| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | using System.Collections.Generic; |
| | | 6 | | using System.Diagnostics; |
| | | 7 | | using System.Threading.Tasks; |
| | | 8 | | using CoreWCF.Configuration; |
| | | 9 | | using CoreWCF.Dispatcher; |
| | | 10 | | using CoreWCF.Runtime; |
| | | 11 | | using static CoreWCF.Security.SecuritySessionServerSettings; |
| | | 12 | | |
| | | 13 | | namespace CoreWCF.Channels |
| | | 14 | | { |
| | | 15 | | internal class ChannelDemuxer |
| | | 16 | | { |
| | | 17 | | public static readonly TimeSpan UseDefaultReceiveTimeout = TimeSpan.MinValue; |
| | | 18 | | //private TypedChannelDemuxer _inputDemuxer; |
| | | 19 | | private TypedChannelDemuxer _replyDemuxer; |
| | | 20 | | private Dictionary<Type, TypedChannelDemuxer> _typeDemuxers; |
| | | 21 | | private object _thisLock = new object(); // Used to protect acces to _typedDemuxers and _replyDemuxer |
| | | 22 | | |
| | | 23 | | private TimeSpan _peekTimeout; |
| | | 24 | | |
| | | 25 | | public ChannelDemuxer() |
| | | 26 | | { |
| | | 27 | | _peekTimeout = UseDefaultReceiveTimeout; //use the default receive timeout (original behavior) |
| | | 28 | | MaxPendingSessions = 10; |
| | | 29 | | _typeDemuxers = new Dictionary<Type, TypedChannelDemuxer>(); |
| | | 30 | | } |
| | | 31 | | |
| | | 32 | | public TimeSpan PeekTimeout |
| | | 33 | | { |
| | | 34 | | get |
| | | 35 | | { |
| | | 36 | | return _peekTimeout; |
| | | 37 | | } |
| | | 38 | | set |
| | | 39 | | { |
| | | 40 | | _peekTimeout = value; |
| | | 41 | | } |
| | | 42 | | } |
| | | 43 | | |
| | | 44 | | public int MaxPendingSessions { get; set; } |
| | | 45 | | |
| | | 46 | | internal IServiceDispatcher CreateServiceDispatcher<TChannel>(IServiceDispatcher innerDispatcher, ChannelDemuxer |
| | | 47 | | { |
| | | 48 | | return GetTypedServiceDispatcher<TChannel>(bindingParameters).AddDispatcher(innerDispatcher, filter); |
| | | 49 | | } |
| | | 50 | | |
| | | 51 | | internal IServiceDispatcher CreateServiceDispatcher<TChannel>(IServiceDispatcher innerDispatcher, BindingParamet |
| | | 52 | | { |
| | | 53 | | return GetTypedServiceDispatcher<TChannel>(bindingParameters).AddDispatcher(innerDispatcher, new ChannelDemu |
| | | 54 | | } |
| | | 55 | | |
| | | 56 | | internal void RemoveServiceDispatcher<TChannel>(MessageFilter filter, BindingParameterCollection bindingParamete |
| | | 57 | | { |
| | | 58 | | // Don't create if it doesn't already exist as the filter can't be held by a non-existent demuxer |
| | | 59 | | TryGetTypedServiceDispatcher(typeof(TChannel), bindingParameters)?.RemoveDispatcher(filter); |
| | | 60 | | } |
| | | 61 | | |
| | | 62 | | internal TypedChannelDemuxer GetTypedServiceDispatcher<TChannel>(BindingParameterCollection bindingParameters) |
| | | 63 | | { |
| | | 64 | | return GetTypedServiceDispatcher(typeof(TChannel), bindingParameters); |
| | | 65 | | } |
| | | 66 | | |
| | | 67 | | internal TypedChannelDemuxer TryGetTypedServiceDispatcher(Type channelType, BindingParameterCollection bindingPa |
| | | 68 | | { |
| | | 69 | | TypedChannelDemuxer typeDemuxer = null; |
| | | 70 | | |
