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
  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                 }
  92
  93                 public ClientRuntimeChannel (ClientRuntime runtime, ContractDescription contract, TimeSpan openTimeout, TimeSpan closeTimeout, IChannel contextChannel, IChannelFactory factory, MessageVersion messageVersion, EndpointAddress remoteAddress, Uri via)
  94                 {
  95                         if (runtime == null)
  96                                 throw new ArgumentNullException ("runtime");
  97                         if (messageVersion == null)
  98                                 throw new ArgumentNullException ("messageVersion");
  99                         this.runtime = runtime;
 100                         this.remote_address = remoteAddress;
 101                         if (runtime.Via == null)
 102                                 runtime.Via = via ?? (remote_address != null ?remote_address.Uri : null);
 103                         this.contract = contract;
 104                         this.message_version = messageVersion;
 105                         default_open_timeout = openTimeout;
 106                         default_close_timeout = closeTimeout;
 107                         _processDelegate = new ProcessDelegate (Process);
 108                         requestDelegate = new RequestDelegate (Request);
 109                         sendDelegate = new SendDelegate (Send);
 110
 111                         // default values
 112                         AllowInitializationUI = true;
 113
 114                         if (contextChannel != null)
 115                                 channel = contextChannel;
 116                         else {
 117                                 var method = factory.GetType ().GetMethod ("CreateChannel", new Type [] {typeof (EndpointAddress), typeof (Uri)});
 118                                 try {
 119                                         channel = (IChannel) method.Invoke (factory, new object [] {remote_address, Via});
 120                                         this.factory = factory;
 121                                 } catch (TargetInvocationException ex) {
 122                                         if (ex.InnerException != null)
 123                                                 throw ex.InnerException;
 124                                         else
 125                                                 throw;
 126                                 }
 127                         }
 128                 }
 129
 130                 public ContractDescription Contract {
 131                         get { return contract; }
 132                 }
 133
 134                 public ClientRuntime Runtime {
 135                         get { return runtime; }
 136                 }
 137
 138                 IRequestChannel RequestChannel {
 139                         get { return channel as IRequestChannel; }
 140                 }
 141
 142                 IOutputChannel OutputChannel {
 143                         get { return channel as IOutputChannel; }
 144                 }
 145
 146                 internal IDuplexChannel DuplexChannel {
 147                         get { return channel as IDuplexChannel; }
 148                 }
 149
 150                 #region IClientChannel
 151
 152                 bool did_interactive_initialization;
 153
 154                 public bool AllowInitializationUI { get; set; }
 155
 156                 public bool DidInteractiveInitialization {
 157                         get { return did_interactive_initialization; }
 158                 }
 159
 160                 public Uri Via {
 161                         get { return runtime.Via; }
 162                 }
 163
 164                 class DelegatingWaitHandle : WaitHandle
 165                 {
 166                         public DelegatingWaitHandle (IAsyncResult [] results)
 167                         {
 168                                 this.results = results;
 169                         }
 170
 171                         IAsyncResult [] results;
 172
 173                         protected override void Dispose (bool disposing)
 174                         {
 175                                 if (disposing)
 176                                         foreach (var r in results)
 177                                                 r.AsyncWaitHandle.Close ();
 178                         }
 179
 180                         public override bool WaitOne ()
 181                         {
 182                                 foreach (var r in results)
 183                                         r.AsyncWaitHandle.WaitOne ();
 184                                 return true;
 185                         }
 186
 187                         public override bool WaitOne (int millisecondsTimeout)
 188                         {
 189                                 return WaitHandle.WaitAll (ResultWaitHandles, millisecondsTimeout);
 190                         }
 191
 192                         WaitHandle [] ResultWaitHandles {
 193                                 get {
 194                                         var arr = new WaitHandle [results.Length];
 195                                         for (int i = 0; i < arr.Length; i++)
 196                                                 arr [i] = results [i].AsyncWaitHandle;
 197                                         return arr;
