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 (IChannelListener))
  74                                 return (T) (object) listener;
  75                         return base.GetProperty<T> ();
  76                 }
  77
  78                 // FIXME: this is wrong. Implement all of them in each channel.
  79                 protected override void OnAbort ()
  80                 {
  81                         OnClose (TimeSpan.Zero);
  82                 }
  83
  84                 protected override void OnClose (TimeSpan timeout)
  85                 {
  86                         if (CurrentAsyncThread != null)
  87                                 if (!CancelAsync (timeout))
  88                                         CurrentAsyncThread.Abort ();
  89                 }
  90
  91                 public virtual bool CancelAsync (TimeSpan timeout)
  92                 {
  93                         // FIXME: It should wait for the actual completion.
  94                         return CurrentAsyncResult == null;
  95                         //return CurrentAsyncResult == null || CurrentAsyncResult.AsyncWaitHandle.WaitOne (timeout);
  96                 }
  97
  98                 public virtual bool TryReceiveRequest ()
  99                 {
 100                         RequestContext dummy;
 101                         return TryReceiveRequest (DefaultReceiveTimeout, out dummy);
 102                 }
 103
 104                 public abstract bool TryReceiveRequest (TimeSpan timeout, out RequestContext context);
 105
 106                 delegate bool TryReceiveDelegate (TimeSpan timeout, out RequestContext context);
 107                 TryReceiveDelegate try_recv_delegate;
 108
 109                 object async_result_lock = new object ();
 110                 protected Thread CurrentAsyncThread { get; private set; }
 111                 protected IAsyncResult CurrentAsyncResult { get; private set; }
 112
 113                 public virtual IAsyncResult BeginTryReceiveRequest (TimeSpan timeout, AsyncCallback callback, object state)
 114                 {
 115                         if (CurrentAsyncResult != null)
 116                                 throw new InvalidOperationException ("Another async TryReceiveRequest operation is in progress");
 117                         if (try_recv_delegate == null)
 118                                 try_recv_delegate = new TryReceiveDelegate (delegate (TimeSpan tout, out RequestContext ctx) {
 119                                         lock (async_result_lock) {
 120                                                 if (CurrentAsyncResult != null)
 121                                                         CurrentAsyncThread = Thread.CurrentThread;
 122                                         }
 123                                         try {
 124                                                 return TryReceiveRequest (tout, out ctx);
 125                                         } finally {
 126                                                 lock (async_result_lock) {
 127                                                         CurrentAsyncResult = null;
 128                                                         CurrentAsyncThread = null;
 129                                                 }
 130                                         }
 131                                         });
 132                         RequestContext dummy;
 133                         IAsyncResult result;
 134                         lock (async_result_lock) {
 135                                 result = CurrentAsyncResult = try_recv_delegate.BeginInvoke (timeout, out dummy, callback, state);
 136                         }
 137                         // Note that at this point CurrentAsyncResult can be null here if delegate has run to completion
 138                         return result;
 139                 }
 140
 141                 public virtual bool EndTryReceiveRequest (IAsyncResult result)
 142                 {
 143                         RequestContext dummy;
 144                         return EndTryReceiveRequest (result, out dummy);
 145                 }
 146
 147                 public virtual bool EndTryReceiveRequest (IAsyncResult result, out RequestContext context)
 148                 {
 149                         if (try_recv_delegate == null)
 150                                 throw new InvalidOperationException ("BeginTryReceiveRequest operation has not started");
 151                         return try_recv_delegate.EndInvoke (out context, result);
 152                 }
 153
 154                 public virtual bool WaitForRequest ()
 155                 {
 156                         return WaitForRequest (DefaultReceiveTimeout);
 157                 }
 158
 159                 public abstract bool WaitForRequest (TimeSpan timeout);
 160
 161                 Func<TimeSpan,bool> wait_delegate;
 162
 163                 public virtual IAsyncResult BeginWaitForRequest (TimeSpan timeout, AsyncCallback callback, object state)
 164                 {
 165                         if (wait_delegate == null)
 166                                 wait_delegate = new Func<TimeSpan,bool> (WaitForRequest);
 167                         return wait_delegate.BeginInvoke (timeout, callback, state);
 168                 }
 169
 170                 public virtual bool EndWaitForRequest (IAsyncResult result)
 171                 {
 172                         if (wait_delegate == null)
 173                                 throw new InvalidOperationException ("BeginWaitForRequest operation has not started");
 174                         return wait_delegate.EndInvoke (result);
 175                 }
 176
 177                 public virtual RequestContext ReceiveRequest ()
 178                 {
 179                         return ReceiveRequest (DefaultReceiveTimeout);
 180                 }
 181
 182                 public abstract RequestContext ReceiveRequest (TimeSpan timeout);
 183
 184                 public virtual IAsyncResult BeginReceiveRequest (AsyncCallback callback, object state)
 185                 {
 186                         return BeginReceiveRequest (DefaultReceiveTimeout, callback, state);
 187                 }
 188
 189                 Func<TimeSpan,RequestContext> recv_delegate;
 190                 public virtual IAsyncResult BeginReceiveRequest (TimeSpan timeout, AsyncCallback callback, object state)
 191                 {
 192                         if (recv_delegate == null)
 193                                 recv_delegate = new Func<TimeSpan,RequestContext> (ReceiveRequest);
 194                         return recv_delegate.BeginInvoke (timeout, callback, state);
 195                 }
 196
 197                 public virtual RequestContext EndReceiveRequest (IAsyncResult result)
 198                 {
 199                         if (recv_delegate == null)
 200                                 throw new InvalidOperationException ("BeginReceiveRequest operation has not started");
 201                         return recv_delegate.EndInvoke (result);
 202                 }
 203
 204                 Action<TimeSpan> open_delegate, close_delegate;
 205
 206                 protected override IAsyncResult OnBeginOpen (TimeSpan timeout,
 207                         AsyncCallback callback, object state)
 208                 {
 209                         if (open_delegate == null)
 210                                 open_delegate = new Action<TimeSpan> (OnOpen);
 211                         return open_delegate.BeginInvoke (timeout, callback, state);
 212                 }
 213
 214                 protected override void OnEndOpen (IAsyncResult result)
 215                 {
 216                         if (open_delegate == null)
 217                                 throw new InvalidOperationException ("async open operation has not started");
 218                         open_delegate.EndInvoke (result);
 219                 }
 220
 221                 protected override IAsyncResult OnBeginClose (TimeSpan timeout,
 222                         AsyncCallback callback, object state)
 223                 {
 224                         if (close_delegate == null)
 225                                 close_delegate = new Action<TimeSpan> (OnClose);
 226                         return close_delegate.BeginInvoke (timeout, callback, state);
 227                 }
 228
 229                 protected override void OnEndClose (IAsyncResult result)
 230                 {
 231                         if (close_delegate == null)
 232                                 throw new InvalidOperationException ("async close operation has not started");
 233                         close_delegate.EndInvoke (result);
 234                 }
 235         }
 236 }