Util/UnixClient.cs

   1 //
   2 // UnixListener.cs
   3 //
   4 // Authors:
   5 //      Joe Shaw (joeshaw@novell.com)
   6 //
   7 // Copyright (C) 2004-2005 Novell, Inc.
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining a
  12 // copy of this software and associated documentation files (the "Software"),
  13 // to deal in the Software without restriction, including without limitation
  14 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15 // and/or sell copies of the Software, and to permit persons to whom the
  16 // Software is furnished to do so, subject to the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be included in
  19 // all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  26 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  27 // DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.IO;
  32 using System.Net;
  33 using System.Net.Sockets;
  34 using System.Runtime.InteropServices;
  35
  36 using Mono.Posix;
  37
  38 namespace Beagle.Util {
  39
  40         public class UnixClient : IDisposable {
  41                 NetworkStream stream;
  42                 Socket client;
  43                 bool disposed;
  44
  45                 public UnixClient ()
  46                 {
  47                         if (client != null) {
  48                                 client.Close ();
  49                                 client = null;
  50                         }
  51
  52                         client = new Socket (AddressFamily.Unix, SocketType.Stream, 0);
  53                 }
  54
  55                 public UnixClient (string path) : this ()
  56                 {
  57                         if (path == null)
  58                                 throw new ArgumentNullException ("ep");
  59
  60                         Connect (path);
  61                 }
  62
  63                 public UnixClient (UnixEndPoint ep) : this ()
  64                 {
  65                         if (ep == null)
  66                                 throw new ArgumentNullException ("ep");
  67
  68                         Connect (ep);
  69                 }
  70
  71                 // UnixListener uses this when accepting a connection.
  72                 internal UnixClient (Socket sock)
  73                 {
  74                         Client = sock;
  75                 }
  76
  77                 protected Socket Client {
  78                         get { return client; }
  79                         set {
  80                                 client = value;
  81                                 stream = null;
  82                         }
  83                 }
  84
  85                 public PeerCred PeerCredential {
  86                         get {
  87                                 CheckDisposed ();
  88                                 return new PeerCred (client);
  89                         }
  90                 }
  91
  92                 public LingerOption LingerState {
  93                         get {
  94                                 CheckDisposed ();
  95                                 return (LingerOption) client.GetSocketOption (SocketOptionLevel.Socket,
  96                                                                               SocketOptionName.Linger);
  97                         }
  98
  99                         set {
 100                                 CheckDisposed ();
 101                                 client.SetSocketOption (SocketOptionLevel.Socket,
 102                                                         SocketOptionName.Linger, value);
 103                         }
 104                 }
 105
 106                 public int ReceiveBufferSize {
 107                         get {
 108                                 CheckDisposed ();
 109                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 110                                                                      SocketOptionName.ReceiveBuffer);
 111                         }
 112
 113                         set {
 114                                 CheckDisposed ();
 115                                 client.SetSocketOption (SocketOptionLevel.Socket,
 116                                                         SocketOptionName.ReceiveBuffer, value);
 117                         }
 118                 }
 119
 120                 public int ReceiveTimeout {
 121                         get {
 122                                 CheckDisposed ();
 123                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 124                                                                      SocketOptionName.ReceiveTimeout);
 125                         }
 126
 127                         set {
 128                                 CheckDisposed ();
 129                                 client.SetSocketOption (SocketOptionLevel.Socket,
 130                                                         SocketOptionName.ReceiveTimeout, value);
 131                         }
 132                 }
 133
 134                 public int SendBufferSize {
 135                         get {
 136                                 CheckDisposed ();
 137                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 138                                                                      SocketOptionName.SendBuffer);
 139                         }
 140
 141                         set {
 142                                 CheckDisposed ();
 143                                 client.SetSocketOption (SocketOptionLevel.Socket,
 144                                                         SocketOptionName.SendBuffer, value);
 145                         }
 146                 }
 147
 148                 public int SendTimeout {
 149                         get {
 150                                 CheckDisposed ();
 151                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 152                                                                      SocketOptionName.SendTimeout);
 153                         }
 154
 155                         set {
 156                                 CheckDisposed ();
 157                                 client.SetSocketOption (SocketOptionLevel.Socket,
 158                                                         SocketOptionName.SendTimeout, value);
 159                         }
 160                 }
 161
 162                 public void Close ()
 163                 {
 164                         CheckDisposed ();
 165                         Dispose ();
 166                 }
 167
 168                 public void Connect (UnixEndPoint remoteEndPoint)
 169                 {
 170                         CheckDisposed ();
 171                         client.Connect (remoteEndPoint);
 172                         stream = new NetworkStream (client, true);
 173                 }
 174
 175                 public void Connect (string path)
 176                 {
 177                         CheckDisposed ();
 178                         Connect (new UnixEndPoint (path));
 179                 }
 180
 181                 public void Dispose ()
 182                 {
 183                         Dispose (true);
 184                         GC.SuppressFinalize (this);
 185                 }
 186
 187                 protected virtual void Dispose (bool disposing)
 188                 {
 189                         if (disposed)
 190                                 return;
 191
 192                         if (disposing) {
 193                                 // release managed resources
 194                                 NetworkStream s = stream;
 195                                 stream = null;
 196                                 if (s != null) {
 197                                         // This closes the socket as well, as the NetworkStream
 198                                         // owns the socket.
 199                                         s.Close();
 200                                         s = null;
 201                                 } else if (client != null){
 202                                         client.Close ();
 203                                 }
 204                                 client = null;
 205                         }
 206
 207                         disposed = true;
 208                 }
 209
 210                 public NetworkStream GetStream ()
 211                 {
 212                         CheckDisposed ();
 213                         if (stream == null)
 214                                 stream = new NetworkStream (client, true);
 215
 216                         return stream;
 217                 }
 218
 219                 void CheckDisposed ()
 220                 {
 221                         if (disposed)
 222                                 throw new ObjectDisposedException (GetType().FullName);
 223                 }
 224
 225                 ~UnixClient ()
 226                 {
 227                         Dispose (false);
 228                 }
 229         }
 230 }
 231