "/hola%3E/");
 258                         // this one throws on Start(), not when adding it.
 259                         listener.Start ();
 260                 }
 261
 262                 [Test]
 263 #if FEATURE_NO_BSD_SOCKETS
 264                 [ExpectedException (typeof (PlatformNotSupportedException))]
 265 #endif
 266                 public void CloseBeforeStart ()
 267                 {
 268                         HttpListener listener = new HttpListener ();
 269                         listener.Close ();
 270                 }
 271
 272                 [Test]
 273 #if FEATURE_NO_BSD_SOCKETS
 274                 [ExpectedException (typeof (PlatformNotSupportedException))]
 275 #endif
 276                 public void CloseTwice ()
 277                 {
 278                         if (!CanOpenPort (port))
 279                                 Assert.Ignore ("port");
 280                         HttpListener listener = new HttpListener ();
 281                         listener.Prefixes.Add ("http://localhost:" + port + "/hola/");
 282                         listener.Start ();
 283                         listener.Close ();
 284                         listener.Close ();
 285                 }
 286
 287                 [Test]
 288 #if FEATURE_NO_BSD_SOCKETS
 289                 [ExpectedException (typeof (PlatformNotSupportedException))]
 290 #endif
 291                 public void StartStopStart ()
 292                 {
 293                         if (!CanOpenPort (port))
 294                                 Assert.Ignore ("port");
 295                         HttpListener listener = new HttpListener ();
 296                         listener.Prefixes.Add ("http://localhost:" + port + "/hola/");
 297                         listener.Start ();
 298                         listener.Stop ();
 299                         listener.Start ();
 300                         listener.Close ();
 301                 }
 302
 303                 [Test]
 304 #if FEATURE_NO_BSD_SOCKETS
 305                 [ExpectedException (typeof (PlatformNotSupportedException))]
 306 #endif
 307                 public void StartStopDispose ()
 308                 {
 309                         if (!CanOpenPort (port))
 310                                 Assert.Ignore ("port");
 311                         using (HttpListener listener = new HttpListener ()){
 312                                 listener.Prefixes.Add ("http://localhost:" + port + "/hola/");
 313                                 listener.Start ();
 314                                 listener.Stop ();
 315                         }
 316                 }
 317
 318                 [Test]
 319 #if FEATURE_NO_BSD_SOCKETS
 320                 [ExpectedException (typeof (PlatformNotSupportedException))]
 321 #endif
 322                 public void AbortBeforeStart ()
 323                 {
 324                         HttpListener listener = new HttpListener ();
 325                         listener.Abort ();
 326                 }
 327
 328                 [Test]
 329 #if FEATURE_NO_BSD_SOCKETS
 330                 [ExpectedException (typeof (PlatformNotSupportedException))]
 331 #endif
 332                 public void AbortTwice ()
 333                 {
 334                         if (!CanOpenPort (port))
 335                                 Assert.Ignore ("port");
 336                         HttpListener listener = new HttpListener ();
 337                         listener.Prefixes.Add ("http://localhost:" + port + "/hola/");
 338                         listener.Start ();
 339                         listener.Abort ();
 340                         listener.Abort ();
 341                 }
 342
 343                 [Test]
 344 #if FEATURE_NO_BSD_SOCKETS
 345                 [ExpectedException (typeof (PlatformNotSupportedException))]
 346 #endif
 347                 public void PropertiesWhenClosed1 ()
 348                 {
 349                         HttpListener listener = new HttpListener ();
 350                         listener.Close ();
 351                         Assert.AreEqual (AuthenticationSchemes.Anonymous, listener.AuthenticationSchemes, "#01");
 352                         Assert.AreEqual (null, listener.AuthenticationSchemeSelectorDelegate, "#02");
 353                         Assert.AreEqual (false, listener.IgnoreWriteExceptions, "#03");
 354                         Assert.AreEqual (false, listener.IsListening, "#03");
 355                         Assert.AreEqual (null, listener.Realm, "#05");
 356                         Assert.AreEqual (false, listener.UnsafeConnectionNtlmAuthentication, "#06");
 357                 }
 358
 359                 [Test]
 360 #if FEATURE_NO_BSD_SOCKETS
 361                 [ExpectedException (typeof (PlatformNotSupportedException))]
 362 #else
 363                 [ExpectedException (typeof (ObjectDisposedException))]
 364 #endif
 365                 public void PropertiesWhenClosed2 ()
 366                 {
 367                         HttpListener listener = new HttpListener ();
 368                         listener.Close ();
 369                         HttpListenerPrefixCollection p = listener.Prefixes;
 370                 }
 371
 372                 [Test]
 373 #if FEATURE_NO_BSD_SOCKETS
 374                 [ExpectedException (typeof (PlatformNotSupportedException))]
 375 #else
 376                 [ExpectedException (typeof (ObjectDisposedException))]
 377 #endif
 378                 public void PropertiesWhenClosedSet1 ()
 379                 {
 380                         HttpListener listener = new HttpListener ();
 381                         listener.Close ();
 382                         listener.AuthenticationSchemes = AuthenticationSchemes.None;
 383                 }
 384
 385                 [Test]
