mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs

   1 //
   2 // ClientRuntimeChannel.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2006 Novell, Inc.  http://www.novell.com
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections.Generic;
  30 using System.Reflection;
  31 using System.Runtime.Serialization;
  32 using System.ServiceModel.Channels;
  33 using System.ServiceModel.Description;
  34 using System.ServiceModel.Dispatcher;
  35 using System.ServiceModel.Security;
  36 using System.Threading;
  37 using System.Xml;
  38
  39 namespace System.ServiceModel.MonoInternal
  40 {
  41 #if DISABLE_REAL_PROXY
  42         // FIXME: This is a quick workaround for bug #571907
  43         public
  44 #endif
  45         interface IInternalContextChannel
  46         {
  47                 ContractDescription Contract { get; }
  48
  49                 object Process (MethodBase method, string operationName, object [] parameters, OperationContext context);
  50
  51                 IAsyncResult BeginProcess (MethodBase method, string operationName, object [] parameters, AsyncCallback callback, object asyncState);
  52
  53                 object EndProcess (MethodBase method, string operationName, object [] parameters, IAsyncResult result);
  54         }
  55
  56 #if DISABLE_REAL_PROXY
  57         // FIXME: This is a quick workaround for bug #571907
  58         public
  59 #endif
  60         class ClientRuntimeChannel
  61                 : CommunicationObject, IClientChannel, IInternalContextChannel
  62         {
  63                 ClientRuntime runtime;
  64                 EndpointAddress remote_address;
  65                 ContractDescription contract;
  66                 MessageVersion message_version;
  67                 TimeSpan default_open_timeout, default_close_timeout;
  68                 IChannel channel;
  69                 IChannelFactory factory;
  70                 TimeSpan? operation_timeout = null;
  71                 ChannelFactory channel_factory;
  72
  73                 #region delegates
  74                 readonly ProcessDelegate _processDelegate;
  75
  76                 delegate object ProcessDelegate (MethodBase method, string operationName, bool isAsync, ref object [] parameters, OperationContext context);
  77
  78                 readonly RequestDelegate requestDelegate;
  79
  80                 delegate Message RequestDelegate (Message msg, TimeSpan timeout);
  81
  82                 readonly SendDelegate sendDelegate;
  83
  84                 delegate void SendDelegate (Message msg, TimeSpan timeout);
  85                 #endregion
  86
  87                 public ClientRuntimeChannel (ServiceEndpoint endpoint,
  88                         ChannelFactory channelFactory, EndpointAddress remoteAddress, Uri via)
  89                         : this (endpoint.CreateClientRuntime (null), endpoint.Contract, channelFactory.DefaultOpenTimeout, channelFactory.DefaultCloseTimeout, null, channelFactory.OpenedChannelFactory, endpoint.Binding.MessageVersion, remoteAddress, via)
  90                 {
  91                         channel_factory = channelFactory;
  92                 }
  93
  94                 public ClientRuntimeChannel (ClientRuntime runtime, ContractDescription contract, TimeSpan openTimeout, TimeSpan closeTimeout, IChannel contextChannel, IChannelFactory factory, MessageVersion messageVersion, EndpointAddress remoteAddress, Uri via)
  95                 {
  96                         if (runtime == null)
  97                                 throw new ArgumentNullException ("runtime");
  98                         if (messageVersion == null)
  99                                 throw new ArgumentNullException ("messageVersion");
 100                         this.runtime = runtime;
 101                         this.remote_address = remoteAddress;
 102                         if (runtime.Via == null)
 103                                 runtime.Via = via ?? (remote_address != null ?remote_address.Uri : null);
 104                         this.contract = contract;
 105                         this.message_version = messageVersion;
 106                         default_open_timeout = openTimeout;
 107                         default_close_timeout = closeTimeout;
 108                         _processDelegate = new ProcessDelegate (Process);
 109                         requestDelegate = new RequestDelegate (Request);
 110                         sendDelegate = new SendDelegate (Send);
 111
 112                         // default values
 113                         AllowInitializationUI = true;
 114
 115                         if (contextChannel != null)
 116                                 channel = contextChannel;
 117                         else {
 118                                 var method = factory.GetType ().GetMethod ("CreateChannel", new Type [] {typeof (EndpointAddress), typeof (Uri)});
 119                                 try {
 120                                         channel = (IChannel) method.Invoke (factory, new object [] {remote_address, Via});