 198                                 }
 199                         }
 200
 201                         public override bool WaitOne (int millisecondsTimeout, bool exitContext)
 202                         {
 203                                 return WaitHandle.WaitAll (ResultWaitHandles, millisecondsTimeout, exitContext);
 204                         }
 205
 206                         public override bool WaitOne (TimeSpan timeout, bool exitContext)
 207                         {
 208                                 return WaitHandle.WaitAll (ResultWaitHandles, timeout, exitContext);
 209                         }
 210                 }
 211
 212                 class DisplayUIAsyncResult : IAsyncResult
 213                 {
 214                         public DisplayUIAsyncResult (IAsyncResult [] results)
 215                         {
 216                                 this.results = results;
 217                         }
 218
 219                         IAsyncResult [] results;
 220
 221                         internal IAsyncResult [] Results {
 222                                 get { return results; }
 223                         }
 224
 225                         public object AsyncState {
 226                                 get { return null; }
 227                         }
 228
 229                         WaitHandle wait_handle;
 230
 231                         public WaitHandle AsyncWaitHandle {
 232                                 get {
 233                                         if (wait_handle == null)
 234                                                 wait_handle = new DelegatingWaitHandle (results);
 235                                         return wait_handle;
 236                                 }
 237                         }
 238
 239                         public bool CompletedSynchronously {
 240                                 get {
 241                                         foreach (var r in results)
 242                                                 if (!r.CompletedSynchronously)
 243                                                         return false;
 244                                         return true;
 245                                 }
 246                         }
 247                         public bool IsCompleted {
 248                                 get {
 249                                         foreach (var r in results)
 250                                                 if (!r.IsCompleted)
 251                                                         return false;
 252                                         return true;
 253                                 }
 254                         }
 255                 }
 256
 257                 public IAsyncResult BeginDisplayInitializationUI (
 258                         AsyncCallback callback, object state)
 259                 {
 260                         OnInitializationUI ();
 261                         IAsyncResult [] arr = new IAsyncResult [runtime.InteractiveChannelInitializers.Count];
 262                         int i = 0;
 263                         foreach (var init in runtime.InteractiveChannelInitializers)
 264                                 arr [i++] = init.BeginDisplayInitializationUI (this, callback, state);
 265                         return new DisplayUIAsyncResult (arr);
 266                 }
 267
 268                 public void EndDisplayInitializationUI (
 269                         IAsyncResult result)
 270                 {
 271                         DisplayUIAsyncResult r = (DisplayUIAsyncResult) result;
 272                         int i = 0;
 273                         foreach (var init in runtime.InteractiveChannelInitializers)
 274                                 init.EndDisplayInitializationUI (r.Results [i++]);
 275
 276                         did_interactive_initialization = true;
 277                 }
 278
 279                 public void DisplayInitializationUI ()
 280                 {
 281                         OnInitializationUI ();
 282                         foreach (var init in runtime.InteractiveChannelInitializers)
 283                                 init.EndDisplayInitializationUI (init.BeginDisplayInitializationUI (this, null, null));
 284
 285                         did_interactive_initialization = true;
 286                 }
 287
 288                 void OnInitializationUI ()
 289                 {
 290                         if (!AllowInitializationUI && runtime.InteractiveChannelInitializers.Count > 0)
 291                                 throw new InvalidOperationException ("AllowInitializationUI is set to false but the client runtime contains one or more InteractiveChannelInitializers.");
 292                 }
 293
 294                 public void Dispose ()
 295                 {
 296                         Close ();
 297                 }
 298
 299                 public event EventHandler<UnknownMessageReceivedEventArgs> UnknownMessageReceived;
 300
 301                 #endregion
 302
 303                 #region IContextChannel
 304
 305                 [MonoTODO]
 306                 public bool AllowOutputBatching { get; set; }
 307
 308                 public IInputSession InputSession {
 309                         get {
 310                                 ISessionChannel<IInputSession> ch = RequestChannel as ISessionChannel<IInputSession>;