 386 #if FEATURE_NO_BSD_SOCKETS
 387                 [ExpectedException (typeof (PlatformNotSupportedException))]
 388 #else
 389                 [ExpectedException (typeof (ObjectDisposedException))]
 390 #endif
 391                 public void PropertiesWhenClosedSet2 ()
 392                 {
 393                         HttpListener listener = new HttpListener ();
 394                         listener.Close ();
 395                         listener.AuthenticationSchemeSelectorDelegate = null;
 396                 }
 397
 398                 [Test]
 399 #if FEATURE_NO_BSD_SOCKETS
 400                 [ExpectedException (typeof (PlatformNotSupportedException))]
 401 #else
 402                 [ExpectedException (typeof (ObjectDisposedException))]
 403 #endif
 404                 public void PropertiesWhenClosedSet3 ()
 405                 {
 406                         HttpListener listener = new HttpListener ();
 407                         listener.Close ();
 408                         listener.IgnoreWriteExceptions = true;
 409                 }
 410
 411                 [Test]
 412 #if FEATURE_NO_BSD_SOCKETS
 413                 [ExpectedException (typeof (PlatformNotSupportedException))]
 414 #else
 415                 [ExpectedException (typeof (ObjectDisposedException))]
 416 #endif
 417                 public void PropertiesWhenClosedSet4 ()
 418                 {
 419                         HttpListener listener = new HttpListener ();
 420                         listener.Close ();
 421                         listener.Realm = "hola";
 422                 }
 423
 424                 [Test]
 425 #if FEATURE_NO_BSD_SOCKETS
 426                 [ExpectedException (typeof (PlatformNotSupportedException))]
 427 #else
 428                 [ExpectedException (typeof (ObjectDisposedException))]
 429 #endif
 430                 public void PropertiesWhenClosedSet5 ()
 431                 {
 432                         HttpListener listener = new HttpListener ();
 433                         listener.Close ();
 434                         listener.UnsafeConnectionNtlmAuthentication = true;
 435                 }
 436
 437                 [Test]
 438 #if FEATURE_NO_BSD_SOCKETS
 439                 [ExpectedException (typeof (PlatformNotSupportedException))]
 440 #endif
 441                 public void PropertiesWhenClosed3 ()
 442                 {
 443                         HttpListener listener = new HttpListener ();
 444                         listener.Close ();
 445                         Assert.IsFalse (listener.IsListening);
 446                 }
 447
 448                 [Test]
 449 #if FEATURE_NO_BSD_SOCKETS
 450                 [ExpectedException (typeof (PlatformNotSupportedException))]
 451 #endif
 452                 public void CloseWhileBegin ()
 453                 {
 454                         HttpListener listener = new HttpListener ();
 455                         listener.Prefixes.Add ("http://127.0.0.1:" + NetworkHelpers.FindFreePort () + "/closewhilebegin/");
 456                         listener.Start ();
 457                         CallMe cm = new CallMe ();
 458                         listener.BeginGetContext (cm.Callback, listener);
 459                         listener.Close ();
 460                         if (false == cm.Event.WaitOne (3000, false))
 461                                 Assert.Fail ("This should not time out.");
 462                         Assert.IsNotNull (cm.Error);
 463                         Assert.AreEqual (typeof (ObjectDisposedException), cm.Error.GetType (), "Exception type");
 464                         cm.Dispose ();
 465                 }
 466
 467                 [Test]
 468 #if FEATURE_NO_BSD_SOCKETS
 469                 [ExpectedException (typeof (PlatformNotSupportedException))]
 470 #endif
 471                 public void AbortWhileBegin ()
 472                 {
 473                         HttpListener listener = new HttpListener ();
 474                         listener.Prefixes.Add ("http://127.0.0.1:" + NetworkHelpers.FindFreePort () + "/abortwhilebegin/");
 475                         listener.Start ();
 476                         CallMe cm = new CallMe ();
 477                         listener.BeginGetContext (cm.Callback, listener);
 478                         listener.Abort ();
 479                         if (false == cm.Event.WaitOne (3000, false))
 480                                 Assert.Fail ("This should not time out.");
 481                         Assert.IsNotNull (cm.Error);
 482                         Assert.AreEqual (typeof (ObjectDisposedException), cm.Error.GetType (), "Exception type");
 483                         cm.Dispose ();
 484                 }
 485
 486                 [Test]
 487 #if FEATURE_NO_BSD_SOCKETS
 488                 [ExpectedException (typeof (PlatformNotSupportedException))]
 489 #else
 490                 [ExpectedException (typeof (HttpListenerException))]
 491 #endif
 492                 public void CloseWhileGet ()
 493                 {
 494                         // "System.Net.HttpListener Exception : The I/O operation has been aborted
 495                         // because of either a thread exit or an application request
 496                         //   at System.Net.HttpListener.GetContext()
 497                         //   at MonoTests.System.Net.HttpListenerTest.CloseWhileGet()
 498
 499                         HttpListener listener = new HttpListener ();
 500                         listener.Prefixes.Add ("http://127.0.0.1:" + NetworkHelpers.FindFreePort () + "/closewhileget/");
 501                         listener.Start ();
 502                         RunMe rm = new RunMe (1000, new ThreadStart (listener.Close), new object [0]);
 503                         rm.Start ();