 121                                         this.factory = factory;
 122                                 } catch (TargetInvocationException ex) {
 123                                         if (ex.InnerException != null)
 124                                                 throw ex.InnerException;
 125                                         else
 126                                                 throw;
 127                                 }
 128                         }
 129                 }
 130
 131                 public ContractDescription Contract {
 132                         get { return contract; }
 133                 }
 134
 135                 public ClientRuntime Runtime {
 136                         get { return runtime; }
 137                 }
 138
 139                 IRequestChannel RequestChannel {
 140                         get { return channel as IRequestChannel; }
 141                 }
 142
 143                 IOutputChannel OutputChannel {
 144                         get { return channel as IOutputChannel; }
 145                 }
 146
 147                 internal IDuplexChannel DuplexChannel {
 148                         get { return channel as IDuplexChannel; }
 149                 }
 150
 151                 #region IClientChannel
 152
 153                 bool did_interactive_initialization;
 154
 155                 public bool AllowInitializationUI { get; set; }
 156
 157                 public bool DidInteractiveInitialization {
 158                         get { return did_interactive_initialization; }
 159                 }
 160
 161                 public Uri Via {
 162                         get { return runtime.Via; }
 163                 }
 164
 165                 class DelegatingWaitHandle : WaitHandle
 166                 {
 167                         public DelegatingWaitHandle (IAsyncResult [] results)
 168                         {
 169                                 this.results = results;
 170                         }
 171
 172                         IAsyncResult [] results;
 173
 174                         protected override void Dispose (bool disposing)
 175                         {
 176                                 if (disposing)
 177                                         foreach (var r in results)
 178                                                 r.AsyncWaitHandle.Close ();
 179                         }
 180
 181                         public override bool WaitOne ()
 182                         {
 183                                 foreach (var r in results)
 184                                         r.AsyncWaitHandle.WaitOne ();
 185                                 return true;
 186                         }
 187
 188                         public override bool WaitOne (int millisecondsTimeout)
 189                         {
 190                                 return WaitHandle.WaitAll (ResultWaitHandles, millisecondsTimeout);
 191                         }
 192
 193                         WaitHandle [] ResultWaitHandles {
 194                                 get {
 195                                         var arr = new WaitHandle [results.Length];
 196                                         for (int i = 0; i < arr.Length; i++)
 197                                                 arr [i] = results [i].AsyncWaitHandle;
 198                                         return arr;
 199                                 }
 200                         }
 201
 202                         public override bool WaitOne (int millisecondsTimeout, bool exitContext)
 203                         {
 204                                 return WaitHandle.WaitAll (ResultWaitHandles, millisecondsTimeout, exitContext);
 205                         }
 206
 207                         public override bool WaitOne (TimeSpan timeout, bool exitContext)
 208                         {
 209                                 return WaitHandle.WaitAll (ResultWaitHandles, timeout, exitContext);
 210                         }
 211                 }
 212
 213                 class DisplayUIAsyncResult : IAsyncResult
 214                 {
 215                         public DisplayUIAsyncResult (IAsyncResult [] results)
 216                         {
 217                                 this.results = results;
 218                         }
 219
 220                         IAsyncResult [] results;
 221
 222                         internal IAsyncResult [] Results {
 223                                 get { return results; }
 224                         }
 225
 226                         public object AsyncState {
 227                                 get { return null; }
 228                         }
 229
 230                         WaitHandle wait_handle;
 231
 232                         public WaitHandle AsyncWaitHandle {
 233                                 get {
 234                                         if (wait_handle == null)
 235                                                 wait_handle = new DelegatingWaitHandle (results);
 236                                         return wait_handle;