 311                                 ch = ch ?? OutputChannel as ISessionChannel<IInputSession>;
 312                                 if (ch != null)
 313                                         return ch.Session;
 314                                 var dch = OutputChannel as ISessionChannel<IDuplexSession>;
 315                                 return dch != null ? dch.Session : null;
 316                         }
 317                 }
 318
 319                 public EndpointAddress LocalAddress {
 320                         get {
 321                                 var dc = OperationChannel as IDuplexChannel;
 322                                 return dc != null ? dc.LocalAddress : null;
 323                         }
 324                 }
 325
 326                 public TimeSpan OperationTimeout {
 327                         get {
 328                                 if (!this.operation_timeout.HasValue) {
 329                                         this.operation_timeout = DefaultCommunicationTimeouts.Instance.ReceiveTimeout;
 330                                 }
 331                                 return this.operation_timeout.Value;
 332                         }
 333                         set {
 334                                 this.operation_timeout = value;
 335                         }
 336                 }
 337
 338                 public IOutputSession OutputSession {
 339                         get {
 340                                 ISessionChannel<IOutputSession> ch = RequestChannel as ISessionChannel<IOutputSession>;
 341                                 ch = ch ?? OutputChannel as ISessionChannel<IOutputSession>;
 342                                 if (ch != null)
 343                                         return ch.Session;
 344                                 var dch = OutputChannel as ISessionChannel<IDuplexSession>;
 345                                 return dch != null ? dch.Session : null;
 346                         }
 347                 }
 348
 349                 public EndpointAddress RemoteAddress {
 350                         get { return RequestChannel != null ? RequestChannel.RemoteAddress : OutputChannel.RemoteAddress; }
 351                 }
 352
 353                 public string SessionId {
 354                         get { return OutputSession != null ? OutputSession.Id : InputSession != null ? InputSession.Id : null; }
 355                 }
 356
 357                 #endregion
 358
 359                 // CommunicationObject
 360                 protected internal override TimeSpan DefaultOpenTimeout {
 361                         get { return default_open_timeout; }
 362                 }
 363
 364                 protected internal override TimeSpan DefaultCloseTimeout {
 365                         get { return default_close_timeout; }
 366                 }
 367
 368                 protected override void OnAbort ()
 369                 {
 370                         channel.Abort ();
 371                         if (factory != null) // ... is it valid?
 372                                 factory.Abort ();
 373                 }
 374
 375                 Action<TimeSpan> close_delegate;
 376
 377                 protected override IAsyncResult OnBeginClose (
 378                         TimeSpan timeout, AsyncCallback callback, object state)
 379                 {
 380                         if (close_delegate == null)
 381                                 close_delegate = new Action<TimeSpan> (OnClose);
 382                         return close_delegate.BeginInvoke (timeout, callback, state);
 383                 }
 384
 385                 protected override void OnEndClose (IAsyncResult result)
 386                 {
 387                         close_delegate.EndInvoke (result);
 388                 }
 389
 390                 protected override void OnClose (TimeSpan timeout)
 391                 {
 392                         DateTime start = DateTime.Now;
 393                         if (channel.State == CommunicationState.Opened)
 394                                 channel.Close (timeout);
 395                 }
 396
 397                 Action<TimeSpan> open_callback;
 398
 399                 protected override IAsyncResult OnBeginOpen (
 400                         TimeSpan timeout, AsyncCallback callback, object state)
 401                 {
 402                         if (open_callback == null)
 403                                 open_callback = new Action<TimeSpan> (OnOpen);
 404                         return open_callback.BeginInvoke (timeout, callback, state);
 405                 }
 406
 407                 protected override void OnEndOpen (IAsyncResult result)
 408                 {
 409                         if (open_callback == null)
 410                                 throw new InvalidOperationException ("Async open operation has not started");
 411                         open_callback.EndInvoke (result);
 412                 }
 413
 414                 protected override void OnOpen (TimeSpan timeout)
 415                 {
 416                         if (runtime.InteractiveChannelInitializers.Count > 0 && !DidInteractiveInitialization)
 417                                 throw new InvalidOperationException ("The client runtime is assigned interactive channel initializers, and in such case DisplayInitializationUI must be called before the channel is opened.");