| | | 71 | | //if (typeof(TChannel) == typeof(IInputChannel)) |
| | | 72 | | //{ |
| | | 73 | | // if (this.inputDemuxer == null) |
| | | 74 | | // { |
| | | 75 | | // if (context.CanBuildInnerChannelListener<IReplyChannel>()) |
| | | 76 | | // this.inputDemuxer = this.replyDemuxer = new ReplyChannelDemuxer(context); |
| | | 77 | | // else |
| | | 78 | | // this.inputDemuxer = new InputChannelDemuxer(context); |
| | | 79 | | // createdDemuxer = true; |
| | | 80 | | // } |
| | | 81 | | // typeDemuxer = this.inputDemuxer; |
| | | 82 | | //} |
| | | 83 | | //else |
| | | 84 | | Type parentType = GetParentType(channelType); |
| | | 85 | | if (parentType == typeof(IReplyChannel)) |
| | | 86 | | { |
| | | 87 | | typeDemuxer = _replyDemuxer; |
| | | 88 | | } |
| | | 89 | | else |
| | | 90 | | { |
| | | 91 | | lock (_thisLock) |
| | | 92 | | { |
| | | 93 | | if (!_typeDemuxers.TryGetValue(parentType, out typeDemuxer)) |
| | | 94 | | { |
| | | 95 | | typeDemuxer = null; // When not found, technically typeDemuxer will be undefined |
| | | 96 | | } |
| | | 97 | | } |
| | | 98 | | } |
| | | 99 | | |
| | | 100 | | //if (!createdDemuxer) |
| | | 101 | | //{ |
| | | 102 | | // context.RemainingBindingElements.Clear(); |
| | | 103 | | //} |
| | | 104 | | |
| | | 105 | | return typeDemuxer; |
| | | 106 | | } |
| | | 107 | | |
| | | 108 | | internal TypedChannelDemuxer GetTypedServiceDispatcher(Type channelType, BindingParameterCollection bindingParam |
| | | 109 | | { |
| | | 110 | | TypedChannelDemuxer typeDemuxer = null; |
| | | 111 | | |
| | | 112 | | //if (typeof(TChannel) == typeof(IInputChannel)) |
| | | 113 | | //{ |
| | | 114 | | // if (this.inputDemuxer == null) |
| | | 115 | | // { |
| | | 116 | | // if (context.CanBuildInnerChannelListener<IReplyChannel>()) |
| | | 117 | | // this.inputDemuxer = this.replyDemuxer = new ReplyChannelDemuxer(context); |
| | | 118 | | // else |
| | | 119 | | // this.inputDemuxer = new InputChannelDemuxer(context); |
| | | 120 | | // createdDemuxer = true; |
| | | 121 | | // } |
| | | 122 | | // typeDemuxer = this.inputDemuxer; |
| | | 123 | | //} |
| | | 124 | | //else |
| | | 125 | | Type parentType = GetParentType(channelType); |
| | | 126 | | if (parentType == typeof(IReplyChannel)) |
| | | 127 | | { |
| | | 128 | | if (_replyDemuxer == null) |
| | | 129 | | { |
| | | 130 | | lock (_thisLock) |
| | | 131 | | { |
| | | 132 | | if (_replyDemuxer == null) |
| | | 133 | | { |
| | | 134 | | _replyDemuxer = new ReplyChannelDemuxer(bindingParameters); |
| | | 135 | | } |
| | | 136 | | } |
| | | 137 | | } |
| | | 138 | | |
| | | 139 | | typeDemuxer = _replyDemuxer; |
| | | 140 | | } |
| | | 141 | | else |
| | | 142 | | { |
| | | 143 | | lock (_thisLock) |
| | | 144 | | { |
| | | 145 | | if (!_typeDemuxers.TryGetValue(parentType, out typeDemuxer)) |
| | | 146 | | { |
| | | 147 | | typeDemuxer = CreateTypedDemuxer(channelType, bindingParameters); |
| | | 148 | | _typeDemuxers.Add(channelType, typeDemuxer); |
| | | 149 | | } |
| | | 150 | | } |
| | | 151 | | } |
| | | 152 | | |
| | | 153 | | //if (!createdDemuxer) |
| | | 154 | | //{ |
| | | 155 | | // context.RemainingBindingElements.Clear(); |