 237                                 }
 238                         }
 239
 240                         public bool CompletedSynchronously {
 241                                 get {
 242                                         foreach (var r in results)
 243                                                 if (!r.CompletedSynchronously)
 244                                                         return false;
 245                                         return true;
 246                                 }
 247                         }
 248                         public bool IsCompleted {
 249                                 get {
 250                                         foreach (var r in results)
 251                                                 if (!r.IsCompleted)
 252                                                         return false;
 253                                         return true;
 254                                 }
 255                         }
 256                 }
 257
 258                 public IAsyncResult BeginDisplayInitializationUI (
 259                         AsyncCallback callback, object state)
 260                 {
 261                         OnInitializationUI ();
 262                         IAsyncResult [] arr = new IAsyncResult [runtime.InteractiveChannelInitializers.Count];
 263                         int i = 0;
 264                         foreach (var init in runtime.InteractiveChannelInitializers)
 265                                 arr [i++] = init.BeginDisplayInitializationUI (this, callback, state);
 266                         return new DisplayUIAsyncResult (arr);
 267                 }
 268
 269                 public void EndDisplayInitializationUI (
 270                         IAsyncResult result)
 271                 {
 272                         DisplayUIAsyncResult r = (DisplayUIAsyncResult) result;
 273                         int i = 0;
 274                         foreach (var init in runtime.InteractiveChannelInitializers)
 275                                 init.EndDisplayInitializationUI (r.Results [i++]);
 276
 277                         did_interactive_initialization = true;
 278                 }
 279
 280                 public void DisplayInitializationUI ()
 281                 {
 282                         OnInitializationUI ();
 283                         foreach (var init in runtime.InteractiveChannelInitializers)
 284                                 init.EndDisplayInitializationUI (init.BeginDisplayInitializationUI (this, null, null));
 285
 286                         did_interactive_initialization = true;
 287                 }
 288
 289                 void OnInitializationUI ()
 290                 {
 291                         if (!AllowInitializationUI && runtime.InteractiveChannelInitializers.Count > 0)
 292                                 throw new InvalidOperationException ("AllowInitializationUI is set to false but the client runtime contains one or more InteractiveChannelInitializers.");
 293                 }
 294
 295                 public void Dispose ()
 296                 {
 297                         Close ();
 298                 }
 299
 300                 public event EventHandler<UnknownMessageReceivedEventArgs> UnknownMessageReceived;
 301
 302                 #endregion
 303
 304                 #region IContextChannel
 305
 306                 [MonoTODO]
 307                 public bool AllowOutputBatching { get; set; }
 308
 309                 public IInputSession InputSession {
 310                         get {
 311                                 ISessionChannel<IInputSession> ch = RequestChannel as ISessionChannel<IInputSession>;
 312                                 ch = ch ?? OutputChannel as ISessionChannel<IInputSession>;
 313                                 if (ch != null)
 314                                         return ch.Session;
 315                                 var dch = OutputChannel as ISessionChannel<IDuplexSession>;
 316                                 return dch != null ? dch.Session : null;
 317                         }
 318                 }
 319
 320                 public EndpointAddress LocalAddress {
 321                         get {
 322                                 var dc = OperationChannel as IDuplexChannel;
 323                                 return dc != null ? dc.LocalAddress : null;
 324                         }
 325                 }
 326
 327                 public TimeSpan OperationTimeout {
 328                         get { return this.operation_timeout ?? (channel_factory != null ? channel_factory.Endpoint.Binding.SendTimeout : DefaultCommunicationTimeouts.Instance.SendTimeout); }
 329                         set { this.operation_timeout = value; }
 330                 }
 331
 332                 public IOutputSession OutputSession {
 333                         get {
 334                                 ISessionChannel<IOutputSession> ch = RequestChannel as ISessionChannel<IOutputSession>;
 335                                 ch = ch ?? OutputChannel as ISessionChannel<IOutputSession>;
