class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Tcp/TcpClientChannel.cs

   1 //
   2 // System.Runtime.Remoting.Channels.Tcp.TcpClientChannel.cs
   3 //
   4 // Author: Dietmar Maurer (dietmar@ximian.com)
   5 //         Lluis Sanchez Gual (lluis@ideary.com)
   6 //
   7 // 2002 (C) Copyright, Ximian, Inc.
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Collections;
  32 using System.IO;
  33 using System.Net.Sockets;
  34 using System.Runtime.Remoting.Messaging;
  35 using System.Runtime.Remoting.Channels;
  36 using System.Threading;
  37
  38 namespace System.Runtime.Remoting.Channels.Tcp
  39 {
  40         public class TcpClientChannel : IChannelSender, IChannel
  41         {
  42                 int priority = 1;
  43                 string name = "tcp";
  44                 IClientChannelSinkProvider _sinkProvider;
  45
  46                 public TcpClientChannel ()
  47                 {
  48                         _sinkProvider = new BinaryClientFormatterSinkProvider ();
  49                         _sinkProvider.Next = new TcpClientTransportSinkProvider ();
  50                 }
  51
  52                 public TcpClientChannel (IDictionary properties, IClientChannelSinkProvider sinkProvider)
  53                 {
  54                         if (properties != null) {
  55                                 object val = properties ["name"];
  56                                 if (val != null) name = val as string;
  57
  58                                 val = properties ["priority"];
  59                                 if (val != null) priority = Convert.ToInt32 (val);
  60                         }
  61
  62                         if (sinkProvider != null)
  63                         {
  64                                 _sinkProvider = sinkProvider;
  65
  66                                 // add the tcp provider at the end of the chain
  67                                 IClientChannelSinkProvider prov = sinkProvider;
  68                                 while (prov.Next != null) prov = prov.Next;
  69                                 prov.Next = new TcpClientTransportSinkProvider ();
  70
  71                                 // Note: a default formatter is added only when
  72                                 // no sink providers are specified in the config file.
  73                         }
  74                         else
  75                         {
  76                                 _sinkProvider = new BinaryClientFormatterSinkProvider ();
  77                                 _sinkProvider.Next = new TcpClientTransportSinkProvider ();
  78                         }
  79
  80                 }
  81
  82                 public TcpClientChannel (string name, IClientChannelSinkProvider sinkProvider)
  83                 {
  84                         this.name = name;
  85
  86                         if (sinkProvider != null) {
  87                                 _sinkProvider = sinkProvider;
  88
  89                                 // add the tcp provider at the end of the chain
  90                                 IClientChannelSinkProvider prov = sinkProvider;
  91                                 while (prov.Next != null)
  92                                         prov = prov.Next;
  93                                 prov.Next = new TcpClientTransportSinkProvider ();
  94                         } else {
  95                                 _sinkProvider = new BinaryClientFormatterSinkProvider ();
  96                                 _sinkProvider.Next = new TcpClientTransportSinkProvider ();
  97                         }
  98                 }
  99
 100                 public string ChannelName
 101                 {
 102                         get {
 103                                 return name;
 104                         }
 105                 }
 106
 107                 public int ChannelPriority
 108                 {
 109                         get {
 110                                 return priority;
 111                         }
 112                 }
 113
 114                 public virtual IMessageSink CreateMessageSink (string url,
 115                                                        object remoteChannelData,
 116                                                        out string objectURI)
 117             {
 118                         if (url != null && Parse (url, out objectURI) != null)
 119                                 return (IMessageSink) _sinkProvider.CreateSink (this, url, remoteChannelData);
 120
 121                         if (remoteChannelData != null) {
 122                                 IChannelDataStore ds = remoteChannelData as IChannelDataStore;
 123                                 if (ds != null && ds.ChannelUris.Length > 0)
 124                                         url = ds.ChannelUris [0];
 125                                 else {
 126                                         objectURI = null;
 127                                         return null;
 128                                 }
 129                         }
 130
 131                         if (Parse (url, out objectURI) == null)
 132                                 return null;
 133
 134                         return (IMessageSink) _sinkProvider.CreateSink (this, url, remoteChannelData);
 135                 }
 136
 137                 public string Parse (string url, out string objectURI)
 138                 {
 139                         return TcpChannel.ParseChannelUrl (url, out objectURI);
 140                 }
 141         }
 142 }