 504                         HttpListenerContext ctx = listener.GetContext ();
 505                 }
 506
 507                 [Test]
 508 #if FEATURE_NO_BSD_SOCKETS
 509                 [ExpectedException (typeof (PlatformNotSupportedException))]
 510 #else
 511                 [ExpectedException (typeof (HttpListenerException))]
 512 #endif
 513                 public void AbortWhileGet ()
 514                 {
 515                         // "System.Net.HttpListener Exception : The I/O operation has been aborted
 516                         // because of either a thread exit or an application request
 517                         //   at System.Net.HttpListener.GetContext()
 518                         //   at MonoTests.System.Net.HttpListenerTest.CloseWhileGet()
 519
 520                         HttpListener listener = new HttpListener ();
 521                         listener.Prefixes.Add ("http://127.0.0.1:" + NetworkHelpers.FindFreePort () + "/abortwhileget/");
 522                         listener.Start ();
 523                         RunMe rm = new RunMe (1000, new ThreadStart (listener.Abort), new object [0]);
 524                         rm.Start ();
 525                         HttpListenerContext ctx = listener.GetContext ();
 526                 }
 527
 528                 class RunMe {
 529                         Delegate d;
 530                         int delay_ms;
 531                         object [] args;
 532                         public object Result;
 533
 534                         public RunMe (int delay_ms, Delegate d, object [] args)
 535                         {
 536                                 this.delay_ms = delay_ms;
 537                                 this.d = d;
 538                                 this.args = args;
 539                         }
 540
 541                         public void Start ()
 542                         {
 543                                 Thread th = new Thread (new ThreadStart (Run));
 544                                 th.Start ();
 545                         }
 546
 547                         void Run ()
 548                         {
 549                                 Thread.Sleep (delay_ms);
 550                                 Result = d.DynamicInvoke (args);
 551                         }
 552                 }
 553
 554                 class CallMe {
 555                         public ManualResetEvent Event = new ManualResetEvent (false);
 556                         public bool Called;
 557                         public HttpListenerContext Context;
 558                         public Exception Error;
 559
 560                         public void Reset ()
 561                         {
 562                                 Called = false;
 563                                 Context = null;
 564                                 Error = null;
 565                                 Event.Reset ();
 566                         }
 567
 568                         public void Callback (IAsyncResult ares)
 569                         {
 570                                 Called = true;
 571                                 if (ares == null) {
 572                                         Error = new ArgumentNullException ("ares");
 573                                         return;
 574                                 }
 575
 576                                 try {
 577                                         HttpListener listener = (HttpListener) ares.AsyncState;
 578                                         Context = listener.EndGetContext (ares);
 579                                 } catch (Exception e) {
 580                                         Error = e;
 581                                 }
 582                                 Event.Set ();
 583                         }
 584
 585                         public void Dispose ()
 586                         {
 587                                 Event.Close ();
 588                         }
 589                 }
 590
 591                 [Test]
 592 #if FEATURE_NO_BSD_SOCKETS
 593                 [ExpectedException (typeof (PlatformNotSupportedException))]
 594 #endif
 595                 public void ConnectionReuse ()
 596                 {
 597                         var uri = "http://localhost:" + NetworkHelpers.FindFreePort () + "/";
 598
 599                         HttpListener listener = new HttpListener ();
 600                         listener.Prefixes.Add (uri);
 601                         listener.Start ();
 602
 603                         IPEndPoint expectedIpEndPoint = CreateListenerRequest (listener, uri);
 604
 605                         Assert.AreEqual (expectedIpEndPoint, CreateListenerRequest (listener, uri), "reuse1");
 606                         Assert.AreEqual (expectedIpEndPoint, CreateListenerRequest (listener, uri), "reuse2");
 607                 }
 608
 609                 public IPEndPoint CreateListenerRequest (HttpListener listener, string uri)
 610                 {
 611                         IPEndPoint ipEndPoint = null;
 612                         var mre = new ManualResetEventSlim ();
 613                         listener.BeginGetContext (result => {
 614                                 ipEndPoint = ListenerCallback (result);
 615                                 mre.Set ();
 616                         }, listener);
 617
 618                         var request = (HttpWebRequest) WebRequest.Create (uri);
 619                         request.Method = "POST";
 620
 621                         // We need to write something
 622                         request.GetRequestStream ().Write (new byte [] {(byte)'a'}, 0, 1);
 623                         request.GetRequestStream ().Dispose ();
 624
 625                         // Send request, socket is created or reused.