 336                                 if (ch != null)
 337                                         return ch.Session;
 338                                 var dch = OutputChannel as ISessionChannel<IDuplexSession>;
 339                                 return dch != null ? dch.Session : null;
 340                         }
 341                 }
 342
 343                 public EndpointAddress RemoteAddress {
 344                         get { return RequestChannel != null ? RequestChannel.RemoteAddress : OutputChannel.RemoteAddress; }
 345                 }
 346
 347                 public string SessionId {
 348                         get { return OutputSession != null ? OutputSession.Id : InputSession != null ? InputSession.Id : null; }
 349                 }
 350
 351                 #endregion
 352
 353                 // CommunicationObject
 354                 protected internal override TimeSpan DefaultOpenTimeout {
 355                         get { return default_open_timeout; }
 356                 }
 357
 358                 protected internal override TimeSpan DefaultCloseTimeout {
 359                         get { return default_close_timeout; }
 360                 }
 361
 362                 protected override void OnAbort ()
 363                 {
 364                         channel.Abort ();
 365                         if (factory != null) // ... is it valid?
 366                                 factory.Abort ();
 367                 }
 368
 369                 Action<TimeSpan> close_delegate;
 370
 371                 protected override IAsyncResult OnBeginClose (
 372                         TimeSpan timeout, AsyncCallback callback, object state)
 373                 {
 374                         if (close_delegate == null)
 375                                 close_delegate = new Action<TimeSpan> (OnClose);
 376                         return close_delegate.BeginInvoke (timeout, callback, state);
 377                 }
 378
 379                 protected override void OnEndClose (IAsyncResult result)
 380                 {
 381                         close_delegate.EndInvoke (result);
 382                 }
 383
 384                 protected override void OnClose (TimeSpan timeout)
 385                 {
 386                         DateTime start = DateTime.Now;
 387                         if (channel.State == CommunicationState.Opened)
 388                                 channel.Close (timeout);
 389                 }
 390
 391                 Action<TimeSpan> open_callback;
 392
 393                 protected override IAsyncResult OnBeginOpen (
 394                         TimeSpan timeout, AsyncCallback callback, object state)
 395                 {
 396                         if (open_callback == null)
 397                                 open_callback = new Action<TimeSpan> (OnOpen);
 398                         return open_callback.BeginInvoke (timeout, callback, state);
 399                 }
 400
 401                 protected override void OnEndOpen (IAsyncResult result)
 402                 {
 403                         if (open_callback == null)
 404                                 throw new InvalidOperationException ("Async open operation has not started");
 405                         open_callback.EndInvoke (result);
 406                 }
 407
 408                 protected override void OnOpen (TimeSpan timeout)
 409                 {
 410                         if (runtime.InteractiveChannelInitializers.Count > 0 && !DidInteractiveInitialization)
 411                                 throw new InvalidOperationException ("The client runtime is assigned interactive channel initializers, and in such case DisplayInitializationUI must be called before the channel is opened.");
 412                         if (channel.State == CommunicationState.Created)
 413                                 channel.Open (timeout);
 414                 }
 415
 416                 // IChannel
 417
 418                 IChannel OperationChannel {
 419                         get { return channel; }
 420                 }
 421
 422                 public T GetProperty<T> () where T : class
 423                 {
 424                         if (typeof (T) == typeof (MessageVersion))
 425                                 return (T) (object) message_version;
 426                         return OperationChannel.GetProperty<T> ();
 427                 }
 428
 429                 // IExtensibleObject<IContextChannel>
 430
 431                 IExtensionCollection<IContextChannel> extensions;
 432
 433                 public IExtensionCollection<IContextChannel> Extensions {
 434                         get {
 435                                 if (extensions == null)
 436                                         extensions = new ExtensionCollection<IContextChannel> (this);
 437                                 return extensions;
 438                         }
 439                 }
 440
 441                 #region Request/Output processing
 442
 443                 public IAsyncResult BeginProcess (MethodBase method, string operationName, object [] parameters, AsyncCallback callback, object asyncState)