| | | 156 | | //} |
| | | 157 | | |
| | | 158 | | return typeDemuxer; |
| | | 159 | | } |
| | | 160 | | |
| | | 161 | | private TypedChannelDemuxer CreateTypedDemuxer(Type channelType, BindingParameterCollection bindingParameters) |
| | | 162 | | { |
| | | 163 | | /* if (channelType == typeof(IDuplexChannel)) |
| | | 164 | | return (TypedChannelDemuxer)(object)new DuplexChannelDemuxer(context); |
| | | 165 | | if (channelType == typeof(IInputSessionChannel)) |
| | | 166 | | return (TypedChannelDemuxer)(object)new InputSessionChannelDemuxer(context, this.peekTimeout, this.maxP |
| | | 167 | | if (channelType == typeof(IReplySessionChannel)) |
| | | 168 | | return (TypedChannelDemuxer)(object)new ReplySessionChannelDemuxer(context, this.peekTimeout, this.maxP |
| | | 169 | | if (channelType == typeof(IDuplexSessionChannel)) |
| | | 170 | | return (TypedChannelDemuxer)(object)new DuplexSessionChannelDemuxer(bindingParameters);//, this.peekTime |
| | | 171 | | throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException()); |
| | | 172 | | } |
| | | 173 | | |
| | | 174 | | private Type GetParentType(Type originalType) |
| | | 175 | | { |
| | | 176 | | if (typeof(IDuplexSessionChannel).IsAssignableFrom(originalType)) |
| | | 177 | | return typeof(IDuplexSessionChannel); |
| | | 178 | | if (typeof(IReplyChannel).IsAssignableFrom(originalType)) |
| | | 179 | | return typeof(IReplyChannel); |
| | | 180 | | throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException()); |
| | | 181 | | } |
| | | 182 | | } |
| | | 183 | | |
| | | 184 | | internal abstract class TypedChannelDemuxer : IServiceDispatcher |
| | | 185 | | { |
| | | 186 | | public abstract Uri BaseAddress { get; } |
| | | 187 | | public abstract Binding Binding { get; } |
| | | 188 | | public abstract IList<Type> SupportedChannelTypes { get; } |
| | | 189 | | |
| | | 190 | | public ServiceHostBase Host => throw new NotImplementedException(); |
| | | 191 | | |
| | | 192 | | public abstract Task<IServiceChannelDispatcher> CreateServiceChannelDispatcherAsync(IChannel channel); |
| | | 193 | | |
| | | 194 | | public abstract IServiceDispatcher AddDispatcher(IServiceDispatcher innerDispatcher, ChannelDemuxerFilter filter |
| | | 195 | | |
| | | 196 | | public abstract void RemoveDispatcher(MessageFilter filter); |
| | | 197 | | internal static void AbortMessage(RequestContext request) |
| | | 198 | | { |
| | | 199 | | // RequestContext.RequestMessage can throw an AddressMismatch exception. |
| | | 200 | | try |
| | | 201 | | { |
| | | 202 | | AbortMessage(request.RequestMessage); |
| | | 203 | | } |
| | | 204 | | catch (Exception e) |
| | | 205 | | { |
| | | 206 | | if (Fx.IsFatal(e)) |
| | | 207 | | { |
| | | 208 | | throw; |
| | | 209 | | } |
| | | 210 | | |
| | | 211 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | | 212 | | } |
| | | 213 | | } |
| | | 214 | | |
| | | 215 | | internal static void AbortMessage(Message message) |
| | | 216 | | { |
| | | 217 | | try |
| | | 218 | | { |
| | | 219 | | message.Close(); |
| | | 220 | | } |
| | | 221 | | catch (CommunicationException e) |
| | | 222 | | { |
