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

   1 //
   2 // PeerDuplexChannel.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.Collections.ObjectModel;
  31 using System.IO;
  32 using System.Net;
  33 using System.Net.Security;
  34 using System.Net.Sockets;
  35 using System.ServiceModel;
  36 using System.ServiceModel.Description;
  37 using System.ServiceModel.Security;
  38 using System.Threading;
  39
  40 namespace System.ServiceModel.Channels
  41 {
  42
  43         // PeerDuplexChannel can be created either from PeerChannelFactory
  44         // (as IOutputChannel) or PeerChannelListener (as IInputChannel).
  45         //
  46         // PeerNode has to be created before Open() (at least at client side).
  47         // On open, it tries to resolve the nodes in the mesh (and do something
  48         // - but what?). Then registers itself to the mesh and refreshes it.
  49
  50         internal class PeerDuplexChannel : DuplexChannelBase
  51         {
  52                 PeerTransportBindingElement binding;
  53                 EndpointAddress local_address;
  54                 PeerResolver resolver;
  55                 PeerNode node;
  56                 TcpListener listener;
  57                 TcpChannelInfo info;
  58                 List<PeerNodeAddress> peers = new List<PeerNodeAddress> ();
  59
  60                 public PeerDuplexChannel (IPeerChannelManager factory, EndpointAddress address, Uri via, PeerResolver resolver)
  61                         : base ((ChannelFactoryBase) factory, address, via)
  62                 {
  63                         binding = factory.Source;
  64                         this.resolver = factory.Resolver;
  65                         info = new TcpChannelInfo (binding, factory.MessageEncoder, null); // FIXME: fill properties correctly.
  66
  67                         // It could be opened even with empty list of PeerNodeAddresses.
  68                         // So, do not create PeerNode per PeerNodeAddress, but do it with PeerNodeAddress[].
  69                         node = new PeerNodeImpl (RemoteAddress, factory.Source.ListenIPAddress, factory.Source.Port);
  70                 }
  71
  72                 // FIXME: receive local_address too
  73                 public PeerDuplexChannel (IPeerChannelManager listener)
  74                         : base ((ChannelListenerBase) listener)
  75                 {
  76                         binding = listener.Source;
  77                         this.resolver = listener.Resolver;
  78                         info = new TcpChannelInfo (binding, listener.MessageEncoder, null); // FIXME: fill properties correctly.
  79
  80                         node = new PeerNodeImpl (null, listener.Source.ListenIPAddress, listener.Source.Port);
  81                 }
  82
  83                 public override EndpointAddress LocalAddress {
  84                         get { return local_address; }
  85                 }
  86
  87                 public override T GetProperty<T> ()
  88                 {
  89                         if (typeof (T).IsInstanceOfType (node))
  90                                 return (T) (object) node;
  91                         return base.GetProperty<T> ();
  92                 }
  93
  94                 // DuplexChannelBase
  95
  96                 TcpDuplexSessionChannel CreateInnerChannel (PeerNodeAddress pna)
  97                 {
  98                         var cfb = Manager as ChannelFactoryBase;
  99                         if (cfb != null)
 100                                 return new TcpDuplexSessionChannel (cfb, info, pna.EndpointAddress, Via);
 101                         else
 102                                 return new TcpDuplexSessionChannel ((ChannelListenerBase) Manager, info, listener.AcceptTcpClient ());
 103                 }
 104
 105                 public override void Send (Message message, TimeSpan timeout)
 106                 {
 107                         ThrowIfDisposedOrNotOpen ();
 108
 109                         DateTime start = DateTime.Now;
 110
 111                         foreach (var pna in peers) {
 112                                 var inner = CreateInnerChannel (pna);
 113                                 inner.Open (timeout - (DateTime.Now - start));
 114                                 inner.Send (message, timeout);
 115                         }
 116                 }
 117
 118                 public override Message Receive (TimeSpan timeout)
 119                 {
 120                         ThrowIfDisposedOrNotOpen ();
 121
 122                         throw new NotImplementedException ();
 123                 }
 124
 125                 public override bool WaitForMessage (TimeSpan timeout)
 126                 {
 127                         ThrowIfDisposedOrNotOpen ();
 128
 129                         throw new NotImplementedException ();
 130                 }
 131
 132                 // CommunicationObject
 133
 134                 protected override void OnAbort ()
 135                 {
 136                         OnClose (TimeSpan.Zero);
 137                 }
 138
 139                 protected override void OnClose (TimeSpan timeout)
 140                 {
 141                         DateTime start = DateTime.Now;
 142                         peers.Clear ();
 143                         resolver.Unregister (node.RegisteredId, timeout - (DateTime.Now - start));
 144                         node.SetOffline ();
 145                         if (listener != null)
 146                                 listener.Stop ();
 147                         node.RegisteredId = null;
 148                 }
 149
 150                 protected override void OnOpen (TimeSpan timeout)
 151                 {
 152                         DateTime start = DateTime.Now;
 153
 154                         // FIXME: supply maxAddresses
 155                         peers.AddRange (resolver.Resolve (node.MeshId, 3, timeout));
 156
 157                         listener = node.GetTcpListener ();
 158                         var ep = (IPEndPoint) listener.LocalEndpoint;
 159                         string name = Dns.GetHostName ();
 160                         var nid = new Random ().Next (0, int.MaxValue);
 161                         var ea = new EndpointAddress ("net.tcp://" + name + ":" + ep.Port + "/PeerChannelEndpoints/" + Guid.NewGuid ());
 162                         var pna = new PeerNodeAddress (ea, new ReadOnlyCollection<IPAddress> (Dns.GetHostEntry (ep.Address).AddressList));
 163                         node.RegisteredId = resolver.Register (node.MeshId, pna, timeout - (DateTime.Now - start));
 164                         node.NodeId = nid;
 165
 166                         node.SetOnline ();
 167                 }
 168         }
 169 }