 444                 {
 445                         var p = parameters;
 446                         var retval = _processDelegate.BeginInvoke (method, operationName, true, ref p, OperationContext.Current, callback, asyncState);
 447                         if (p != parameters)
 448                                 throw new InvalidOperationException ();
 449                         return retval;
 450                 }
 451
 452                 public object EndProcess (MethodBase method, string operationName, object [] parameters, IAsyncResult result)
 453                 {
 454                         if (result == null)
 455                                 throw new ArgumentNullException ("result");
 456                         if (parameters == null)
 457                                 throw new ArgumentNullException ("parameters");
 458
 459                         var pi = method.GetParameters ();
 460                         var countInParams = 0;
 461                         for (int i = 0; i < pi.Length; i++) {
 462                                 if (pi [i].IsIn)
 463                                         countInParams++;
 464                         }
 465
 466                         if (parameters.Length != countInParams)
 467                                 throw new InvalidOperationException ();
 468
 469                         object[] p = parameters;
 470                         var retval = _processDelegate.EndInvoke (ref p, result);
 471                         if (p == parameters)
 472                                 return retval;
 473
 474                         int pos = 0;
 475                         for (int i = 0; i < pi.Length; i++) {
 476                                 if (!pi [i].IsOut && !pi [i].ParameterType.IsByRef)
 477                                         continue;
 478                                 parameters [i] = p [pos++];
 479                         }
 480
 481                         if (pos != p.Length)
 482                                 throw new InvalidOperationException ();
 483
 484                         return retval;
 485                 }
 486
 487                 public object Process (MethodBase method, string operationName, object [] parameters, OperationContext context)
 488                 {
 489                         var p = parameters;
 490                         var retval = Process (method, operationName, false, ref p, context);
 491                         if (p != parameters)
 492                                 throw new InvalidOperationException ();
 493                         return retval;
 494                 }
 495
 496                 object Process (MethodBase method, string operationName, bool isAsync, ref object [] parameters, OperationContext context)
 497                 {
 498                         var previousContext = OperationContext.Current;
 499                         try {
 500                                 // Inherit the context from the calling thread
 501                                 OperationContext.Current = context;
 502
 503                                 return DoProcess (method, operationName, isAsync, ref parameters, context);
 504                         } catch (Exception ex) {
 505                                 throw;
 506                         } finally {
 507                                 // Reset the context before the thread goes back into the pool
 508                                 OperationContext.Current = previousContext;
 509                         }
 510                 }
 511
 512                 object DoProcess (MethodBase method, string operationName, bool isAsync, ref object [] parameters, OperationContext context)
 513                 {
 514                         if (AllowInitializationUI)
 515                                 DisplayInitializationUI ();
 516                         OperationDescription od = SelectOperation (method, operationName, parameters);
 517
 518                         if (State != CommunicationState.Opened)
 519                                 Open ();
 520
 521                         if (!od.IsOneWay)
 522                                 return Request (od, isAsync, ref parameters, context);
 523                         else {
 524                                 Output (od, parameters, context);
 525                                 return null;
 526                         }
 527                 }
 528
 529                 OperationDescription SelectOperation (MethodBase method, string operationName, object [] parameters)
 530                 {
 531                         string operation;
 532                         if (Runtime.OperationSelector != null)
 533                                 operation = Runtime.OperationSelector.SelectOperation (method, parameters);
 534                         else
 535                                 operation = operationName;
 536                         OperationDescription od = contract.Operations.Find (operation);
 537                         if (od == null)