| | | 223 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | | 224 | | } |
| | | 225 | | catch (TimeoutException e) |
| | | 226 | | { |
| | | 227 | | //if (TD.CloseTimeoutIsEnabled()) |
| | | 228 | | //{ |
| | | 229 | | // TD.CloseTimeout(e.Message); |
| | | 230 | | //} |
| | | 231 | | |
| | | 232 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | | 233 | | } |
| | | 234 | | } |
| | | 235 | | } |
| | | 236 | | |
| | | 237 | | // |
| | | 238 | | // Session demuxers |
| | | 239 | | // |
| | | 240 | | |
| | | 241 | | internal abstract class SessionChannelDemuxer<TInnerChannel, TInnerItem> : TypedChannelDemuxer |
| | | 242 | | where TInnerChannel : class, IChannel |
| | | 243 | | where TInnerItem : class, IDisposable |
| | | 244 | | { |
| | | 245 | | private readonly MessageFilterTable<IServiceDispatcher> _filterTable; |
| | | 246 | | public SessionChannelDemuxer(BindingParameterCollection bindingParameters)//, TimeSpan peekTimeout, int maxPendi |
| | | 247 | | { |
| | | 248 | | _filterTable = new MessageFilterTable<IServiceDispatcher>(); |
| | | 249 | | DemuxFailureHandler = bindingParameters.Find<IChannelDemuxFailureHandler>(); |
| | | 250 | | } |
| | | 251 | | |
| | | 252 | | protected object ThisLock |
| | | 253 | | { |
| | | 254 | | get { return this; } |
| | | 255 | | } |
| | | 256 | | |
| | | 257 | | protected IChannelDemuxFailureHandler DemuxFailureHandler { get; } |
| | | 258 | | |
| | | 259 | | public override IServiceDispatcher AddDispatcher(IServiceDispatcher innerDispatcher, ChannelDemuxerFilter filter |
| | | 260 | | { |
| | | 261 | | lock (ThisLock) |
| | | 262 | | { |
| | | 263 | | _filterTable.Add(filter.Filter, innerDispatcher, filter.Priority); |
| | | 264 | | } |
| | | 265 | | |
| | | 266 | | return this; |
| | | 267 | | } |
| | | 268 | | |
| | | 269 | | public override void RemoveDispatcher(MessageFilter filter) |
| | | 270 | | { |
| | | 271 | | lock (ThisLock) |
| | | 272 | | { |
| | | 273 | | _filterTable.Remove(filter); |
| | | 274 | | } |
| | | 275 | | } |
| | | 276 | | |
| | | 277 | | protected abstract void AbortItem(TInnerItem item); |
| | | 278 | | protected abstract Task EndpointNotFoundAsync(TInnerChannel channel, TInnerItem item); |
| | | 279 | | protected abstract Message GetMessage(TInnerItem item); |
| | | 280 | | |
| | | 281 | | protected IServiceDispatcher MatchDispatcher(Message message) |
| | | 282 | | { |
| | | 283 | | IServiceDispatcher matchingDispatcher = null; |
| | | 284 | | lock (ThisLock) |
| | | 285 | | { |
| | | 286 | | if (_filterTable.GetMatchingValue(message, out matchingDispatcher)) |
| | | 287 | | { |
| | | 288 | | return matchingDispatcher; |
| | | 289 | | } |
| | | 290 | | } |
| | | 291 | | |
| | | 292 | | return null; |
| | | 293 | | } |
| | | 294 | | } |
| | | 295 | | |
| | | 296 | | internal class DuplexSessionChannelDemuxer : SessionChannelDemuxer<IDuplexSessionChannel, Message> |
| | | 297 | | { |
| | | 298 | | public DuplexSessionChannelDemuxer(BindingParameterCollection bindingParameters)//, TimeSpan peekTimeout, int ma |
| | 3 | 299 | | : base(bindingParameters)//, peekTimeout, maxPendingSessions) |
| | | 300 | | { |
| | 3 | 301 | | } |