 418                         if (channel.State == CommunicationState.Created)
 419                                 channel.Open (timeout);
 420                 }
 421
 422                 // IChannel
 423
 424                 IChannel OperationChannel {
 425                         get { return channel; }
 426                 }
 427
 428                 public T GetProperty<T> () where T : class
 429                 {
 430                         if (typeof (T) == typeof (MessageVersion))
 431                                 return (T) (object) message_version;
 432                         return OperationChannel.GetProperty<T> ();
 433                 }
 434
 435                 // IExtensibleObject<IContextChannel>
 436
 437                 IExtensionCollection<IContextChannel> extensions;
 438
 439                 public IExtensionCollection<IContextChannel> Extensions {
 440                         get {
 441                                 if (extensions == null)
 442                                         extensions = new ExtensionCollection<IContextChannel> (this);
 443                                 return extensions;
 444                         }
 445                 }
 446
 447                 #region Request/Output processing
 448
 449                 public IAsyncResult BeginProcess (MethodBase method, string operationName, object [] parameters, AsyncCallback callback, object asyncState)
 450                 {
 451                         var p = parameters;
 452                         var retval = _processDelegate.BeginInvoke (method, operationName, true, ref p, OperationContext.Current, callback, asyncState);
 453                         if (p != parameters)
 454                                 throw new InvalidOperationException ();
 455                         return retval;
 456                 }
 457
 458                 public object EndProcess (MethodBase method, string operationName, object [] parameters, IAsyncResult result)
 459                 {
 460                         if (result == null)
 461                                 throw new ArgumentNullException ("result");
 462                         if (parameters == null)
 463                                 throw new ArgumentNullException ("parameters");
 464
 465                         object[] p = parameters;
 466                         var retval = _processDelegate.EndInvoke (ref p, result);
 467                         if (p == parameters)
 468                                 return retval;
 469
 470                         if (p.Length != parameters.Length)
 471                                 throw new InvalidOperationException ();
 472                         Array.Copy (p, parameters, p.Length);
 473                         return retval;
 474                 }
 475
 476                 public object Process (MethodBase method, string operationName, object [] parameters, OperationContext context)
 477                 {
 478                         var p = parameters;
 479                         var retval = Process (method, operationName, false, ref p, context);
 480                         if (p != parameters)
 481                                 throw new InvalidOperationException ();
 482                         return retval;
 483                 }
 484
 485                 object Process (MethodBase method, string operationName, bool isAsync, ref object [] parameters, OperationContext context)
 486                 {
 487                         var previousContext = OperationContext.Current;
 488                         try {
 489                                 // Inherit the context from the calling thread
 490                                 OperationContext.Current = context;
 491
 492                                 return DoProcess (method, operationName, isAsync, ref parameters, context);
 493                         } catch (Exception ex) {
 494                                 throw;
 495                         } finally {
 496                                 // Reset the context before the thread goes back into the pool
 497                                 OperationContext.Current = previousContext;
 498                         }
 499                 }
 500
 501                 object DoProcess (MethodBase method, string operationName, bool isAsync, ref object [] parameters, OperationContext context)
 502                 {
 503                         if (AllowInitializationUI)
 504                                 DisplayInitializationUI ();
 505                         OperationDescription od = SelectOperation (method, operationName, parameters);
 506
 507                         if (State != CommunicationState.Opened)
 508                                 Open ();
 509
 510                         if (!od.IsOneWay)
 511                                 return Request (od, isAsync, ref parameters, context);
 512                         else {
 513                                 Output (od, parameters, context);
 514                                 return null;
 515                         }
 516                 }
 517
 518                 OperationDescription SelectOperation (MethodBase method, string operationName, object [] parameters)
 519                 {
 520                         string operation;
 521                         if (Runtime.OperationSelector != null)
 522                                 operation = Runtime.OperationSelector.SelectOperation (method, parameters);