 538                                 throw new Exception (String.Format ("OperationDescription for operation '{0}' was not found in its internally-generated contract.", operation));
 539                         return od;
 540                 }
 541
 542                 void Output (OperationDescription od, object [] parameters, OperationContext context)
 543                 {
 544                         ClientOperation op = runtime.Operations [od.Name];
 545                         Send (CreateRequest (op, parameters, context), OperationTimeout);
 546                 }
 547
 548                 object Request (OperationDescription od, bool isAsync, ref object [] parameters, OperationContext context)
 549                 {
 550                         ClientOperation op = runtime.Operations [od.Name];
 551                         object [] inspections = new object [runtime.MessageInspectors.Count];
 552                         Message req = CreateRequest (op, parameters, context);
 553
 554                         for (int i = 0; i < inspections.Length; i++)
 555                                 inspections [i] = runtime.MessageInspectors [i].BeforeSendRequest (ref req, this);
 556
 557                         Message res = Request (req, OperationTimeout);
 558                         if (res.IsFault) {
 559                                 var resb = res.CreateBufferedCopy (runtime.MaxFaultSize);
 560                                 MessageFault fault = MessageFault.CreateFault (resb.CreateMessage (), runtime.MaxFaultSize);
 561                                 var conv = OperationChannel.GetProperty<FaultConverter> () ?? FaultConverter.GetDefaultFaultConverter (res.Version);
 562                                 Exception ex;
 563                                 if (!conv.TryCreateException (resb.CreateMessage (), fault, out ex)) {
 564                                         if (fault.HasDetail) {
 565                                                 Type detailType = typeof (ExceptionDetail);
 566                                                 var freader = fault.GetReaderAtDetailContents ();
 567                                                 DataContractSerializer ds = null;
 568                                                 foreach (var fci in op.FaultContractInfos)
 569                                                         if (res.Headers.Action == fci.Action || fci.Serializer.IsStartObject (freader)) {
 570                                                                 detailType = fci.Detail;
 571                                                                 ds = fci.Serializer;
 572                                                                 break;
 573                                                         }
 574                                                 if (ds == null)
 575                                                         ds = new DataContractSerializer (detailType);
 576                                                 var detail = ds.ReadObject (freader);
 577                                                 ex = (Exception) Activator.CreateInstance (typeof (FaultException<>).MakeGenericType (detailType), new object [] {detail, fault.Reason, fault.Code, res.Headers.Action});
 578                                         }
 579
 580                                         if (ex == null)
 581                                                 ex = new FaultException (fault);
 582                                 }
 583                                 throw ex;
 584                         }
 585
 586                         for (int i = 0; i < inspections.Length; i++)
 587                                 runtime.MessageInspectors [i].AfterReceiveReply (ref res, inspections [i]);
 588
 589                         if (!op.DeserializeReply)
 590                                 return res;
 591
 592                         if (isAsync && od.EndMethod != null) {
 593                                 var endParams = od.EndMethod.GetParameters ();
 594                                 parameters = new object [endParams.Length - 1];
 595                         }
 596
 597                         return op.Formatter.DeserializeReply (res, parameters);
 598                 }
 599
 600                 #region Message-based Request() and Send()
 601                 // They are internal for ClientBase<T>.ChannelBase use.
 602                 internal Message Request (Message msg, TimeSpan timeout)
 603                 {
 604                         if (RequestChannel != null)
 605                                 return RequestChannel.Request (msg, timeout);
 606                         else
 607                                 return RequestCorrelated (msg, timeout, OutputChannel);
 608                 }
 609
 610                 internal virtual Message RequestCorrelated (Message msg, TimeSpan timeout, IOutputChannel channel)
 611                 {
 612                         // FIXME: implement ConcurrencyMode check:
 613                         // if it is .Single && this instance for a callback channel && the operation is invoked inside service operation, then error.
