mcs/class/System.ServiceModel/System.ServiceModel.Channels.NetTcp/TcpRequestChannel.cs

   1 //
   2 // TcpRequestChannel.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2009 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.Sockets;
  33 using System.ServiceModel;
  34 using System.ServiceModel.Description;
  35 using System.Threading;
  36 using System.Xml;
  37
  38 namespace System.ServiceModel.Channels.NetTcp
  39 {
  40         internal class TcpRequestChannel : RequestChannelBase
  41         {
  42                 TcpChannelInfo info;
  43                 TcpClient client;
  44                 TcpBinaryFrameManager frame;
  45
  46                 public TcpRequestChannel (ChannelFactoryBase factory, TcpChannelInfo info, EndpointAddress address, Uri via)
  47                         : base (factory, address, via)
  48                 {
  49                         this.info = info;
  50                 }
  51
  52                 public MessageEncoder Encoder {
  53                         get { return info.MessageEncoder; }
  54                 }
  55
  56                 protected override void OnAbort ()
  57                 {
  58                         OnClose (TimeSpan.Zero);
  59                 }
  60
  61                 protected override void OnClose (TimeSpan timeout)
  62                 {
  63                         if (client != null)
  64                                 client.Close ();
  65                 }
  66
  67                 protected override void OnOpen (TimeSpan timeout)
  68                 {
  69                         CreateClient (timeout);
  70                 }
  71
  72                 void CreateClient (TimeSpan timeout)
  73                 {
  74                         int explicitPort = Via.Port;
  75                         client = new TcpClient (Via.Host, explicitPort <= 0 ? TcpTransportBindingElement.DefaultPort : explicitPort);
  76
  77                         NetworkStream ns = client.GetStream ();
  78                         frame = new TcpBinaryFrameManager (TcpBinaryFrameManager.SingletonUnsizedMode, ns, false) {
  79                                 Encoder = this.Encoder,
  80                                 Via = this.Via };
  81                 }
  82
  83                 public override Message Request (Message input, TimeSpan timeout)
  84                 {
  85                         DateTime start = DateTime.Now;
  86
  87                         // FIXME: use timeouts.
  88                         frame.ProcessPreambleInitiator ();
  89                         frame.ProcessPreambleAckInitiator ();
  90
  91                         if (input.Headers.To == null)
  92                                 input.Headers.To = RemoteAddress.Uri;
  93                         if (input.Headers.MessageId == null)
  94                                 input.Headers.MessageId = new UniqueId ();
  95
  96                         Logger.LogMessage (MessageLogSourceKind.TransportSend, ref input, int.MaxValue); // It is not a receive buffer
  97
  98                         frame.WriteUnsizedMessage (input, timeout - (DateTime.Now - start));
  99
 100                         // LAMESPEC: it contradicts the protocol described at section 3.1.1.1.1 in [MC-NMF].
 101                         // Moving this WriteEndRecord() after ReadUnsizedMessage() causes TCP connection blocking.
 102                         frame.WriteEndRecord ();
 103
 104                         var ret = frame.ReadUnsizedMessage (timeout - (DateTime.Now - start));
 105
 106                         Logger.LogMessage (MessageLogSourceKind.TransportReceive, ref ret, info.BindingElement.MaxReceivedMessageSize);
 107
 108                         frame.ReadEndRecord (); // both
 109                         return ret;
 110                 }
 111         }
 112 }