 523                         else
 524                                 operation = operationName;
 525                         OperationDescription od = contract.Operations.Find (operation);
 526                         if (od == null)
 527                                 throw new Exception (String.Format ("OperationDescription for operation '{0}' was not found in its internally-generated contract.", operation));
 528                         return od;
 529                 }
 530
 531                 void Output (OperationDescription od, object [] parameters, OperationContext context)
 532                 {
 533                         ClientOperation op = runtime.Operations [od.Name];
 534                         Send (CreateRequest (op, parameters, context), OperationTimeout);
 535                 }
 536
 537                 object Request (OperationDescription od, bool isAsync, ref object [] parameters, OperationContext context)
 538                 {
 539                         ClientOperation op = runtime.Operations [od.Name];
 540                         object [] inspections = new object [runtime.MessageInspectors.Count];
 541                         Message req = CreateRequest (op, parameters, context);
 542
 543                         for (int i = 0; i < inspections.Length; i++)
 544                                 inspections [i] = runtime.MessageInspectors [i].BeforeSendRequest (ref req, this);
 545
 546                         Message res = Request (req, OperationTimeout);
 547                         if (res.IsFault) {
 548                                 var resb = res.CreateBufferedCopy (runtime.MaxFaultSize);
 549                                 MessageFault fault = MessageFault.CreateFault (resb.CreateMessage (), runtime.MaxFaultSize);
 550                                 var conv = OperationChannel.GetProperty<FaultConverter> () ?? FaultConverter.GetDefaultFaultConverter (res.Version);
 551                                 Exception ex;
 552                                 if (!conv.TryCreateException (resb.CreateMessage (), fault, out ex)) {
 553                                         if (fault.HasDetail) {
 554                                                 Type detailType = typeof (ExceptionDetail);
 555                                                 var freader = fault.GetReaderAtDetailContents ();
 556                                                 DataContractSerializer ds = null;
 557                                                 foreach (var fci in op.FaultContractInfos)
 558                                                         if (res.Headers.Action == fci.Action || fci.Serializer.IsStartObject (freader)) {
 559                                                                 detailType = fci.Detail;
 560                                                                 ds = fci.Serializer;
 561                                                                 break;
 562                                                         }
 563                                                 if (ds == null)
 564                                                         ds = new DataContractSerializer (detailType);
 565                                                 var detail = ds.ReadObject (freader);
 566                                                 ex = (Exception) Activator.CreateInstance (typeof (FaultException<>).MakeGenericType (detailType), new object [] {detail, fault.Reason, fault.Code, res.Headers.Action});
 567                                         }
 568
 569                                         if (ex == null)
 570                                                 ex = new FaultException (fault);
 571                                 }
 572                                 throw ex;
 573                         }
 574
 575                         for (int i = 0; i < inspections.Length; i++)
 576                                 runtime.MessageInspectors [i].AfterReceiveReply (ref res, inspections [i]);
 577
 578                         if (!op.DeserializeReply)
 579                                 return res;
 580
 581                         if (isAsync && od.EndMethod != null) {
 582                                 var endParams = od.EndMethod.GetParameters ();
 583                                 parameters = new object [endParams.Length - 1];
 584                         }
 585
 586                         return op.Formatter.DeserializeReply (res, parameters);
 587                 }
 588
 589                 #region Message-based Request() and Send()
 590                 // They are internal for ClientBase<T>.ChannelBase use.
 591                 internal Message Request (Message msg, TimeSpan timeout)
 592                 {
 593                         if (RequestChannel != null)
 594                                 return RequestChannel.Request (msg, timeout);
 595                         else
 596                                 return RequestCorrelated (msg, timeout, OutputChannel);
 597                 }
 598
 599                 internal virtual Message RequestCorrelated (Message msg, TimeSpan timeout, IOutputChannel channel)
 600                 {
 601                         // FIXME: implement ConcurrencyMode check:
 602                         // if it is .Single && this instance for a callback channel && the operation is invoked inside service operation, then error.
