mcs/class/System.Runtime.Remoting/MonoHttp/ResponseStream.cs

   1 #define EMBEDDED_IN_1_0
   2
   3 //
   4 // System.Net.ResponseStream
   5 //
   6 // Author:
   7 //      Gonzalo Paniagua Javier (gonzalo@novell.com)
   8 //
   9 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  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 #if EMBEDDED_IN_1_0
  32
  33 using System.IO;
  34 using System.Net.Sockets;
  35 using System.Text;
  36 using System.Runtime.InteropServices;
  37 using System; using System.Net; namespace MonoHttp {
  38         // FIXME: Does this buffer the response until Close?
  39         // What happens when we set content-length to X and write X-1 bytes then close?
  40         // what if we don't set content-length at all?
  41         class ResponseStream : Stream
  42         {
  43                 HttpListenerResponse response;
  44                 bool ignore_errors;
  45                 bool disposed;
  46                 bool trailer_sent;
  47                 Stream stream;
  48
  49                 internal ResponseStream (Stream stream, HttpListenerResponse response, bool ignore_errors)
  50                 {
  51                         this.response = response;
  52                         this.ignore_errors = ignore_errors;
  53                         this.stream = stream;
  54                 }
  55
  56                 public override bool CanRead {
  57                         get { return false; }
  58                 }
  59
  60                 public override bool CanSeek {
  61                         get { return false; }
  62                 }
  63
  64                 public override bool CanWrite {
  65                         get { return true; }
  66                 }
  67
  68                 public override long Length {
  69                         get { throw new NotSupportedException (); }
  70                 }
  71
  72                 public override long Position {
  73                         get { throw new NotSupportedException (); }
  74                         set { throw new NotSupportedException (); }
  75                 }
  76
  77
  78                 public override void Close ()
  79                 {
  80                         if (disposed == false) {
  81                                 disposed = true;
  82                                 if (response.HeadersSent == false)
  83                                         response.SendHeaders (true);
  84
  85                                 if (response.SendChunked && !trailer_sent) {
  86                                         WriteChunkSize (0, true);
  87                                         trailer_sent = true;
  88                                 }
  89                                 response.Close ();
  90                         }
  91                 }
  92
  93                 public override void Flush ()
  94                 {
  95                 }
  96
  97                 static byte [] crlf = new byte [] { 13, 10 };
  98                 void WriteChunkSize (int size, bool final)
  99                 {
 100                         string str = String.Format ("{0:x}\r\n{1}", size, final ? "\r\n" : "");
 101                         byte [] b = Encoding.ASCII.GetBytes (str);
 102                         stream.Write (b, 0, b.Length);
 103                 }
 104
 105                 internal void InternalWrite (byte [] buffer, int offset, int count)
 106                 {
 107                         if (ignore_errors) {
 108                                 try {
 109                                         stream.Write (buffer, offset, count);
 110                                 } catch { }
 111                         } else {
 112                                 stream.Write (buffer, offset, count);
 113                         }
 114                 }
 115
 116                 public override void Write (byte [] buffer, int offset, int count)
 117                 {
 118                         if (disposed)
 119                                 throw new ObjectDisposedException (GetType ().ToString ());
 120
 121                         if (response.HeadersSent == false)
 122                                 response.SendHeaders (false);
 123
 124                         bool chunked = response.SendChunked;
 125                         try {
 126                                 if (chunked)
 127                                         WriteChunkSize (count, false);
 128                         } catch { }
 129                         InternalWrite (buffer, offset, count);
 130                         try {
 131                                 if (chunked)
 132                                         stream.Write (crlf, 0, 2);
 133                         } catch { }
 134                 }
 135
 136                 public override IAsyncResult BeginWrite (byte [] buffer, int offset, int count,
 137                                                         AsyncCallback cback, object state)
 138                 {
 139                         if (disposed)
 140                                 throw new ObjectDisposedException (GetType ().ToString ());
 141
 142                         if (response.HeadersSent == false)
 143                                 response.SendHeaders (false);
 144
 145                         try {
 146                                 if (response.SendChunked)
 147                                         WriteChunkSize (count, false);
 148                         } catch { }
 149                         return stream.BeginWrite (buffer, offset, count, cback, state);
 150                 }
 151
 152                 public override void EndWrite (IAsyncResult ares)
 153                 {
 154                         if (disposed)
 155                                 throw new ObjectDisposedException (GetType ().ToString ());
 156
 157                         if (ignore_errors) {
 158                                 try {
 159                                         stream.EndWrite (ares);
 160                                         if (response.SendChunked)
 161                                                 stream.Write (crlf, 0, 2);
 162                                 } catch { }
 163                         } else {
 164                                 stream.EndWrite (ares);
 165                                 if (response.SendChunked)
 166                                         stream.Write (crlf, 0, 2);
 167                         }
 168                 }
 169
 170                 public override int Read ([In,Out] byte[] buffer, int offset, int count)
 171                 {
 172                         throw new NotSupportedException ();
 173                 }
 174
 175                 public override IAsyncResult BeginRead (byte [] buffer, int offset, int count,
 176                                                         AsyncCallback cback, object state)
 177                 {
 178                         throw new NotSupportedException ();
 179                 }
 180
 181                 public override int EndRead (IAsyncResult ares)
 182                 {
 183                         throw new NotSupportedException ();
 184                 }
 185
 186                 public override long Seek (long offset, SeekOrigin origin)
 187                 {
 188                         throw new NotSupportedException ();
 189                 }
 190
 191                 public override void SetLength (long value)
 192                 {
 193                         throw new NotSupportedException ();
 194                 }
 195         }
 196 }
 197 #endif
 198