mcs/class/System.ServiceModel/System.ServiceModel.Channels/ReplyChannelBase.cs

   1 //
   2 // ReplyChannelBase.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.IO;
  31 using System.Net;
  32 using System.Net.Security;
  33 using System.ServiceModel;
  34 using System.ServiceModel.Description;
  35 using System.ServiceModel.Security;
  36 using System.Threading;
  37
  38 namespace System.ServiceModel.Channels
  39 {
  40         internal abstract class InternalReplyChannelBase : ReplyChannelBase
  41         {
  42                 public InternalReplyChannelBase (ChannelListenerBase listener)
  43                         : base (listener)
  44                 {
  45                         local_address = new EndpointAddress (listener.Uri);
  46                 }
  47
  48                 EndpointAddress local_address;
  49
  50                 public override EndpointAddress LocalAddress {
  51                         get { return local_address; }
  52                 }
  53         }
  54
  55         internal abstract class ReplyChannelBase : ChannelBase, IReplyChannel
  56         {
  57                 public ReplyChannelBase (ChannelListenerBase listener)
  58                         : base (listener)
  59                 {
  60                         this.listener = listener;
  61                 }
  62
  63                 ChannelListenerBase listener;
  64
  65                 public ChannelListenerBase Listener {
  66                         get { return listener; }
  67                 }
  68
  69                 public abstract EndpointAddress LocalAddress { get; }
  70
  71                 public override T GetProperty<T> ()
  72                 {
  73                         if (typeof (T) == typeof (MessageVersion) && listener is IHasMessageEncoder)
  74                                 return (T) (object) ((IHasMessageEncoder) listener).MessageEncoder.MessageVersion;
  75                         if (typeof (T) == typeof (IChannelListener))
  76                                 return (T) (object) listener;
  77                         return base.GetProperty<T> ();
  78                 }
  79
  80                 // FIXME: this is wrong. Implement all of them in each channel.
  81                 protected override void OnAbort ()
  82                 {
  83                         OnClose (TimeSpan.Zero);
  84                 }
  85
  86                 protected override void OnClose (TimeSpan timeout)
  87                 {
  88                         if (CurrentAsyncThread != null)
  89                                 if (!CancelAsync (timeout))
  90                                         CurrentAsyncThread.Abort ();
  91                 }
  92
  93                 public virtual bool CancelAsync (TimeSpan timeout)
  94                 {
  95                         // FIXME: It should wait for the actual completion.
  96                         return CurrentAsyncResult == null;
  97                         //return CurrentAsyncResult == null || CurrentAsyncResult.AsyncWaitHandle.WaitOne (timeout);
  98                 }
  99
 100                 public virtual bool TryReceiveRequest ()
 101                 {
 102                         RequestContext dummy;
 103                         return TryReceiveRequest (DefaultReceiveTimeout, out dummy);
 104                 }
 105
 106                 public abstract bool TryReceiveRequest (TimeSpan timeout, out RequestContext context);
 107
 108                 delegate bool TryReceiveDelegate (TimeSpan timeout, out RequestContext context);
 109                 TryReceiveDelegate try_recv_delegate;
 110
 111                 object async_result_lock = new object ();
 112                 protected Thread CurrentAsyncThread { get; private set; }
 113                 protected IAsyncResult CurrentAsyncResult { get; private set; }
 114
 115                 public virtual IAsyncResult BeginTryReceiveRequest (TimeSpan timeout, AsyncCallback callback, object state)
 116                 {
 117                         if (CurrentAsyncResult != null)
 118                                 throw new InvalidOperationException ("Another async TryReceiveRequest operation is in progress");
 119                         if (try_recv_delegate == null)
 120                                 try_recv_delegate = new TryReceiveDelegate (delegate (TimeSpan tout, out RequestContext ctx) {
 121                                         lock (async_result_lock) {
 122                                                 if (CurrentAsyncResult != null)
 123                                                         CurrentAsyncThread = Thread.CurrentThread;
 124                                         }
 125                                         try {
 126                                                 return TryReceiveRequest (tout, out ctx);
 127                                         } finally {
 128                                                 lock (async_result_lock) {
 129                                                         CurrentAsyncResult = null;
 130                                                         CurrentAsyncThread = null;
 131                                                 }
 132                                         }
 133                                         });
 134                         RequestContext dummy;