| | | 302 | | |
| | 0 | 303 | | public override Uri BaseAddress => throw new NotImplementedException(); |
| | | 304 | | |
| | 0 | 305 | | public override Binding Binding => throw new NotImplementedException(); |
| | | 306 | | |
| | 0 | 307 | | public override IList<Type> SupportedChannelTypes => throw new NotImplementedException(); |
| | | 308 | | |
| | | 309 | | public override Task<IServiceChannelDispatcher> CreateServiceChannelDispatcherAsync(IChannel channel) |
| | | 310 | | { |
| | 5 | 311 | | return Task.FromResult<IServiceChannelDispatcher>(new DuplexSessionChannelDispatcher(this, (IDuplexSessionCh |
| | | 312 | | } |
| | | 313 | | |
| | | 314 | | protected override void AbortItem(Message message) |
| | | 315 | | { |
| | 0 | 316 | | AbortMessage(message); |
| | 0 | 317 | | } |
| | | 318 | | |
| | | 319 | | protected override async Task EndpointNotFoundAsync(IDuplexSessionChannel channel, Message message) |
| | | 320 | | { |
| | 0 | 321 | | bool abortItem = true; |
| | | 322 | | try |
| | | 323 | | { |
| | 0 | 324 | | if (DemuxFailureHandler != null) |
| | | 325 | | { |
| | 0 | 326 | | var duplexSessionRequestContext = new DuplexSessionRequestContext(channel, message); |
| | 0 | 327 | | await DemuxFailureHandler.HandleDemuxFailureAsync(message, duplexSessionRequestContext); |
| | 0 | 328 | | abortItem = false; |
| | | 329 | | } |
| | | 330 | | |
| | 0 | 331 | | } |
| | | 332 | | catch (CommunicationException e) |
| | | 333 | | { |
| | 0 | 334 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | 0 | 335 | | } |
| | | 336 | | catch (TimeoutException e) |
| | | 337 | | { |
| | 0 | 338 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | 0 | 339 | | } |
| | | 340 | | catch (ObjectDisposedException e) |
| | | 341 | | { |
| | 0 | 342 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | 0 | 343 | | } |
| | | 344 | | catch (Exception e) |
| | | 345 | | { |
| | 0 | 346 | | if (Fx.IsFatal(e)) throw; |
| | | 347 | | throw; |
| | | 348 | | } |
| | | 349 | | finally |
| | | 350 | | { |
| | 0 | 351 | | if (abortItem) |
| | | 352 | | { |
| | 0 | 353 | | AbortMessage(message); |
| | 0 | 354 | | channel.Abort(); |
| | | 355 | | } |
| | | 356 | | } |
| | 0 | 357 | | } |
| | | 358 | | |
| | | 359 | | protected override Message GetMessage(Message message) |
| | | 360 | | { |
| | 0 | 361 | | return message; |
| | | 362 | | } |
| | | 363 | | |
| | | 364 | | internal class DuplexSessionChannelDispatcher : IServiceChannelDispatcher |
| | | 365 | | { |
| | | 366 | | private readonly DuplexSessionChannelDemuxer _demuxer; |
| | | 367 | | private readonly IDuplexSessionChannel _channel; |
| | | 368 | | private IServiceChannelDispatcher _serviceChannelDispatcher; |
| | | 369 | | |
| | 5 | 370 | | public DuplexSessionChannelDispatcher(DuplexSessionChannelDemuxer replyChannelDemuxer, IDuplexSessionChannel |
| | | 371 | | { |
| | 5 | 372 | | _demuxer = replyChannelDemuxer; |
| | 5 | 373 | | _channel = channel; |
| | 5 | 374 | | channel.OpenAsync(); |
| | 5 | 375 | | } |
| | | 376 | | |
| | | 377 | | public Task DispatchAsync(RequestContext context) |
| | | 378 | | { |