 614
 615                         DateTime startTime = DateTime.Now;
 616                         OutputChannel.Send (msg, timeout);
 617                         return ((IDuplexChannel) channel).Receive (timeout - (DateTime.Now - startTime));
 618                 }
 619
 620                 internal IAsyncResult BeginRequest (Message msg, TimeSpan timeout, AsyncCallback callback, object state)
 621                 {
 622                         return requestDelegate.BeginInvoke (msg, timeout, callback, state);
 623                 }
 624
 625                 internal Message EndRequest (IAsyncResult result)
 626                 {
 627                         return requestDelegate.EndInvoke (result);
 628                 }
 629
 630                 internal void Send (Message msg, TimeSpan timeout)
 631                 {
 632                         if (OutputChannel != null)
 633                                 OutputChannel.Send (msg, timeout);
 634                         else
 635                                 RequestChannel.Request (msg, timeout); // and ignore returned message.
 636                 }
 637
 638                 internal IAsyncResult BeginSend (Message msg, TimeSpan timeout, AsyncCallback callback, object state)
 639                 {
 640                         return sendDelegate.BeginInvoke (msg, timeout, callback, state);
 641                 }
 642
 643                 internal void EndSend (IAsyncResult result)
 644                 {
 645                         sendDelegate.EndInvoke (result);
 646                 }
 647                 #endregion
 648
 649                 Message CreateRequest (ClientOperation op, object [] parameters, OperationContext context)
 650                 {
 651                         MessageVersion version = message_version;
 652                         if (version == null)
 653                                 version = MessageVersion.Default;
 654
 655                         Message msg;
 656                         if (op.SerializeRequest)
 657                                 msg = op.Formatter.SerializeRequest (
 658                                         version, parameters);
 659                         else {
 660                                 if (parameters.Length != 1)
 661                                         throw new ArgumentException (String.Format ("Argument parameters does not match the expected input. It should contain only a Message, but has {0} parameters", parameters.Length));
 662                                 if (!(parameters [0] is Message))
 663                                         throw new ArgumentException (String.Format ("Argument should be only a Message, but has {0}", parameters [0] != null ? parameters [0].GetType ().FullName : "null"));
 664                                 msg = (Message) parameters [0];
 665                         }
 666
 667                         context = context ?? OperationContext.Current;
 668                         if (context != null) {
 669                                 // CopyHeadersFrom does not work here (brings duplicates -> error)
 670                                 foreach (var mh in context.OutgoingMessageHeaders) {
 671                                         int x = msg.Headers.FindHeader (mh.Name, mh.Namespace, mh.Actor);
 672                                         if (x >= 0)
 673                                                 msg.Headers.RemoveAt (x);
 674                                         msg.Headers.Add ((MessageHeader) mh);
 675                                 }
 676                                 msg.Properties.CopyProperties (context.OutgoingMessageProperties);
 677                         }
 678
 679                         // FIXME: disabling MessageId as it's not seen for bug #567672 case. But might be required for PeerDuplexChannel. Check it later.
 680                         //if (OutputSession != null)
 681                         //      msg.Headers.MessageId = new UniqueId (OutputSession.Id);
 682                         msg.Properties.AllowOutputBatching = AllowOutputBatching;
 683
 684                         if (msg.Version.Addressing.Equals (AddressingVersion.WSAddressing10)) {
 685                                 if (msg.Headers.MessageId == null)
 686                                         msg.Headers.MessageId = new UniqueId ();
 687                                 if (msg.Headers.ReplyTo == null)
 688                                         msg.Headers.ReplyTo = new EndpointAddress (Constants.WsaAnonymousUri);
 689                                 if (msg.Headers.To == null && RemoteAddress != null)
 690                                         msg.Headers.To = RemoteAddress.Uri;
 691                         }
 692
 693                         return msg;
 694                 }
 695
 696                 #endregion
 697         }
 698 }