 603
 604                         DateTime startTime = DateTime.Now;
 605                         OutputChannel.Send (msg, timeout);
 606                         return ((IDuplexChannel) channel).Receive (timeout - (DateTime.Now - startTime));
 607                 }
 608
 609                 internal IAsyncResult BeginRequest (Message msg, TimeSpan timeout, AsyncCallback callback, object state)
 610                 {
 611                         return requestDelegate.BeginInvoke (msg, timeout, callback, state);
 612                 }
 613
 614                 internal Message EndRequest (IAsyncResult result)
 615                 {
 616                         return requestDelegate.EndInvoke (result);
 617                 }
 618
 619                 internal void Send (Message msg, TimeSpan timeout)
 620                 {
 621                         if (OutputChannel != null)
 622                                 OutputChannel.Send (msg, timeout);
 623                         else
 624                                 RequestChannel.Request (msg, timeout); // and ignore returned message.
 625                 }
 626
 627                 internal IAsyncResult BeginSend (Message msg, TimeSpan timeout, AsyncCallback callback, object state)
 628                 {
 629                         return sendDelegate.BeginInvoke (msg, timeout, callback, state);
 630                 }
 631
 632                 internal void EndSend (IAsyncResult result)
 633                 {
 634                         sendDelegate.EndInvoke (result);
 635                 }
 636                 #endregion
 637
 638                 Message CreateRequest (ClientOperation op, object [] parameters, OperationContext context)
 639                 {
 640                         MessageVersion version = message_version;
 641                         if (version == null)
 642                                 version = MessageVersion.Default;
 643
 644                         Message msg;
 645                         if (op.SerializeRequest)
 646                                 msg = op.Formatter.SerializeRequest (
 647                                         version, parameters);
 648                         else {
 649                                 if (parameters.Length != 1)
 650                                         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));
 651                                 if (!(parameters [0] is Message))
 652                                         throw new ArgumentException (String.Format ("Argument should be only a Message, but has {0}", parameters [0] != null ? parameters [0].GetType ().FullName : "null"));
 653                                 msg = (Message) parameters [0];
 654                         }
 655
 656                         context = context ?? OperationContext.Current;
 657                         if (context != null) {
 658                                 // CopyHeadersFrom does not work here (brings duplicates -> error)
 659                                 foreach (var mh in context.OutgoingMessageHeaders) {
 660                                         int x = msg.Headers.FindHeader (mh.Name, mh.Namespace, mh.Actor);
 661                                         if (x >= 0)
 662                                                 msg.Headers.RemoveAt (x);
 663                                         msg.Headers.Add ((MessageHeader) mh);
 664                                 }
 665                                 msg.Properties.CopyProperties (context.OutgoingMessageProperties);
 666                         }
 667
 668                         // FIXME: disabling MessageId as it's not seen for bug #567672 case. But might be required for PeerDuplexChannel. Check it later.
 669                         //if (OutputSession != null)
 670                         //      msg.Headers.MessageId = new UniqueId (OutputSession.Id);
 671                         msg.Properties.AllowOutputBatching = AllowOutputBatching;
 672
 673                         if (msg.Version.Addressing.Equals (AddressingVersion.WSAddressing10)) {
 674                                 if (msg.Headers.MessageId == null)
 675                                         msg.Headers.MessageId = new UniqueId ();
 676                                 if (msg.Headers.ReplyTo == null)
 677                                         msg.Headers.ReplyTo = new EndpointAddress (Constants.WsaAnonymousUri);
 678                                 if (msg.Headers.To == null && RemoteAddress != null)
 679                                         msg.Headers.To = RemoteAddress.Uri;
 680                         }
 681
 682                         return msg;
 683                 }
 684
 685                 #endregion
 686         }
 687 }