| | 0 | 379 | | return Task.FromException(new NotImplementedException()); |
| | | 380 | | } |
| | | 381 | | |
| | | 382 | | public async Task DispatchAsync(Message message) |
| | | 383 | | { |
| | 9 | 384 | | if (message == null) //0 bytes |
| | | 385 | | { |
| | | 386 | | //We have already closed all channels, return. (Couldn't use DoneReceivingInCurrentState()) |
| | 2 | 387 | | if (_channel.State == CommunicationState.Closed |
| | 2 | 388 | | || _channel.State == CommunicationState.Closing |
| | 2 | 389 | | || _channel.State == CommunicationState.Closed) |
| | | 390 | | { |
| | 0 | 391 | | return; |
| | | 392 | | } |
| | | 393 | | else |
| | | 394 | | { |
| | 2 | 395 | | await _serviceChannelDispatcher.DispatchAsync(message); |
| | 2 | 396 | | return; |
| | | 397 | | } |
| | | 398 | | } |
| | 7 | 399 | | IServiceDispatcher serviceDispatcher = _demuxer.MatchDispatcher(message); |
| | 7 | 400 | | if (serviceDispatcher == null) |
| | | 401 | | { |
| | 0 | 402 | | ErrorBehavior.ThrowAndCatch( |
| | 0 | 403 | | new EndpointNotFoundException(SR.Format(SR.UnableToDemuxChannel, message.Headers.Action)), messa |
| | 0 | 404 | | await _demuxer.EndpointNotFoundAsync((IDuplexSessionChannel) _channel, message); |
| | 0 | 405 | | return; |
| | | 406 | | } |
| | 7 | 407 | | _serviceChannelDispatcher = await serviceDispatcher.CreateServiceChannelDispatcherAsync(_channel); |
| | 7 | 408 | | await _serviceChannelDispatcher.DispatchAsync(message); |
| | 9 | 409 | | } |
| | | 410 | | } |
| | | 411 | | |
| | | 412 | | } |
| | | 413 | | |
| | | 414 | | // |
| | | 415 | | // Datagram demuxers |
| | | 416 | | // |
| | | 417 | | |
| | | 418 | | internal abstract class DatagramChannelDemuxer<TInnerChannel, TInnerItem> : TypedChannelDemuxer |
| | | 419 | | where TInnerChannel : class, IChannel |
| | | 420 | | where TInnerItem : class, IDisposable |
| | | 421 | | { |
| | | 422 | | private readonly MessageFilterTable<IServiceDispatcher> _filterTable; |
| | | 423 | | |
| | | 424 | | // since the OnOuterListenerOpen method will be called for every outer listener and we will open |
| | | 425 | | // the inner listener only once, we need to ensure that all the outer listeners wait till the |
| | | 426 | | // inner listener is opened. |
| | | 427 | | public DatagramChannelDemuxer(BindingParameterCollection bindingParameters) |
| | | 428 | | { |
| | | 429 | | _filterTable = new MessageFilterTable<IServiceDispatcher>(); |
| | | 430 | | DemuxFailureHandler = bindingParameters.Find<IChannelDemuxFailureHandler>(); |
| | | 431 | | } |
| | | 432 | | |
| | | 433 | | protected TInnerChannel InnerChannel { get; } |
| | | 434 | | |
| | | 435 | | protected IServiceDispatcher InnerDispatcher { get; } |
| | | 436 | | |
| | | 437 | | protected object ThisLock |
| | | 438 | | { |
| | | 439 | | get { return this; } |
| | | 440 | | } |
| | | 441 | | |
| | | 442 | | protected IChannelDemuxFailureHandler DemuxFailureHandler { get; } |
| | | 443 | | |
| | | 444 | | public override IServiceDispatcher AddDispatcher(IServiceDispatcher innerDispatcher, ChannelDemuxerFilter filter |
| | | 445 | | { |
| | | 446 | | lock (ThisLock) |
| | | 447 | | { |
