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