 626                         var response = request.GetResponse ();
 627
 628                         // Close response so socket can be reused.
 629                         response.Close ();
 630
 631                         mre.Wait ();
 632
 633                         return ipEndPoint;
 634                 }
 635
 636                 public static IPEndPoint ListenerCallback (IAsyncResult result)
 637                 {
 638                         var listener = (HttpListener) result.AsyncState;
 639                         var context = listener.EndGetContext (result);
 640                         var clientEndPoint = context.Request.RemoteEndPoint;
 641
 642                         // Disposing InputStream should not avoid socket reuse
 643                         context.Request.InputStream.Dispose ();
 644
 645                         // Close OutputStream to send response
 646                         context.Response.OutputStream.Close ();
 647
 648                         return clientEndPoint;
 649                 }
 650
 651                 [Test]
 652 #if FEATURE_NO_BSD_SOCKETS
 653                 [ExpectedException (typeof (PlatformNotSupportedException))]
 654 #endif
 655                 public void UserHeaderWithDoubleMultiValue ()
 656                 {
 657                         string uri = "http://localhost:" + NetworkHelpers.FindFreePort () + "/";
 658
 659                         var l = new HttpListener ();
 660                         l.Prefixes.Add (uri);
 661                         l.Start ();
 662                         l.BeginGetContext (ar => {
 663                                 var ctx = l.EndGetContext (ar);
 664
 665                                 var response = ctx.Response;
 666                                 response.Headers.Add ("X-Custom-Header", "A");
 667                                 response.Headers.Add ("X-Custom-Header", "B");
 668
 669                                 response.Close ();
 670                         }, null);
 671
 672                         HttpWebRequest wr = HttpWebRequest.CreateHttp (uri);
 673                         var resp = wr.GetResponse ();
 674                         var vls = resp.Headers.GetValues ("X-Custom-Header");
 675
 676                         Assert.AreEqual (2, vls.Length);
 677
 678                         l.Close ();
 679                 }
 680
 681                 [Test]
 682 #if FEATURE_NO_BSD_SOCKETS
 683                 [ExpectedException (typeof (PlatformNotSupportedException))]
 684 #endif
 685                 public void HttpClientIsDisconnectedCheckForWriteException()
 686                 {
 687                         string uri = "http://localhost:" + NetworkHelpers.FindFreePort () + "/";
 688
 689                         AutoResetEvent exceptionOccuredEvent = new AutoResetEvent (false);
 690                         HttpListener listener = new HttpListener {
 691                                 IgnoreWriteExceptions = false
 692                         };
 693                         listener.Prefixes.Add (uri);
 694                         listener.Start ();
 695                         listener.BeginGetContext (result =>
 696                         {
 697                                 HttpListenerContext context = listener.EndGetContext (result);
 698                                 context.Response.SendChunked = true;
 699                                 context.Request.InputStream.Close ();
 700
 701                                 var bytes = new byte [1024];
 702                                 using(Stream outputStream = context.Response.OutputStream) {
 703                                         try {
 704                                                 while (true)
 705                                                         outputStream.Write (bytes, 0, bytes.Length);
 706                                         } catch {
 707                                                 exceptionOccuredEvent.Set ();
 708                                         }
 709                                 }
 710                         }, null);
 711
 712                         Task.Factory.StartNew (() =>
 713                         {
 714                                 var webRequest = (HttpWebRequest)WebRequest.Create (uri);
 715                                 webRequest.Method = "POST";
 716                                 webRequest.KeepAlive = false;
 717                                 Stream requestStream = webRequest.GetRequestStream ();
 718                                 requestStream.WriteByte (1);
 719                                 requestStream.Close ();
 720                                 using (WebResponse response = webRequest.GetResponse ())
 721                                 using (Stream stream = response.GetResponseStream ()) {
 722                                         byte[] clientBytes = new byte [1024];
 723                                         Assert.IsNotNull (stream, "#01");
 724                                         stream.Read (clientBytes, 0, clientBytes.Length);
 725                                 }
 726                         });
 727
 728                         Assert.IsTrue (exceptionOccuredEvent.WaitOne (15 * 1000), "#02");
 729                 }
 730         }
 731 }
 732