| | | 448 | | _filterTable.Add(filter.Filter, innerDispatcher, filter.Priority); |
| | | 449 | | } |
| | | 450 | | |
| | | 451 | | return this; |
| | | 452 | | } |
| | | 453 | | |
| | | 454 | | public override void RemoveDispatcher(MessageFilter filter) |
| | | 455 | | { |
| | | 456 | | lock (ThisLock) |
| | | 457 | | { |
| | | 458 | | _filterTable.Remove(filter); |
| | | 459 | | } |
| | | 460 | | } |
| | | 461 | | |
| | | 462 | | protected abstract void AbortItem(TInnerItem item); |
| | | 463 | | protected abstract Task EndpointNotFoundAsync(TInnerItem item); |
| | | 464 | | protected abstract Message GetMessage(TInnerItem item); |
| | | 465 | | |
| | | 466 | | protected IServiceDispatcher MatchDispatcher(Message message) |
| | | 467 | | { |
| | | 468 | | IServiceDispatcher matchingDispatcher = null; |
| | | 469 | | lock (ThisLock) |
| | | 470 | | { |
| | | 471 | | if (_filterTable.GetMatchingValue(message, out matchingDispatcher)) |
| | | 472 | | { |
| | | 473 | | return matchingDispatcher; |
| | | 474 | | } |
| | | 475 | | } |
| | | 476 | | |
| | | 477 | | return null; |
| | | 478 | | } |
| | | 479 | | } |
| | | 480 | | |
| | | 481 | | internal class ReplyChannelDemuxer : DatagramChannelDemuxer<IReplyChannel, RequestContext> |
| | | 482 | | { |
| | | 483 | | private static readonly IList<Type> s_supportedChannelTypes = new List<Type> { typeof(IReplyChannel) }; |
| | | 484 | | |
| | | 485 | | public override Uri BaseAddress => throw new NotImplementedException(); |
| | | 486 | | |
| | | 487 | | public override Binding Binding => throw new NotImplementedException(); |
| | | 488 | | |
| | | 489 | | public override IList<Type> SupportedChannelTypes => s_supportedChannelTypes; |
| | | 490 | | |
| | | 491 | | public ReplyChannelDemuxer(BindingParameterCollection bindingParameters) : base(bindingParameters) |
| | | 492 | | { |
| | | 493 | | } |
| | | 494 | | |
| | | 495 | | public override Task<IServiceChannelDispatcher> CreateServiceChannelDispatcherAsync(IChannel channel) |
| | | 496 | | { |
| | | 497 | | return Task.FromResult<IServiceChannelDispatcher>(new ReplyChannelDispatcher(this, channel)); |
| | | 498 | | } |
| | | 499 | | |
| | | 500 | | protected override void AbortItem(RequestContext request) |
| | | 501 | | { |
| | | 502 | | AbortMessage(request); |
| | | 503 | | request.Abort(); |
| | | 504 | | } |
| | | 505 | | |
| | | 506 | | protected override async Task EndpointNotFoundAsync(RequestContext request) |
| | | 507 | | { |
| | | 508 | | bool abortItem = true; |
| | | 509 | | try |
| | | 510 | | { |
| | | 511 | | if (DemuxFailureHandler != null) |
| | | 512 | | { |
| | | 513 | | try |
| | | 514 | | { |
| | | 515 | | await DemuxFailureHandler.HandleDemuxFailureAsync(request.RequestMessage, request); |
| | | 516 | | abortItem = false; |
| | | 517 | | } |
| | | 518 | | catch (CommunicationException e) |
| | | 519 | | { |
| | | 520 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | | 521 | | } |
| | | 522 | | catch (TimeoutException e) |
| | | 523 | | { |
| | | 524 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | | 525 | | } |
| | | 526 | | catch (ObjectDisposedException e) |
| | | 527 | | { |
