mcs/class/Mono.Posix/Mono.Unix/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 namespace Mono.Unix {
  37
  38         public class UnixClient : MarshalByRefObject, IDisposable {
  39                 NetworkStream stream;
  40                 Socket client;
  41                 bool disposed;
  42
  43                 public UnixClient ()
  44                 {
  45                         if (client != null) {
  46                                 client.Close ();
  47                                 client = null;
  48                         }
  49
  50                         client = new Socket (AddressFamily.Unix, SocketType.Stream, 0);
  51                 }
  52
  53                 public UnixClient (string path) : this ()
  54                 {
  55                         if (path == null)
  56                                 throw new ArgumentNullException ("ep");
  57
  58                         Connect (path);
  59                 }
  60
  61                 public UnixClient (UnixEndPoint ep) : this ()
  62                 {
  63                         if (ep == null)
  64                                 throw new ArgumentNullException ("ep");
  65
  66                         Connect (ep);
  67                 }
  68
  69                 // UnixListener uses this when accepting a connection.
  70                 internal UnixClient (Socket sock)
  71                 {
  72                         Client = sock;
  73                 }
  74
  75                 protected Socket Client {
  76                         get { return client; }
  77                         set {
  78                                 client = value;
  79                                 stream = null;
  80                         }
  81                 }
  82
  83                 public PeerCred PeerCredential {
  84                         get {
  85                                 CheckDisposed ();
  86                                 return new PeerCred (client);
  87                         }
  88                 }
  89
  90                 public LingerOption LingerState {
  91                         get {
  92                                 CheckDisposed ();
  93                                 return (LingerOption) client.GetSocketOption (SocketOptionLevel.Socket,
  94                                                                               SocketOptionName.Linger);
  95                         }
  96
  97                         set {
  98                                 CheckDisposed ();
  99                                 client.SetSocketOption (SocketOptionLevel.Socket,
 100                                                         SocketOptionName.Linger, value);
 101                         }
 102                 }
 103
 104                 public int ReceiveBufferSize {
 105                         get {
 106                                 CheckDisposed ();
 107                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 108                                                                      SocketOptionName.ReceiveBuffer);
 109                         }
 110
 111                         set {
 112                                 CheckDisposed ();
 113                                 client.SetSocketOption (SocketOptionLevel.Socket,
 114                                                         SocketOptionName.ReceiveBuffer, value);
 115                         }
 116                 }
 117
 118                 public int ReceiveTimeout {
 119                         get {
 120                                 CheckDisposed ();
 121                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 122                                                                      SocketOptionName.ReceiveTimeout);
 123                         }
 124
 125                         set {
 126                                 CheckDisposed ();
 127                                 client.SetSocketOption (SocketOptionLevel.Socket,
 128                                                         SocketOptionName.ReceiveTimeout, value);
 129                         }
 130                 }
 131
 132                 public int SendBufferSize {
 133                         get {
 134                                 CheckDisposed ();
 135                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 136                                                                      SocketOptionName.SendBuffer);
 137                         }
 138
 139                         set {
 140                                 CheckDisposed ();
 141                                 client.SetSocketOption (SocketOptionLevel.Socket,
 142                                                         SocketOptionName.SendBuffer, value);
 143                         }
 144                 }
 145
 146                 public int SendTimeout {
 147                         get {
 148                                 CheckDisposed ();
 149                                 return (int) client.GetSocketOption (SocketOptionLevel.Socket,
 150                                                                      SocketOptionName.SendTimeout);
 151                         }
 152
 153                         set {
 154                                 CheckDisposed ();
 155                                 client.SetSocketOption (SocketOptionLevel.Socket,
 156                                                         SocketOptionName.SendTimeout, value);
 157                         }
 158                 }
 159
 160                 public void Close ()
 161                 {
 162                         CheckDisposed ();
 163                         Dispose ();
 164                 }
 165
 166                 public void Connect (UnixEndPoint remoteEndPoint)
 167                 {
 168                         CheckDisposed ();
 169                         client.Connect (remoteEndPoint);
 170                         stream = new NetworkStream (client, true);
 171                 }
 172
 173                 public void Connect (string path)
 174                 {
 175                         CheckDisposed ();
 176                         Connect (new UnixEndPoint (path));
 177                 }
 178
 179                 public void Dispose ()
 180                 {
 181                         Dispose (true);
 182                         GC.SuppressFinalize (this);
 183                 }
 184
 185                 protected virtual void Dispose (bool disposing)
 186                 {
 187                         if (disposed)
 188                                 return;
 189
 190                         if (disposing) {
 191                                 // release managed resources
 192                                 NetworkStream s = stream;
 193                                 stream = null;
 194                                 if (s != null) {
 195                                         // This closes the socket as well, as the NetworkStream
 196                                         // owns the socket.
 197                                         s.Close();
 198                                         s = null;
 199                                 } else if (client != null){
 200                                         client.Close ();
 201                                 }
 202                                 client = null;
 203                         }
 204
 205                         disposed = true;
 206                 }
 207
 208                 public NetworkStream GetStream ()
 209                 {
 210                         CheckDisposed ();
 211                         if (stream == null)
 212                                 stream = new NetworkStream (client, true);
 213
 214                         return stream;
 215                 }
 216
 217                 void CheckDisposed ()
 218                 {
 219                         if (disposed)
 220                                 throw new ObjectDisposedException (GetType().FullName);
 221                 }
 222
 223                 ~UnixClient ()
 224                 {
 225                         Dispose (false);
 226                 }
 227         }
 228 }
 229