 135                         IAsyncResult result;
 136                         lock (async_result_lock) {
 137                                 result = CurrentAsyncResult = try_recv_delegate.BeginInvoke (timeout, out dummy, callback, state);
 138                         }
 139                         // Note that at this point CurrentAsyncResult can be null here if delegate has run to completion
 140                         return result;
 141                 }
 142
 143                 public virtual bool EndTryReceiveRequest (IAsyncResult result)
 144                 {
 145                         RequestContext dummy;
 146                         return EndTryReceiveRequest (result, out dummy);
 147                 }
 148
 149                 public virtual bool EndTryReceiveRequest (IAsyncResult result, out RequestContext context)
 150                 {
 151                         if (try_recv_delegate == null)
 152                                 throw new InvalidOperationException ("BeginTryReceiveRequest operation has not started");
 153                         return try_recv_delegate.EndInvoke (out context, result);
 154                 }
 155
 156                 public virtual bool WaitForRequest ()
 157                 {
 158                         return WaitForRequest (DefaultReceiveTimeout);
 159                 }
 160
 161                 public abstract bool WaitForRequest (TimeSpan timeout);
 162
 163                 Func<TimeSpan,bool> wait_delegate;
 164
 165                 public virtual IAsyncResult BeginWaitForRequest (TimeSpan timeout, AsyncCallback callback, object state)
 166                 {
 167                         if (wait_delegate == null)
 168                                 wait_delegate = new Func<TimeSpan,bool> (WaitForRequest);
 169                         return wait_delegate.BeginInvoke (timeout, callback, state);
 170                 }
 171
 172                 public virtual bool EndWaitForRequest (IAsyncResult result)
 173                 {
 174                         if (wait_delegate == null)
 175                                 throw new InvalidOperationException ("BeginWaitForRequest operation has not started");
 176                         return wait_delegate.EndInvoke (result);
 177                 }
 178
 179                 public virtual RequestContext ReceiveRequest ()
 180                 {
 181                         return ReceiveRequest (DefaultReceiveTimeout);
 182                 }
 183
 184                 public abstract RequestContext ReceiveRequest (TimeSpan timeout);
 185
 186                 public virtual IAsyncResult BeginReceiveRequest (AsyncCallback callback, object state)
 187                 {
 188                         return BeginReceiveRequest (DefaultReceiveTimeout, callback, state);
 189                 }
 190
 191                 Func<TimeSpan,RequestContext> recv_delegate;
 192                 public virtual IAsyncResult BeginReceiveRequest (TimeSpan timeout, AsyncCallback callback, object state)
 193                 {
 194                         if (recv_delegate == null)
 195                                 recv_delegate = new Func<TimeSpan,RequestContext> (ReceiveRequest);
 196                         return recv_delegate.BeginInvoke (timeout, callback, state);
 197                 }
 198
 199                 public virtual RequestContext EndReceiveRequest (IAsyncResult result)
 200                 {
 201                         if (recv_delegate == null)
 202                                 throw new InvalidOperationException ("BeginReceiveRequest operation has not started");
 203                         return recv_delegate.EndInvoke (result);
 204                 }
 205
 206                 Action<TimeSpan> open_delegate, close_delegate;
 207
 208                 protected override IAsyncResult OnBeginOpen (TimeSpan timeout,
 209                         AsyncCallback callback, object state)
 210                 {
 211                         if (open_delegate == null)
 212                                 open_delegate = new Action<TimeSpan> (OnOpen);
 213                         return open_delegate.BeginInvoke (timeout, callback, state);
 214                 }
 215
 216                 protected override void OnEndOpen (IAsyncResult result)
 217                 {
 218                         if (open_delegate == null)
 219                                 throw new InvalidOperationException ("async open operation has not started");
 220                         open_delegate.EndInvoke (result);
 221                 }
 222
 223                 protected override IAsyncResult OnBeginClose (TimeSpan timeout,
 224                         AsyncCallback callback, object state)
 225                 {
 226                         if (close_delegate == null)
 227                                 close_delegate = new Action<TimeSpan> (OnClose);
 228                         return close_delegate.BeginInvoke (timeout, callback, state);
 229                 }
 230
 231                 protected override void OnEndClose (IAsyncResult result)
 232                 {
 233                         if (close_delegate == null)
 234                                 throw new InvalidOperationException ("async close operation has not started");
 235                         close_delegate.EndInvoke (result);
 236                 }
 237         }
 238 }