| | | 528 | | DiagnosticUtility.TraceHandledException(e, TraceEventType.Information); |
| | | 529 | | } |
| | | 530 | | catch (Exception e) |
| | | 531 | | { |
| | | 532 | | if (Fx.IsFatal(e)) throw; |
| | | 533 | | throw e; |
| | | 534 | | } |
| | | 535 | | } |
| | | 536 | | } |
| | | 537 | | finally |
| | | 538 | | { |
| | | 539 | | if (abortItem) |
| | | 540 | | { |
| | | 541 | | AbortItem(request); |
| | | 542 | | } |
| | | 543 | | } |
| | | 544 | | } |
| | | 545 | | |
| | | 546 | | protected override Message GetMessage(RequestContext request) |
| | | 547 | | { |
| | | 548 | | return request.RequestMessage; |
| | | 549 | | } |
| | | 550 | | |
| | | 551 | | internal class ReplyChannelDispatcher : IServiceChannelDispatcher |
| | | 552 | | { |
| | | 553 | | private readonly ReplyChannelDemuxer _demuxer; |
| | | 554 | | private readonly IChannel _channel; |
| | | 555 | | |
| | | 556 | | public ReplyChannelDispatcher(ReplyChannelDemuxer replyChannelDemuxer, IChannel channel) |
| | | 557 | | { |
| | | 558 | | _demuxer = replyChannelDemuxer; |
| | | 559 | | _channel = channel; |
| | | 560 | | } |
| | | 561 | | |
| | | 562 | | public async Task DispatchAsync(RequestContext context) |
| | | 563 | | { |
| | | 564 | | // TODO: Find way to avoid instantiating a new ServiceChannelDispatcher each time |
| | | 565 | | IServiceDispatcher serviceDispatcher = _demuxer.MatchDispatcher(context.RequestMessage); |
| | | 566 | | if (serviceDispatcher == null) |
| | | 567 | | { |
| | | 568 | | ErrorBehavior.ThrowAndCatch( |
| | | 569 | | new EndpointNotFoundException(SR.Format(SR.UnableToDemuxChannel, context.RequestMessage.Headers. |
| | | 570 | | await _demuxer.EndpointNotFoundAsync(context); |
| | | 571 | | return; |
| | | 572 | | } |
| | | 573 | | // TODO: if serviceDispatcher == null, use the EndpointNotFound code path |
| | | 574 | | IServiceChannelDispatcher serviceChannelDispatcher = await serviceDispatcher.CreateServiceChannelDispatc |
| | | 575 | | await serviceChannelDispatcher.DispatchAsync(context); |
| | | 576 | | } |
| | | 577 | | |
| | | 578 | | public Task DispatchAsync(Message message) |
| | | 579 | | { |
| | | 580 | | return Task.FromException(new NotImplementedException()); |
| | | 581 | | } |
| | | 582 | | } |
| | | 583 | | } |
| | | 584 | | |
| | | 585 | | internal interface IChannelDemuxerFilter |
| | | 586 | | { |
| | | 587 | | ChannelDemuxerFilter Filter { get; } |
| | | 588 | | } |
| | | 589 | | |
| | | 590 | | internal class ChannelDemuxerFilter |
| | | 591 | | { |
| | | 592 | | public ChannelDemuxerFilter(MessageFilter filter, int priority) |
| | | 593 | | { |
| | | 594 | | Filter = filter; |
| | | 595 | | Priority = priority; |
| | | 596 | | } |
| | | 597 | | |
| | | 598 | | public MessageFilter Filter { get; } |
| | | 599 | | |
| | | 600 | | public int Priority { get; } |
| | | 601 | | } |
| | | 602 | | |
| | | 603 | | internal interface IChannelDemuxFailureHandler |
| | | 604 | | { |
| | | 605 | | Task HandleDemuxFailureAsync(Message message); |
| | | 606 | | Task HandleDemuxFailureAsync(Message message, RequestContext faultContext); |
| | | 607 | | } |
| | | 608 | | } |