mcs/class/System/Test/System.Net/SocketResponder.cs

   1 //
   2 // SocketResponder.cs - Utility class for tests that require a listener
   3 //
   4 // Author:
   5 //      Gert Driesen (drieseng@users.sourceforge.net)
   6 //
   7 // Copyright (C) 2007 Gert Driesen
   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
  29 using System;
  30 using System.Globalization;
  31 using System.IO;
  32 using System.Net;
  33 using System.Net.Sockets;
  34 using System.Text;
  35 using System.Threading;
  36
  37 namespace MonoTests.System.Net
  38 {
  39         public delegate byte [] SocketRequestHandler (Socket socket);
  40
  41         public class SocketResponder : IDisposable
  42         {
  43                 private TcpListener tcpListener;
  44                 private readonly IPEndPoint _localEndPoint;
  45                 private Thread listenThread;
  46                 private SocketRequestHandler _requestHandler;
  47                 private bool _stopped = true;
  48                 private readonly object _syncRoot = new object ();
  49
  50                 private const int SOCKET_CLOSED = 10004;
  51                 private const int SOCKET_INVALID_ARGS = 10022;
  52
  53                 public SocketResponder (IPEndPoint localEP, SocketRequestHandler requestHandler)
  54                 {
  55                         _localEndPoint = localEP;
  56                         _requestHandler = requestHandler;
  57                 }
  58
  59                 public IPEndPoint LocalEndPoint
  60                 {
  61                         get { return _localEndPoint; }
  62                 }
  63
  64                 public void Dispose ()
  65                 {
  66                         Stop ();
  67                 }
  68
  69                 public bool IsStopped
  70                 {
  71                         get
  72                         {
  73                                 lock (_syncRoot) {
  74                                         return _stopped;
  75                                 }
  76                         }
  77                 }
  78
  79                 public void Start ()
  80                 {
  81                         lock (_syncRoot) {
  82                                 if (!_stopped)
  83                                         return;
  84                                 _stopped = false;
  85                                 tcpListener = new TcpListener (LocalEndPoint);
  86                                 tcpListener.Start ();
  87                                 listenThread = new Thread (new ThreadStart (Listen));
  88                                 listenThread.Start ();
  89                         }
  90                 }
  91
  92                 public void Stop ()
  93                 {
  94                         lock (_syncRoot) {
  95                                 if (_stopped)
  96                                         return;
  97                                 _stopped = true;
  98                                 if (tcpListener != null) {
  99                                         tcpListener.Stop ();
 100                                         tcpListener = null;
 101                                         Thread.Sleep (50);
 102                                 }
 103                         }
 104                 }
 105
 106                 private void Listen ()
 107                 {
 108                         while (!_stopped) {
 109                                 Socket socket = null;
 110                                 try {
 111                                         socket = tcpListener.AcceptSocket ();
 112                                         socket.Send (_requestHandler (socket));
 113                                         try {
 114                                                 socket.Shutdown (SocketShutdown.Receive);
 115                                                 socket.Shutdown (SocketShutdown.Send);
 116                                         } catch {
 117                                         }
 118                                 } catch (SocketException ex) {
 119                                         // ignore interruption of blocking call
 120                                         if (ex.ErrorCode != SOCKET_CLOSED && ex.ErrorCode != SOCKET_INVALID_ARGS)
 121                                                 throw;
 122 #if MOBILE
 123                                 } catch (InvalidOperationException ex) {
 124                                         // This breaks some tests running on Android. The problem is that the stack trace
 125                                         // doesn't point to where the exception is actually thrown from but the entire process
 126                                         // is aborted because of unhandled exception.
 127                                         Console.WriteLine ("SocketResponder.Listen failed:");
 128                                         Console.WriteLine (ex);
 129 #endif
 130                                 } finally {
 131                                         Thread.Sleep (500);
 132                                         if (socket != null)
 133                                                 socket.Close ();
 134                                 }
 135                         }
 136                 }
 137         }
 138 }