mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Tcp/TcpChannel.cs

   1 //
   2 // System.Runtime.Remoting.Channels.Tcp.TcpChannel.cs
   3 //
   4 // Author: Rodrigo Moya (rodrigo@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.Runtime.Remoting.Messaging;
  33 using System.Text.RegularExpressions;
  34
  35 namespace System.Runtime.Remoting.Channels.Tcp
  36 {
  37         public class TcpChannel : IChannelReceiver, IChannel, IChannelSender
  38         {
  39                 private TcpClientChannel _clientChannel;
  40                 private TcpServerChannel _serverChannel = null;
  41                 private string _name = "tcp";
  42                 private int _priority = 1;
  43
  44                 public TcpChannel ()
  45         {
  46                         Init (new Hashtable(), null, null);
  47                 }
  48
  49                 public TcpChannel (int port)
  50                 {
  51                         Hashtable ht = new Hashtable();
  52                         ht["port"] = port.ToString();
  53                         Init(ht, null, null);
  54                 }
  55
  56                 void Init (IDictionary properties, IClientChannelSinkProvider clientSink, IServerChannelSinkProvider serverSink)
  57                 {
  58                         _clientChannel = new TcpClientChannel (properties,clientSink);
  59
  60                         if (properties != null) {
  61                                 if(properties["port"] != null)
  62                                         _serverChannel = new TcpServerChannel(properties, serverSink);
  63
  64                                 object val = properties ["name"];
  65                                 if (val != null) _name = val as string;
  66
  67                                 val = properties ["priority"];
  68                                 if (val != null) _priority = Convert.ToInt32 (val);
  69                         }
  70                 }
  71
  72
  73                 public TcpChannel (IDictionary properties,
  74                                    IClientChannelSinkProvider clientSinkProvider,
  75                                    IServerChannelSinkProvider serverSinkProvider)
  76                 {
  77                         Init (properties, clientSinkProvider, serverSinkProvider);
  78                 }
  79
  80                 public IMessageSink CreateMessageSink(string url, object remoteChannelData, out string objectURI)
  81                 {
  82                         return _clientChannel.CreateMessageSink(url, remoteChannelData, out objectURI);
  83                 }
  84
  85                 public string ChannelName
  86                 {
  87                         get { return _name; }
  88                 }
  89
  90                 public int ChannelPriority
  91                 {
  92                         get { return _priority; }
  93                 }
  94
  95                 public void StartListening (object data)
  96                 {
  97                         if (_serverChannel != null) _serverChannel.StartListening (data);
  98                 }
  99
 100                 public void StopListening (object data)
 101                 {
 102                         if (_serverChannel != null) _serverChannel.StopListening(data);
 103                         TcpConnectionPool.Shutdown ();
 104                 }
 105
 106                 public string[] GetUrlsForUri (string uri)
 107                 {
 108                         if (_serverChannel != null) return _serverChannel.GetUrlsForUri(uri);
 109                         else return null;
 110                 }
 111
 112                 public object ChannelData
 113                 {
 114                         get
 115                         {
 116                                 if (_serverChannel != null) return _serverChannel.ChannelData;
 117                                 else return null;
 118                         }
 119                 }
 120
 121                 public string Parse (string url, out string objectURI)
 122                 {
 123                         return TcpChannel.ParseChannelUrl (url, out objectURI);
 124                 }
 125
 126                 internal static string ParseChannelUrl (string url, out string objectURI)
 127                 {
 128                         if (url == null) throw new ArgumentNullException ("url");
 129
 130                         int port;
 131
 132                         string host = ParseTcpURL (url, out objectURI, out port);
 133                         if (host != null)
 134                                 return "tcp://" + host + ":" + port;
 135                         else
 136                                 return null;
 137                 }
 138
 139                 internal static string ParseTcpURL (string url, out string objectURI, out int port)
 140                 {
 141                         // format: "tcp://host:port/path/to/object"
 142
 143                         objectURI = null;
 144                         port = 0;
 145
 146                         if (!url.StartsWith ("tcp://")) return null;
 147                         int colon = url.IndexOf (':', 6);
 148                         if (colon == -1) return null;
 149                         string host = url.Substring (6, colon - 6);
 150
 151                         int slash = url.IndexOf ('/', colon + 1);
 152                         if (slash == -1) slash = url.Length;
 153                         string port_str = url.Substring (colon + 1, slash - colon - 1);
 154
 155                         if (slash < url.Length)
 156                                 objectURI = url.Substring (slash + 1);
 157
 158                         try {
 159                                 port = Convert.ToInt32 (port_str);
 160                         } catch {
 161                                 return null;
 162                         }
 163
 164                         if (objectURI == string.Empty)
 165                                 objectURI = null;
 166
 167                         return host;
 168                 }
 169         }
 170 }